摘   要：采用三种二元复合掺合料，研究了硅铝含量测定法和电导率法快速评定复合掺合料火山灰活性的可行性。结果表明，活性硅铝百分含量、电导率变化率均与28d活性指数之间存在相关性，能反映复合掺合料的火山灰活性。通过建立活性硅铝百分含量（或电导率变化率）与28d活性指数的拟合方程，可以对复合掺合料的火山灰活性实现快速评定。

Abstruct：Three kinds of binary compound admixtures were used to study on the feasibility of methods which used to rapidly assessing the pozzolanic activity of compound admixtures by the determination of silicon and aluminum content or the electrical conductivity. The results show that the percentage of active SiO2 and Al2O3, or the rate of electrical conductivity change are correlated with the 28d activity index, which can reflect pozzolanic activity of compound admixtures. By establishing the fitting equation between the percentage of active SiO2 and Al2O3 (or the rate of electrical conductivity change) and the 28d active index, the rapid assessment of the pozzolanic activity of compound admixtures can be achieved.