钢纤维改性环氧树脂砂浆力学性能  

Mechanical Properties of Epoxy Resin Mortar Modified with Steel Fiber

作　　者：陈静波[1] 邓安仲[2] 陈科[2] 刘奎[2] 

机构地区：[1]后勤工程学院化学与材料工程系,重庆401311 [2]后勤工程学院军事工程管理系,重庆401311

出　　处：《后勤工程学院学报》2016年第2期22-26,共5页Journal of Logistical Engineering University

基　　金：国家科技支撑计划项目(2012BAK05B00)

摘　　要：采用硅烷偶联剂对钢纤维表面改性,研究了不同体积分数、长径比和偶联剂改性前后钢纤维环氧树脂砂浆(SFEM)的力学性能,结果表明钢纤维对SFEM有显著增强作用。当钢纤维体积分数为2.0%,长径比为45,SFEM的抗折强度、抗压强度、峰值荷载和弹性模量达到最大值,较环氧树脂砂浆(EM)分别提高了51.73%,34.87%,39.98%和118.45%;钢纤维经偶联剂改性后,SFEM的抗折强度和抗压强度进一步提高,较改性前分别提高了10.52%和12.12%。The surface of steel fiber was modified with silane coupling agent. The mechanical properties of steel fiber epoxy resin mortar(SFEM) were studied with different volume fraction, aspect ratios, before and after the steel fiber modified with coupling agent. The results showed that steel fiber could effectively improve the strength of SFEM. The flexural strength, compressive strength, peak load and elastic modulus of SFEM reached the maximum value with the volume fraction of 2.0% and aspect ratio of45. In this case, compared with epoxy resin mortar(EM), the flexural strength, compressive strength, peak load and elastic modulus of SFEM increased respectively 51.73%, 34.87%, 39.98% and 118.45%. The flexural strength and compressive strength of SFEM increased by 10.52% and 12.12% compared with unmodified composite after modification of coupling agent.

关 键 词：环氧树脂砂浆 钢纤维 改性 力学性能 

分 类 号：TU528.41[建筑科学—建筑技术科学]