Role of Slag Replacement on Strength Enhancement of One-Part High-Calcium Fly Ash Geopolymer

• DOI: 10.28991/cej-sp2024-010-013
• Publication Date: 2024-12-16T13:39:06Z
• Authors: Darrakorn Intarabut; Piti Sukontasukkul; Tanakorn Phoo-nge...; Sakonwan Hanjitsuwan; Vanchai Sata; Poopatai Chumpol; Worathep Sae-Long; Hexin Zhang; Prinya Chindaprasirt

This paper reports the effect of slag (SL) replacement and water-to-binder (w/b) ratio on properties one-part geopolymer derived from high-calcium fly ash (FA) sodium silicate powder (NP). The FA was replaced by SL at rates 20% 40%, respectively. study focused conducting experimental tests to evaluate relative slump, setting time, compressive strength, flexural strength FA-based geopolymer. relationship between strengths mortar expressed using simplified linear regression model, whereas normalization with without as divisor also evaluated. Experimental results showed that increase w/b significantly affected workability development mortar. Higher exhibited a positive their strengths; however, reduction in its time obtained. enhancement primarily due increased calcium content SL. Similarly, reducing production resulted decrease an development. Based strengths, prediction coefficient value (R2) obtained curve fitting procedure 0.835, indicating good level reliability acceptability for engineering applications. Doi: 10.28991/CEJ-SP2024-010-013 Full Text: PDF