Experimental Study on Compressive Strength and Flexural Rigidity of Epoxy Granite Composite Material

Abstract

In Egypt, large quantities of coarse granite wastes are produced annually during the quarrying operations of granite rocks. This waste represents a potentially useful source of material for a variety of applications such as a filler material in epoxy granite composite material. In this work a new eco-friendly composite material studied as a substitute for machine tools traditional materials, like cast iron, to produce better efficiency with lower cost. This study aims to investigate the mechanical properties of granite epoxy composite by using the local epoxy (kemapoxy 150) and the granite residues in the Egyptian quarries. The investigated processing variable was epoxy content, and the mechanical characterization ware carried out by compressive and flexural tests according to the ASTM standard method B. Commercially available, Aswan red granite was procured, crushed, and sieved to three size ranges from 0.150 to 8 mm, respectively. Epoxy ratios of 80:20, 85:15 have been used with granite aggregate size mix with small, medium, and coarse size proportions of 50:25:25 respectively for preparing the specimens with granite granular size range (0.150-8) mm. The results show that Epoxy granite composite with granite to epoxy ratio of 80:20% wt. induced the highest compressive strength (72.15 MPa) while the composite with the ratio of 85:15% wt. induced the highest flexural strength (20.1 MPa). Epoxy granite composite show superior results with respect to cement concrete, polyester concrete, and natural granite.

Topology optimization-based design, development and testing of steel-reinforced epoxy granite vertical machining centre column

“…From the experiments conducted by Omar et al, 31 D’Mello et al 32 and Chinnuraj et al 33 using EG composite with different epoxy-to-granite proportions, the mix with 20% epoxy resin and 80% granite by weight exhibited the highest compressive strength and had comparable flexural strength. Hence, the same mixture composition was selected for fabrication.…”

Mechanical properties and damping characteristics of Egyptian granite-epoxy composite material

“…The tests showed increasing in the natural frequency, making it more resistant to vibrations and improving overall machine stability. Omar et al [22] investigated the influence of the epoxy content on the compression and flexural strengths of the granite-epoxy composite for granite/epoxy ratios of 80:20 wt% and 85:15 wt%. The maximum strengths of the material observed at 20 wt% epoxy ratios.…”