| 微观表征法研究煤矸石改性水泥砂浆水化机理 |
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| 引用本文： | 徐子芳,张明旭,闵凡飞.微观表征法研究煤矸石改性水泥砂浆水化机理[J].硅酸盐通报,2010,29(1). |
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| 作者姓名： | 徐子芳 张明旭 闵凡飞 |
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| 作者单位： | 安徽理工大学材料科学与工程学院,淮南,232001 |
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| 基金项目： | 安徽省教育厅自然基金资助项目(KJ2008B274) |
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| 摘 要： | 在水泥胶砂中掺入适当配比的煤矸石可以增加水泥砂浆的强度,尤其是早期强度。与不添加煤矸石的基准砂浆相比,煤矸石的掺量为9%时,砂浆3d抗压强度提高1.0MPa,28d抗压强度提高2.0MPa。XRD、TGA-DTA和SEM分析证实:加入煤矸石促进了水泥砂浆7d早期水化反应,生成水化产物钙矾石、C-S-H凝胶、AFm和氢氧化钙,且水化产物的数量亦不同,各产物的晶型结构也不相同,改性后水化产物增多,水化速率加快,因而影响砂浆的宏观力学强度。
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| 关 键 词： | 煤矸石 水泥砂浆 性能分析 微观结构 |
Study on the Hydration Mechanism of Coal Gangue Modified Cement Mortar by Microstructure Characterization |
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| XU Zi-fang,ZHANG Ming-xu,MIN Fan-fei.Study on the Hydration Mechanism of Coal Gangue Modified Cement Mortar by Microstructure Characterization[J].Bulletin of the Chinese Ceramic Society,2010,29(1). |
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| Authors: | XU Zi-fang ZHANG Ming-xu MIN Fan-fei |
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| Affiliation: | School of Material Science and Engineering;Anhui University of Science and Technology;Huainan 232001;China |
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| Abstract: | The addition of suitable amount of coal gangue to cement mortar may increase cement mortar strength. When the content of coal gangue is 9%,the compressive strengths at 3 and 28 d increased 1.0 MPa and 2.0 MPa,respectively. The analysis by XRD,TGA-DTA and SEM showed that the addition of coal gangue prompted the hydration reaction at early stage of 7 days. The hydration products are AFt,C-S-H,AFm and Ca(OH)2. These hydration products and crystal structures are different. After modification,hydration products ... |
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| Keywords: | coal gangue cement mortar performance analysis microstructure |
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