| 不同养护方式对水泥-锂渣浆体水化程度影响 |
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| 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,2017,0(3):86-92. |
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| 作者姓名： | 吴福飞 宫经伟 董双快 陈昌礼 赵振华 |
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| 作者单位： | 1.贵州师范大学材料与建筑工程学院, 贵州贵阳 550025 |
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| 基金项目： | 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） |
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| 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。
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| 关 键 词： | 养护方式 水泥 锂渣 水化程度 |
| 收稿时间： | 2016-05-26 |
Influences of different curing methods on cement-lithium slag slurry hydration degree |
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| WU Fufei,GONG Jingwei,DONG Shuangkuai,CHEN Changli and ZHAO Zhenhua.Influences of different curing methods on cement-lithium slag slurry hydration degree[J].Hydro-Science and Engineering,2017,0(3):86-92. |
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| Authors: | WU Fufei GONG Jingwei DONG Shuangkuai CHEN Changli and ZHAO Zhenhua |
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| Affiliation: | 1.School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China2.College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China |
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| 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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| Keywords: | curing method cement lithium slag hydration degree |
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