Impact of Freeze-Thaw Degradation on FRP-Concrete Interface Fracture

Frost damage of concrete has significant effects on the safety and durability of concrete structures in cold regions, and the concrete structures after repair and reinforcement are still threatened by cyclic freezing and thawing. In this study, the new-to-old concrete interface was reinforced by steel bar. The shear strength of the new-to-old concrete interface was tested after the new-to-old combination was subjected to cyclic freeze–thaw. The effects of the diameter of the steel bar, the compressive strength of new concrete, the number of freeze–thaw cycles and the freezing temperatures on the shear properties of new-to-old concrete interface were studied. The results showed that, in a certain range, the shear strength of the interface was proportional to the diameter of the steel bar and the strength of the new concrete. Meanwhile, the shear strength of the reinforced interface decreased with the decreasing of the freezing temperature and the increasing of the number of freeze–thaw cycles.

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Investigation on meso-debonding process of the sandstone–concrete interface induced by freeze–thaw cycles using NMR technology

Construction and Building Materials ◽

10.1016/j.conbuildmat.2020.118962 ◽

2020 ◽

Vol 252 ◽

pp. 118962 ◽

Cited By ~ 8

Author(s):

Yanjun Shen ◽

Yongzhi Wang ◽

Xin Wei ◽

Hailiang Jia ◽

Ruixin Yan

Keyword(s):

Freeze Thaw ◽

Debonding Process ◽

Concrete Interface

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Debonding behaviors and micro-mechanism of the interface transition zone in sandstone-concrete interface in response to freeze-thaw conditions

Cold Regions Science and Technology ◽

10.1016/j.coldregions.2021.103359 ◽

2021 ◽

pp. 103359

Author(s):

Jia Pan ◽

Yanjun Shen ◽

Gengshe Yang ◽

Huan Zhang ◽

Hongwei Yang ◽

...

Keyword(s):

Transition Zone ◽

Freeze Thaw ◽

Interface Transition Zone ◽

Concrete Interface

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Investigation on interface fracture properties and nonlinear fracture model between ECC and concrete subjected to salt freeze-thaw cycles

Construction and Building Materials ◽

10.1016/j.conbuildmat.2020.119785 ◽

2020 ◽

Vol 259 ◽

pp. 119785 ◽

Cited By ~ 1

Author(s):

Xiaowei Wu ◽

Jun Tian ◽

Hongwei Ma ◽

Yu Zheng ◽

Shaowei Hu ◽

...

Keyword(s):

Fracture Model ◽

Interface Fracture ◽

Fracture Properties ◽

Freeze Thaw ◽

Nonlinear Fracture

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Modeling of Steel-Concrete Interface Fracture under Wedge Splitting Based on a Heterogeneous Assumption

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.44-47.3109 ◽

2010 ◽

Vol 44-47 ◽

pp. 3109-3113

Author(s):

Xu Chang ◽

He Ping Chen ◽

Bin Liu

Keyword(s):

Tensile Strength ◽

Elastic Modulus ◽

Numerical Investigation ◽

Adhesive Layer ◽

Fracture Pattern ◽

Interface Fracture ◽

Concrete Cracking ◽

Fracture Behaviors ◽

Concrete Interface ◽

Wedge Splitting

This paper presents a numerical investigation of fracture behaviors of concrete-steel interface under wedge splitting. The consideration of heterogeneity for the materials is achieved by assigning the elements random strength and elastic modulus by assuming a Weibull’s distribution. The fracture pattern transits from the predominated adhesive layer fracture to the dominated concrete cracking as the interface cohesive strength changes from lower than concrete tensile strength to higher than that. Local cracks can also occur duo the heterogeneous assumption. The numerical results and have an agreement with the experimental results.

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Freeze-thaw cycling impact on the shear behavior of frozen soil-concrete interface

Cold Regions Science and Technology ◽

10.1016/j.coldregions.2020.103024 ◽

2020 ◽

Vol 173 ◽

pp. 103024 ◽

Cited By ~ 2

Author(s):

Pengfei He ◽

Yanhu Mu ◽

Zhaohui Yang ◽

Wei Ma ◽

Jianhua Dong ◽

...

Keyword(s):

Shear Behavior ◽

Frozen Soil ◽

Freeze Thaw ◽

Concrete Interface

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Investigation of damage behaviors of ECC-to-concrete interface and damage prediction model under salt freeze-thaw cycles

Construction and Building Materials ◽

10.1016/j.conbuildmat.2019.07.237 ◽

2019 ◽

Vol 226 ◽

pp. 238-249 ◽

Cited By ~ 5

Author(s):

Jun Tian ◽

Xiaowei Wu ◽

Yu Zheng ◽

Shaowei Hu ◽

Wei Ren ◽

...

Keyword(s):

Prediction Model ◽

Damage Prediction ◽

Freeze Thaw ◽

Concrete Interface

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Computational Study on Mechanical Behavior of Steel-Concrete Composite by using Interface Elements

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.345-346.909 ◽

2007 ◽

Vol 345-346 ◽

pp. 909-912

Author(s):

Dae Seock Shin ◽

Heung Shik Lee ◽

Chong Du Cho

Keyword(s):

Composite Structure ◽

Bonding Strength ◽

Computational Study ◽

Critical Role ◽

Sensitivity Analyses ◽

Interface Fracture ◽

Interface Element ◽

Plastic Behavior ◽

Interface Properties ◽

Concrete Interface

Although steel-concrete interface has significant influence on bonding strength and shear strength, the composite structure with the consideration of the interface fracture has been rarely conducted. In this study, sensitivity analyses are performed to find out steel-concrete interface characteristics by using interface finite elements, defined as elastic-plastic behavior. In order to verify computational accuracy, the analyzed interface properties are compared with experimental results. Generally, interface in steel-concrete composite structure plays a critical role of controlling bonding strength as well as transferring loads between steel and concrete. The composite interface should be avoided to reach to an interface fracture condition; otherwise composite structure may deviate from intended behavior even under low stress state. It is then led to catastrophic fracture or collapse of the structure. This study shows that interface properties of steel-concrete can be analyzed by using the interface element, and the results provide more reliable prediction for the steel-concrete composite behavior.

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