Optimization of Red Sand Particle Size and Composition in Mixture with Ordinary Sand to Enhance Concrete Quality

Abstract In this study we determined the effect of variations in composition and particle size Red Sand (RS) grains on quality concrete. Concrete was prepared as cubes 15 cm 3 with a cement, sand gravel ratio 1:2:3 water to cement 0.5. Variations RS (fine aggregate) are 0 %, 5 10 20 % weight red grain were 80 mesh, 100 120 mesh. Mechanical properties maximum concrete pressure strength test at along decrease mesh 100-5 120-5 forces 35.4 MPa, 35.5 respectively. On other hand, have force 80-10 is 34.6 MPa. It considered addition fine aggregate has an impact improving