Open AccessPerformance of crushed rock dust concrete exposed to sulphuric and hydrochloric acid solutions
Author(s) -
N. Venkata Sairam Kumar
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/988/1/012021
Subject(s) - compressive strength , hydrochloric acid , sulfuric acid , filler (materials) , materials science , portland cement , composite material , cement , metallurgy
This paper presents the effect of partial substitute of Ordinary Portland Cement 53 grade (OPC) by crushed rock dust (CRD) as filler material in concrete when exposed to 2% and 5% diluted hydrochloric (HCl) and sulfuric (H 2 SO 4 ) acid solutions. OPC is partially replaced with CRD by: 0%-A40, 10%-A41, 20%-A42, 30%-A43 and 40%-A44 by weight. Visual assessment, mass loss and compressive strength are evaluated at the considered acid attack environment. The loss in compressive strength of CRD concrete has increased gradually with the increase in the CRD. It has been observed that the mass loss (%) and decrease in compressive strength of concrete cube specimens is found to be less in the case of HCl acid attack when compared with H 2 SO 4 acid attack. The use of CRD in concrete as filler material showed comparable trend of decline in the compressive strength of concrete after exposed to both H 2 SO 4 and HCl acid solutions.