Effect of rice husk ash on properties of slag based geopolymer pastes

Zhao, Yixin; Chen, Bing; Duan, H. L.

doi:10.1016/j.jobe.2023.107035

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…Furthermore, using rice husk in geopolymer synthesis offers significant environmental advantages by reducing dependence on non-renewable resources and promoting the reuse of agricultural waste. A considerable number of publications report on the requirement to improve rice husk-based geopolymers to achieve desirable mechanical strengths, highlighting the importance and relevance of this research field [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Concrete Durability and Strength with Fly Ash, Steel Slag, and Rice Husk Ash for Marine Environments

Barragán-Ramírez,

González-Hernández,

Bautista-Ruiz

et al. 2024

Materials

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The effect of an alternative source of silica, based on class F fly ash mixed with blast furnace slag and activated by rice husk ash (RHA), to produce concrete exposed to marine environments was evaluated. Four mixtures activated by the combination of 85% NaOH 14M + 15% RHA were manufactured to achieve a liquid/solid ratio of 0.20. Fly ash was incorporated into the steel slag mixture at addition percentages of 20, 40, 60, and 80%, and evaluated at 28, 900, and 1800 days for pore and chloride ion absorption. In general, including rice husk ash in the mixture of fly ash and steel slag significantly affected mechanical performance because it was possible to obtain concrete with high mechanical resistance. Concerning the durability evaluation, the effect of the activator generated by rice husk ash was observed, and the increase in steel slag added to the cementitious samples improved the capacity of the material to resist the penetration and diffusion of chloride ions.

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Section: Introductionmentioning

confidence: 99%