Journal of Sustainable Construction Materials and Technologies最新文献

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Green building future: algal application technology 绿色建筑的未来：藻类应用技术

Journal of Sustainable Construction Materials and Technologies Pub Date : 2024-04-19 DOI: 10.47481/jscmt.1348260

A. Çelekli, İrem Yeşildağ, Ö. Zariç

{"title":"Green building future: algal application technology","authors":"A. Çelekli, İrem Yeşildağ, Ö. Zariç","doi":"10.47481/jscmt.1348260","DOIUrl":"https://doi.org/10.47481/jscmt.1348260","url":null,"abstract":"In the context of rising global energy demands driven by population growth and urbanization, the construction industry significantly contributes to greenhouse gas emissions during the construction phase and subsequent energy consumption. Fossil fuel dependency for heating and energy needs exacerbates climate change, necessitating urgent solutions. Algal technology emerges as a promising strategy for green building practices, addressing energy efficiency and emissions reduction. Algae's unique ability to absorb carbon dioxide (CO2) through photosynthesis is harnessed by deploying photobioreactors on building exteriors. Studies indicate that each kilogram of dry algae consumes 1.83 kg of CO2 while offering applications as organic fertilizer, oil, and protein sources. This technology not only diminishes CO2 emissions but also transforms wastewater and generates bioenergy, catering to building energy requirements. Algal technology's economic and environmental significance becomes evident through carbon capture, energy generation, and circular waste management, aligning with sustainability principles. This study highlights the potential of algal technology to shape the future of eco-friendly conscious construction practices, providing avenues for reduced emissions, efficient energy utilization, and sustainable development.","PeriodicalId":507890,"journal":{"name":"Journal of Sustainable Construction Materials and Technologies","volume":" 42","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140685787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of calcination on the physical, chemical, morphological, and cementitious properties of red mud 煅烧对赤泥物理、化学、形态和胶凝特性的影响

Journal of Sustainable Construction Materials and Technologies Pub Date : 2023-11-19 DOI: 10.47481/jscmt.1376887

Venkatesh Chava, Sonali Sri Durga Chereddy

{"title":"Effect of calcination on the physical, chemical, morphological, and cementitious properties of red mud","authors":"Venkatesh Chava, Sonali Sri Durga Chereddy","doi":"10.47481/jscmt.1376887","DOIUrl":"https://doi.org/10.47481/jscmt.1376887","url":null,"abstract":"Red mud (RM) is a by-product of the Bayer process in aluminum industries, and its disposal leads to environmental imbalance. This study aimed to utilize RM as a cementing material in concrete to mitigate the negative environmental impact associated with its disposal. Initially, red mud was subjected to calcination at 600ºC for 0-6 hours with increments of 1 hour. Various characterization studies, including particle size analysis, BET analysis, XRF, XRD, TG-DTA, and SEM, were conducted to investigate the physical, chemical, and morphological changes in the RM resulting from calcination. Regarding the physical properties, specific gravity, and particle size values significantly decreased, while specific surface area and mass losses increased up to 2 hours of calcination due to moisture loss. Subsequently, contrasting results were observed. XRF analysis revealed abundant presence of iron oxide (Fe2O3), alumina (Al2O3), and silica (SiO2) in all the calcined red muds. Mineralogical phase changes, such as the transformation of goethite to hematite and gibbsite to alumina, were observed through XRD analysis. Morphological changes were observed using SEM analysis, showing a loose structure up to 2 hours of calcination, followed by a denser structure. Furthermore, all the calcined RMs were incorporated into cement at a 10% weight ratio, and their pozzolanic properties were investigated. Based on the results, the 2-hour calcined RM exhibited superior cementitious properties, including high compressive strength and strength activity index (46.27 MPa and 117.24%, respectively). Similarly, scanning electron microscope analysis was conducted to understand the behavior of the 2-hour calcined red mud in cement mortar, demonstrating better C-S-H gel formation in the corresponding mix. The present study concludes that 2-hour calcined red mud can be effectively used as a cementing material in concrete.","PeriodicalId":507890,"journal":{"name":"Journal of Sustainable Construction Materials and Technologies","volume":"38 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139259998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0