Experimental Study On Basic Properties Of Synthetic Fibre Reinforced Lightweight Aggregate Concrete

In recent years, the research on lightweight aggregate concrete is more and more thorough, but lightweight aggregate concrete to bring us a series of lightweight, good anti-seismic performance and other advantages, has also exposed its flexural capacity, the lack of toughness.The polypropylene fiber concrete (PP) and polyvinyl alcohol (PVA) fiber concrete as the research object, to the analysis of synthetic fibers for light weight aggregate concrete mechanics performance.and shock resistance performance, mainly through the different fiber morphology and fiber volume fraction of two influence factors, the concrete compressive strength, splitting tensile strength, resistance bending strength and shock resistant ability analysis.Analysis of the contents include:(1) On2different types of fibers of the slump, basic mechanical properties and impact resistance comparison.The test results show that the PP fiber and PVA fiber significantly affects the mobility of concrete, the compressive strength of synthetic fiber reinforced concrete was essentially unchanged, and the splitting tensile strength and flexural strength were increased, PP fiber concrete impact ability is very good.(2) On the synthesis of fiber content by0,0.5%,1%,1.5%of the.The results show that, with the synthetic fiber content increases, the slump of concrete compressive strength decreases, slightly raised, splitting tensile strength, flexural strength does not change obviously, but when fiber content greater than1%, the mechanical properties of concrete, impact resistance decreased obviously.