Open AccessEFFECT OF VOLCANIC ASH AS PARTIAL REPLACEMENT OF CEMENT IN CONCRETE SUBJECT TO AGGRESSIVE CHEMICAL ENVIRONEMNT
Author(s) -
Agboola Shamsudeen Abdulazeez,
Amina Omolola Suleiman,
Simdima Gabriel Gideon,
Solomon Wutong Poki
Publication year - 2021
Publication title -
international journal of engineering applied science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-2143
DOI - 10.33564/ijeast.2021.v06i05.012
Subject(s) - pozzolan , compressive strength , cement , cementitious , slump , volcanic ash , ultimate tensile strength , pozzolanic activity , materials science , properties of concrete , aggregate (composite) , geotechnical engineering , metallurgy , composite material , volcano , geology , geochemistry , portland cement
- Presently researches all over theworld is concentrating on alternative materials aspartial cement replacement in concrete production.The use of pozzolanic material in concrete isbecoming increasingly important because of theneed for more sustainable cementing products.Volcanic ash is a form of natural pozzolan and hasa chemical composition comparable to othersupplementary cementitious materials. In thispaper, volcanic ash was used to partially replacecement in the ratio of 0%, 5%, 10%, 15% and 20%by volume in concrete and cured in H2SO4 andMgSO4 environment. 28-day target strength wasadopted and concrete tested at 7, 14, 28 and 56days’ hydration period. Specific gravity, bulkdensity and setting time test on volcanic ash werecarried out. Fresh concrete tests such as slump andcompacting factor test were carried out along-sidehardened concrete tests like compressive strengthand split tensile strength. The result shows that themaximum compressive strength at 28 days was at0% control concrete, while at 56 days themaximum strength was observed at 10%replacement of cement with volcanic ash and it isconsidered as optimum percentage replacement.