Mix Sustentável Journal Quarterly publication, with at least one special edition, for the dissemination of the interdisciplinary scientific/technological knowledge of the project focused on sustainability. Submission in continuous flow. Language= Portuguese, English or Spanish. Federal University of Santa Catarina - UFSC VirtuHab Research Group ESSN - 2447-3073 ISSN - 2447-0899 Created in 06/2015. QUALIS CAPES New Evaluation Cycle 2017-2020 - QUALIS A3, considering 19 areas of knowledge, Impact factor - 0.76 (2020, 2021) H index Google Scholar - 11 (2023) Access the profile of Revista Mix Sustentável on Google Scholar QUALIS CAPES Evaluation Cycle 2013-2016 in 7 areas of knowledge B5 in the areas: Architecture, Urbanism and Design; Communication and Information; Engineering I, Engineering III, Interdisciplinary; Environmental Sciences and Communication and Information. B4 in the area: Public and Business Administration, Accounting Sciences and Tourism.
UFSC - Federal University of Santa Catarina
Creative Commons Copyright Notice Attribution 4.0 International
SIMULATION OF STRUCTURAL COMPENSATORY TECHNIQUES TO MITIGATE SURFACE RUNOFF IN A BRAZILIAN MUNICIPALITY SUBJECT TO FLOODING
Hydrological disasters have become increasingly common in recent years, primarily owing to the lack of urban planning for stormwater drainage. A broad consensus in the literature is that traditional drainage approaches are obsolete, unsustainable, and increasingly costly over time. This highlights the need for a new approach to urban drainage. Structural compensatory techniques (SCTs), combined with mathematical modeling, have become essential tools for achieving sustainable urban development. Accordingly, this study evaluated the performances of two SCTs—cisterns and permeable pavements—in reducing flood peaks in flood-prone basins. The storm water management model (SWMM) software was used for the analysis, with cisterns demonstrating superior performance. The curve number–soil conservation service (CN-SCS) method was used for modeling to assess the impact of urban areas on hydrograph values. The results suggest that the SCS method should be used with caution when applied to large basins because it exaggerates real runoff volume values.
Copyright (c) 2026 João Paulo Ottonelli, Aleska Kaufmann Almeida, Leidiane da Silva Marques, Isabel Kaufmann de Almeida https://creativecommons.org/licenses/by/4.0
MODULAR SMARTPHONES AS A SUSTAINABLE ALTERNATIVE: THE ROLE OF PRODUCT DESIGN IN THE FACE OF OBSOLESCENCE
The rapid advancement of technology and current consumption patterns have intensified the environmental impacts associated with the obsolescence of electronic devices. In this context, sustainable product design emerges as a strategic tool to extend the lifespan of consumer goods and encourage repairability and reuse practices. This study discusses the role of the designer in the face of these challenges, analyzing the possibilities offered by modular smartphones, inspired by the Phonebloks concept. The research highlights how modularity can favor personalization and reduce the volume of electronic waste, but also points to the economic and cultural barriers that hinder its widespread adoption. The results emphasize the need for greater integration between technological innovation, design responsibility, and consumer engagement, in order to consolidate viable alternatives for sustainable design.
Copyright (c) 2026 José Lucas Pereira Mendes, Bárbara Tatiele Santos, Jocelise Jacques de Jacques, Léia Miotto Bruscatto https://creativecommons.org/licenses/by/4.0
APPLICATION OF THE USAT TOOL FOR SUSTAINABILITY ANALYSIS:THE CASE OF LAGOA DA CONCEIÇÃO, FLORIANÓPOLIS of Lagoa da Conceição, Florianópolis
This article presents the results of the application of the USAT (Urban Sustainability Assessment Tool), created for managing sustainability at the urban and building scale. The case study site is Lagoa da Conceição, in Florianópolis. These indicators were organized into categories to assess the urban structure and buildings according to the ESA-B Model. In all, the system has 4 panels: Shocks, Urban Structure, Conduct and Performance. In this article, data from the Urban Structure Panel will be presented, based on an analysis of the Lagoa da Conceição district; and the Conduct Panel, with an analysis of a commercial building located in the neighborhood. The research contributes to urban sustainability by offering a governance structure for the study area, with the potential to be replicated in other regions with similar challenges.
Copyright (c) 2026 Lisiane Ilha LIbrelotto, Paulo Cesar Machado Ferroli, Ernestina Rita Meira Engel, Mel Ramos da Rosa, Eduardo Palazine https://creativecommons.org/licenses/by/4.0
PROPOSAL FOR WEIGHTING INDEX FOR ACOUSTIC COMFORT IN BRAZIL
The relationship between comfort and acoustic performance is a critical issue for advancing research in building design. This study proposes weighting indexes for acoustic comfort in Brazil. The methodology comprised five stages: test–retest for reliability, nationwide questionnaires, statistical analyses, in-situ validation, and development of weighting factors. The survey used a mixed-method approach with 95% confidence and a 3% margin of error. Based on IBGE data for 215 million inhabitants, a minimum sample of 1068 respondents was required; 1417 Brazilians from all states participated. To validate results, the questionnaire was also applied in a multi-family residential building. Weightings were established for impact noise, airborne noise, building equipment, indoor and outdoor noise, noise from common areas, commercial activities, and noise sensitivity. Airborne (19.92%) and impact noise (19.86%) were identified as most disturbing, followed by outdoor noise. These findings provide preliminary indices to quantify acoustic discomfort in everyday environments.
Copyright (c) 2026 Willian Magalhães de Lourenço, Gabriela Meller, Viviane Suzey Gomes de Melo, Gihad Mohamad https://creativecommons.org/licenses/by/4.0
MODELING AND CHARACTERIZATION OF MODULAR PANELS PRODUCED WITH RESIDUES FROM BUTIÁ FRUITS
Butiá trees (Butia (Becc.) Becc. (Arecaceae) are native to South America and are recognized for their biodiversity, historical-cultural relevance and landscape importance. The residues of butiá fruits are used handcrafted to decorate recipient and produce decorative objects. The production and characterization of modular panels can be an alternative for new applications of the material. The modeling of the panels was carried out using only fruit waste and water, and the molds were produced in acrylic, using the laser cutting technique. The characterization of the panels was carried out using scanning electron microscopy (SEM) and tests of apparent density, water absorption and swelling in thickness. It was found that the material is easy to model and stands out for not requiring binders, just water. With the help of electron microscopy it was possible to visualize the intertwined fibers, surrounded by the remains of dry pulp, which justifies the adhesion of the panels. The panels have low density (0.173g/cm³) and high water absorption rates, characterizing themselves as hydrophilic. The thickness swelling results were 12.41% after two hours, with little variation occurring after 22 hours immersed in water.
Copyright (c) 2026 Silvie Janis Mossate Jobim, Danieli Maehler Nejeliski, Lauren da Cunha Duarte https://creativecommons.org/licenses/by/4.0
WATTLE-AND-DAUB: HISTORICAL-CULTURAL RECONSTRUCTION OF AFRO-DESCENDANT BUILDING TRADITION IN SALINAS, IMBABURA
This article presents the preliminary findings of an investigation into the vernacular bahareque (wattle and daub) architecture in Salinas, Imbabura – Ecuador, a parish with a majority afro-descendant population where the ancestral building tradition faces accelerated decline. The study aims to identify the sustainability values of these buildings through their construction characterization and the recording of oral memory. Using exploratory methodology with a qualitative approach, the research combined bibliographic review, field data collection through direct observation and interviews, and content analysis to reconstruct the constructive process and identify the materials and typologies traditionally used in bahareque buildings in the locality. The results reveal the almost total loss of the original constructions, with their vestiges preserved solely in oral discourse. Sustainability values related to the environmental and social spheres were identified. It is concluded that the vernacular bahareque buildings were adapted to the environment, and moreover, their constructive process was a core element of social cohesion. The possibility of revitalizing this constructive system is proposed, adapting it to the current context and integrating social dynamics as a strategy to enhance local development and the conservation of cultural heritage.
Copyright (c) 2026 Andrea Salomé Jaramillo Benavides, Esperanza Muñoz Espinoza, José Carranco Muñoz https://creativecommons.org/licenses/by/4.0
SUSTAINABLE BIOPOLYMER TREATMENTS IN CEMENTITIOUS
Motivated by sustainability, this study is part of Oliveira's doctoral thesis (2025), which developed a biotreatment for cementitious composites reinforced with Amazonian mallow fiber. Therefore, the present study aimed at combining exploratory and systematic review methods to justify the knowledge gap and emerging themes concerning biopolymeric treatments in cementitious biocomposites. The results show that treated mallow fibers improve the mechanical properties and durability of cementitious biocomposites. However, the degradation of fibers in the matrix and the environmental impacts of the treatments used are not sustainable, with few studies on surface treatments using biopolymers. The study concludes that the integration of exploratory and systematic reviews provided a hybrid approach, essential for defining the research. The results indicate that biopolymers, such as natural rubber latex and bacterial nanocellulose, represent eco-efficient opportunities for surface treatments with potential application on the surface of natural fibers used as reinforcement in cementitious matrices.
Alternative materials and technological innovations
Copyright (c) 2026 Igor Roberto Cabral Oliveira, Luana Toralles Carbonari, Berenice Martins Toralles https://creativecommons.org/licenses/by/4.0
SUSTAINABLE ALLOYS IN CONTEMPORARY JEWELRY - A STUDY ON COPPER-SILVER COMPOSITIONS
The integration of recycled metals into jewelry production presents both technical and environmental challenges. So on, sustainability in contemporary jewelry requires new approaches to material selection and processing. This study examines silver-copper alloys formulated with copper recovered from discarded electronics. The aim was to assess whether adjustments in copper content could provide technically consistent and aesthetically acceptable results while reducing dependence on newly mined silver. The investigation followed two complementary stages: literature research to consolidate theoretical foundations and laboratory experimentation to test six different alloys. Samples were analyzed during casting and rolling, and their aesthetic qualities were assessed through sanding and polishing. Mechanical behavior was further evaluated using Vickers hardness tests. The analysis revealed that alloys with 85% silver (Ag850) containing 15% recycled copper maintain satisfactory levels of strength, malleability, and visual quality. It has minimal differences compared to conventional alloys, preserving essential characteristics for jewelry use. These results suggest that resource-efficient strategies can expand sustainable practices in the jewelry sector, lowering environmental costs linked to mineral extraction.
Copyright (c) 2026 Janaíne Taiane Perini, Felipe Luis Palombini, Mariana Kuhl Cidade https://creativecommons.org/licenses/by/4.0
CHARACTERIZATION OF RICE HUSK ASH AS A FILLER IN CERAMICS THROUGH CONTACT ANGLE AND FLEXURAL STRENGTH EXPERIMENTS
Brazil generates a significant amount of rice husk waste, considered to have little to no economic value, which can result in negative environmental impacts. This study presents an experiment involving the mixing of rice husk ash with commercial clay, aiming to leverage the properties found in the ash to enhance the material quality. For this purpose, rice husk ash was mixed with clay in predefined quantities to create test samples. These samples were subjected to contact angle and flexural strength tests to preliminarily characterize the effect of the ash on the clay at different concentrations. The collected data demonstrated that this composite material has commercial potential with up to 10% ash content, as the results were relevant and will serve as the foundation for further research and potential development of ceramic products requiring the characteristics identified in this study.
Copyright (c) 2025 Cezar Oliveira de Almeida, Mariana Kuhl Cidade, Marcos Antonio Villetti, Ronaldo Martins Glufke, Felipe Luis Palombini https://creativecommons.org/licenses/by/4.0
TECHNOLOGICAL ALTERNATIVE FOR USING ASH FROM COAL COMBUSTION IN PECÉM/CEARÁ/BRAZIL THERMOELECTRIC PLANTS: EVALUATION OF PASTES FOR CEMENTING OIL WELLS
In Brazil, cements such as CPP Class G and CPP Class Especial are widely used in the cementing of oil wells due to greater quality control and lower logistics costs compared to common cements. However, cement pastes intended for civil construction do not meet the requirements of NBR 9831/2020, especially regarding compressive strength. To improve this characteristic, the microstructure of the pastes can be modified with mineral additions, such as ash from the combustion of coal, an industrial waste abundant in Ceará. This study evaluates the feasibility of using Portland CPV cement pastes with partial replacement of fly ash and bottom ash for the cementing of oil wells. Replacements of 5% and 10% of ash were tested, varying the water/binder ratio between 0.597 and 0.634. The materials were analyzed for chemical composition, grain shape, granulometry, and the ash for pozzolanic activity. The formulated pastes were evaluated according to ABNT NBR 9831/2020, API SPEC 10/2009 and API RP 10B/2003 standards. The results indicate that these pastes are viable for well cementing, with emphasis on the formulations with 10% ash replacement.
Cementing of oil wells; coal ash; Portland cement pastes.
Copyright (c) 2025 Miguel Adriano Gonçalves Cirino, Ana Verônica Gonçalves Borges, Antônio Eduardo Bezerra Cabral, Julio Cezar de Oliveira Freitas, Bruno Luis Daminelli https://creativecommons.org/licenses/by/4.0
POROUS CERAMICS AS A SUSTAINABLE SOLUTION FOR ESTUARINE DREDGED MUD
Environmental challenges and the growing demand for sustainable solutions have driven research into the beneficial use of dredged material in the ceramic industry. However, most studies focus on incorporating small proportions of sediment into conventional formulations, limiting the potential for reducing mining activities or ocean disposal. Despite the complexities of estuarine environments — characterized by high organic matter content — few studies have investigated the use of dredge mud as the predominant raw material in ceramic production. To bridge this gap, this experimental study explores the development and performance of porous ceramics produced primarily from estuarine dredged mud. The methodology involved sampling sediment during the dredging process at the Rio Grande port complex in southern Brazil, followed by comprehensive mineralogical, chemical, and physical characterization. This was succeeded by the molding of green bodies and sintering at 900°C, along with analyses of the ceramics’ physical, mechanical, and thermal properties. The findings indicate that the final product is viable as a thermal insulator, meeting quality standards established by technical norms and existing literature, thus positioning the obtained porous ceramic as a sustainable alternative for managing sludge residues from dredging operations.
Copyright (c) 2026 Cristina Lemos Goularte, Rita de Cássia Gnutzmann Veiga, Margarete Regina Freitas Gonçalves https://creativecommons.org/licenses/by/4.0
ALKALI-ACTIVATED PASTE BASED ON BIOMASS ASH
The increasing demand for sustainable alternatives in civil construction has spurred the development of cementitious materials with reduced environmental impact. In this context, alkali-activated materials have emerged as a promising solution, enabling the partial replacement of Portland cement with industrial by-products, such as biomass ash and fly ash. This paper investigates the use of biomass ash from the ceramic industry (CBA) and the cellulose industry (PBA), in binary mixtures with fly ash (FA), in the production of alkaline-activated cementitious pastes. Mini-slump, setting time, compressive strength, water absorption and scanning electron microscopy (SEM) tests were performed. CBA with a high calcium content (86.23%), showed greater reactivity and better mechanical performance in the pastes. In contrast, PBA, characterized by a high silica content (65.9%) and a low calcium content (6.54%), exhibiting higher compressive strength (30,66 MPa), but lower workability indices. The results demonstrate that these ashes are viable alternatives to Portland cement, contributing to sustainability and the circular economy by reusing industrial waste. However, the variability in ash properties requires strict control to ensure consistency and optimization of composites.
Copyright (c) 2025 Iuri Veríssimo Mendonça, Mateus Ferreira da Silva, Marco Antônio Barbosa de Oliveira, Antônio Eduardo Cabral Bezerra, Heloína Nogueira da Costa https://creativecommons.org/licenses/by/4.0
TRENDS, RESULTS AND CHALLENGES - STUDY OF
This study analyzed the trends, challenges, and outcomes related to sustainable practices in the Brazilian footwear industry during the post-pandemic period (2022–2023). The objective was to identify initiatives and advancements that integrate sustainability into the sector's production processes. The research employed thematic-categorical content analysis based on 21 reports from Abicalçados, organizing information into three main axes: trends, results, and challenges. The findings revealed an increased use of eco-efficient materials, greater achievement of certifications, such as the Sustainable Origin seal, and recognition in national and international events. Social responsibility initiatives, including donations and collaborative campaigns, were also highlighted. However, significant barriers were identified, such as high implementation costs, a lack of skilled labor, and legislative complexity. The study concludes that sustainability has become an essential strategy for the sector's competitiveness, although challenges persist. Practical implications include the need for enhanced training and encouragement of partnerships.
Copyright (c) 2025 Ítalo José de Medeiros Dantas, Marcelo Curth, Débora Pires Teixeira, Glauber Soares Júnior, Fabiano Eloy Atílio Batista https://creativecommons.org/licenses/by/4.0
THERMAL PERFORMANCE OF GREEN ROOFS: COMPARATIVE EVALUATION OF CONSTRUCTION SYSTEMS
This study assessed the thermal performance of different Green Roof (GR) models compared to a conventional ceramic roof (CCR) in urban settings. Four roof prototypes were tested: Conventional Ceramic Roof (TV), Conventional Green Roof (TVC), Tray Green Roof (TVB), and Alveolar Green Roof (TVA). Thermal measurements were taken under varying climate conditions to analyze internal and external temperatures. Results showed that Green Roofs, especially the AGR model, performed better thermally than CCR. They maintained lower temperatures on hot days and more stable indoor conditions on cold days, enhancing thermal comfort. Vegetation such as Emerald Grass played a key role in cooling and reducing the urban heat island effect. The TGR and AGR systems also included drainage layers and water reservoirs, which improved thermal efficiency, reduced irrigation needs, and contributed to stormwater management. These features support both environmental sustainability and building resilience. Overall, Green Roofs proved to be a viable and effective solution for improving urban thermal comfort and reducing environmental impact. Future research should explore their performance in different climates and cities, as well as their long-term economic and social benefits.
Copyright (c) 2026 Sofia Negri Braz, Bruno Luis Damineli https://creativecommons.org/licenses/by/4.0
ENHANCING THERMAL EFFICIENCY AND COMFORT WITH GREEN FAÇADES IN AFFORDABLE HOUSINGS IN SUBTROPICAL CLIMATE
The study investigates the thermal efficiency and indoor comfort of green façades in affordable housing units located in Santa Maria, southern Brazil. Over the course of one year, six housing units were monitored to evaluate summer performance, with five units incorporating green façades and one serving as a control unit without vegetation. Data collection focused on climate parameters, such as air temperature and relative humidity, recorded every 15 minutes using thermal sensors and thermographic imaging. The results reveal that the green façades significantly enhanced thermal performance by reducing surface temperatures and improving indoor thermal comfort. The maximum observed temperature difference between units with green façades and the control unit reached 12.6 C. The thermographic images visually validated these findings, visually confirming the cooling effect. Physiologically Equivalent Temperature (PET) analyses further demonstrated increased thermal comfort in green façade units, with the highest PET difference of 6.5 ºC recorded on February 24. The findings advocate for broader adoption of green façades in social housing in any geographic location, emphasizing their role in addressing environmental challenges, improving energy efficiency, and promoting occupant well-being in urban settings.
Copyright (c) 2025 Renata Serafin Albernard, Elaise Gabriel, Minéia Johann Scherer https://creativecommons.org/licenses/by/4.0
THERMAL COMFORT AND INFRARED THERMOGRAPHY: ANALYSIS OF THE CENTRO MARIÓPOLIS SANTA MARIA CHURCH IN IGARASSU/PE
In this study, the construction strategies to promote thermal comfort of the Centro Mariópolis Santa Maria Church, located in Igarassu, PE, in a tropical humid climate region, were analyzed. When not properly addressed, construction strategies and the use of inadequate materials can compromise the energy efficiency of the building, making the use of air conditioning systems essential to ensure the thermal comfort of users, who may experience discomfort symptoms such as lack of attention, drowsiness, and stress in very hot environments. The objective of this article is to evaluate the thermal comfort promoted by the construction strategies and materials employed in the church. To achieve this, the possible strategies used in the design were analyzed according to their bioclimatic zone, a characterization of the materials used in the facades was conducted, a solar chart and wind rose were analyzed, and measurements were taken with a thermal camera on the facades. The results obtained indicate that the strategies employed in the design and construction of the church, as well as the materials used in the facades—except for the yellow paint—were favorable for the thermal comfort of the building.
Maria Eugênia Silva Gonçalves Vasconcelos
Copyright (c) 2025 Stephany Rayane Silva Rodrigues, Maria Eugênia Silva Gonçalves Vasconcelos, Willames de Albuquerque Soares, Eudes de Arimatéa Rocha, Victor Marcelo Estolano de Lima https://creativecommons.org/licenses/by/4.0
CHARACTERIZATION OF A BINARY ALKALI-ACTIVATED SYSTEM BASED ON CERAMIC WASTE AND METAKAOLIN
The red ceramics industry is a significant generator of solid waste, which can be reused in construction to reduce the consumption of natural resources and lower CO₂ emissions associated with Portland cement production. However, red ceramic waste (RCW) as a precursor in alkali-activated materials remains underexplored. This study aimed to evaluate a binary mixture of RCW and metakaolin (MK) for producing alkali-activated cements. Four pastes were prepared with varying proportions of RCW and MK. In the fresh state, mini-slump tests, setting time measurements, and fresh density determinations were performed. In the hardened state, compressive strength was evaluated at 7, 28, and 91 days, along with water absorption. Additionally, Scanning Electron Microscopy (SEM) analysis was conducted. The paste composed of 100% RCW exhibited the greatest spread (94.5 mm), whereas the mixture with 75% MK and 25% RCW achieved the highest compressive strength of 42.79 MPa at 7 days. SEM analysis revealed the formation of binder gels, confirming the viability of using RCW and MK in alkali-activated cement pastes.
Construction; waste; paste; alkali-activated binder.
Copyright (c) 2025 João Victor Teles Tavares, Nayra Rocha de Sousa, Antonio Lucas Braga Moreira, Antonio Eduardo Bezerra Cabral, Heloina Nogueira da Costa https://creativecommons.org/licenses/by/4.0
PIASSAVA AS A PRODUCT WITH GREATER ADDED VALEU: PERSPECTIVES FOR DESIGN
The purpose of this article is to expose the context and relevance of piassava as a product with greater added value (PMVA) and its connection with design. The economic and sustainable potential of piassava will be discussed, along with its challenges and opportunities. The importance of design, materials and sustainability to value piassava, highlighting the relevance of this study for the understanding and progress of the subject. The scientific procedure used involved the review of academic literature and research websites from public companies. The results obtained were updated data on the piassava chain in Bahia, its uses and perspectives for design, as well as experimentation in the manufacture of the piassava and castor resin ecocomposite in two different proportions
Copyright (c) 2025 Igor César Rosa Silva https://creativecommons.org/licenses/by/4.0
PROJECTION OF FUTURE CLIMATE SCENARIOS FOR THE METROPOLITAN REGION OF THE CUIABÁ RIVER VALLEY - AN ANALYSIS OF THE URBANIZATION PROCESS
This study analyzes the impacts of climate change in the Metropolitan Region of the Cuiabá River Valley (RMVRC), projecting the behavior of future maximum temperatures in the face of advancing urbanization. With a population of over one million people and a semi-humid tropical climate, the region faces a worrying scenario, where projections indicate a significant increase in temperature, which could reach up to 10 °C by the end of the century. The research uses data from the CNRM-ESM2-1 climate model, coupled with the SSP370 scenario obtained by the WorldClim platform, analyzing the evolution of maximum temperatures in the periods 2021-2040, 2041-2060, 2061-2080, 2081-2100. The results indicate that the urbanized areas of Baixada Cuiabana, are likely to experience more intense warming, with average annual maximum temperatures reaching up to 38 °C by 2100. Furthermore, the analysis of the percentage increase in relation to historical climate data shows that the months of climate transition may become even drier and hotter, intensifying the region's vulnerability. This scenario reinforces the importance of public policies for urban planning and adaptive solutions and mitigation strategies, aiming to reduce the impacts of climate change, protect the environment and guarantee the population's quality of life
Copyright (c) 2025 Natallia Sanches e Souza, Fábio Friol Guedes de Paiva, Diana Carolina Jesus de Paula https://creativecommons.org/licenses/by/4.0
NATURE-BASED SOLUTIONS FOR CLIMATE CHANGE MITIGATION AND ADAPTATION
As the impacts of climate change become more evident and devastating, the search for effective approaches to address these challenges is crucial. This article discusses the importance of Nature-Based Solutions (NbS) in the adaptation to and mitigation of climate change. NbS offer a promising approach, utilizing natural ecosystems and biological processes to address climate problems. This study reviews the current scientific literature and finds the significant role of NbS in reducing greenhouse gas emissions, protecting against extreme weather events, and promoting the resilience of vulnerable communities and biodiversity. Some of the reviewed studies have assessed that NbS could provide approximately 30% of the global climate mitigation required by 2030/2050 to achieve the Paris Agreement target of a 1.5/2°C temperature increase; reduce the intensity of climate and meteorological hazards by 26%; and that the evidence for NbS in adaptation is largely related to reducing exposure to the immediate impacts of climate change.
Copyright (c) 2025 Paula de Araújo Souza, Victor Hugo Souza de Abreu https://creativecommons.org/licenses/by/4.0
SYSTEMATIC REVIEW : WOOD-PLASTIC COMPOSITES AS SUSTAINABLE SOLUTIONS FOR COMPOSITE STRUCTURES
This paper reviews recent advances in wood-plastic composites (WPC) research to explore their potential in composite structures. Utilizing the Systematic Search Flow methodology, the composition, production strategies, and physical-mechanical performance of WPC were analyzed. The extrusion process, whether isolated or combined with other methods, stands out for thermoplastic-based WPC, allowing continuous production and high processing rates. Polypropylene is commonly used as a matrix, combined with residual fibrous fillers that enhance stiffness and strength but also increase water absorption. The use of compatibilizing agents can mitigate this absorption and improve mechanical performance. The manual hand layup method is prevalent for thermoset composites, offering longer handling times and resulting in dimensional stability and thermal resistance; however, it heavily relies on the operator's skill, limiting process consistency. The versatility of WPC positions them as a promising solution for construction, addressing plastic waste pollution and deforestation. Nonetheless, further research is needed to enhance durability and performance while exploring new materials and techniques. This study comprehensively covers these aspects, employing graphical tools to illustrate the complexities involved and providing in-depth analyses of how these factors influence the physical-mechanical behavior of WPC.
Copyright (c) 2025 Anderson Ravik Santos https://creativecommons.org/licenses/by/4.0
DESIGN FOR CIRCULAR ECONOMY: DESK ORGANIZER WITH RECYCLED POLYMER
The issue of sustainability is increasingly present in discussions about production and consumption. In this context, polymeric materials raise serious concerns, being considered one of the most harmful to the environment due to their slow degradation. However, as a highly versatile and relatively inexpensive material, polymers make up a large part of everyday objects. Due to the concern generated by the often incorrect disposal of their waste, efforts are being made to find ways to change this. One viable approach to mitigating environmental challenges is the adoption of the circular economy, which aims to reintegrate materials into the production cycle. Design, in this context, plays a key role by designing products in such a way as to minimize their disposal as much as possible. This paper presents the development of a line of desk organizers made from recycled polymer. The post-consumer material was crushed and pressed into sheets and used to create the products. Therefore, mechanical recycling was presented as a possible resource for recovering polymers and using them as raw materials for the production of new artifacts in the context of the circular economy.
Copyright (c) 2025 Tayná Steiger Mai https://creativecommons.org/licenses/by/4.0
SUSTAINABLE HOUSING RESETTLEMENT MODEL IN SOUTHERN BRAZIL: ECONOMIC AND ENVIRONMENTAL ASSESSMENT
Social inequality often forces vulnerable populations to occupy high-risk areas, compromising their well-being and degrading the environment. This study proposed a sustainable housing model for the residents of the Passo Fundo community in Lages, Santa Catarina, who currently occupy a flood-prone area irregularly. The proposed model is based on a modular house equipped with rainwater harvesting systems, photovoltaic panels, and solar collectors. Economic feasibility was analyzed, and the model was environmentally compared to conventional housing options. The results demonstrated that implementing one or more green technologies aligns with the housing financing criteria, making it accessible to the target population. The environmental impact analysis highlighted the severe negative impacts associated with the residents’ current conditions, but showed a substantial reduction in these impacts with the adoption of the proposed model. Ultimately, the study successfully presented a social housing model that balances environmental and economic aspects, offering a practical solution for improving living conditions in vulnerable communities.
Copyright (c) 2025 Rafael Bonella Zuglianello, Carlos Tasior Leão, Juliana Ferreira Soares, Flávio José Simioni, Jeane de Almeida do Rosário https://creativecommons.org/licenses/by/4.0
SUSTAINABILITY IN THE URBAN MOBILITY PLAN OF SÃO JOSÉ DOS CAMPOS: STRATEGIES FOR MICROMOBILITY AND PUBLIC TRANSPORTATION
In 2003, Brazil's National Urban Mobility Policy adopted the principles of sustainable urban Mobility at which the Urban Mobility Master Plan (PlanMob) is an instrument for implementing this at municipal level. In this context, this article analyses whether the Urban Mobility Plan for São José dos Campos incorporates the principles of sustainability, based on guidelines aimed at prioritizing active modes of transport and public transport. The methodology, which is exploratory and descriptive, is comprised of 23 themes that interfere with the municipal urban mobility policy and the implementation of actions aimed at sustainable development. The results show that the municipality has incorporated the principles of sustainability through programs such as “Vou de Bike”, the expansion of the cycling network and the Green Line project, which reinforce the city's commitment to more sustainable mobility. These actions contribute to environmental sustainability by promoting more efficient and low impact commuting alternatives, as well as allowing São José dos Campos to consolidate itself as a model of innovation and efficiency, which was recognized in 2022, when the city was awarded the title of smart city.
Copyright (c) 2025 Andressa Aparecida Fonseca Farias, Renata Cardoso Magagnin; Luis Carlos Binotto Leal https://creativecommons.org/licenses/by/4.0
USE OF ELECTRIC ARC FURNACE STEELMAKING SLAG IN ACCELERATED CARBONATION
The valorization of industrial waste in the steel industry is of great interest within the circular economy model and in the development of strategies for carbon sequestration. Currently, due to sustainable policies, the number of industrial process plants in steel factories is increasing, where the steel production system using basic oxygen furnaces (BOF) is being replaced by electric arc furnaces (EAF). Compared to BOF, the EAF has the advantage of using a renewable energy source and recycling scrap for steel production, thus resulting in lower emissions of polluting gases. The EAF process generates byproducts, such as slag, with a chemical composition different from the residues of the BOF process, which limits its use in conventional applications in civil construction, such as infrastructure works or as an additive to cement. The accelerated carbonation process allows reactions between CO₂ and oxides present in EAF steel slag to occur in a shorter time within the reactor, with a significant increase in compressive strength and chemical stability of the samples when compared to the carbonation of the material under atmospheric conditions.
Accelerated carbonation; Electric arc furnace steel slag; Carbon sequestration
Copyright (c) 2025 Heliton Weide, André Lübeck, Alexandre Silva de Vargas, Almir Barros Da Silva Santos Neto, Daniel Assumpcao Bertuol https://creativecommons.org/licenses/by/4.0
PROPOSITION AND DISCUSSION ON LOW-CARBON BUILDING TECHNOLOGY - LCBT
Society faces a unique challenge: reducing CO2 emissions associated with its productive activities. This goal is particularly relevant to the construction sector, which accounts for 37% of global greenhouse gas emissions. However, the initiatives undertaken in this sector have not yielded satisfactory results. This article proposes and discusses principles that contribute to the formulation and development of low-impact building technologies. The hypothesis posits that organizing architectural production significantly contributes to its unsustainability, with this organization being a central aspect of technology. As a methodological approach, the study employed logical argumentation supported by a literature review on technology, sustainability, and low-carbon practices. The research outcome involves identifying and characterizing seven principles: permanent building, non-alienated labor, man-nature integration, less energy, self-determination, productive rationality, and popular empowerment. These principles define Low-Carbon Building Technology and suggest a framework for reorganizing production processes to make them less carbon-intensive.
Copyright (c) 2025 Senhora, Senhora https://creativecommons.org/licenses/by/4.0
GREEN CREATIVE DESIGN FOSTERING A SUSTAINABLE MENTAL MODEL
Green creativity has emerged as a vital field in sustainability research, emphasizing the integration of creative processes with environmental responsibility. Literature on green creativity highlights its role in generating eco-innovations and fostering awareness of sustainable practices through design. Engagement in sustainability initiatives often depends on such creativity-driven approaches, which encourage individuals to view sustainability as part of their core values and social identity. This study explores how a creative framework based on green creativity and design techniques can effectively promote sustainable engagement. The method involved adapting a Creative Framework for the “Cidades pelo Clima” project (CpC), to engage participants in sustainable issues. It helped establish shared values and collective goals, empowering participants to actively contribute to environmental solutions. Results demonstrate that green creativity not only enhances team cohesion and motivation but also embeds sustainability into participants' mental models, fostering long-term commitment to eco-conscious behaviors. The research contributes to the field of sustainable design by showcasing how creativity can serve as a catalyst for promoting long-term engagement and fostering sustainable mental models
Copyright (c) 2025 daniela estaregue, Cristiano Alves, Paulo Manuel Cadete Ferrão https://creativecommons.org/licenses/by/4.0
ANALYSIS OF THE APPLICATION OF LIMESTONE WASTE IN AGGLOMERATED SYSTEMS BASED ON A SYSTEMATIC LITERATURE REVIEW
Limestone is a sedimentary rock composed mainly of calcite and aragonite, both composed of CaCO3, and may contain magnesium (dolomite). Its mining causes environmental problems due to the inadequate disposal of the waste generated. This study aims to identify the applicability of limestone waste from rocks in agglomerated systems and to evaluate the techniques used to analyze these wastes and their products. The limestone waste used is generally calcitic and comes from quarries that extract carbonate rocks. Chemical and/or mineralogical analysis of waste does not present an indispensable preliminary analysis, and there is no predominance of a complete characterization of the particle size, shape and texture. Furthermore, most studies do not describe the state of the waste at the collection site and do not address the method of preparing the waste for use. Limestone waste is generally applied in the form of a filler, partially replacing fine aggregate or cement in mortars. The studies analyzed showed that its use in mortar production is viable and beneficial and can maximize new research on the use of waste, as well as help reduce the extraction of non-renewable natural resources.
Copyright (c) 2025 Ana Verônica Gonçalves Borges, Miguel Adriano Gonçalves Cirino, Bruno Luis Damineli, Antônio Eduardo Bezerra Cabral https://creativecommons.org/licenses/by/4.0
STRATEGIC DECISIONS: A SUPPORT MODEL FOR PRIORITIZING PROJECTS IN THE BRAZILIAN TRANSPORT INFRASTRUCTURE
Efficient transportation infrastructure is vital for the economy and society, but it requires significant resources and often has negative impacts. Integrating sustainability into decision-making for such projects is gaining momentum, yet they often suffer from cost overruns and delays despite extensive research. This study proposes an innovative action model to prioritize projects within Brazil's complex transportation infrastructure, considering financial viability, socioeconomic impact, and environmental sustainability. The model aims to optimize resources and promote equitable development. Its development involved defining objectives, reviewing literature, involving stakeholders, setting criteria, developing, validating, piloting, and documenting results. It covers aspects like prioritization, resource allocation, challenge mitigation, alignment with national goals, stakeholder involvement, and adaptability. Critical points such as economic impacts, risk assessment, environmental and social sustainability, technological innovation, resilience to extreme events, and transparency are also addressed. Overall, the study offers a holistic approach to prioritize projects and promote sustainable development in Brazil's transportation sector.
Copyright (c) 2025 Victor Hugo Souza de Abreu, Sandra Oda, Thais Guedes Maximo https://creativecommons.org/licenses/by/4.0
SOUNDSCAPE AND NOISE MAP OF A HOSPITAL AREA IN A SMALL CITY
his article investigates noise pollution in hospital areas, focusing on the Hospital de Caridade e Beneficência (HCB) in Cachoeira do Sul, Rio Grande do Sul. Through field measurements and simulations using the iNoise software, sound pressure levels around the hospital and the local population's perception of noise impact were analyzed. The results indicate that noise levels exceed the limits established by NBR 10.151, with values reaching up to 61.7 dB, while the allowed limit for residential and hospital areas is 50 dB. The main noise-generating factors are vehicular traffic and machinery. Despite the high noise levels, respondents’ perceptions revealed an adaptation to the noise, with many considering the environment calm. It is concluded that, even in smaller cities, noise pollution affects sensitive areas such as hospitals, making it necessary to implement acoustic mitigation measures to ensure user comfort.
Copyright (c) 2025 Willian Magalhães de Lourenço, Bianca da Cunha Garcez, Ana Lívia Farias Dib, Gabriela Meller, Minéia Johann Scherer https://creativecommons.org/licenses/by/4.0