Paper Details

Durability is defined as the capability of concrete to resist weathering action, chemical attack and abrasion whilemaintaining its desired engineering properties. It normally refers to the duration or life span of trouble-free performance.Different concretes require different degrees of durability depending on the exposure environment and properties desired.Ordinary Portland Cement (OPC) is one of the main ingredients used in the production of concrete. Large scale productionof cement is causing environmental problems on one hand and depletion of natural resources on other hand. This threat toecology has led researchers to use industrial by products as supplementary cementitious material in making concrete suchas Fly ash and rice Husk ash due to its huge production and also they causes environmental pollution.In this study, concrete of grade M25 with partial replacement of cement by nano rice husk ash (5, 10 and 15%) andnano fly ash (20, 30, 40 and 50%) and their combinations are prepared at a constant water/binder ratio of 0.5. A detailedexperimental study on Compressive strength and Durability tests including Chloride permeability, Acid attack, Alkalineattack and Sulphate attack at age of 28, 60 and 90 days are investigated experimentally and compared with Conventionalconcrete and combination of 20% nano FA and 5% Nano RHA proved to be optimum.

G.Chethan Krishna, N.R.Gowthami, T.Naresh Kumar, “Experimental Investigation on Durability Properties of Concrete using Hybrid material (Nano Rice Husk Ash and Nano Fly Ash) as a partial replacement of OPC”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 12, pp. 109-118, December 2017.