Hydration Process and Mechanism of Fly Ash in the Cement Mortars
Hydration Process and Mechanism of Fly Ash in the Cement Mortars
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DOI：
10.4028/www.scientific.net/msf.675-677.551
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发表时间：
2011-02
期刊：
影响因子：
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通讯作者：
Zhongtao Luo;B. Ma;J. Yang;X. Li
中科院分区：
文献类型：
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作者：
Zhongtao Luo;B. Ma;J. Yang;X. Li
在20±2°C的饱和石灰水和20±2°C的水泥砂浆中的粉煤灰环境中，研究了粉煤灰的水化机理。结果表明：在本试验条件下，粉煤灰的反应速度在90天内基本呈递减趋势，其化学活性是一个累积变化过程。粉煤灰在两种环境中的水化过程相似，只是龄期效应不一致。Ka值和反应度的测试方法可以有效地分析粉煤灰的化学活性。通过Ka值可以快速评价粉煤灰的早期活性，通过反应程度可以判断粉煤灰的后期活性。
In the environments of saturated limewater at 20±2°C and fly ash in cement mortars at 20±2°C, the hydration mechanism of fly ash is studied. The results indicate: under this test condition, the reaction speed of fly ash presents the degressive tendency basically within 90 days, and its chemical activation is an accumulation change process. The hydrated course of fly ash in the two environments is resembled, and only the age effectiveness is inconsistent. The test methods of Ka value and reaction degree can be used to analyze chemical activation of fly ash effectively. Rapid evaluation can be used on early activation of fly ash by Ka value and the later period one can be estimated by reaction degree.