ArticleMaterials (Basel, Switzerland)2022
Effect of Solution-to-Binder Ratio and Alkalinity on Setting and Early-Age Properties of Alkali-Activated Slag-Fly Ash Binders.
Article in Materials (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Optimizing Potassium-Based Activator Formulation for Balanced Reactivity, Flowability, Setting Time and Mechanical Performance of Alkali-Activated Materials.Materials (Basel, Switzerland) · 2026Article
- A Review of Research on the Valorization and Risk Management of Municipal Solid Waste Incineration Bottom Ash.Materials (Basel, Switzerland) · 2026Review
- Mitigation of Volume Changes in Alkali-Activated Slag by Using Metakaolin.Materials (Basel, Switzerland) · 2025Article
- Effect of Curing Temperature on Volume Changes of Alkali-Activated Slag Pastes.Materials (Basel, Switzerland) · 2025Article
- Effect of the Alkali-Sulphate Activators on the Hydration Process of Blast-Furnace Slag Mortars and Pastes.Materials (Basel, Switzerland) · 2025Article
- Study on the Properties of High Fly Ash Content Alkali-Activated Fly Ash Slag Pastes and Fiber-Reinforced Mortar Under Normal Temperature Curing.Materials (Basel, Switzerland) · 2024Article
- Effect of Solution-to-Binder Ratio and Molarity on Volume Changes in Slag Binder Activated by Sodium Hydroxide at Early Age.Materials (Basel, Switzerland) · 2024Article
- Preparation and Hydration Properties of Sodium Silicate-Activated Municipal Solid Waste Incineration Bottom Ash Composite Ground-Granulated Blast Furnace Slag Cementitious Materials.Materials (Basel, Switzerland) · 2024Article
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Authors and funding
4 authors.
Funding
Abstract
The growing use of blends of low- and high-calcium solid precursors in combination with different alkaline activators requires simple, efficient, and accurate experimental means to characterize their behavior, particularly during the liquid-to-solid transition (setting) at early material ages. This research investigates slag-fly ash systems mixed at different solution-to-binder (s/b) ratios with sodium silicate/sodium hydroxide-based activator solutions of varying concentrations. Therefore, continuous non-destructive tests-namely ultrasonic pulse velocity (UPV) measurements and isothermal calorimetry tests-are combined with classical slump flow, Vicat, and uniaxial compressive strength tests. The experimental results highlight that high alkali and silica contents and a low s/b ratio benefit the early-age hydration, lead to a faster setting, and improve the early-age strength. The loss of workability, determined from the time when the slump flow becomes negligible, correlates well with ultrasonic P-wave velocity evolutions. This is, however, not the case for Vicat or calorimetry tests.
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