Study On Mechanical Properties Of Polypropylene Fiber Recycled Concrete

In the process of human development, technological progress, socialdevelopment, the construction industry is also constantly evolving. In today’s society,with the continuous development of the construction, more and more old buildings havebeen demolished. The abandoned concrete removed from the waste building is calledconstruction waste, construction waste not only affect human living environment, butalso cause environmental pollution, Therefore, how to deal with this garbage isbecoming increasingly important, gradually becomes a bottleneck of socialdevelopment and environmental protection. Recycled concrete technology is theprocessing of manufacturing the waste concrete as recycled aggregate for recycledconcrete. The use of recycled concrete reduces not only the mass exploitation of naturalaggregate resources, but also the human urban environmental pressures caused byconstruction waste, in this way we can achieve the sustainable development of resourcesand protection of the environment.However, Recycled concrete is not widely used in the actual project due to their owndefects. To transfer recycled concrete technology into a real productivity, researchersadd fibers as modified materials into recycled concrete, providing a reasonable solutionto comprehensive reuse for waste concrete. Polypropylene fiber recycled concrete isrecycled concrete doped with a certain amount of polypropylene fibers, using some ofits features to improve the adverse impact of the recycled aggregate defects to theconcrete, so as to effectively improve the recycled concrete strength.This paper experimentally study recycled aggregate, recycled concrete and the basicperformance of the fiber recycled concrete, starting from the re-use of waste concreteblock, based on recent domestic and external researches, regarding recycled coarse aggregate concrete with different lifetimes as study object.