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矿渣作为混合材加入水泥熟料共同粉磨成矿渣水泥、是节能的有效措施之一。本文主要应用微热量导热量热计测定矿渣水泥的早期水化热,以及用宾洲大学材料研究实验室自制的化学收缩测定仪测定了矿渣水泥的水化化学收缩。从测定结果发现矿渣水泥水化时间比较早,其加速期紧接普通水泥组份的加速期后出现,如温度提高至60℃则两者的加速期出现时间很相近。实验结果表明矿渣水泥水化热比普通水泥的高,可以用 Kundsen 和阿累尼乌斯公式计算它们的活化能,得到矿渣水泥和普通水泥的活化能分别为49.1千焦/摩尔和44.31千焦/摩尔。作者认为这反映了矿渣中的玻璃相的水化作用有更大的动力学能障。化学收缩的测定结果与水化热所得现象和规律相似,但反映矿渣加速期的化学收缩量小于普通水泥。
The addition of slag as a mixed material to cement clinker to grind into slag cement is one of the effective measures for energy conservation. This paper mainly uses the microcalorimetry thermal calorimeter to measure the early hydration heat of the slag cement, and the chemical shrinkage of the slag cement is determined by using the chemical shrinkage tester made by the Materials Research Laboratory of Binzhou University. From the measurement results, it was found that the hydration time of slag cement was relatively early, and its acceleration period appeared immediately after the acceleration period of common cement components. If the temperature increased to 60°C, the acceleration period of the two was similar. The experimental results show that the heat of hydration of slag cement is higher than that of ordinary cement, and their activation energy can be calculated using the Kundsen and Arrhenius formulas. The activation energy of slag cement and ordinary cement is 49.1 kJ/mol and 44.31 kJ, respectively. / Moore. The authors believe that this reflects a greater kinetic energy barrier for the hydration of the glass phase in the slag. The results of chemical shrinkage measurement are similar to those obtained by heat of hydration, but reflect the chemical shrinkage of slag during the acceleration period is less than that of ordinary cement.