Optimization of production parameters for rice husk ash-based geopolymer cement using response surface methodology
| Autor: | Peter Wilberforce Olupot, Abdulfatah Abdu Yusuf, Kasumba A. Buyondo, John Baptist Kirabira |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Optimization
Materials science Central composite design Materials Science (miscellaneous) RHA 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Husk 0201 civil engineering law.invention law 021105 building & construction lcsh:TA401-492 Response surface methodology Composite material Metakaolin Cement Geopolymers RSM Portland cement Compressive strength lcsh:Materials of engineering and construction. Mechanics of materials Strength Mortar |
| Zdroj: | Case Studies in Construction Materials, Vol 13, Iss, Pp e00461-(2020) |
| ISSN: | 2214-5095 |
| DOI: | 10.1016/j.cscm.2020.e00461 |
| Popis: | The use of agro-waste in geopolymers, to serve as alternative material to Ordinary Portland Cement (OPC) presents a great potential to the sustainability of the construction sector. Accordingly, this study aimed to optimize the production parameters of geopolymer cement using response surface methodology (RSM) with rice husk ask (RHA), metakaolin (MK) and an alkaline activator as reactants. During the experiment, two-factorial design was run using the central composite design (CCD) to generate 13 combinations of cement (reactant) mixtures with standard sand in order to cast mortar prisms whose compressive strength was evaluated according to BS EN standard. Data analysis on the compressive strength was carried out using MATLAB software. Models for compressive strengths with RHA and MK as predictors were generated for samples cured at 7 and 14 days. Result showed that the overall R2 of these models were 0.8951 and 0.63, respectively. The β values for the multiple linear model for the strength at 7 days of curing was |
| Databáze: | OpenAIRE |
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