| 三峡工程混凝土预防碱集料反应的综合技术 |
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| 引用本文： | 史迅.三峡工程混凝土预防碱集料反应的综合技术[J].施工技术,2002,31(4):35-37. |
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| 作者姓名： | 史迅 |
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| 作者单位： | 中国长江三峡工程开发总公司试验中心,湖北,宜昌,443133 |
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| 摘 要： | 三峡主体工程混凝土采用非活性集料 ,高掺优质粉煤灰 ,制定了严于国家标准的混凝土碱含量最高限值标准 ,通过复掺高效减水剂和引气剂等技术 ,降低了混凝土单位用水量、减少了水泥用量。同时 ,严格限制混凝土原材料碱含量 ,降低了混凝土总碱量 ,起到了综合预防碱集料反应 (AAR)的作用。
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| 关 键 词： | 三峡工程 混凝土 碱集料反应(AAR) 碱活性 碱含量 |
| 文章编号： | 1002-8498(2002)04-0035-02 |
| 修稿时间： | 2001年4月23日 |
Comprehensive Technology of Preventive Alkaline Aggregate Reaction in Concrete Construction of Sanxia Project |
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| SHI Xun.Comprehensive Technology of Preventive Alkaline Aggregate Reaction in Concrete Construction of Sanxia Project[J].Construction Technology,2002,31(4):35-37. |
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| Authors: | SHI Xun |
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| Abstract: | In the concrete construction of Sanxia Project,engineers use many methods to comprehensively prevent Alkaline Aggregate Reaction (AAR).They include adopting inactive aggregate and high quality flyash,establishing a alkaline content limit standard which is more strict than the national standard,and adding high\|performance water\|reducing agents and air\|addition agents.These methods also have decreasing quantity of water and cement in unit concrete,restricting alkaline content in raw material of concrete to reduce total alkaline content in concrete. |
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| Keywords: | Sanxia project concrete alkaline aggregate reaction (AAR) alkaline activity alkaline content |
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