Open AccessEffects of Waste Hybrid Fibers with Different Mixing Ratios on Properties of Recycled Concrete
Author(s) -
Sisi Tian,
Hao An,
Zhengfu Hu,
Changchun Pei
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/563/2/022043
Subject(s) - materials science , polypropylene , flexural strength , ultimate tensile strength , composite material , aggregate (composite) , compressive strength , mixing (physics) , fly ash , properties of concrete , cement , physics , quantum mechanics
In order to improve the performance and application scope of recycled concrete and reduce environmental pollution, fly ash and recycled coarse aggregate of waste concrete were used to replace part of cement and part of natural coarse aggregate respectively, and recycled concrete of base group was mixed. The mixing amount of waste polypropylene fibers and basalt fibers was changed in recycled concrete of base group, and its fluidity and mechanical properties were analyzed. The experimental results show that the mixed fibers have little effect on the fluidity of recycled concrete, but the compressive strength, flexural strength and elastic modulus all decrease. However, they can enhance the splitting tensile strength of recycled concrete, and the strengthening effect is more obvious with the increase of the blending ratio of waste polypropylene fibers.