Synergistic Utilization of Marble Dust Powder and Rice Husk Ash as Partial Cement Substitutes in Sustainable Concrete for Green Construction

Today, green concrete’s production and use are mandated in an effort to lessen its harmful impact on the natural world. This research provides the investigation of cement replacement by MDP and RHA at varying concentrations in concrete. Many supplemental cements and pozzolanic materials are partly employed as replacement of cement in the concrete. Because of their negative effects on the environment, industries like the tile and rice milling now have to find ways to recycle their waste products. Marble has a long history of widespread usage in construction. Huge amount of powder dust is produced when marble is cut. Directly releasing this trash into the environment is harmful for our ecosystem. Rice Husk is a byproduct of the rice milling process in India. The husk itself contains around 75% organic content, and the remaining 25% is transformed into ash. The amorphous silica content of RHA is quite high, at about 85% to 90%. The characteristics of concrete may be enhanced by including RHA into the mix. Building using recycled materials such as marble dust and RHA instead of conventional cement is an environmentally friendly option. In this research, measures are taken to increase concrete’s eco-friendliness so that it may be used in "Green Buildings" The marble dust and RHA used in this lab experiment were sourced from nearby locations and processed there. The lab work was conducted at MRIEM in Rohtak. The impact of the partial replacement on concrete characteristics is investigated by changing the ratio of the two materials. The test results indicated that using a combination of marble powder and rice husk ash (RHA) as a partial cement replacement specifically at a 5% + 5% ratio yielded favorable outcomes. 15% substitution of both materials results in the highest tensile strength. The compressive strength of concrete decreases after reaching 10% MDP and RHA.