Abstract
For many years, concrete has been the most commonly used building material. When we focus on sustainable materials, long-term serviceability becomes an issue. There are methods for lowering risks and increasing service life. Crystalline admixtures, also known as permeability-dropping, are marketable products used in little concentrations in cement incorporated materials to enhance concrete durability and promote autogenous crack healing. This paper presents various investigations into the mechanical and long-term durability characteristics of concrete made with Fly ash, M-sand, Dust. In this study, fly ash is used as a 30% substitute for cement, M-sand and Dust is used as a 100% substitute for river sand and two types of crystalline admixtures with different proportions of 0%, 0.5%, 1.0%, and 1.5% were added to the mix. Cubes and Cylinders were casted by mixing M-Crete and Master Pel 760 crystalline admixtures for two grades, M25 & M35 and left for curing period of 28 days. Test methods include compressive strength, split-tensile strength, RCPT, % of water absorption and % of Voids. The test results showed that both crystalline admixtures with Fly ash at 0.5% produced better results and significant rise in compressive strength and tensile strength. Similarly, a decrease in percentages of RCPT, water absorption, voids was observed in both M25 and M35 grades. Finally, Master Pel 760 has shown better performance than M-Crete crystalline admixture. So, the above two crystalline admixtures have the potential to increase the durability and decrease the permeability of concrete.
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More From: IOP Conference Series: Earth and Environmental Science
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