Abdul Khaliq Amiri and Shigeyuki Date
Effect of CarbonFree Fly Ash and Ground Granulated BlastFurnace Slag on Compressive Strength of Mortar under Different Curing Conditions
182 - 186
2021
15
4
International Journal of Civil and Environmental Engineering
https://publications.waset.org/pdf/10011975
https://publications.waset.org/vol/172
World Academy of Science, Engineering and Technology
This study investigates the effect of using carbonfree fly ash (CfFA) and ground granulated blastfurnace slag (GGBFS) on the compressive strength of mortar. The CfFA used in this investigation is highquality fly ash and the carbon content is 1.0 or less. In this study, three types of blends with a 30 waterbinder ratio (wb) were prepared control, binary and ternary blends. The Control blend contained only Ordinary Portland Cement (OPC), in binary and ternary blends OPC was partially replaced with CfFA and GGBFS at different substitution rates. Mortar specimens were cured for 1 day, 7 days and 28 days under two curing conditions steam curing and water curing. The steam cured specimens were exposed to two different precuring times (1.5 h and 2.5 h) and one steam curing duration (6 h) at 45 °C. The test results showed that water cured specimens revealed higher compressive strength than steam cured specimens at later ages. An increase in CfFA and GGBFS contents caused a decrease in the compressive strength of mortar. Ternary mixes exhibited better compressive strength than binary mixes containing CfFA with the same replacement ratio of mineral admixtures.
Open Science Index 172, 2021