A Review on the Impact of Rice Husk Ash and Marble Waste Powder on Concrete Properties.

Abstract:

Cement has been a staple in the construction industry for decades, performing admirably when properly mixed. However, cement production is accompanied with a lot of CO2 emissions, contributing to environmental pollution and ozone layer depletion. To mitigate these effects and reduce reliance on conventional concrete materials, exploration of alternative materials is essential. Researchers have investigated industrial and agricultural waste as potential cement supplements, but many of these waste products pose disposal and health challenges. Instead of discarding these materials, their proper utilization can yield positive environmental benefits. This review focuses on the feasibility of incorporating rice husk ash (RHA) and marble waste (MW) into concrete production. It examines the environmental, and economic advantages of using RHA and MW, as well as their impact on mechanical and durability properties of concrete like the compressive strength, durability, splitting tensile strength, permeability, water-cement ratio, workability and thermal properties. Additionally, the review explores various approaches and methodologies for integrating these materials into concrete mixes. Numerous research studies have evaluated the effectiveness of utilizing MDP and RHA in manufacturing concrete. Key findings indicate that the maximum benefit of replacing cement with RHA occurs at a 15% substitution level. Furthermore, marble waste, owing to its high calcium oxide (CaO) content, can also serve as a cement supplement. Marble powder, with its fine particle size, can replace fine aggregates in concrete, enhancing filler effects and reducing porosity, resulting in denser and more durable concrete. Additionally, marble waste can potentially substitute for coarse aggregates in concrete production.