【摘 要】
：
The quantitative determination of reaction degrees of cement and mineral admixture in composite binder is important to understand its hydration mechanism an
【机 构】
：
Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of
【出 处】
：
The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
The quantitative determination of reaction degrees of cement and mineral admixture in composite binder is important to understand its hydration mechanism and microstructure development.The reaction degrees of cement, slag or fly ash in composite binder hydrating at 20℃, 45℃ and 60℃ are independently determined by SEM-BSE imaging.The non-evaporable water content of pastes was determined by ignition loss.Results show that temperature has little effect on the final reaction degree of Portland cement.The reaction degree of cement in binders containing slag increases with increasing slag content in the range of testing temperature, but it is lower in binders containing fly ash than Portland cement at elevated temperature.Increasing temperature decreases the reaction degree of cement in composite binder, but increases the reaction degrees of slag and fly ash.The reaction degree of composite binder decreases with the increase of replacing ratio of mineral admixture.A linear relationship between the non-evaporable water content and the reaction degree of composite binder is established.
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