The effect of triethanolamine combined with sodium sulfate on the compressive strength,the setting time and structure of fly ash-cement system were investigated.The results show that the compressive strength of fly ash-cement in the early and later stage can be improved in different extent but the setting time of fly ash-cement is shortened by adding proper content of sodium sulfate combined with triethanolamine to the cement.The content of C-S-H gel and ettringite crystal in the hydration product of fly as...
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