| 大面积混凝土修补加固材料 |
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| 引用本文： | 皮艳灵,张来恒,章荣会. 大面积混凝土修补加固材料[J]. 混凝土, 2007, 0(7): 47-50 |
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| 作者姓名： | 皮艳灵 张来恒 章荣会 |
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| 作者单位： | 北京联合荣大工程材料有限责任公司,北京,101400;北京联合荣大工程材料有限责任公司,北京,101400;北京科技大学,北京,100083 |
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| 摘 要： | 大面积混凝土覆盖式修补加固技术核心是新浇筑混凝土抗裂性能要好和新老混凝土界面粘结强度要高.就粉煤灰、减缩剂及减水剂对砂浆强度、自收缩及抗裂性能的影响进行研究,结果表明粉煤灰等量替代水泥25%,减缩剂A4的加入及高性能混凝土配合比的合理设计,配制出抗裂性能和粘结性能良好的大面积混凝土修补加固用的混凝土.
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| 关 键 词： | 修补加固混凝土 自收缩 减缩剂 约束 |
| 文章编号： | 1002-3550-（2007）07-0047-04 |
| 修稿时间： | 2007-03-01 |
Researching on the material of the mass-area repaired-streng thened concrete |
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| PI Yan-ling,ZHANG Lai-heng,ZHANG Rong-hui. Researching on the material of the mass-area repaired-streng thened concrete[J]. Concrete, 2007, 0(7): 47-50 |
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| Authors: | PI Yan-ling ZHANG Lai-heng ZHANG Rong-hui |
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| Affiliation: | 1. Beijing Allied Rongda engineering Material Co., Ltd., Beijing 101400, China; 2. Beijing Technology University, Beijing 100083, China |
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| Abstract: | Good crack-resistance and high bond strength are factors of special importance within mass-area reinforce concrete technology.The study researches on influence of fly ash,shrinkage reducing agent and superplastizer on strength,shrinkage and crack-resistance of morter.As a result,replacing 25% cement by fly ash,matching ratio of high performance concrete and admixing with shrinkage reducing agent A4,the high repaired-strengthened performance concrete that have good crack-resistance and high cohesive strength was made up. |
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| Keywords: | repaired-strengthened concrete autogenous shrinkage shrinkage reducing agent restraint |
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