| 外加剂对混凝土收缩抗裂性能的影响 |
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| 引用本文： | 尤启俊,何孟浩. 外加剂对混凝土收缩抗裂性能的影响[J]. 混凝土, 2004, 0(9): 32-33 |
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| 作者姓名： | 尤启俊 何孟浩 |
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| 作者单位： | 1. 江苏省江都市宏海化工有限公司,江苏,江都,225200
2. 广东省湛江外加剂厂,广东,湛江,524000 |
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| 摘 要： | 减水剂用于比表面积较大的水泥。由于水泥水化热较高，减水剂又促进了水泥加速水化，使混凝土易产生收缩开裂，缓凝剂过量加入使混凝土长期处于塑性状态，也会增大混凝土塑性收缩。引气剂能有效防止混凝土收缩开裂，但应用不当更能加大混凝土收缩开裂的危险。减缩防裂剂能有效控制混凝土收缩开裂。
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| 关 键 词： | 减水剂 水化 缓凝剂 引气剂 减缩剂 |
| 文章编号： | 1002-3550(2004)09-0032-02 |
Admixture affecting the concrete shrinkage and crack resistance |
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| YOU Qi-jun,HE Meng-hao. Admixture affecting the concrete shrinkage and crack resistance[J]. Concrete, 2004, 0(9): 32-33 |
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| Authors: | YOU Qi-jun HE Meng-hao |
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| Affiliation: | YOU Qi-jun~1,HE Meng-hao~2 |
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| Abstract: | Plasticizer is generally used in cement with large specific surface,and the cement hydration temperature is high,so the plasticizer also can improve hydration speed that fastens the shrinkage cracking.But extra retarding agent will enlarge concrete plastic shrinkage.Appropriate amount of air-entraining agent can realize preventing the shrinkage cracking effectively.Shrinkage reducing cracking-resistant agent can control the concrete shrinkage cracking effectively.. |
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| Keywords: | plasticizer hydration retarding agent air-entraining agent shrinkage reducing agent |
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