焚烧底灰集料用于控制低强度材料:启示与应对策略

IF 1.6 4区 工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY Journal of Advanced Concrete Technology Pub Date : 2023-11-07 DOI:10.3151/jact.21.837
Wei-Chien Wang, Jia-Chen Xue, Chia-Yun Huang, Hsiao-Chuan Chang
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引用次数: 0

摘要

台湾的垃圾处理方法大多涉及焚烧,焚烧底灰(IBA)是多年积累的,需要紧急处理。因此,利用IBA创造可再生材料对可持续发展至关重要。在本研究中,用IBA代替了控制低强度材料(CLSM)中的天然聚集体。考察了其可加工性、凝结时间、单位重量、力学性能和环境影响。该研究还研究了CLSM的特点,并提出了改进的解决方案。结果表明,用IBA替代天然细集料对CLSM的工程性能影响最为显著。IBA显著提高了CLSM的和易性,降低了CLSM的单位质量,但CaSO4的存在对CLSM的凝固时间和力学性能有不利影响。但在使用前750℃处理可显著改善IBA- clsm的力学性能,缩短其凝结时间,使其成为一种潜在的永久性回填结构。毒性试验结果表明,生产的IBA-CLSM对环境安全没有威胁。研究证明,利用台湾产的IBA替代CLSM中的天然团聚体是一种可行且有效的方法。
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Incineration Bottom Ash as Aggregate for Controlled Low Strength Materials: Implications and Coping Strategies
Most waste disposal methods in Taiwan involve incineration, the incineration bottom ash (IBA) which is accumulated over the years and needs urgent treatment. Hence, using IBA to create renewable materials is essential for the sustainable development. In this study, natural aggregates in the controlled low strength material (CLSM) were replaced with IBA. Its workability, setting time, unit weight, mechanical behavior, and environmental impact were examined. The study also looked at the characteristics of CLSM and suggested solutions for improvement. The results showed that the substitution of natural fine aggregates with IBA had the most significant impact on the engineering properties of CLSM. IBA significantly improves the workability and reduces the unit weight of CLSM, but the presence of CaSO4 had a detrimental effect on its setting time and mechanical behavior. However, treating IBA at 750℃ before use significantly improved the mechanical properties of IBA-CLSM and shortened its setting time, making it a potential permanent backfill structure. The toxicity test results showed that the IBA-CLSM produced had no threat to environmental safety. The study proved that using IBA produced in Taiwan to replace natural aggregates in CLSM was feasible and an effective way to utilize IBA.
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来源期刊
Journal of Advanced Concrete Technology
Journal of Advanced Concrete Technology 工程技术-材料科学:综合
CiteScore
3.70
自引率
10.00%
发文量
45
审稿时长
3.5 months
期刊介绍: JACT is fast. Only 5 to 7 months from submission to publishing thanks to electronic file exchange between you, the reviewers and the editors. JACT is high quality. Peer-reviewed by internationally renowned experts who return review comments to ensure the highest possible quality. JACT is transparent. The status of your manuscript from submission to publishing can be viewed on our website, greatly reducing the frustration of being kept in the dark, possibly for over a year in the case of some journals. JACT is cost-effective. Submission and subscription are free of charge . Full-text PDF files are available for the authors to open at their web sites. Scope: *Materials: -Material properties -Fresh concrete -Hardened concrete -High performance concrete -Development of new materials -Fiber reinforcement *Maintenance and Rehabilitation: -Durability and repair -Strengthening/Rehabilitation -LCC for concrete structures -Environmant conscious materials *Structures: -Design and construction of RC and PC Structures -Seismic design -Safety against environmental disasters -Failure mechanism and non-linear analysis/modeling -Composite and mixed structures *Other: -Monitoring -Aesthetics of concrete structures -Other concrete related topics
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