Performance of Groundnut Husk Ash (GHA) - Rice Husk Ash (RHA) Modified Concrete in Acidic Environment

摘要

This paper presents the findings of an investigation on the compressive strength of concrete containing Groundnut Husk Ash (GHA) blended with Rice Husk Ash (RHA) and its resistance to acid aggression, as well as regression models of the concrete resistance in acidic environment. The GHA and RHA used were obtained by controlled burning of groundnut husk and rice husk, respectively in a kiln to a temperature of 600 oC, and after allowing cooling, sieved through sieve 75 μm and characterized. The compressive strength of GHA-RHA-Concrete was investigated at replacement levels of 0, 10, 20, 30 and 40 %, respectively by weight of cement.