ArticleScientific reports2024
The influence of selected grain size fractions of coal fly ash on properties of clay-cement mortars used for the flood levees construction.
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Formation of the Structure and Properties of Building Ceramics Based on Coal Ash and Metallurgical Slags: A Review of Modern Research.Materials (Basel, Switzerland) · 2026Review
- The Effect of Different Particle Sizes of Fly Ash on the Properties of Mortar.Materials (Basel, Switzerland) · 2025Article
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Authors and funding
5 authors.
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Abstract
This study examines the influence of different grain size fractions of coal fly ash on the properties of clay-cement mortars used in flood levee construction. Dry aerodynamic separation and mesh sieving were used to obtain ultrafine, fine, and medium fractions of high-calcium and silica fly ash. The experimental results reveal that the rheological properties of fresh mortars are significantly influenced by these fractions. High-calcium fly ash mortars exhibit high reactivity and rapid increase in viscosity, with finer fractions showing the highest reactivity. Silica ashes show increased reactivity in the later stages of suspension hardening. Their spherical shape contributes to reducing internal friction during flow in initial technological operations. Furthermore, the compressive strength of hardened mortars improves as the particle size decreases for both ashes, resulting in a dense and uniform microstructure. The separation and fractionation of fly ashes contribute to the obtaining of fractions that influence the parameters of clay-cement suspension application on different scales. The results show the potential benefits of ash separation, which can bring advantages in terms of economic viability, engineering performance, and ecological sustainability.
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