- Title
- Utilisation of rice husk ash as a partial replacement for cement in self-consolidating concrete
- Creator
- Smith, Cameron; Zhuge, Yan; Chaves, Igor
- Relation
- 28th Biennial National Conference of the Concrete Institute of Australia (Concrete 2017). Concrete 2017: Advances in Concrete Materials and Structures (Adelaide, S.A. 22-25 October, 2017)
- Publisher
- Concrete Institute of Australia
- Resource Type
- conference paper
- Date
- 2017
- Description
- A main constituent of the agricultural waste from rice production was rice husk. On combustion, the cellulose-lignin matrix of rice husk burns away and leaves only a silica skeleton, along with a small amount of carbon and other trance elements. Previous research indicated that Rice Husk Ash (RHA) was a good pozzolanic material and could be used to partially replace Ordinary Portland Cement. In order to determine the optimum quantity of RHA in self-compacting concrete (SCC) mix, a series of laboratory testing was carried out on properties for both fresh and hardened concrete where RHA was used as partial replacement for Portland cement in percentages ranging from 10-30%. Elementary analysis of RHA using X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), and X-ray Flouroescence (XRF) were performed for a better understanding of the properties of RHA. The testing results indicated that a suitable pozzolanic material could be developed through controlled combustion of RHA. However, adding RHA resulted in subsequent decreases in compressive strength. Fly ash was also incorporated into the mix designs. Reasons and implications are discussed within.
- Subject
- rice husk ash (RHA); self-compacting concrete; compressive strength; microstructure analysis
- Identifier
- http://hdl.handle.net/1959.13/1395311
- Identifier
- uon:33845
- Language
- eng
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