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《河北轻化工学院学报》 1995-04
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Study on the Relation Between Thermal Stability and Carbonation Rate of Ettringite

Zou Ruizhen; Sun Shuqiao; Chen Xiantuo (Department of Chemical Engineering)  
The thermal stability of ettringite in different carbonation rate is studied by differential thermal analysis (DTA) and thermogravimetric analysis (TGA) in this paper, and finds out that the carbonation rate of ettringite increases from zero to 80%, while the maximum temperature decreases about 20℃ due to heating dehydration, it carbonates to destroy the structure of ettringite and makes the structural water dehydrolyze difficultly changing to free water. Thus, we know that the ability of deep carbonized cement members are weak in heat resistance.
【CateGory Index】: O643
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