吴福飞, 宫经伟, 董双快, 陈昌礼, 赵振华. 不同养护方式对水泥-锂渣浆体水化程度影响[J]. 水利水运工程学报, 2017, (3): 86-92. DOI: 10.16198/j.cnki.1009-640X.2017.03.012
引用本文: 吴福飞, 宫经伟, 董双快, 陈昌礼, 赵振华. 不同养护方式对水泥-锂渣浆体水化程度影响[J]. 水利水运工程学报, 2017, (3): 86-92. DOI: 10.16198/j.cnki.1009-640X.2017.03.012
WU Fufei, GONG Jingwei, DONG Shuangkuai, CHEN Changli, ZHAO Zhenhua. Influences of different curing methods on cement-lithium slag slurry hydration degree[J]. Hydro-Science and Engineering, 2017, (3): 86-92. DOI: 10.16198/j.cnki.1009-640X.2017.03.012
Citation: WU Fufei, GONG Jingwei, DONG Shuangkuai, CHEN Changli, ZHAO Zhenhua. Influences of different curing methods on cement-lithium slag slurry hydration degree[J]. Hydro-Science and Engineering, 2017, (3): 86-92. DOI: 10.16198/j.cnki.1009-640X.2017.03.012

不同养护方式对水泥-锂渣浆体水化程度影响

Influences of different curing methods on cement-lithium slag slurry hydration degree

  • 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 the cement-lithium slag slurry, the chemically combined water is tested by high-temperature calcination at different ages. The testing results show that the chemically combined water of the cement-lithium slag slurry increases with prolongation of the age that can be able to achieve more than 60% and 80% for 90 d at 3 d and 7 d hydration degree, after then this increase becomes slower. The chemically combined water at 1 d is up to 3 to 4 times under the conditions of high temperature curing, alkali activation, high temperature and alkali activation (composite curing), which is better than standard curing. Relatively speaking, the effect of the 4 kinds of curing is in the order of composite curing >alkali activation> high temperature curing>standard curing. The chemically combined water of unit cement at 1~28 d is small by an equivalent chemically combined water method, the relative index (ψ value) of the cement hydration degree at 1~28 d is greater than 1 when the content of the lithium slag is less than 40%, and ψ value is less than 1 when the content of the lithium slag is 60% under high temperature curing and composite curing. In summary, the hydration degree of the cement and lithium slag can be improved by high temperature curing, alkali-activation and composite curing, and it is more significant in the composite curing period.

     

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