RICE HUSK ASH CONCRETE- COMPRESSIVE STRENGTH AND RCPT TEST

Abstract

In the ancient period, construction work was mostly carried out with help of mudstone from industry. Rice husk ash is the by –product of burned rice husk at higher temperature from paper plant. Considerable efforts are being taken worldwide to utilise natural waste and bye –product as supplementary cementing materials to improve the properties of cement concrete. Rice husk ash (RHA) and Fly ash (FA) is such materials. RHA is bye-product of paddy industry. Rice husk ash is a highly reactive pozzolanic material produced by controlled burning of rice husk. The project presents the experimental investigation conducted on Rice Husk Ash (RHA) concrete to evaluate the compressive strength and to study RCPT test. In the preparation of rice husk concrete, cement was replaced at various percentage levels such as 5%, 10%, 15% and 20%. The strength of the concrete increased with the levels of percentage of replacement of 5% & 10% at which the increase in strength was 10% & 27% at 28 days compared to normal concrete. From the test results of RCPT, it is found that as the cement replacement by rice husk ash level increases, the charge passed decreases.