| 混凝土早期徐变对开裂敏感性的影响 |
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| 引用本文： | 张涛,覃维祖.混凝土早期徐变对开裂敏感性的影响[J].工业建筑,2005,35(8):89-92,105. |
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| 作者姓名： | 张涛 覃维祖 |
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| 作者单位： | 清华大学,土木工程系建筑材料研究所,北京,100084;清华大学,土木工程系建筑材料研究所,北京,100084 |
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| 摘 要： | 混凝土的开裂敏感度主要是由早期应力发展决定,早期徐变是影响由自生收缩与温度变形引起的混凝土约束应力发展的重要因素。研究了约束条件下混凝土的早期徐变松弛性质,以及应力松弛对混凝土早期开裂敏感性的影响。
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| 关 键 词： | 徐变/松弛 收缩 约束条件 开裂敏感性 |
| 收稿时间： | 2004-11-16 |
| 修稿时间： | 2004-11-16 |
CREEP OF CONCRETE AT EARLY AGE AND ITS EFFECT ON CRACKING SENSITIVITY |
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| Zhang Tao,QIN Weizu.CREEP OF CONCRETE AT EARLY AGE AND ITS EFFECT ON CRACKING SENSITIVITY[J].Industrial Construction,2005,35(8):89-92,105. |
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| Authors: | Zhang Tao QIN Weizu |
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| Affiliation: | Research Institute of Building Materials of Civil Engineering Department, Tsinghua University Beijing 100084 |
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| Abstract: | The cracking sensitivity of concrete is determined by the stress development at early age, and the creep of young concrete is an important factor influencing the development of restrained stresses in concrete structures due to autogenous contraction and thermal deformation. It is studied that the properties of creep ifi restrained concrete at early age, and the effect of creep/relaxation on cracking sensitivity of concrete. |
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| Keywords: | creep/relaxation shrinkage restrained condition cracking sensitivity |
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