北京建筑大学学报2025，Vol.41Issue(2)：112-122,11.DOI:10.19740/j.2096-9872.2025.02.13
早强型高延性水泥基复合材料轴压力学性能试验研究
Experimental Investigation on Axial Compressive Behaviors of Cement-Based Composite Concrete with Early Strength and High Ductility Properties
摘要
Abstract
Cement concrete is widely used in various levels of highways,and it is prone to diseases such as cracking,potholes,and local collapse during operation.The maintenance and repair of existing cement concrete has become an important task in the daily operation and maintenance of roads and bridges.However,traditional cement-based repair materials have problems such as long maintenance periods and low bonding strength with existing concrete.In view of this,an early strength and high ductility cement composite material is proposed,aiming to achieve good curing age,compressive performance,and relatively low price.The compressive performance tests of a new type of composite material were conducted to study the effects of PVA fiber content,fly ash content,and sand cement ratio on the axial compression performance.The results show that the fly ash content is 50%when the PVA fiber content is around 2%and the sand cement ratio is 0.36,the compressive performance of early strength and high ductility cement composite materials at different ages is better.Under optimal mix ratio conditions,the axial compressive strength of early strength and high ductility cement-based composite materials at 2 hours,1 day,3 days,and 28 days reaches 18.1 MPa,27.5 MPa,34.4 MPa,and 37.6 MPa.The peak strain at each age is greater than 0.5%.关键词
水泥基修补材料/养护龄期/PVA纤维/轴压力学性能/高延性Key words
cement based repair materials/curing age/PVA fiber/axial compressive properties/high ductility分类
建筑与水利引用本文复制引用
江维洪,段文红,袁家权,许维炳,黄晓敏..早强型高延性水泥基复合材料轴压力学性能试验研究[J].北京建筑大学学报,2025,41(2):112-122,11.基金项目
国家自然科学基金项目(52108428 （）
52178446 （）
51978021 （）
51908015) （）
云南省交通厅科技支撑项目(云教科教便[2021]91号). （云教科教便[2021]91号）
