The effect of partial replacement of Nigerian Portland limestone cement with rice husk ash agricultural waste in concrete
| Autor: | M O Osaghale, S. O. Ehikhuenmen, U.T. Igba, Solomon Oyebisi, J. O. Akinyele |
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| Rok vydání: | 2019 |
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| Zdroj: | IOP Conference Series: Materials Science and Engineering. 640:012041 |
| ISSN: | 1757-899X 1757-8981 |
| DOI: | 10.1088/1757-899x/640/1/012041 |
| Popis: | Rice Husk is an agricultural waste which when burnt under controlled temperature, produces an ash Rice Husk Ash (RHA) owing to its rich content in silica, which is used as a super-pozzolanic material for the partial replacement of Cement in concrete. Presently, large amounts of RHA are generated in both Rural and Small-Scale Industries which has a high impact on the environment. In this work, Portland limestone cement (PLC) was partially replaced at 0%, 5%, 10%, 15%, 20%, 25% and 30% with RHA. A control of 0% PLC replacement was adopted. Compressive strength was investigated A mix ratio of 1: 1.12 : 3.07 with water-cement ratio of 0.5 was adopted for a curing period of 7, 14, 28, 60 & 90 days. The result showed that the compressive strength decreased as the percentage of RHA increased. At 90 days, compressive strength of 34.12, 29.70, 28.30, 26.67, 24.48, 23.96 and 23.42N/mm2 was recorded for 0, 5, 10, 15, 20, 25 and 30% replacement level respectively. It was recommended that further work should be investigated to check for the suitability of partial replacement of other grades of Nigerian cement with RHA in concrete. |
| Databáze: | OpenAIRE |
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