不同温度下矿渣-水泥复合胶凝体系水化反应特性研究

发布时间：2018-02-15 21:39

本文关键词： 水化温度复合胶凝体系水化放热非蒸发水含量力学性能水化动力学　出处：《硅酸盐通报》2016年10期 　论文类型：期刊论文

【摘要】：研究了不同水化温度对矿渣-水泥复合胶凝体系水化反应特性的影响。研究表明:随着水化温度的降低,复合胶凝体系的水化放热速率、非蒸发水含量、强度均呈现出降低的趋势,负温条件下复合胶凝体系的水化反应特性与常温一致;通过计算获取各个阶段的反应速率曲线,可较好地对由量热实验数据绘制的复合胶凝体系实际水化速率dα/dt曲线进行分段的模拟;将不同温度下复合胶凝体系水化放热量的数据转换为水化反应程度α,对既有模型进行验证。结果表明,现有模型可较准确的预测低温下复合胶凝体系的水化反应程度。
[Abstract]:The effects of different hydration temperatures on the hydration reaction characteristics of slag cement composite cementitious system were studied. The results showed that with the decrease of hydration temperature, the hydration heat release rate and non-evaporative water content of the composite cementing system were decreased. The hydration reaction characteristics of the composite gelling system under negative temperature are consistent with those of normal temperature, and the reaction rate curves of each stage are obtained by calculation. The actual hydration rate d 伪 / DT curve drawn from the calorimetric experimental data can be well simulated. The hydration heat release data of composite cementing system at different temperatures were converted into hydration reaction degree 伪, and the existing models were verified. The results show that the existing models can accurately predict the hydration reaction degree of composite cementing system at low temperature.
【作者单位】：西京学院土木工程学院;中建西部建设北方有限公司;沈阳建筑大学材料学院;
【基金】：西京学院2015院基金(XJ150116)
【分类号】：TU52

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