Sulfate Resistance of Cement-based Composites using CFBC Ash
碩士 === 國立臺灣海洋大學 === 河海工程學系 === 101 === Circulating Fluidized Bed Combustion (CFBC) Technology is a relatively efficient combustion technology and becomes popular in recent years. The by-product was rapidly increasing. Taiwan's current annual production of CFBC ash is about 800,000 tones. This...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2013
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| Online Access: | http://ndltd.ncl.edu.tw/handle/23874517973992213905 |
| Summary: | 碩士 === 國立臺灣海洋大學 === 河海工程學系 === 101 === Circulating Fluidized Bed Combustion (CFBC) Technology is a relatively efficient combustion technology and becomes popular in recent years. The by-product was rapidly increasing. Taiwan's current annual production of CFBC ash is about 800,000 tones. This study was aimed to investigate the feasibility of CFBC fly ash replacing Portland cement and the sulfate resistance of CFBC-cement specimen.
The results indicate that (1) compressive strength is inversely proportional to the replacement percentage of CFBC fly ash for Portland cement which display CFBC ash not to have the coal fly ash characteristics and no significant pozzolanic reaction; (2) CFBC fly ash is mainly composed of calcium sulfate and oxidation calcium which are different from the compositions of Portland cement; (3) CFBC fly ash partially replacing cement specimens compared with the control group have better ability to resist sulfate attack, and the advantage increases as the amount of CFBC fly ash replacement increases.
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