硅酸盐通报2026，Vol.45Issue(4)：1132-1141,1150,11.DOI:10.16552/j.cnki.issn1001-1625.2025.0931
自然风化作用下碳化养护水泥基材料的力学性能劣化机制
Mechanisms of Mechanical Property Degradation of Carbonation Curing Cement-Based Materials under Natural Weathering
摘要
Abstract
Carbonation curing can accelerate the early strength development of cement-based materials while sequestering carbon dioxide.However,the degradation mechanisms affecting their mechanical properties during service life remain unclear.This study exposed cement paste specimens to natural environmental conditions to investigate the effect of carbonation curing compared to conventional water curing under different weathering durations(30,60,and 90 d).The composition,pore structure,and both macroscopic and microscale mechanical properties of the weathered specimens were systematically analyzed.The results indicate that,in the later stage(90 d)of weathering,specimens carbonation curing for 0.5 h and 1 d show 15.1％and 34.7％higher compressive strength,and 1.4％and 3.6％higher average microhardness,respectively,than the conventional water curing specimens.This improvement is attributed to the formation of a dense carbonate layer in sample during carbonation curing.Moreover,with extended carbonation duration,the nanoindentation modulus at the specimen surface increases significantly.These findings demonstrate that carbonation curing significantly enhances the weathering resistance of cement-based materials,providing an important basis for its application in this field and a useful reference for the deployment of early-age carbonation curing products in coastal regions.关键词
水泥基材料/碳化养护/风化作用/力学性能/纳米压痕模量Key words
cement-based material/carbonation curing/weathering/mechanical property/nanoindentation modulus分类
建筑与水利引用本文复制引用
杨雪滢,王开元,王耀城,占宝剑,邢锋..自然风化作用下碳化养护水泥基材料的力学性能劣化机制[J].硅酸盐通报,2026,45(4):1132-1141,1150,11.基金项目
国家自然科学基金面上项目(52178235) （52178235）
深圳市科技计划项目(KCXST20221021111205012) （KCXST20221021111205012）
