Spent FCC catalyst as a pozzolanic material for high-performance mortars

Hsiu Liang Chen, Yun Sheng Tseng, Kung Chung Hsu*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

64 引文 斯高帕斯(Scopus)

摘要

Spent fluid catalytic cracking (FCC) catalysts, by-products from oil-cracking refineries, were evaluated as pozzolanic admixtures of concrete. In this study, the activity of two spent FCC catalysts, i.e., Ecat and Epcat, were examined and compared. The pozzolanic activity was indicated by their activity index in presence of Portland cement and the consumption of calcium hydroxide determined by DSC measurements. The effect of these two catalysts on the compressive strength of mortars was also investigated. The results were compared to those of silica fume. It was found that both Ecat and Epcat, like silica fume, show good pozzolanic activity and are reactive with CH. Furthermore, Epcat possesses much smaller particle size than the other waste catalyst. Therefore, Epcat provides a filling effect on the microstructure and enhances the compressive strength of the resulting mortars. The performance of Epcat is close to or slightly better than that of silica fume. Compared to the control mortar (W/B=0.42) cured at between 3 and 28 days, mixes with 5-15% cement replacement by Epcat increased the compressive strength by 10-36%.

原文英語
頁(從 - 到)657-664
頁數8
期刊Cement and Concrete Composites
26
發行號6
DOIs
出版狀態已發佈 - 2004 八月 1

ASJC Scopus subject areas

  • 建築與營造
  • 材料科學(全部)

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