Diagnosis of a subway concrete structure affected by alkali-silica reaction

被引：0
|
作者：
Hao, T. Y. [1 ]
Hui, Y. L. [1 ]
机构：
[1] Natl Engn Res Ctr Diag & Rehabil Ind Bldg, Beijing, Peoples R China
来源：
PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CEMENT & CONCRETE AND CANMET/ACI INTERNATIONAL SYMPOSIUM ON CONCRETE TECHNOLOGY FOR SUSTAINABLE DEVELOPMENT, VOLS 1 AND 2 | 2006年
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中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
The evaluation of alkali aggregate reaction in an existing subway tunnel was discussed in this paper. The petrographical examination of concrete thin section was used to distinguish the alkali reactivity of the aggregates. Combined with alkali content analysis, it was deduced that part A of the tunnel had the potential of alkali-silica reaction. Finally, the typical alkali-silica gel was found in a broken surface of a concrete core, which proved that ASR happened in this part of the subway tunnel. Some measures again ASR should be taken in order to continue use the existing subway.
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页码：1071 / 1078
页数：8
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