An Experimental Investigation of Natural Admixture Effect on Durability Studies of High Silica Fly Ash

Abstract The research work focused on durability studies of high silica fly ash i.e. class f fly ash (fa) replaced concrete with natural admixture (nad) incorporation with binder. broiler hen egg selected as natural admixture in this experimental investigation. fa was replaced to cement at different replacement levels from 0 to 35% of replacement by its weight and nad was used as supplementary material admixture in fa replaced concrete at different replacement dosages from 0% to 1.00% by its weight of water content and 0.5 was maintained as liquid to binder ratio. the durability studies (i.e. water absorption and acid attack) of fa replaced concrete mix were examined at different ages of curing for all fa replaced mixes with nad. the research revealed that the optimal dosage of nad was considered as 0.25% for all fa replaced concrete, witnessed from the compressive strength, unit weight, water absorption and acid resistance studies. the studies evidenced that 35% high silica fa replaced concrete mix with optimal nad dosage having lower water absorption and also it shown that the % of loss in compressive strength reduced when soaked in HCL and H 2 SO 4 water sample.