Strength, durability, and microstructure of high-strength mortars incorporating various ground granulated blast furnace slag contents
Abstract
For resource efficiency as well as recycling industrial solid wastes, this study investigates the use of ground granulated blast furnace slag (GGBFS) in the production of high-strength mortars. The GGBFS contents used are 0%, 12%, 24%, 36%, and 48% of the total binder content. The changes in the engineering properties of the mortars with various GGBFS contents were examined through compressive strength, flexural strength, ultrasonic pulse velocity (UPV), rapid chloride ion penetration (RCPT), thermal conductivity, and microstructure tests. Obtained results indicate that the strength and durability of the mortars increased with the use of 12% and 24% GGBFS, meanwhile the use of 36% and 48% GGBFS resulted in a reduction in the mortar properties. However, all the mortars produced in this study exhibited good quality with high strength, a UPV value of higher than 4300 m/s, and excellent resistance to chloride attack.
Moraref