Investigation of The Bond Behaviour Between PBO-FRCM Strengthening Material and Concrete

Tran, Chanh Thai Minh; Stitmannaithum, Boonchai; Ueda, Tamon

doi:10.3151/jact.12.545

Cited by 23 publications

(11 citation statements)

References 23 publications

(33 reference statements)

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“…Recently, Ombres (2015) conducted a few single shear tests on the interface of FRCM and concrete, and found the shear strength to be approximately 0.20 -0.75 MPa. Comparing the experimental average shear strengths from this study and those collected from the literature, Tran et al 2014, Ombres 2015, Carloni et al 2015 shows that the proposed C-FRCM composite provides the greatest bonding strength.To summarize, by assessing the flexural and compressive strengths, conductivity and shear strength of different polymer-modified inorganic cementitious matrices, the authors were able to conclude that the WC-1 ingredient had the better performance. The proposed cementitious material is electric conductive, while the mechanical properties satisfied the criteria set out in AC434 (2016) for cementitious material.…”

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confidence: 67%

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Combined Impressed Current Cathodic Protection and FRCM Strengthening for Corrosion-Prone Concrete Structures

Wei

Zhu

et al. 2019

J. Compos. Constr.

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：This study introduces the use of the combined impressed current cathodic protectionstructural strengthening (ICCP-SS) as a technique for repairing reinforced concrete (RC) structures that have been subjected to chloride-induced corrosion. The development of this technique is based on the combination of a carbon fiber mesh (CF-MESH) and a polymer-modified cementitious matrix to produce a carbon fiber reinforced cementitious matrix (C-FRCM). Firstly, the effects of different types and amounts of high molecular weight polymer and short chopped carbon fibers on the flexural and compressive strength, conductivity and shear strength of a matrix with concrete substrate were investigated in order to find the optimum ingredients required for a high-performance cementitious matrix. Secondly, a shaped CF-MESH was bonded onto the surface of a concrete cube using the aforementioned optimized cementitious matrix. The impressed current cathodic protection (ICCP) technique was then applied to the specimens by using different current densities with the CF-MESH as the anode. During the Mei-ni SU 1 , Liangliang WEI 2 , Ji-Hua ZHU 3* , Tamon UEDA 4 , Guan-ping GUO 5 , Feng XING, "Combined Impressed Current Cathodic Protection and FRCM Strengthening for Corrosion-Prone Concrete Structures", Journal of composites for construction, ASCE, 23(4):04019021. protection period, the protection conditions of rebars subjected to ICCP were assessed by analyzing a variety of electrochemical parameters. Thirdly, single shear tests were conducted; the shear strengths and failure modes of the specimens were obtained and compared in order to evaluate the effects of the ICCP on shear stress transfer. The results show that the proposed technique based on the newly proposed C-FRCM composite is able to provide effective cathodic protection as well as shear stress transfer behavior to RC structures subjected to chloride-induced corrosion, leading to an improvement with respect to structural durability.

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confidence: 67%

“…;Ueda and Dai 2005;Tran et al 2014;Kabir et al 2016) using a 100 mm × 100 mm × 100 mm concrete cube with a 28-day strength of 49.8 MPa. Please note that the compressive strength is the average value based on five test results with the coefficient of variation of 0.016.…”

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confidence: 99%

Combined Impressed Current Cathodic Protection and FRCM Strengthening for Corrosion-Prone Concrete Structures

Wei

Zhu

et al. 2019

J. Compos. Constr.

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“…The bonded length was a parameter investigated in most studies (D'Ambrisi et al 2012;D'Antino et al 2013D'Antino et al , 2014Sneed et al 2014;Tran et al 2014;Awani et al 2015;D'Antino et al 2015;Ombres 2015a;Sneed et al 2015;D'Antino et al 2016a;Raoof et al 2016;Sabau et al 2017). It was concluded that ultimate load and bond capacity increase nonlinearly with the bonded length.…”

Section: Bond Aspects Of Trmmentioning

confidence: 99%

Strengthening of Concrete Structures with Textile Reinforced Mortars: State-of-the-Art Review

et al. 2019

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Textile reinforced mortars (TRM), also known in the international literature as textile reinforced concrete (TRC) or fabric reinforced cementitious matrix (FRCM) materials, have been widely studied during the last two decades as they constitute a promising alternative to the fiber reinforced polymer (FRP) retrofitting solution for strengthening of reinforced concrete members. This paper presents a state-of-the-art review on the strengthening of concrete structures with TRM. First, the tensile and bond behavior of TRM is described. Next, an overview of studies on the use of TRM for flexural, shear, confinement, and seismic retrofitting of concrete or RC members is included, and the key parameters are investigated.

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“…And thus, the concrete/UHTCC interface becomes a weak transition face from concrete to UHTCC. In contrast, FRCM (fiber reinforced cementitious mortar) strengthening system showed several types of interface crack propagation modes due to different debonding mechanisms, including the interface debonding within the cementitious matrix, at the fiber mesh and cementitious matrix interface, at the concrete/matrix interface, and in the supporting concrete (Ortlepp et al 2006;D'Ambrisi et al 2012;Tran et al 2014).…”

Section: Interface Debonding Behaviormentioning

confidence: 99%

Flexural and Interface Behaviors of Reinforced Concrete/Ultra-high Toughness Cementitious Composite (RC/UHTCC) Beams

Hou

Hong

et al. 2015

ACT

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This paper presents an experimental investigation on the response of reinforced concrete (RC) beams with the use of ultra-high toughness cementitious composite (UHTCC) in the tension zone. Two parameters, the longitudinal reinforcement ratio and the depth of UHTCC layer, were varied. The failure mechanism, flexural behavior, interface performance, and cracking pattern were compared between RC and RC/UHTCC beams as well as between RC/UHTCC beams with different depths of the UHTCC layer. The experimental results revealed that the yielding load was improved apparently for beams with a reinforcement ratio of 0.67%, and the macro wide cracks in concrete turned into multiple tight cracks in the UHTCC layer depending on the prominent crack dispersion capacity of the UHTCC. However, RC/UHTCC beams with 1.0% and 1.73% reinforcement ratios showed shear-interface debonding failure prior to the yielding of reinforcement, and the failure resulted from the accumulated interface crack extension up to the support and the crush of concrete. Moreover, the theoretical analysis indicates that the interface cracking strength and ultimate interface bonding strength are related with the reinforcement ratio and UHTCC depth. The tensile stress difference of reinforcement in the UHTCC layer plays a controlling role in the interface debonding between concrete and UHTCC. The present study provides significant insights for the engineering application of hot-casting RC/UHTCC composite beam.

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Investigation of The Bond Behaviour Between PBO-FRCM Strengthening Material and Concrete

Cited by 23 publications

References 23 publications

Combined Impressed Current Cathodic Protection and FRCM Strengthening for Corrosion-Prone Concrete Structures

Combined Impressed Current Cathodic Protection and FRCM Strengthening for Corrosion-Prone Concrete Structures

Strengthening of Concrete Structures with Textile Reinforced Mortars: State-of-the-Art Review

Flexural and Interface Behaviors of Reinforced Concrete/Ultra-high Toughness Cementitious Composite (RC/UHTCC) Beams

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