Yan Xia, Daquan Shi, Yading Zhao, Jian Wang, Xiaobing Ma, Kunyang Yu, Huanyu Li, Lei Wang, Jianhua Yan
{"title":"污水污泥与稻壳混烧灰低碳超高性能混凝土的设计","authors":"Yan Xia, Daquan Shi, Yading Zhao, Jian Wang, Xiaobing Ma, Kunyang Yu, Huanyu Li, Lei Wang, Jianhua Yan","doi":"10.1617/s11527-024-02535-3","DOIUrl":null,"url":null,"abstract":"<div><p>Ultra-high performance concrete (UHPC) exhibits excellent mechanical properties and durability. However, UHPC requires high content of cementitious materials, associating with high carbon footprints and economic cost. This study aimed to investigate the effects of co-combustion ash of sewage sludge and rice husk (CCA) in UHPC on the hydration mechanism, microstructure, mechanical properties and environmental impact. CCA-based UHPCs were designed by replacing cement or SF with CCA at replacement percentages of 5, 10, 15 and 20 wt%. The results indicated that CCA exhibited excellent pozzolanic reactivity. The maximum compressive strength of CCA-based UHPC exceeded 130 MPa. The total reaction degree of cementitious materials was increased by the incorporation of 10 wt% CCA, thus enhancing the strength development of UHPCs. Besides, additional C–A–S–H gels generated via the pozzolanic reaction of CCA, which increased the length of silicate chain of C–A–S–H gels and refined the pore structure of CCA-based UHPCs. Life-cycle assessment results revealed that replacing 20 wt% cement with CCA could reduce carbon emissions and fossil fuel depletion of UHPCs by 12% and 16%, respectively. Hence, the innovative approach of this study can recycle CCA to manufacture UHPCs with excellent performance and environmental benefits.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"58 1","pages":""},"PeriodicalIF":3.4000,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Designing low-carbon ultra-high performance concrete with co-combustion ash of sewage sludge and rice husk\",\"authors\":\"Yan Xia, Daquan Shi, Yading Zhao, Jian Wang, Xiaobing Ma, Kunyang Yu, Huanyu Li, Lei Wang, Jianhua Yan\",\"doi\":\"10.1617/s11527-024-02535-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ultra-high performance concrete (UHPC) exhibits excellent mechanical properties and durability. However, UHPC requires high content of cementitious materials, associating with high carbon footprints and economic cost. This study aimed to investigate the effects of co-combustion ash of sewage sludge and rice husk (CCA) in UHPC on the hydration mechanism, microstructure, mechanical properties and environmental impact. CCA-based UHPCs were designed by replacing cement or SF with CCA at replacement percentages of 5, 10, 15 and 20 wt%. The results indicated that CCA exhibited excellent pozzolanic reactivity. The maximum compressive strength of CCA-based UHPC exceeded 130 MPa. The total reaction degree of cementitious materials was increased by the incorporation of 10 wt% CCA, thus enhancing the strength development of UHPCs. Besides, additional C–A–S–H gels generated via the pozzolanic reaction of CCA, which increased the length of silicate chain of C–A–S–H gels and refined the pore structure of CCA-based UHPCs. Life-cycle assessment results revealed that replacing 20 wt% cement with CCA could reduce carbon emissions and fossil fuel depletion of UHPCs by 12% and 16%, respectively. Hence, the innovative approach of this study can recycle CCA to manufacture UHPCs with excellent performance and environmental benefits.</p></div>\",\"PeriodicalId\":691,\"journal\":{\"name\":\"Materials and Structures\",\"volume\":\"58 1\",\"pages\":\"\"},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2024-12-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials and Structures\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1617/s11527-024-02535-3\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CONSTRUCTION & BUILDING TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials and Structures","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1617/s11527-024-02535-3","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
Designing low-carbon ultra-high performance concrete with co-combustion ash of sewage sludge and rice husk
Ultra-high performance concrete (UHPC) exhibits excellent mechanical properties and durability. However, UHPC requires high content of cementitious materials, associating with high carbon footprints and economic cost. This study aimed to investigate the effects of co-combustion ash of sewage sludge and rice husk (CCA) in UHPC on the hydration mechanism, microstructure, mechanical properties and environmental impact. CCA-based UHPCs were designed by replacing cement or SF with CCA at replacement percentages of 5, 10, 15 and 20 wt%. The results indicated that CCA exhibited excellent pozzolanic reactivity. The maximum compressive strength of CCA-based UHPC exceeded 130 MPa. The total reaction degree of cementitious materials was increased by the incorporation of 10 wt% CCA, thus enhancing the strength development of UHPCs. Besides, additional C–A–S–H gels generated via the pozzolanic reaction of CCA, which increased the length of silicate chain of C–A–S–H gels and refined the pore structure of CCA-based UHPCs. Life-cycle assessment results revealed that replacing 20 wt% cement with CCA could reduce carbon emissions and fossil fuel depletion of UHPCs by 12% and 16%, respectively. Hence, the innovative approach of this study can recycle CCA to manufacture UHPCs with excellent performance and environmental benefits.
期刊介绍：
Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.
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