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.

Practice oriented papers and articles ON BOND IN CONCRETE

High Strain Rate Properties of CFRP Sheets Surface Bonded to Concrete

Publication: Special Publication
Date: 3/1/2021

Performance of TRM/TRC systems under elevated temperatures and fire conditions

Publication: Special Publication
Date: 2/1/2021

Numerical modeling of FRCM composites for the seismic retrofitting of existing concrete structures

Publication: Special Publication
Date: 2/1/2021

Flexural Behavior of Carbon Fiber Textile-Reinforced Concrete I-Section Beams

Publication: Special Publication
Date: 2/1/2021

An Overview of The Tensile and Bond Behavior of Fabric Reinforced Cementitious Matrix (FRCM) Composites

Publication: Special Publication
Date: 2/1/2021

Flexural strengthening of RC slabs with CRC and the influence of the positional accuracy

Publication: Special Publication
Date: 2/1/2021

Influence of the test set-up on the bond behavior of FRCM composites

Publication: Special Publication
Date: 2/1/2021

Investigation on End-Anchorage of SRG Composites Externally Bonded to a Concrete Substrate

Publication: Special Publication
Date: 2/1/2021

On the tensile behavior of high-strength strain-hardening cement-based composites (SHCC) reinforced with carbon textile – influence of yarn-SHCC bon

Publication: Special Publication
Date: 2/1/2021

Effect of Bonded Length on Material Characterization of FRCM Composites

Publication: Special Publication
Date: 2/1/2021

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