Evaluation of the Efficiency of Alkali-Activated Material Consisting of Rice Husk Ash by Physical and Mechanical Characteristics DOI Creative Commons

Seunghyun Na,

Wenyan Zhang

Construction Materials, Journal Year: 2025, Volume and Issue: 5(2), P. 21 - 21

Published: April 1, 2025

Reducing the large amounts of carbon dioxide emitted during cement processing is crucial to control adverse effects greenhouse gases. This study provides a promising alternative technology reduce such emissions and investigate physical mechanical characteristics alkali-activated materials with rice husk ash (RHA). To this end, compressive strength, drying shrinkage, water penetration resistance mortar made RHA, blast furnace slag (BFS), alkaline activator (sodium carbonate, NC) are investigated. Two RHA particle sizes 45 150 µm types used, thereby varying replacement ratio 0, 7.5, 15.0 wt.%. Based on adiabatic hydration temperature, Archimedes porosity, pH, ignition loss, scanning electron microscopy, energy-dispersive X-ray spectroscopy diffraction results paste, effect examined. Experimental investigation reveals that strengths sample 15 wt.% BFS were recorded between 48 51 MPa. When was length change 1147 × 10−6 moisture depth less than 11 mm. Notably, significantly improves increasing content; however, at high ratios, particle-size not prominent. Furthermore, decreases porosity but increases loss produces C-S-H gel.

Language: Английский

Evaluation of the Efficiency of Alkali-Activated Material Consisting of Rice Husk Ash by Physical and Mechanical Characteristics DOI Creative Commons

Seunghyun Na,

Wenyan Zhang

Construction Materials, Journal Year: 2025, Volume and Issue: 5(2), P. 21 - 21

Published: April 1, 2025

Reducing the large amounts of carbon dioxide emitted during cement processing is crucial to control adverse effects greenhouse gases. This study provides a promising alternative technology reduce such emissions and investigate physical mechanical characteristics alkali-activated materials with rice husk ash (RHA). To this end, compressive strength, drying shrinkage, water penetration resistance mortar made RHA, blast furnace slag (BFS), alkaline activator (sodium carbonate, NC) are investigated. Two RHA particle sizes 45 150 µm types used, thereby varying replacement ratio 0, 7.5, 15.0 wt.%. Based on adiabatic hydration temperature, Archimedes porosity, pH, ignition loss, scanning electron microscopy, energy-dispersive X-ray spectroscopy diffraction results paste, effect examined. Experimental investigation reveals that strengths sample 15 wt.% BFS were recorded between 48 51 MPa. When was length change 1147 × 10−6 moisture depth less than 11 mm. Notably, significantly improves increasing content; however, at high ratios, particle-size not prominent. Furthermore, decreases porosity but increases loss produces C-S-H gel.

Language: Английский

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