硅酸盐通报2026，Vol.45Issue(4)：1151-1159,9.DOI:10.16552/j.cnki.issn1001-1625.2025.0955
海水珊瑚砂粉工程水泥基复合材料高温暴露后的性能研究
Properties of Seawater Coral Sand Powder Engineered Cementitious Composites after High-Temperature Exposure
摘要
Abstract
To enhance the application reliability of coral resources in marine concrete structures under high-temperature environments,this study investigated the effects of different coral sand powder(CSP)volume replacement ratios(0％,25％,50％,and 100％)on the residual compressive strength,spalling behavior,and microstructure of seawater coral sand powder engineered cementitious composites(SCECC)after high-temperature exposure.The test results show that SCECC with a 25％CSP volume replacement ratio maintains good load-bearing capacity and structural integrity below 400 ℃,whereas at a 100％volume replacement ratio,significant strength degradation and delayed spalling occur due to calcium carbonate decomposition and interfacial structure damage.Scanning electron microscopy analysis indicates that an appropriate amount of CSP can optimize the interfacial transition zone structure,while thermal decomposition at high temperatures disrupts the matrix continuity.This study elucidates the high-temperature damage mechanisms and interfacial response characteristics of CSP in SCECC,providing experimental evidence for the design and evaluation of engineered cementitious composites serving in high-temperature marine environments.关键词
工程水泥基复合材料(ECC)/珊瑚砂粉/高温暴露/残余抗压强度/剥落行为/微观结构Key words
engineered cementitious composites(ECC)/coral sand powder/high-temperature exposure/residual compressive strength/spalling behavior/microstructure分类
建筑与水利引用本文复制引用
洪川海,梁瑞庆,梁振升,张伯涛,唐雪梅,阮国威,林嘉祥..海水珊瑚砂粉工程水泥基复合材料高温暴露后的性能研究[J].硅酸盐通报,2026,45(4):1151-1159,9.基金项目
广东省基础与应用基础研究基金项目(2025A1515010255) （2025A1515010255）
