Concrete Road Pavement Quality: The Impact of Tertiary Blending with Cement

Abstract

All across the world, concrete is the most often used construction material. Many different building applications use concrete as their main material. Were strength, durability, impermeability, fire and abrasion resistance are required, this is the material of choice. Determine the compressive, split tensile, and flexural strengths of a concrete mix with M25 grade is the main goal of this work. In addition, Marble Dust (MD) and Micro Silica (MS) are used in part place of cement in the research. Our study covers the process of Tertiar Blending cement with Marble dust (MD) and Micro Silica (MS). Substances call Supplemental cementitious materials (SCMs) are added to concrete to increase its durability and strength. Significant advances in the concrete industry have come from the application of SCMs, including resource conservation, environmental preservation, energy and cost reductions. Use of surplus materials can result in less cement being used. Significant study has been done on using marble dust and micro silica in place of cement, and the results have shown to be good for strength and durability. Currently used, tertiary blending is the process of combining cement with two Supplementary Cementitious Materials (SCMs) to improve concrete performance. However, by utilizing a quaternary blend, which can better optimize the properties of concrete, there is possibility for further improvements. The aim of this work is to develop a mixture design for Tertiary Cement Concrete that uses industrial waste products, marble dust and micro silica, as Supplementary Cementitious Materials. The objective is to assess, using water to cement ratios of 0.40, the mechanical characteristics of concrete with a grade of M 25 in moderately exposed situations. Ten combinations in all were made, with different amounts of marble dust (MD) and micro silica (MS). Three groups were formed out of the mixtures, with 6%, 7%, and 8% of Micro Silica (MS) kept constant with MD variances ranging from 5% to 15%. The compressive strength of the concrete mixes including Tertiary mixing—was assessed seven and twenty-eight days after curing. Using 0.6% of Super Plasticizer in the mixture has shown that fresh concrete is workable within the 110–140 mm slump value range. The slump value has been found to reach 140 mm for the combinations with lower blending percentages and a 0.4 water-to- cement ratio. The density of the just mixed concrete is then measured and compared to the density attained after 28 days of curing. Combining 5% Marble Dust (MD) and 8% Micro Silica (MS) with a 0.40 water-to-cement ratio (W/C) produced the best compressive strength. Compressive strength significantly decreased at all phases of growth when Micro Silica was substituted at a rate of 6 to 8% and Marble Dust at a rate of 10 to 15%. Therefore, the concrete mixture including 5% MD and 8% MS replacement can potentially yield superior outcomes, making it a viable and fitting material for rigid pavement.