不同养护方式对水泥-锂渣浆体水化程度影响

发布时间：2018-03-31 12:25

本文选题：养护方式　切入点：水泥　出处：《水利水运工程学报》2017年03期

【摘要】：为了分析水泥-锂渣浆体的水化程度,采用高温煅烧法测试各龄期的化学结合水,结果发现:水泥-锂渣浆体的化学结合水量随龄期的延长而增加,水化3 d和7 d时能达到水化90 d时的60%和80%。高温养护、碱激发、高温和碱激发均能提高锂渣复合水泥基材料早期的化学结合水量,最高可达3~4倍,提高的幅度依次为碱激发和高温养护碱激发高温养护标准养护。高温和复合环境养护也能提高水泥的水化程度,1~28 d内,锂渣掺量在40%以内时,水泥水化程度相对指数(ψ值)均大于1;掺量为60%时,ψ值均小于1。综上,高温养护、碱激发、高温和碱激发均能提高锂渣和水泥的水化程度,高温和碱激发复合作用时较为显著。
[Abstract]:In order to analyze the hydration degree of cement lithium slag slurry, the chemical binding water of each age was tested by high temperature calcination method. The results showed that the chemical binding water of cement lithium slag slurry increased with the increase of age. After hydration for 3 days and 7 days, 60% and 80% of that of 90 days of hydration can be achieved. High temperature curing, alkali excitation, high temperature and alkali excitation can all increase the amount of early chemically bound water of lithium-slag composite cement based materials, with a maximum of 34 times. The order of improvement is alkali excitation and high temperature curing alkali excitation and high temperature curing standard curing. High temperature and compound environment curing can also improve the hydration degree of cement within 28 days, when the content of lithium slag is less than 40%, The relative index of cement hydration degree (蠄 value) is greater than 1, and when the content of cement is 60, 蠄 value is less than 1.In summary, high temperature curing, alkali excitation, high temperature and alkali excitation can improve the hydration degree of lithium slag and cement.
【作者单位】：贵州师范大学材料与建筑工程学院;新疆农业大学水利与土木工程学院;
【基金】：国家自然科学基金资助项目(51541909) 贵州师范大学2016年博士科研启动项目(2016)
【分类号】：TQ172.1

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