Abstract
Abstract The effect of sand particle size, shape and content on the solid-state deformation, flow and fracture behavior of sand-reinforced polyethylene (SRPE) composite samples was investigated. The overall response of the composite system is highlighted and analyzed in terms of the phenomena resulting from the mutual interaction between the constituent, sand filler and polymer matrix, phases. Sand of smaller particle size resulted in higher reinforcing ability. Below a sand particle size of 350 μm, a stiffening effect was observed as the sand content increased from 5 to 25 wt%. Larger particle size reduced the tensile modulus of the composite samples. The tensile strength was observed to be a decreasing linear function of the sand content, with a negative slope and depends on the sand particle size. The yield stress, ductility and energy absorbed to fracture were reduced with the sand addition.
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