The aim of this study is to further the understanding of the
effects of rubber particle size on the properties of the resulting
concrete. To this end, three types of rubber particle samples with
singly-sized rubber particles, and a fourth with rubber particles
of varying sizes were used as part of the fine aggregate in concrete.
A series of tests, including workability and density at the
fresh stage, the cube compressive strength, the tensile splitting
strength, the flexural strength and water permeability at the
hardened stage were conducted according to relevant standards.
Test results were analyzed and discussed, leading to the conclusions
informing the tyre recycling industry to rationally design
the particle size distribution (PSD) of rubber particles as the
recycled aggregates.
2. Preparation of concrete
2.1. Materials