利用废铸造砂和铸铁渣可持续生产砖:减少隐含能源、二氧化碳排放和成本

IF 8 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Nilay Kucukdogan
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引用次数: 0

摘要

废铸造砂(WFS)和铸铁渣(CIS)是世界范围内铸铁生产过程中产生的大量工业废物,其处理方法多种多样。在本研究中,这两种废弃物首次一起用于烧结砖的生产,以提供粘土替代,并减少隐含能量,二氧化碳排放和成本。改性砖由不同比例的WFS和CIS(均高达20% %)制成,并在850℃,950℃和1050℃下烧制。对砖的物理、机械和微观结构性能进行了评估,并对其蕴含的能量和二氧化碳排放量进行了评估。结果表明,在1050℃下烧制的砖符合高强度承重应用标准,吸水率在可接受范围内。使用20 % CIS和10 % WFS相比,参考砖的吸水率较低,而双组分混合物(5 % CIS + 10 % WFS)表现出优异的机械性能。显微组织分析证实,添加剂增强了砖基体的致密性。值得注意的是,结合WFS和CIS减少了15.22 %的隐含能量和15.87 %的二氧化碳排放,含有20% % WFS的砖的生产成本降低了2.11-2.23 %。能源成本被确定为主要费用,达到烧成温度所需的能量比烧成过程本身的影响更大。研究表明,WFS和CIS是可持续砖生产的有效添加剂,具有显著的环境效益和经济效益。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sustainable brick production using waste foundry sand and cast-iron slag: Reductions in embodied energy, CO₂ emissions, and cost
Waste foundry sand (WFS) and cast-iron slag (CIS) are industrial wastes that are generated in large quantities during the production of cast iron worldwide, and for which various solutions are sought for their disposal. In this study, these two wastes were used together for the first time in the production of fired bricks to provide clay substitution, as well as to reduce embodied energy, CO2 emissions, and costs. Modified bricks were produced with varying proportions of WFS and CIS (both up to 20 %) and fired at 850 °C, 950 °C, and 1050 °C. The physical, mechanical, and microstructural properties of the bricks were evaluated, along with an assessment of their embodied energy and CO2 emissions. Results showed that bricks fired at 1050 °C met the standards for high-strength load-bearing applications, with water absorption values within acceptable limits. Using 20 % CIS and 10 % WFS resulted in lower water absorption compared to reference bricks, while dual-component mixtures (5 % CIS + 10 % WFS) exhibited superior mechanical performance. Microstructural analysis confirmed that the additives enhanced the densification of the brick matrix. Notably, incorporating WFS and CIS reduced embodied energy by 15.22 % and CO2 emissions by 15.87 %, with bricks containing 20 % WFS being 2.11–2.23 % cheaper to produce. Energy costs were identified as the primary expense, with the energy required to reach firing temperature having a greater impact than the firing process itself. The study concludes that WFS and CIS are effective additives for sustainable brick production, offering significant environmental and economic benefits.
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来源期刊
Construction and Building Materials
Construction and Building Materials 工程技术-材料科学:综合
CiteScore
13.80
自引率
21.60%
发文量
3632
审稿时长
82 days
期刊介绍: Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.
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