Title: Performance of One-Part Alkali-Activated Self- Consolidated Mortar

Author(s): Dima M. Kanaan and Ahmed M. Soliman

Publication: Materials Journal

Volume: 119

Issue: 2

Appears on pages(s): 181-195

Keywords: alkali-activated; dry-powder; meta sodium silicate; minislump; one-part; self-consolidated; ternary

DOI: 10.14359/51734201

Date: 3/1/2022

Abstract:
The workability and mechanical performance of one-part alkali-activated self-consolidated mortar (AASCM) differ substantially from ordinary cementitious systems. However, it has scarcely been studied. This study examined the feasibility of producing “just add water” AASCM mixtures prepared by single, binary, and ternary precursor. Different tests, including the flowability and hydration heat, were evaluated to explore potential interactions between various ingredients. The hardened performance was evaluated based on achieved compressive strength at ages 7 and 28. Differential scanning calorimetry was used to evaluate various hydration products’ development over the investigated period. This study’s findings highlighted the high potential to produce green, easy-to-handle, one-part slag-based AASCM with fresh and hardened performance. Results showed that ternary mixtures exhibited higher flowability values than binary and single mixtures, except binary mixtures with fly ash. Furthermore, the modified particle size distribution of binary activated systems resulted in higher strength levels than single mixtures.