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隧道建设(中英文) ›› 2010, Vol. 30 ›› Issue (3): 251-256.

• 研究与探索 • 上一篇    下一篇

结构混凝土早龄期约束受拉徐变的试验方法设计

高森1,  柳献1,2 ,  袁勇1,2, 侯景鹏3   

  1. 1. 同济大学地下建筑与工程系, 上海200092; 2. 同济大学岩土及地下工程
    教育部重点实验室, 上海200092; 3. 东北电力学院建筑工程系, 吉林 吉林132012
  • 收稿日期:2009-12-31 修回日期:2010-01-29 出版日期:2010-06-10 发布日期:2010-06-17
  • 作者简介:高森(1984—),男,辽宁开原人,同济大学隧道及地下建筑工程专业在读研究生,主要从事混凝土性能及测试技术的研究工作。

Design of Test Methods for Restrained Tensile
Creep of Structural Concrete at Early Age

 GAO  Sen1, LIU  Xian1,2, YUAN  Yong1,2, HOU  Jing-Feng3   

  1. 1. Civil Engineering Department of Tongji University, Shanghai 200092, China; 2. Key Laboratory of
    Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;
    3. Civil Engineering Department of Northeast Institute of Electric Power Engineering, Jilin 132012, Jilin, China
  • Received:2009-12-31 Revised:2010-01-29 Online:2010-06-10 Published:2010-06-17

摘要:

比较分析现今混凝土早龄期拉伸徐变的测试方法,自行设计一套可用于测试混凝土早龄期拉伸徐变的框架系统,实现对混凝土早龄期拉伸徐变的定量评价。以水灰比为0.58的普通混凝土为研究对象,验证该试验方法的可靠性。试验结果表明:该试验系统可有效测试出混凝土早龄期拉伸徐变的大小,符合试验设计原理与目的。

关键词: 混凝土, 早龄期, 主动约束, 试验框架, 拉伸徐变

Abstract:

The current test methods for the tensile creep of concrete at early age are studied. A test frame system is developed to examine the tensile creep of concrete at early age, which fulfills the quantitative evaluation on the tensile creep of concrete at early age. A series of tests are made on ordinary concrete with 0.58 W/C ratio to verify the reliability of the test method. The test results demonstrate that the tensile creep of concrete at early age can be effectively obtained by the mentioned test method and that the principle and purpose of the test design can be satisfied.

Key words: concrete, early age, active restraint, test frame, tensile creep