Compressive strength, porosity and sorptivity of ultra fine slag based high strength concrete

摘要

Ground granulated blast furnace slag (GGBFS) in the present research work was commercially available ultra fine slag of size 5 mu m meter was used which fills micro voids. This paper deals with compressive strength, porosity and sorptivity characteristics of commercially available ultra fine slag based high strength concrete (HSC) (with a characteristic compressive strength of 50 MPa). The results were compared with similar characteristics of precursor slag and ultra fine slag obtained by grinding (Sharmila and Dhinakaran, 2015). Ultra fine slag replaces cement with three different percentages viz 5, 10, and 15% to study the compressive strength, porosity and sorptivity. Performance of commercially available ultra fine slag was found to be inferior than ground one and concrete with 10% ultra fine slag was found to be optimum. (C) 2016 Elsevier Ltd. All rights reserved.