硅烷偶联剂对HMWHDPE纤维及水泥混凝土韧性的影响  

Influence of Silane Coupling Agent to HMWHDPE Fiber and Cement Concrete Toughness

作　　者：徐秀维[1] 尹超[2] 李俊[2] 

机构地区：[1]常州工程职业技术学院,常州市213164 [2]长安大学特殊地区公路工程教育部重点实验室,西安市710064

出　　处：《公路》2014年第6期225-227,共3页Highway

摘　　要：采用硅烷偶联剂处理HMWHDPE纤维,研究了处理后纤维的亲水性能及其对混凝土力学性能的影响,采用SEM对微观处理机理进行了分析。结果表明:与处理前相比,处理后单纤维接触角降低达73.4%;处理后纤维混凝土的弯曲韧性指数I5、I10、I30分别提高了14.2%、38.4%和52.2%;SEM测试发现处理后纤维表面覆盖一层明显的吸附膜。Silane coupling agent is used to treat HMWHDPE fiber, thereinafter the hydrophilicproperties of treated fiber and its affection on the concrete mechanical behavior are studied, and the microprocessing mechanism by means of SEM is analyzed. The results show that： compared with that beforetreatment, the single fiber contact angle decreases by 73.4%; the fiber reinforced concrete flexuraltoughness index I5, I10 and I30 increase respectively by 14.2%, 38.4% and 14.2%; and SEM test foundthat the fiber surface after processing is covered with a layer of adsorbed film.

关 键 词：HMWHDPE 硅烷偶联剂 混凝土 韧性 

分 类 号：U414.03[交通运输工程—道路与铁道工程]