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为了模拟水泥粒径分布对水泥水化过程的影响,本文建立了一个基于水化深度的水化模型。该模型假定水泥水化过程由水化深度控制,且水化深度随时间的变化关系与颗粒粒径无关。通过等温差示扫描量热仪测定了2种不同粒径分布水泥的等温水化热曲线,根据试验结果分析得出最大水化深度的存在,并推导得出水化模型所需的基准水化速率。最后将建立的水化模型用于模拟水泥的等温水化热曲线。结果表明:基于水化深度的水化模型能够准确模拟水泥粒径分布对水泥水化过程的影响。
In order to simulate the effect of cement particle size distribution on cement hydration process, a hydration model based on hydration depth was established in this paper. The model assumes that the cement hydration process is controlled by the depth of hydration, and that the depth of hydration over time is independent of particle size. The isothermal hydration heat curves of two kinds of cement with different particle sizes were measured by isothermal differential scanning calorimetry. According to the test results, the maximum hydration depth was obtained, and the reference hydration rate . Finally, the established hydration model is used to simulate the isothermal hydration curve of cement. The results show that hydration model based on depth of hydration can accurately simulate the influence of cement particle size distribution on cement hydration process.