Mechanical and microstructural characteristics of ternary blended mortars incorporating GGBS and alccofine subjected to acid and sulphate exposure

Abstract

This experimental study has been carried out to investigate the behavior of ordinary cement mortars and mortars containing ternary mixtures of supplementary cementitious materials(SCM’s) like Ground Granulated Blast Furnace Slag(GGBS), Alccofine along with cement,when subjected to exposure in magnesium sulphate and sulphuric acid solution. Mixes were prepared by replacing OPC with 30% and 50% by GGBS along with 5%,10% and 15% by Alccofine as additives. Compressive strength test were performed on different samples to observe SCMs behavior in different exposure conditions (acid and sulphate)after 56 days. Microstructure studies using scanning electron microscopy(SEM) and electron dispersive X-ray(EDX) analysis were performed on samples after different exposure conditions.