超韧水泥基复合材料力学性能试验研究

本文进行了普通混凝土和超韧水泥基复合材料抗压强度对比实验,实验结果表明纤维掺入虽然对强度提高不明显,但是显著改变其破坏形态。同时对两种不同掺量的国产纤维增强水泥基复合材料进行四点抗弯实验,试件尺寸为400mm×100mm×15mm,结果表明纤维掺量为2%的聚丙烯纤维增强水泥基复合材料韧性最好,其跨中位移达到35.6mm。

Experimental study on mechanical properties of super-tough cementitious composites

This paper experimentally compares the compressive strengths of concrete and super-tough cementitious composites.The results show that although the fiber incorporation does not increase the strength remarkably, it significantly changes the failure mode. At the same time, four-point bending tests are carried out on two domestic fiber reinforced cementitious composites with different amounts of fibers. The size of the specimen is 400 mm × 100 mm × 15 mm. The results show that the specimen with 2% polypropylene fiber has the best ductility, Its mid-span displacement reaches 35.6 mm.