| 花岗岩/硅烷偶联剂/水泥浆界面层的形成机理 |
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| 引用本文： | 李屹立,陆小华,冯玉龙,熊光晶. 花岗岩/硅烷偶联剂/水泥浆界面层的形成机理[J]. 材料研究学报, 2007, 21(2): 140-144 |
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| 作者姓名： | 李屹立 陆小华 冯玉龙 熊光晶 |
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| 作者单位： | 汕头大学土木工程系,汕头,515063;汕头大学土木工程系,汕头,515063;汕头大学土木工程系,汕头,515063;汕头大学土木工程系,汕头,515063 |
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| 摘 要： | 用硅烷偶联剂(SCA)处理粗骨料,用分光光度法、接触角测定仪、傅里叶变换红外光谱(FTIR)和X射线光电子能谱(XPS)分析SCA与花岗岩表面的结合形式及其影响因素.结果表明,在常温下SCA与花岗岩表面可形成较强结合,包括化学键合.对花岗岩/SCA/水泥浆界面层的扫描电镜观测结果表明,水解SCA的羟基和间断分布的有机基团是界面结合增强的主要原因.
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| 关 键 词： | 无机非金属材料 混凝土 硅烷偶联剂 花岗岩/SCA/水泥浆界面层 粘结机理 |
| 文章编号： | 1005-3093(2007)02-0140-05 |
| 修稿时间： | 2006-06-19 |
Forming mechanism of granite/silane coupling agent/cement paste interface |
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| LI Yili,LU Xiaohua,FENG Yulong,XIONG Guangjing. Forming mechanism of granite/silane coupling agent/cement paste interface[J]. Chinese Journal of Materials Research, 2007, 21(2): 140-144 |
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| Authors: | LI Yili LU Xiaohua FENG Yulong XIONG Guangjing |
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| Affiliation: | Department of Civil Engineering, Shantou University, Shantou 515063 |
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| Abstract: | The mechanisms that the bond strength between aggregates and cement paste could be significantly increased by modifying the aggregate surfaces with silane coupling agent (SCA) were analysed. The formation and the influencing factors of granite/SCA interface were investigated using spectrophotometry, contact angle measurement, FTIR and XPS. The results revealed that strong bonds, including chemical bonds, formed on the modified granite surfaces. The interface transition zone (ITZ) benefits from the existence of the uncondensed silanetriols and the distributed organofunctional network. |
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| Keywords: | inorganic non-metallic materials concrete silane coupling agent granite/SCA/cement paste interracial layer bond mechanism |
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