Experimental Study on the Effect of Short Basalt Fiber on Properties of Lightweight Aggregate Concrete

摘要

In this paper, the experimental study on the modification of lightweight aggregate concrete with different content of basalt fiber is carried out, and the results show that the: With the increase of amount of basalt fiber, lightweight aggregate concrete slump decreases; compressive strength increases gradually, when reaching a maximum and then decreased; the flexural strength is improved obviously, improves the ratio of flexural toughness is greatly improved. SEM photo shows that the interface of basalt fiber and cement paste is good, the porosity of concrete is decreased, and the frost resistance of concrete is significantly improved.