Inhibition of the Expansion of CFBC Ash

Abstract:

The destructive expansion of CFBC ash is the bottleneck problem for its utilization in building materials. The addition of chemical substances and autoclave curing were used to inhibit the expansion in the paper. The results show that the addition of 1% CaCl₂ or 1% Na₂CO₃ can decrease the 28 d linear expansion ratio of CFBC ash-water mortars by about 19%, with no disadvantage influence on the compressive strength. Moreover, the linear expansion ratio of CFBC ash-clinker-water pastes was below 5×10^-4 after autoclave curing. The work confirms that the expansion of CFBC ash can be inhibited effectively by the way of autoclave curing.

• Periodical: Advanced Materials Research (Volumes 287-290)
• Pages: 758-761
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.287-290.758
• Online since: July 2011
• Authors: Yuan Ming Song, Bo Wang, Hui Zhong Xu, Zhi Juan Wang
• Keywords: CFBC, CFBC Ash, Expansion, Inhibition

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