Bond-Slip Behavior Between Reinforcement Bars and High-Strength Lightweight Aggregate Concrete

被引：0
|
作者：
Zhang Y. [1 ]
Liu B.-Q. [1 ]
Wu T. [1 ]
Chen X. [1 ]
机构：
[1] School of Civil Engineering, Chang'an University, Xi'an
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2022年 / 43卷 / 02期
关键词：
Bond strength; Bond-slip constitutive model; Lightweight aggregate concrete; Pull-out test; Thick-wall cylinder model;
D O I：
10.12068/j.issn.1005-3026.2022.02.017
中图分类号：
学科分类号：
摘要：
Nine groups of pull-out tests on the bond-slip behavior between reinforcement bars and lightweight aggregate concrete were completed.The effect of lightweight aggregate concrete strength, anchorage length, coarse aggregate type and bar diameter on bond strength was analyzed. Combined with the test results, the analytical solution of bond strength of lightweight aggregate concrete was given by using thick wall model, and a constitutive model between reinforcement and lightweight aggregate concrete was established.Test results indicate that the bond-slip behavior of the lightweight aggregate concrete is mainly affected by the mortar strength, making the bond stress between the concrete and reinforcement bars better than that between normal weight concrete and reinforcement bars. The bond strength increases with the increase of strength of lightweight aggregate concrete and with the decrease of anchorage length. The proposed bond stress-slip constitutive model shows good precision to predict test curves. © 2022, Editorial Department of Journal of Northeastern University. All right reserved.
引用
收藏
页码：274 / 282
页数：8
相关论文
共 25 条
  • [1] Baldwin J W., Bond of reinforcement in lightweight aggregate concrete, (1965)
  • [2] Hossain K M A., Bond characteristics of plain and deformed bars in lightweight pumice concrete[J], Construction and Building Materials, 22, 7, pp. 1491-1499, (2008)
  • [3] Building code requirements for structural concrete and commentary:ACI 318-19, (2019)
  • [4] Chen Xu, Experimental study on mechanical properties and bond behavior of fiber-reinforced high strength lightweight aggregate concrete, (2017)
  • [5] Martin H., Bond performance of ribbed bars-influence of concrete composition and consistency[C], Proceedings of the International Conference on Bond in Concrete, pp. 289-299, (1982)
  • [6] Chen H J, Huang C H, Kao Z Y., Experimental investigation on steel-concrete bond in lightweight and normal weight concrete[J], Structural Engineering and Mechanics, 17, 2, pp. 141-152, (2004)
  • [7] Li Yu-jun, Ye Lie-ping, Cheng Zhi-jun, Et al., Bond strength between high-strength lightweight aggregate concrete and deformed bar, Building Science, 22, 4, pp. 51-55, (2006)
  • [8] Lo T Y, Cui H Z., Effect of porous lightweight aggregate on strength of concrete[J], Materials Letters, 58, 6, pp. 916-919, (2004)
  • [9] Lu Chun-yang, Wang Wei-yu, Li Pi-ning, Experiment research on bond behavior between deformed bar and lightweight concrete, Journal of Guangxi University(Natural Science Edition), 32, 1, pp. 6-9, (2007)
  • [10] CEB-FIP, Structural concrete-textbook on behavior, design and performance, updated knowledge of the CEB-FIP model code 1990, (1999)
123