Effectiveness of rice (Oryza sativa) hull ash (RHA) as partial replacement of cement in concrete exposed in coastal conditions

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creativework.keywordsRice hull ash, Concrete, Compressive strength, Workability, Permeability
dc.contributor.authorBadua, Dean Aldrene O.
dc.contributor.authorEspiritu, Raffy M.
dc.contributor.authorGaudia, Nicole A.
dc.contributor.authorMazano, Ryan Christian A.
dc.contributor.authorSantiago, Karen Joyce B.
dc.date.accessioned2026-08-10T06:39:12Z
dc.date.available2026-08-10T06:39:12Z
dc.date.issued2024-04-30
dc.descriptionFull text
dc.description.abstractCement use and production are among the largest contributors to greenhouse gases. Thus, we endeavor to utilize agricultural wastes to reduce the consumption of cement while improving the properties of the concrete. This study aimed to determine the effect of rice hull ash (RHA), as partial cement replacement, on concrete's workability, permeability, and compressive strength. Also, it aimed to compare the changes in compressive strength before and after exposure to coastal conditions and perform a cost analysis of concrete mixtures. This experiment used three different RHA loadings (5%, 10%, 15%) as partial replacement to cement. This study concludes that replacing cement with RHA resulted in low workability and lower chloride penetration. Also, replacing cement of up to 10% RHA has comparable compressive strength with pure concrete before exposure to coastal conditions. Replacing up to 15% of RHA has comparable compressive strength with pure concrete after exposure to coastal conditions. Using RHA replacement has a lower production cost than pure concrete.
dc.identifier.citationBadua, D. A. O., Espiritu, R. M., Gaudia, N. A., Mazano, R. C. A., & Santiago, K. J. B. (2024). Effectiveness of rice (Oryza sativa) hull ash (RHA) as partial replacement of cement in concrete exposed in coastal conditions. PaperASIA, 40(2B), 105–112. https://doi.org/10.59953/paperasia.v40i2b.78
dc.identifier.doiDOI:10.59953/paperasia.v40i2b.78
dc.identifier.issn02184540
dc.identifier.urihttps://lakasa.dmmmsu.edu.ph/handle/123456789/2308
dc.language.isoen
dc.publisherPaperASIA
dc.relation.urihttps://www.semanticscholar.org/paper/Effectiveness-of-Rice-(Oryza-sativa)-Hull-Ash-(RHA)-Badua-Espiritu/405a064a20aeb310d75299364a2d5ab7d09e8ad0
dc.sdgSDG 9
dc.sdgSDG 11
dc.sdgSDG 12
dc.subjectRice hull ash
dc.subjectConcrete
dc.subjectCement replacement
dc.subjectCompressive strength
dc.subjectConcrete durability
dc.subjectCoastal conditions
dc.subject.ddcConcrete construction
dc.subject.ddcCement and cement manufacture
dc.subject.ddcConstruction materials
dc.subject.ddcConcrete--Durability
dc.subject.ddcWaste utilization
dc.subject.lcshRice hull ash
dc.subject.lcshConcrete--Durability
dc.subject.lcshCement--Substitutes
dc.subject.lcshPozzolans
dc.subject.lcshCoastal engineering
dc.titleEffectiveness of rice (Oryza sativa) hull ash (RHA) as partial replacement of cement in concrete exposed in coastal conditions
dc.typeArticle
oaire.citation.endPage112
oaire.citation.issue2b
oaire.citation.startPage105
oaire.citation.volume40
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