An Experimental Investigation on Acidic and Alkali Resistance of Ternary Blended Coir and Flax Concrete

Abstract

Natural fibres are added to M30 concrete to increase its strength and improve its resistance to cracking. M30 concrete is a type of high-strength concrete that is often used for the construction of buildings. Natural fibers such as coconut coir, flax, and sisal can be integrated into M30 concrete to enhance its durability and resistance. The inclusion of these fibres helps to reduce cracking and improve the overall structural integrity of the concrete when exposed to acidic and alkaline conditions. Present research focuses on hybridizing coir and flax with M30 concrete that has been tested for alkali resistance. A mixture of 3% coir and 1% flax samples were tested for different concentrations of alkaline. The ratio of sodium hydroxide to sodium silicate is 1:2, which is kept constant to prepare the mix. To prepare the mix, it is necessary to change the concentration of sodium hydroxide solution to 3, 4, and 6 Mole percentages. Samples were cured for 14, 28 and 56 days and the specimens were tested for mechanical properties to determine the durability of fibre mixtures in concrete. Better results found for the sample dipped in 4 mole for 56 days of curing after testing.