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Bond in Concrete

Definition: (1) adhesion of concrete or mortar to reinforcement or other surfaces against which it is placed, including friction and mechanical interlock; (2) adhesion of cement paste to aggregate; (3) adhesion, cohesion, or both between materials; (4) patterns formed by the exposed faces of masonry units, for example, running bond or Flemish bond.- ACI Concrete Terminology


Bond is critical to the interaction of reinforcing material (whether steel, reinforced polymer, or other material) and concrete; exceeding bond stress between the reinforcing bar and the concrete results in some form of cracking, delamination, or pull-out of the bar.

Bond can also refer to adhesive force between cement paste and aggregate, creating a resistance to tensile or shear stresses in the concrete itself.

In instances where concrete is placed against a hardened concrete, the two can become bonded to each other. Often a cement paste is applied to wet the hardened material, improving the chemical interaction at the surface. Bonding agents are also available to assure bond between distinct concrete surfaces.

JOURNAL Articles ON BOND IN CONCRETE

Experimental Study on Drilled Shaft Reinforcing Bar Anchorage in Footings

Publication: Structural Journal
Date: 5/21/2023

Behavior of Concrete Bridge Deck Slabs Reinforced with BFRP and Steel Bars

Publication: Structural Journal
Date: 5/21/2023

Effect of Beam Depth on Anchorage Strength of Hooked and Headed Bars

Publication: Structural Journal
Date: 5/1/2023

Behavior of Unbonded Post-Tensioned Concrete Slabs Exposed to Fire

Publication: Structural Journal
Date: 5/1/2023

Surface-Dependent Interfacial Characteristics of Glass Fiber-Reinforced Polymer Bars in Concrete

Publication: Structural Journal
Date: 5/1/2023

Bond of Plain Bars in Early-Age Concrete under Bilateral Pressures

Publication: Structural Journal
Date: 5/1/2023

Performance of Glass Fiber-Reinforced Polymer-Reinforced Concrete Piles Exposed to Laboratory-Simulated Marine Environments

Publication: Structural Journal
Date: 5/1/2023

Flexural Behavior and Serviceability Performance of Lightweight Self-Consolidating Concrete Beams Reinforced with Basalt Fiber-Reinforced Polymer Bars

Publication: Structural Journal
Date: 5/1/2023

Near-Surface Mounting-Strengthened Reinforced Concrete Beams Incorporating Glass Fiber-Reinforced Polymer Channels

Publication: Structural Journal
Date: 5/1/2023

Crack Spacing-Based Flexural Capacity of Polymer Cement Mortar Overlay Reinforced Concrete Beams at High Environmental Temperature

Publication: Structural Journal
Date: 4/1/2023

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