[1]周 鹏,李 扬,游 凡. 低温下混凝土线膨胀系数理论与试验研究[J].湖北工业大学学报,2022,(1):77-80.
　ZHOU Peng,LI Yang,YOU Yang. Theoretical and Experimental Study on Linear Expansion Coefficient of Concrete at Low Temperature[J].,2022,(1):77-80.
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 低温下混凝土线膨胀系数理论与试验研究()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2022年第1期
页码:
77-80
栏目:
湖北工业大学学报
出版日期:
2022-02-28

文章信息/Info

Title:
 Theoretical and Experimental Study on Linear Expansion Coefficient of Concrete at Low Temperature
文章编号:
1003-4684(2022)01-0077-04
作者:
 周 鹏; 李 扬;  游 凡
 湖北工业大学土木建筑与环境学院， 湖北 武汉 430068
Author(s):
 ZHOU Peng;  LI Yang;  YOU Yang
 School of Civil Engin.,Architecture and Environment,Hubei Univ. of Tech., Wuhan 430068,China
关键词:
混凝土;  线膨胀系数;  电阻应变计;  理论推导
Keywords:
 ; concrete;  coefficient of linear expansion;  resistance strain gauge;  theoretical derivation
分类号:
TU502
文献标志码:
A
摘要:
 自制混凝土、水泥砂浆及石灰石试块，针对混凝土线膨胀系数，采用Mori Tanaka方法和电阻应变计法进行理论推导和试验研究。通过对比实测的混凝土线膨胀系数值与理论推导值发现：低温下混凝土线膨胀系数介于水泥砂浆与石灰石之间，混凝土中粗骨料和含水量对这一现象产生显著影响；理论值曲线与试验值曲线趋势大致相同，其系数值随温度的降低逐渐减小；在-80℃ 以内，混凝土线膨胀系数理论值与试验值相差较小，吻合度较高。
Abstract:
 According to the linear expansion coefficient of concrete, Mori Tanaka method and resistance strain gauge method were used to carry out theoretical derivation and experimental study on self-made concrete, cement mortar and limestone test blocks. It is found that the linear expansion coefficient of concrete is between cement mortar and limestone at low temperature by comparing the measured linear expansion coefficient of concrete with the theoretical value. Coarse aggregate and water content in concrete have significant influence on this phenomenon; The trend of the theoretical value curve is roughly the same as that of the experimental value curve, and the coefficient value decreases with the decline of temperature; Within -80℃, there is little difference between the theoretical and experimental values of linear expansion coefficient, and the coincidence degree is high.

参考文献/References:

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相似文献/References:

[1]邓维超１,李厚民１,吴克洋１,等.基于近场动力学的含细观结构混凝土受压数值模拟[J].湖北工业大学学报,2024,39(1):86.
　DENG Weichao,LI Houming,WU Keyang,et al.Peri Dynamics Simulation of Concrete Under Compression Based on MesoScale Model[J].,2024,39(1):86.

备注/Memo

备注/Memo:
［收稿日期］ 2021-01-07
［基金项目］ 国家自然科学基金(51508171); 湖北省自然科学基金(2020CFB860)
［第一作者］ 周   鹏（1997-）， 男， 湖北荆州人，湖北工业大学硕士研究生，研究方向为超低温下材料性能
更新日期/Last Update: 2022-02-25