有机纤维对工程地聚合物复合材料早期力学性能的影响  

Effect of organic fibers on early mechanical properties of engineering geopolymer composites

作　　者：王红建 陈壮 赵禹兴 李晓岩 陈木群 徐方[2] WANG Hongjian;CHEN Zhuang;ZHAO Yuxin;LI Xiaoyan;CHEN Muqun;XU Fang(Shandong High Speed Maintenance Group Co.,Ltd.,Jinan 250032,China;Faculty of Engineering,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]山东省高速养护集团有限公司,山东济南250032 [2]中国地质大学(武汉)工程学院,湖北武汉430074

出　　处：《混凝土与水泥制品》2023年第12期65-69,共5页China Concrete and Cement Products

基　　金：湖北省交通运输厅科技计划项目(2022-11-6-1);山东省企业技术创新项目(202160101791)。

摘　　要：研究了分别单掺与混掺PVA纤维和POM纤维对工程地聚合物复合材料(以下简称EGC)早期力学性能的影响,并进行了XRD和SEM分析。结果表明:单掺PVA纤维能较好地提高EGC的抗折强度;单掺POM纤维对EGC弯折次数的提高效果明显;与单掺纤维相比,混掺适量PVA纤维和POM纤维能够更加均衡地改善EGC的脆性;PVA纤维主要通过与基体间的黏结作用改善EGC的脆性;POM纤维主要通过与基体间的摩擦、切削作用消耗断裂能,从而改善EGC的脆性。The effects of single addition and composite addition of PVA fiber and POM fiber on the early mechanical properties of engineering geopolymer composites(EGC)were studied,and the XRD and SEM analyses were conducted.The results indicate that the single addition of PVA fiber can effectively enhance the flexural strength of EGC.The single addition of POM fiber can significantly increase the bending times of EGC.Compared with single addition of fiber,composite addition of PVA fiber and POM fiber can more evenly improve the brittleness of EGC.PVA fiber mainly improves the brittleness of EGC by bonding with the matrix.POM fiber mainly consumes fracture energy through friction and cutting with the matrix,thereby improving the brittleness of EGC.

关 键 词：有机纤维 工程地聚合物复合材料 早期力学性能 抗折强度 机理 

分 类 号：TU528.572[建筑科学—建筑技术科学]