Experimental Investigation on durability properties of concrete modified with metakaolin

Authors

  • Mayuri Chandak, P. Y. Pawade

Abstract

Metakaolin being a pozzolanic material is extensively used as an additive mineral in concrete. The aim of this research is to study the influence of metakolin on the durability properties of concrete. Concrete durability cannot be underestimated as related with life span of structures. Durability or functional properties of concrete were experienced by examining the behavior of concrete with partial substitute of cement with metakaolin, exposed to acidic in addition to alkali environment in comparison to conventional concrete in respective environments. The concrete specimens in specific proportions with and without metakolin were casted. After demolding and 28 days normal tap water curing these specimens were immersed in acidic and alkali solutions using 3% sulphuric acid and 3% sodium hydroxide solution respectively for maximum period of 90 days. The mass loss and compressive strength of all specimens were noted according to time.  The present study confirms the improvements in the workability and compressive strength of concrete by replacing cement partially with metakaolin. Durability tests showed the positive impacts of metakaolin added to concrete. It was concluded that the inclusion of metakolin enhances the resistance of concrete to sulphuric acid up to a certain percentage and to sodium hydroxide is prominent.

Published

2020-11-01

Issue

Section

Articles