Assessment of mechanical properties of HDPE composite with addition of marble and granite dust

The possibility of using marble and granite dust in the industry was investigated. The reuse of waste is expected to reduce cost, ensure sustainability and green solution. This study was focused on the source of this waste, amount and effect on the environment. It is intended to use this marble and granite dust as dispersed particles in high density polyethylene to obtain a novel composite material. The effect of marble and granite dust weight percentage (10–70 wt%) and the particle size (75–2300 μm) on the mechanical properties of the composite were studied. In this work, thermal degradation and chemical composition of the marble and granite dust were also determined. The experimental results showed that by increasing the dust percentage, flexural strength and elastic modulus increased. The fracture surface of the tested specimens under impact was studied using scanning electron microscopy.