Replacement of raw mix in cement production by municipal solid waste incineration ash

Pai Haung Shih, Juu En Chang, Li Choung Chiang

研究成果: Article同行評審

69 引文 斯高帕斯(Scopus)

摘要

The feasibility of municipal solid waste incineration (MSWI) ash utilized as the replacement of raw mix in cement production is investigated. Result shows that sieving, self-grinding, and magnet separation processes are necessary to remove the debris, salt, and metallic contents that existed in the MSWI ash. By using the pretreated MSWI ashes, the produced cement specimens were in compliance with the unconfined compression strength (UCS) standard in Taiwan at small replacement percentage (<5%). When ash replacement percentage is large (more than 10%), the strength development of specimens would be hindered due to the deficient formation of the calcium silicate. Calculation on lime saturation factor (LSF) also shows a descending trend in consequence of the increase in replacement percentage. Thus, compositional effect should be taken into consideration for promoting the calcium silicate formation at the case of large ash replacement. In this research, adjustment of chemical composition was achieved by adding 183 g calcium oxide per kilogram of cement raw mixture with 15% ash replacement. After adjustment, the produced cement could develop seven- and fivefold increase on UCS compared with those without calcium oxide supplement at 3 and 7 days of curing, respectively. Results concluded that the MSWI ash was suitable in reuse for cement production under a well-conditioned situation.

原文English
頁(從 - 到)1831-1836
頁數6
期刊Cement and Concrete Research
33
發行號11
DOIs
出版狀態Published - 2003 11月

All Science Journal Classification (ASJC) codes

  • 建築與營造
  • 材料科學(全部)

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