Bond behaviour of reinforcing steel bars in early age concrete

Song, Xiaoqian; Yu, Wu; Gu, Xianglin; Chen, Chao

doi:10.1016/j.conbuildmat.2015.06.060

Cited by 49 publications

(13 citation statements)

References 10 publications

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“…In addition, the data of real structures and precise investigation of real-size concrete members are necessary to fill the gaps between laboratory data and construction site. The impact of bleeding, placing joints (including impact of temperature history of overall member), reinforcement-concrete bond behavior [198,199] including plastic deformation as well as changes in stress field are necessary to evaluate the risk of cracking as well as the crack width.…”

Section: Discussionmentioning

confidence: 99%

Properties of early-age concrete relevant to cracking in massive concrete

Maruyama

Lura

2019

Cement and Concrete Research

150

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Section: Discussionmentioning

confidence: 99%

Properties of early-age concrete relevant to cracking in massive concrete

Maruyama

Lura

2019

Cement and Concrete Research

150

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“…In Wang's research, theoretical and experimental research was performed to evaluate the mechanical performance of new and old concrete beams under sustained loads (Wang et al, 2011). As to find out the influencing factors on the bond slip, the age difference (Song et al, 2015), normal stresses (Al-Fasih et al, 2021) and curing condition (Mirmoghtadaei et al, 2015) were considered. Many studies have also shown that the concrete type has a certain influence on the interfacial bond slip between the Old -New concrete.…”

Section: Introductionmentioning

confidence: 99%

Old - New Concrete Interfacial Bond Slip Monitoring in Anchored Rebar Reinforced Concrete Structure Using PZT Enabled Active Sensing

Jiang

Chen

2021

Front. Mater.

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Post-installed anchor technology is widely used for structural strengthening and for retrofitting existing constructions. The old–new concrete interface associated with using this technology is of great significance in the shear capacity of concrete structural member under shear forces. For such members, interface failures usually occur with bond slip. In this paper, an application of a piezoceramic enabled active sensing technique is put forward to monitor Old - New concrete interfacial bond slip. Three concrete specimens (S1, S2, and S3) are fabricated and each specimen consists of two parts. Each part is made of concrete poured at different times, and both are bonded with an anchored rebar embedded inside the specimen. Two PZT aggregates bonded to opposing sides of the concrete specimen helped to realize active sensing. During the shear loading test, both the load values and the signals from sensors are acquired every 20 s. The test durations of S1, S2 and S3 lasted 960, 1,120, and 1,110 s, respectively. Furthermore, the received signal energies are quantified through wavelet packet analysis to monitor the Old - New concrete interfacial bond slip process. The experimental results show that the change of WPEI in the received signals has a direct relation with the severity of the Old - New concrete interfacial bond slip. Moreover, the PZT-based active sensing approach is feasible to monitor the shear-induced bond slip in Old - New concrete interfaces.

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“…Meanwhile, as a key parameter for structural design, bond strength for HSC with SAP added has not been studied yet. Although there were many studies published on the bond strength of normal reinforced concrete [28][29][30][31][32][33][34][35][36] as well as high-strength concrete [37][38][39][40][41][42], the law of bond strength and the stress-slip relationship between HSC mixed with SAP and reinforcing steel remain unclear.…”

Section: Introductionmentioning

confidence: 99%

Effect of Internal Curing with Superabsorbent Polymers on Bond Behavior of High‐Strength Concrete

Xiao

Wang

Jiang

et al. 2020

Advances in Materials Science and Engineering

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High-strength concrete (HSC) is widely used in engineering due to its high strength and durability. However, because of its low water-to-cement ratio, external curing water hardly enters the dense internal structure of HSC so that high self-desiccation shrinkage often takes place. As a result, superabsorbent polymers (SAP) are added as an internal curing material to effectively reduce the shrinkage of high-performance concrete. Meanwhile, the bond performance between reinforcing steel and SAP HSC concrete remains unknown. In this paper, the bond performance of HSC mixed with SAP is studied by pull-out tests, and the results were obtained as follows: (1) the bond strength of HSC mixed with SAP increased first and then decreased with the increase of SAP content; (2) the slip at ultimate bond strength of HSC with SAP decreased with the increase of compressive strength; (3) a prediction model of the stress-slip relationship between steel rebars and HSC was established.

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Bond behaviour of reinforcing steel bars in early age concrete

Cited by 49 publications

References 10 publications

Properties of early-age concrete relevant to cracking in massive concrete

Properties of early-age concrete relevant to cracking in massive concrete

Old - New Concrete Interfacial Bond Slip Monitoring in Anchored Rebar Reinforced Concrete Structure Using PZT Enabled Active Sensing

Effect of Internal Curing with Superabsorbent Polymers on Bond Behavior of High‐Strength Concrete

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