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.

This paper presents the results of an experimental investigation for the reuse of some locally available industrial waste materials namely, granulated blast-furnace slag (BFS), pulverized fuel ash (PFA), limonite, and silica fume (SF) in producing high strength concrete. Developing of high strength concretes has a worth priority field of study worldwide, their production is largely expanded in the last two decades. Potential applications of high strength concrete are in producing thin durable sections and in strengthening and repairing defaulted structures. The principal engineering properties of the developed concretes such as compressive strength, modulus of rupture, and modulus of elasticity were investigated. .The test results revealed that the resulting concretes have excellent strength properties superior to those made of only ordinary Portland cement. The suggested utilization of these industrial waste materials provides a useful mean of disposal for a considerable amount of these solid wastes and contributes in the environmental protection.