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Abstract

Waste rubber materials can be recycled to obtain rubber aggregates, which can be employed in cement concrete products. This paper carried out mechanical performance tests on ordinary concrete and rubber concrete (rubber substitution rate of 20%) with different fiber combinations (doped MS, co-doped PP, and mixed MS-PP), and mainly examined the slump, density, compressive strength, modulus of elasticity, split tensile strength, and rupture strength of the concrete. The results show that the relevant performance indexes decrease significantly after 20% of rubber aggregate is added to the concrete. However, the mechanical performance of ordinary concrete and rubber concrete with the combination of 0.9MS+0.1PP and 0.8MS+0.2PP fiber is improved in all aspects. Therefore, the mixing content of rubber aggregate should be strictly controlled in the actual production of rubber concrete, and the steel fiber and polypropylene fiber can be mixed to improve the quality of concrete products if necessary.

Publication Date

9-14-2023

DOI

10.14048/j.issn.1671-2579.2023.04.044

First Page

274

Last Page

279

Submission Date

March 2025

Reference

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