"An Investigation of the mechanical properties of Marble Dust and Silica Fume substituted Ordinary Portland Cement" (KEY IJP************623)

• Roshan Singh,Prof. Kamlesh Kumar Choudhary

Abstract

The use of Marble powder and silica fume in concrete is abounded with data from mechanical and chemical strengths to assess the material parameters. Studies focusing on material properties with different replacement of cement with Marble powder and silica fume are presented and on structural component with use of multi blend concrete and fiber concrete composites. It has been found the workability of concrete has increased and the amount of cube compressive strength has been decreased and on significant effect has been noted on impact strength of plain concrete. M30 grade of concrete is used in this experiment and O%,5%,10%,15%, 20%,25%, 30%,35% and 40% of Marble powder and silica fume were used as a cement replacement (by weight). The specimens for testing were prepared, the cube, Beams are cured for 7 & 28 days. All the properties were determined by performing different tests like flexural strength and compressive strength and. At last, workability, setting time, compressive strength is investigated. The results of the Compressive Strength (Nmm2) show the replacement of silica fume and marble powder separately and the mixing of both for cement in the concrete 24.22 Nmm2 -26.44 Nmm2 in 9.18 % ,24.27 Nmm2-26.49 Nmm2 in 9.14 %, 24.36 Nmm2-26.76 Nmm2 in 9.83 % at 7 days. The results of the Compressive Strength (Nmm2) show the replacement of silica fume and marble powder separately and the mixing of both for cement in the concrete 38.67 Nmm2- 41.78 Nmm2 in 8.04 %, 38.44 Nmm2- 41.56 Nmm2 in 8.10 %, 38.89 Nmm2- 42.44 Nmm2 in 9.15 % at 28 days. The results of the Flexural Strength (Nmm2) show the replacement of silica fume and marble powder separately and the mixing of both for cement in the concrete 4.83 Nmm2 - 5.29 Nmm2 in 9.27 % ,4.86 Nmm2 -5.27 Nmm2 in 8.46 % ,4.89 Nmm2-5.25 Nmm2 in 7.43 % at 28 days.