| 高性能混凝土早期自收缩机理及诊治原理 |
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| 引用本文： | 尹利军,倪哲,李长秀. 高性能混凝土早期自收缩机理及诊治原理[J]. 交通科技与经济, 2005, 17(5): 7-8 |
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| 作者姓名： | 尹利军 倪哲 李长秀 |
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| 作者单位： | 1. 河北工业大学土木工程学院,天津,300130
2. 天津五市政公路工程有限公司,天津,300132 |
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| 摘 要： | 分析了高性能混凝土的早期自收缩特点,论述了其早期自收缩机理,针对高性能混凝土自收缩集中在早期、对后期裂缝影响较大的特点,提出掺用粉煤灰,利用其早期水化速度慢来改善高强混凝土硬化速度,从而降低混凝土早期自收缩程度,提高耐久度。
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| 关 键 词： | 高强混凝土 自收缩 机理 粉煤灰 |
| 文章编号： | 1008-5696-(2005)05-0007-02 |
| 修稿时间： | 2004-09-15 |
Experimental study on autogenous shrinkage of high-strength concrete |
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| YIN Li-jun,NI Zhe,LI Chang-xiu. Experimental study on autogenous shrinkage of high-strength concrete[J]. Technology & Economy in Areas of Communications, 2005, 17(5): 7-8 |
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| Authors: | YIN Li-jun NI Zhe LI Chang-xiu |
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| Affiliation: | YIN Li-jun1,NI Zhe2,LI Chang-xiu1 |
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| Abstract: | Analysis is made on the characteristics and mechanism of autogenous shrinkage of concrete, especially at early ages. Fly ash is blended to reduce the large autogenous shrinkage of high-strength concrete, and to improve the hardening speed of water. Consequently the shrinkage degree will be reduced at early age with increase of durability. |
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| Keywords: | high-strength concrete autogenous shrinkage mechanism fly ash |
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