PVA纤维对水泥基材料性能的影响研究  

Study on the Influence of PVA Fiber on the Properties of Cement-based Materials

作　　者：乐睿 孙海燕 龚爱民 苗立川 赵杨 梅伟 LE Rui;SUN Haiyan;GONG Aimin;MIAO Lichuan;ZHAO Yang;MEI Wei(College of Water Resources and Hydraulic Engineering,Yunnan Agricultural University,Kunming 650201,China)

机构地区：[1]云南农业大学水利学院,云南昆明650201

出　　处：《粉煤灰综合利用》2020年第4期87-90,共4页Fly Ash Comprehensive Utilization

基　　金：云南省教育厅科学研究基金项目(2020J0242);云南农业大学自然科学青年科研基金项目(2016ZR15);云南农业大学科技创新创业行动基金项目(2019KFX019)。

摘　　要：通过对不同纤维掺量的PVA-ECC试件进行抗压强度和抗折强度试验以及干缩试验,探究PVA纤维对水泥基复合材料基本力学性能和干缩性能的影响。结果表明:PVA纤维的掺入,可以提高水泥基复合材料的抗折强度,在0~3.6kg/m^3的掺量区间内,PVA纤维掺量越大,P水泥基复合的抗折强度越大;PVA纤维的掺入可以提高水泥基材料的抗压强度,但是不显著;PVA纤维掺量1.8kg/m3时,其对水泥基材料的干缩有抑制作用。PVA-ECC specimens with different dosage of PVA fiber were tested for compressive strength,flexural strength and dry shrinkage,which contributed to study the influence of PVA fiber on mechanical properties and dry shrinkage properties of cement-based material.The results show that PVA fiber can improve the flexural strength of cement-based material.In the range of 0~3.6kg/m^3,with the higher dosage of PVA fiber,the higher flexural strength of cement-based material would be gained.The incorporation of PVA fiber can also improve the compressive strength of cement-based materials,but its effect is not significant.The dosage of 1.8kg/m3 PVA fiber can inhibit the dry shrinkage of cement-based materials.

关 键 词：PVA纤维 水泥基材料 抗压强度 抗折强度 干缩性能 

分 类 号：TU457[建筑科学—岩土工程]