Abstract
Based on the comprehensive utilization situation of fly ash in some countries, the contents and characteristics of the existing fly ash comprehensive utilization standard systems of these countries were discussed and compared, so as to provide guidance and suggestions for improving the standard system and the comprehensive utilization of fly ash in China. The average comprehensive utilization rate of fly ash in China is 70%, which is mainly used in building materials, but is relatively low in road, backfill and other scopes. Compared with developed countries, the scope and limit value of indexes involved in the standards of fly ash in China are loose, and the fields involved are mostly traditional building materials and infrastructure construction. The comprehensive utilization of fly ash of China can be improved from the following points: the indexes investigated in standards should reflect and conform to the particularity of China; the comprehensive utilization standard of fly ash should be more suitable for the local region; the power plants should actively explore and improve their own comprehensive utilization.
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