混凝土早期徐变对开裂敏感性的影响

张涛; 覃维祖

doi:10.13204/j.gyjz200508022

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混凝土早期徐变对开裂敏感性的影响

doi: 10.13204/j.gyjz200508022

张涛,
覃维祖

1.
清华大学?土木工程系建筑材料研究所?北京?100084

详细信息

作者简介:
张涛,男,1978年6月出生,博士研究生

中图分类号: TU375
计量
- 文章访问数: 83
- HTML全文浏览量: 3
- PDF下载量: 127
- 被引次数: 0
出版历程
- 收稿日期: 2004-11-16
- 刊出日期: 2005-08-20

CREEP OF CONCRETE AT EARLY AGE AND ITS EFFECT ON CRACKING SENSITIVITY

1.
Research Institute of Building Materials of Civil Engineering Department,Tsinghua University Beijing 100084

摘要

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。
- 徐变松弛 /
- 收缩 /
- 约束条件 /
- 开裂敏感性
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 in restrained concrete at early age,and the effect of creep/relaxation on cracking sensitivity of concrete.
- creep/relaxation /
- shrinkage /
- restrained condition /
- cracking sensitivity

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参考文献(4)

林志海,覃维祖,等.虚拟仪器技术在检测混凝土早期开裂敏感度试验中的应用.工业建筑,2003,33(7):37～40;

[2] Bentur Amon.Early Ages Shrinkage and Cracking in Cementitious System.In:International RILEM Workshop on Shrinkage of Concrete Shrinkage 2000.Paris:2000.1～20;

[3] Attiogbe Emmanuel K.Tensile Creep in Restrained Shrinkage.In:Proceedings of the 6th International Conference Creep,Shrinkage and Durability Mechanics of Concrete and Other Quasi-Brittle Material.USA:2001.651～656;

[4] Kovler K.Tensile Creep Behavior of High Strength Concretes at Early Ages.Materials and Structures,1999(32):383～387

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