Abstract
This study investigates the progressions in mechanical properties of concrete by substitution of cement by Rice Husk Ash (RHA) in conjunction with superplasticizers. Rice husk is a by-product of the rice milling process, with inexact generation of 200 kg for every one ton of rice. Diffusion of Rice Husk Ash in the concrete matrix enhance the properties of the concrete. This investigation has been done to determine the strength parameters of concrete with various extents of cement supplemented by Rice Husk Ash. M20 grade concrete (Designed as per Indian standards) was tried with substitutions by weight of the cement amount by 2.5%, 5%, 7.5%, 10% and 15%. Various strength Test results reveal enhancement of strength at 5% substitution of cement by rice husk with compressive strength and flexural strength having an increment of 9.78% and 25.09% respectively as compared to the control mix. Pulse velocity test of the modified concrete at 5% replacement of cement by rice husk ash confirms it as a “good” dense Concrete matrix.
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