中文摘要：

用量热仪、联合热分析仪、扫描电镜分析了稻壳灰（20％及40％质量分数）对铝酸盐水泥水化进程（水化放热、水化程度等）的影响机制。结果表明：稻壳灰掺量为20％时，所得浆体28d龄期内（1、3、14、28d）的抗压强度均高于其他样品；稻壳灰自身虽基本无水化活性，但40％质量分数以内替代铝酸盐水泥，均在不同程度上加速了1d内的水化放热，且可以显著提高铝酸盐水泥的水化程度，20％的掺量便使铝酸盐水泥3d龄期的水化程度提高了约20％。

英文摘要：

The influence of rice husk ash （RHA, 20% and 40%, mass fraction） on the early hydration （hydration heat, hydration degree） of calcium aluminate cement was investigated by calorimetry, differential thermal-thermogravimetry and scanning electron microscopy, respectively. The results indicate that compared to other samples, the substitution of 20% RHA contributes to the maximum compressive strength within 28 d （1, 3, 14, 28 d）. The addition of RHA accelerates the hydration evolution of calcium aluminate cement within 1 d, and improves the hydration degree of cement clinker. The substitution of 20% RHA results in an improvement of around 20% in hydration degree of calcium aluminate cement after 3 d.