本文提出了两种通过跟踪监测水泥浆体超声波速和介电常数研究水泥早期水化过程的新方法.研究结果表明:超声波传播速度和介电常数受到水泥水化过程的影响,可以间接反应固、液、气三相的体积比例与分布.根据超声波速变化规律可以将水泥的水化过程分为5个阶段,分别对应潜伏期、加速期、减速期、终凝期和稳定期.水泥水化程度愈高,生成水化产物数量愈多,超声波速愈大.水泥砂浆的介电常数随水化龄期逐渐减小,并与水泥净浆的超声波传播速率线性相关.
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