Interfacial bond in concrete-to-concrete composites: A review

Daneshvar, Dana; Behnood, Ali; Robisson, Agathe

doi:10.1016/j.conbuildmat.2022.129195

Cited by 57 publications

(17 citation statements)

References 148 publications

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“…Three distinct load-bearing mechanisms constitute the shear strength at the ECC and concrete interface. Before the occurrence of slip at the interface, adhesive forces serve as the primary load-bearing mechanism, wherein the interfacial shear force is provided by mechanical interlocking, van der Waals forces, and chemical forces (Daneshvar et al, 2022). Once slip initiates at the interface, the anchor bar becomes the main load-bearing mechanism.…”

Section: Interfacial Bonding Mechanisms Under Different Interfacial T...mentioning

confidence: 99%

Enhancing the interfacial bond performance of engineered cementitious composites and concrete

Huang,

Hou,

et al. 2024

Advances in Structural Engineering

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This study aims to investigate the influence of different surface treatments, including smooth interface, rough interface, anchor bolt connection, and epoxy bonding agent, on the shear resistance of Engineered Cementitious Composites (ECC)-concrete interface through bi-surface shear testing. The experimental results show that the interfacial shear strength between ECC and concrete is significantly enhanced by the implementation of the three interface treatment methods, as opposed to the smooth interface. Among these methods, the anchor bolt connection exhibits the greatest improvement in interfacial bonding performance. Notably, cohesive failure is observed in the anchor bolt connection method, while the other three methods result in adhesive failure, with only the anchor bolt connection method displaying ductile failure behavior. Following a comprehensive review of relevant studies and the outcomes of this experiment, three distinct interface bonding mechanisms were identified and the forces contributing to the bond were analyzed. Results indicated that the interfacial bond strength is notably influenced by the surface roughness. These research findings substantiate the viability of utilizing the anchor bolt connection method, particularly in applications where ductility requirements in the repair layer are essential for structural integrity.

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Section: Interfacial Bonding Mechanisms Under Different Interfacial T...mentioning

confidence: 99%

Enhancing the interfacial bond performance of engineered cementitious composites and concrete

Huang,

Hou,

et al. 2024

Advances in Structural Engineering

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“…The remaining water may not be sufficient for cement hydration, which can damage the mechanical properties of the repair material and the interface and may result in low bond strength. Therefore, during the construction of damaged pavement repair, the concrete substrate should be kept in a moisture-saturated state, the moisture in the repair material will not be absorbed, and the w/c ratio of the repair material should be kept constant [70][71][72][73][74][75][76].…”

Section: Bonding Performancementioning

confidence: 99%

Optimization of rapid-repair material ratio and performance analysis based on orthogonal test

Jixing,

Zhu,

Junhui

2023

Matéria (Rio J.)

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Through orthogonal experimental design, the influence of the water-binder ratio, binder-sand ratio, ultrafine mineral admixture content, and steel fiber content on the fluidity and basic mechanical properties of rapidrepair materials was studied. The optimal mixing ratio parameters were determined, and its swelling and shrinkage performance and microstructure were analyzed. The results showed that the water-binder ratio and steel fiber content were the most significant factors affecting the properties of rapid-repair materials. The steel fiber content in the rapid-repair material led to pull-out failure and significantly affected flexural strength but had a relatively small effect on compressive strength. With the determined optimal mix proportion, the rapidrepair material had good fluidity and high early strength, bonding strength, and volume stability. At age 3 h, the material's flexural strength and compressive strength were 13.7 MPa and 27.8 MPa, respectively, and the adhesive strength was 3.65 MPa. The limited expansion rate of 56 d-age repair material was 326.5 × 10 −6 , which can better meet the requirements of repairing highway pavement and bridge expansion joints to reopen to traffic within 3 h of repair.

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“…The tensile tests for interface bonding strength are categorized into direct and indirect tensile tests [25,26]. The direct tensile test uses simple equipment and is easy to implement.…”

Section: Direct Tensile Testmentioning

confidence: 99%

Review of the Interfacial Bonding Properties between Ultrahigh-Performance Concrete and Normal Concrete

Yao

et al. 2023

Applied Sciences

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As a high-quality building material exhibiting excellent toughness and durability, ultrahigh-performance concrete (UHPC) is increasingly being used in the construction industry and as building reinforcement. During the reinforcement of existing concrete structures with UHPC, their interface is the weakest part of a structure. Interface bonding ensures the operation of two types of materials together. However, existing studies rarely report the bonding of the UHPC–normal concrete (NC) interface. Herein, the existing test methods and interface bonding mechanisms are summarized. Subsequently, the differences among relevant design codes are investigated by comparing different theoretical formulas. Important influencing factors of the reinforcement method, namely, interface roughness, fiber type and content, interface agent type and content, moisture content, existing concrete strength, cementitious material content, curing conditions, freeze–thaw cycles, and chloride ions, are also considered. Further, the enhancement mechanism of the characteristics of the UHPC–NC interface is clearly described. Finally, the shortcomings and application prospects of the interfacial bonding properties are highlighted.

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Interfacial bond in concrete-to-concrete composites: A review

Cited by 57 publications

References 148 publications

Enhancing the interfacial bond performance of engineered cementitious composites and concrete

Enhancing the interfacial bond performance of engineered cementitious composites and concrete

Optimization of rapid-repair material ratio and performance analysis based on orthogonal test

Review of the Interfacial Bonding Properties between Ultrahigh-Performance Concrete and Normal Concrete

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