硅灰掺量对再生高延性水泥复合材料的力学性能和抗氯离子渗透性能的影响  

Effect of silica fume dosage on mechanical properties and anti-chloride ion penetration performance of recycled high ductility cementitious composites

作　　者：王洪涛 杨斌[2] WANG Hongtao;YANG Bin(Infrastructure and Logistics Management Department,Shenyang Jianzhu University,Shenyang 110168,China;School of Architecture Engineering,Jiangsu Open University,Nanjing 210036,China)

机构地区：[1]沈阳建筑大学基建与后勤管理处,辽宁沈阳110168 [2]江苏开放大学建工学院,江苏南京210036

出　　处：《混凝土》2025年第3期138-141,共4页Concrete

摘　　要：为提高高延性水泥基复合材料(HDCC)的环境和经济效益,探讨了不同硅灰掺量对再生高延性水泥基复合材料(R-HDCC)力学性能及抗氯离子渗透性能的影响.试验通过5种硅灰掺量率(2%、4%、6%、8%、10%)制备R-HDCC样品,评估其抗压强度、抗折强度、拉伸应力应变性能及抗氯离子渗透性能.结果表明:随着硅灰掺量的增加,R-HDCC的抗压强度先增大后减小,抗折强度逐渐降低,拉伸应力增大但应变下降.此外,硅灰的掺入显著改善了材料的抗氯离子渗透性能.通过力学和抗氯离子渗透性能研究,明确了硅灰掺量与R-HDCC性能之间的关系,为R-HDCC的组分设计提供了理论依据。In order to improve the environmental and economic benefits of high ductility cementitious composites(HDCC),it investigated the effects of different silica fume dosage rates on the mechanical properties and anti-chloride ion penetration performance of recycled high ductility cementitious composites(R-HDCC).The R-HDCC samples were prepared by five silica fume doping rates of 2%,4%,6%,8%,and 10%to evaluate their compressive strength,flexural strength,tensile stress-strain properties,and anti-chloride ion penetration performance.The results showed that with the increase of silica fume doping,the compressive strength of R-HDCC increased and then decreased,the flexural strength gradually decreased,and the tensile stress increased but the strain decreased.In addition,the silica fume doping significantly improved the anti-chloride ion penetration performance of the material.In this study,the relationship between silica fume doping and the performance of R-HDCC was clarified through the study of mechanical and anti-chloride ion penetration performance,which provided a theoretical basis for the component design of R-HDCC.

关 键 词：再生高延性水泥基复合材料 硅灰 力学性能 抗氯离子渗透 

分 类 号：TU528.041[建筑科学—建筑技术科学]