Experimental investigation on high volume ground granulated blast furnace slag concrete

Abstract

The present confront among the construction industry is to curtail the production of the ordinary Portland cement (OPC), which is directly responsible to the emission of harmful gases like CO2 during the manufacturing and also depletion of natural resources like lime stone, coal etc. The present investigation is focused to develop the sustainable concrete using complementary cementing materials (CCMs) for the sustainable environment. Ground granulated blast furnace slag (GGBS) is one among the sustainable alternatives for ordinary Portland cement (OPC) to produce green concrete and because of its high calcium silicate content it has excellent cementious content and has been used in the construction industry for years as a replacement for ordinary Portland cement (OPC). The paper presents the performance of the Binary concrete made by replacing the OPC with high volume GGBS up to 70%. In total 6 binary mixtures and conventional mix were prepared for M40 grade of concrete. Flow characteristics and strength properties (compression, split tensile and flexural strength) are determined for both conventional and binary concrete at the age of 7, 28, 60, 90 days. The test results proved that the binary concrete had considerable performance regarding workability and strength of the binary concrete over conventional mix.