摘要
为研究纤维替代率对纤维增强水泥基复合材料(ECC)抗海水侵蚀能力的影响,本研究通过采用POM纤维逐步替代(0%、25%、50%、75%、100%替代率)PVA纤维制备ECC试块,并放入海水溶液中浸泡侵蚀30、60、90 d,研究不同纤维替代率下抗海水侵蚀性能变化及其影响因素。结果表明:试块的弯拉强度和质量随浸泡时间的增加呈先增加后减小趋势;混掺纤维组纤维损失率小于单种纤维组;海水侵蚀深度随纤维替代率的增加呈先减小后增加趋势。在替代率为50%时孔隙率和侵蚀深度达到最低,表现出较好的纤维杂化效果,弯拉强度高、抗海水侵蚀能力强。
In order to study the effect of fiber substitution rate on the resistance of fiber-reinforced cementitious composites(ECC)to seawater erosion and to reduce the production cost,in this study,ECC specimens were prepared by gradually substituting POM fibers for PVA fibers(0%,25%,50%,75%,and 100%substitution rate).The ECC specimens were put into seawater solution for immersion and erosion to study the changes of seawater erosion resistance under different fiber substitution rates and its influencing factors.The results showed that the bending and tensile strength and mass of the test blocks increased first and then decreased with the increase of soaking time.The fiber loss rate of the mixed fiber group was smaller than that of the single fiber group.The depth of seawater erosion with the increase of fiber substitution rate showed a trend of decreasing first and then increasing.The porosity and erosion depth reached the lowest when the substitution rate was 50%,showing better fiber hybridization effect,high bending and tensile strength,and strong resistance to seawater erosion.
作者
周利剑
胥立广
张睿
卢召红
邓华
ZHOU Lijian;XU Liguang;ZHANG Rui;LU Zhaohong;DENG Hua(School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing 163318,Heilongjiang China)
出处
《河南科学》
2025年第2期218-224,共7页
Henan Science
基金
黑龙江省自然科学基金联合引导项目(LH2020E018)
大庆市指导性科技计划项目(zd-2023-35)
国家自然科学基金资助项目(52174021)。
关键词
纤维替代率
海水侵蚀
弯拉强度
侵蚀深度
POM纤维
PVA纤维
fiber replacement ratio
seawater erosion
bending tensile strength
depth of erosion
POM fiber
PVA fiber
