ArticleScientific reports2025
Impact of alkaline activator concentration on mechanical properties and microstructure of a ternary blended one-part geopolymer cement.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Stabilization and solidification of iron ore tailings using alkali-activated geopolymer.Scientific reports · 2026Article
- Optimization of carbonation parameters for recycled fine aggregate utilizing the Taguchi method and absorbent-assisted treatment.Scientific reports · 2026Article
- Performance evaluation of superplasticizers in one part geopolymer mortar.Scientific reports · 2026Article
- Synergistic Effects and Mechanisms of Plant Ash and Activator on Geopolymer Gel Formation, Hydration Evolution and Mechanical Properties.Gels (Basel, Switzerland) · 2026Article
- Performance evaluation and TiGRA-based multi-response optimization of sustainable fly ash-slag-based one-part alkali-activated concrete mix design.Scientific reports · 2026Article
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4 authors.
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Abstract
Geopolymers offer a sustainable alternative to Portland cement (PC), which significantly contributes to global greenhouse gas emissions. One-part geopolymers (GP), which are synthesized by mixing solid precursors and dry activators with water on-site, present a promising alternative to conventional cement. This study investigates the impact of alkaline activator dosage (6-16%) on the mechanical properties and microstructure of a ternary blended one-part geopolymer cement, incorporating diatomite, feldspar, and ground granulated blast-furnace slag (GGBS) as raw materials. The materials were first evaluated for pozzolanic reactivity through strength activity index, lime saturation, and Frattini tests. Results revealed that activator dosage significantly influenced geopolymer performance. While all mixes exhibited minimal workability, the mechanical properties improved up to an optimal activator dosage. The mix with 10% activator and a sodium silicate (SS) to sodium hydroxide (NH) ratio of 1.5 demonstrated the highest compressive strength (46 MPa), split tensile strength (4.69 MPa), and flexural strength (7.448 MPa) after 28 days of curing. Microstructural analysis showed a dense, well-formed structure at the optimum mix, while lower activator dosages led to a less compact structure, and higher dosages caused brittleness and cracking. This study highlights the importance of optimizing activator dosage for enhanced geopolymer performance.
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