| 减缩剂改性新老混凝土修补界面层的细观结构与粘结强度 |
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| 引用本文： | 罗白云,熊光晶,李庚英,陈立强. 减缩剂改性新老混凝土修补界面层的细观结构与粘结强度[J]. 硅酸盐通报, 2004, 23(6): 110-112,116 |
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| 作者姓名： | 罗白云 熊光晶 李庚英 陈立强 |
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| 作者单位： | 汕头大学土木系,汕头,515063;汕头大学土木系,汕头,515063;汕头大学土木系,汕头,515063;汕头大学土木系,汕头,515063 |
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| 基金项目： | 国家自然科学基金资助项目(50278050) |
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| 摘 要： | 针对既有界面剂在新老混凝土修补中的缺点，以国产减缩剂对水泥砂浆界面剂进行改性，配制不同界面剂，分别对花岗岩石板和老砂浆界面进行修补，测试粘结强度，并观察细观结构。对比试验表明，减缩剂可有效改善界面层的宏观性能与细观结构，界面粘结强度显著提高。
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| 关 键 词： | 减缩剂 界面剂 界面层细观结构 粘结强度 混凝土 |
Fine Structure and Bond Strength of Shrinkage Reducing Admixture Modified Repair Interfacial Layer between New and Old Concrete |
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| Luo Baiyun Xiong Guangjing Li Gengying Chen Liqiang. Fine Structure and Bond Strength of Shrinkage Reducing Admixture Modified Repair Interfacial Layer between New and Old Concrete[J]. Bulletin of the Chinese Ceramic Society, 2004, 23(6): 110-112,116 |
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| Authors: | Luo Baiyun Xiong Guangjing Li Gengying Chen Liqiang |
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| Abstract: | To counter the shortcomings of primers in common use for new to old concrete repair,a way to modify primer by introducing homemade shrinkage reducing agent (SRA) was proposed. Various primers were made and applied to granite and old mortar surfaces. Both bond strength test and fine structure observation of interfacial layer were performed. Test results showed that SRA effectively improved the both macrostructure and fine structure of interfacial layer,therefore,leading to a significant increase of the bond strength. |
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| Keywords: | shrinkage reducing agent primer interfacial layer fine tincture bond strength concrete 116 |
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