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通过试验,研究持续负温下矿粉掺量对水泥水化和水泥石抗渗性的影响,分析水泥石抗渗性和水泥水化之间的关系,探究不同矿粉掺量对水泥水化和水泥石抗渗性的作用机理。试验结果表明:温度越低,水泥水化程度越低;随着矿粉掺量的增加,水泥水化程度都有一定程度降低,且水化前期减小量较小,水化后期减小量较大;掺入一定比例矿粉,随着龄期的增长,水泥水化速率整体呈降低趋势,而当矿粉掺入比例不同时,随着掺量的增加,不同龄期内水泥水化速率的变化规律不同。通过试验得出,28 d龄期水泥石6 h电通量随着矿粉掺入比例的增加而增增加。
Through the experiment, the effect of slag content on cement hydration and impermeability of cements under continuous negative temperature was studied. The relationship between cement impermeability and cement hydration was analyzed, and the effects of different mineral powder contents on cement hydration And cement impermeable mechanism of action. The results show that the lower the temperature is, the lower the degree of hydration of cement. With the increase of slag content, the degree of hydration of cement decreases to a certain extent, With the increase of age, the hydration rate of cement tends to decrease. When the proportion of slag is different, with the increase of dosage, the hydration rate of cement at different ages The rate of change is different. According to the experiment, the flux of 6-h cement stone at 28 days increased with the increase of slag mixing ratio.