| 混凝土单位碱含量与碱－集料反应 |
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| 引用本文： | 郭宏定 钱春香. 混凝土单位碱含量与碱－集料反应[J]. 工业建筑, 1995, 25(1): 40-42,50 |
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| 作者姓名： | 郭宏定 钱春香 |
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| 摘 要： | 对北京芦沟桥－砂石场的粗集料研究表明，当单位碱含量达６０ｋｇ／ｍ３时，混凝土抗压强度降低１０～２０ＭＰａ；碱含量为９０ｋｇ／ｍ３时，抗压强度降低２５ＭＰａ左右。微分析表明，在上述混凝土试件中，部分粗集料内部和边界存在碱－集料反应特征。
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| 关 键 词： | 活性集料，碱含量，抗压强度，碱－集料反应 |
UNIT ALKALI CONTENT AND ALKALI-AGGREGATE REACTION OF CONCRETE |
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| Abstract: | Study on the coarse aggregate from LugouqiaoBeijing shows that the compressive strength of concrete containing above coarse aggregate was decreased 10 MPa to 20 MPa when unit alkali content was 6.0kg/m3,And the strength was decreased 25 MPa when unit alkali content was 9.0kg/m3.Micro-analysis illustrates there existed the characteristics of alkali-aggregate reaction inside parts of aggregates and in the edge of the aggregates of above concrete speciments. |
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| Keywords: | reactive aggregate alkali content commpressive strength alkal-aggregate reaction |
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