With the clay in Yancheng area, the author has carried out experimental researches on the pozzolanic reactivity of the low temperature burnt clay and its application as cement admixture.
作者用盐城地区的粘土，进行了低温煅烧粘土的火山灰活性和用作水泥混合材的试验研究。
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A regressive equation is then given to predict pozzolanic activity index in accordance with ash parameters and cement composition.