| 水泥特性对低碱液体速凝剂的适应性影响 |
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| 引用本文： | 吴华明,张建纲,于诚,陆海梅. 水泥特性对低碱液体速凝剂的适应性影响[J]. 隧道建设, 2016, 36(5): 537-543. DOI: 10.3973/j.issn.1672-741X.2016.05.007 |
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| 作者姓名： | 吴华明 张建纲 于诚 陆海梅 |
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| 作者单位： | （江苏苏博特新材料股份有限公司， 江苏南京 211103） |
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| 摘 要： | 结合水泥的物理和化学特性，探讨其对液体速凝剂的适应性影响，并通过SEM、XRD等手段进行了机理分析。结果表明： 铝酸盐液体速凝剂在C3A含量较低和标准稠度用水量较低的水泥中适应性较差，需要大幅度提高速凝剂掺量才能满足凝结时间要求。经过硅酸盐改性的液体速凝剂表现出更好的适应性，但是在C3S、硫酸盐含量较低的水泥中，砂浆早期强度较低。
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| 关 键 词： | 喷射混凝土 液体速凝剂 水泥适应性 矿物组成 微观分析 |
| 收稿时间： | 2015-12-18 |
| 修稿时间： | 2016-03-09 |
Adaptability of Cement Properties to Low alkali Liquid Setting Accelerator |
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| WU Huaming,ZHANG Jiangang,YU Cheng,LU Haimei. Adaptability of Cement Properties to Low alkali Liquid Setting Accelerator[J]. Tunnel Construction, 2016, 36(5): 537-543. DOI: 10.3973/j.issn.1672-741X.2016.05.007 |
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| Authors: | WU Huaming ZHANG Jiangang YU Cheng LU Haimei |
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| Affiliation: | (Sobute New Materials Co., Ltd., Nanjing 211103, Jiangsu, China) |
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| Abstract: | The adaptability of physical and chemical properties of cement to liquid setting accelerator is studied; and the mechanism of the adaptability is analyzed by means of scanning electron microscopy(SEM) and X ray diffraction(XRD). The study results indicate that: 1) The adaptability of aluminate liquid accelerator is bad to low C3A content cement and low water content cement; and the mixing proportion of aluminate liquid accelerator should be greatly increased so as to meet the requirement of setting time. 2) The liquid setting accelerator conditioned by silicate shows better adaptability, while it will lower the early strength of mortar when it is used in low C3S content sulfate content. |
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| Keywords: | shotcrete liquid setting accelerator cement adaptability mineral composition microscopic analysis |
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