辽宁工程技术大学学报（自然科学版）2026，Vol.45Issue(1)：52-58,7.DOI:10.11956/j.issn.1008-0562.20250199
碳酸钙晶须对再生骨料混凝土性能影响
Effect of calcium carbonate whiskers on the properties of recycled aggregate concrete
摘要
Abstract
To enhance the mechanical properties and chloride ion penetration resistance of recycled aggregate concrete(RAC),RAC specimens were prepared by incorporating calcium carbonate whiskers(CW)with different content(volume fraction).The compressive strength,splitting tensile strength,and chloride migration coefficient were measured.The underlying mechanisms were analyzed using scanning electron microscopy(SEM)and the nitrogen adsorption method.The results indicate that the optimal performance of RAC is achieved with a 25%recycled aggregate(RA)replacement rate and a 0.8%CW volume fraction.However,excessive CW incorporation leads to agglomeration,which diminishes the improvement in RAC properties.CW optimizes the RAC matrix morphology through mechanisms such as pore-filling and crack-bridging,thereby improving its performance.These findings provide a theoretical foundation for the application of CW in RAC.关键词
再生骨料混凝土/碳酸钙晶须/抗压强度/劈裂抗拉强度/抗氯离子渗透性能Key words
recycled aggregate concrete(RAC)/calcium carbonate whiskers(CW)/compressive strength/splitting tensile strength/chloride ion penetration resistance分类
建筑与水利引用本文复制引用
阎杰,冯龙辉,梁重阳,王晓雨,杨博,谢军,贺艳..碳酸钙晶须对再生骨料混凝土性能影响[J].辽宁工程技术大学学报（自然科学版）,2026,45(1):52-58,7.基金项目
河北省建设科技研究指导性计划项目(2024-2187 （）
2024-2188) （）
