Durability study on multiple grades of concrete with terinary blend supplementary cementitious materials

Abstract

The possibility of using the supplementary cementitious materials (SCM’s) in order to suppress the impact of CO2 emissions and preserve the natural resources from manufacturing of cement is being explored for further refinement in the field of construction. In this paper, GGBS and Fly Ash have been utilized as a replacement for cement in 3 different grades, apart from studying the mechanical properties of the blended concrete we are learning durability characteristics for sulphuric acid, sulphate and chloride attacks through experimental research. The replacements of SCM’s are from 40% to 60% relative in percentage with cement weight (Cement: SCM’s) with 3 proposed mixes (PM) established under the name PM1 (60:40), PM2 (50:50) and PM3 (40:60) for 3 different grades namely ordinary (M20), standard (M40) and high strength concrete (M60). The best proposed mix is selected among the three mixes of each grade depending upon the withstanding capacity of loss in mass and compressive strength when subjected to chemical exposure. The chloride ingress percentage is also calculated from the cubes subjected to chloride attack. The 50% replacement to cement is expected to satisfy the required durability criteria of all the three grades.