摘要
土木工程中构件受拉区的变形和裂缝影响其承载力和正常使用,因此研究受拉构件的传感材料有重要意义。本文在环氧树脂混凝土中掺入石墨和钢珠,制成一种新型环氧树脂基混凝土材料,通过改变钢珠掺量,测试试件在单调受拉和循环受拉下的应变-电阻变化关系。试验结果表明,该材料在受拉荷载下具有良好的灵敏度和重复性。若将其作为传感材料运用于构件中,可以对受拉区的变形及裂缝进行有效监测。
In the civil engineering,the bearing capacity and the normal use of the member are affected by deformation and cracks of its tension zone. So it is important to study the sensing material of the tensile member. In this paper,graphite and steel bead are mixed with epoxy resin concrete to make a new type of epoxy resin-based concrete. The strain-resistance relationship of the specimen under monotonous tension and cycle tension is tested with different content of steel bead. The results show that the material has good sensitivity and repeatability under the tensile load. If used as a sensor in the member,the deformation and cracks of the tension zone can be effectively monitored.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2017年第8期2565-2569,共5页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金项目(51478209)
关键词
石墨
钢珠
环氧树脂混凝土
拉敏特性
灵敏度
graphite
steel bead
epoxy resin concrete
pull-sensitive property
sensitivity
