关键词: 石墨;钢珠;环氧树脂混凝土;拉敏特性;灵敏度

Abstract: 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.

Key words: graphite;steel bead;epoxy resin concrete;pull-sensitive property;sensitivity