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RESULTS FOR 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

Guidance Emerges for FRP Retrofits of Concrete Diaphragms

Publication: Concrete International
Date: 5/1/2024

Seismic Strengthening of RC Beam-Column Joints with FRP Systems Applicable from the Exterior of the Building

Publication: Special Publication
Date: 3/1/2024

Deflection Behavior of Beams Prestressed with Bonded FRP Tendons

Publication: Special Publication
Date: 3/1/2024

Flexural Behavior of Concrete Beams Prestressed with Hybrid Tendons

Publication: Special Publication
Date: 3/1/2024

PBO FRCM Composite System Exposed to Elevated Temperatures: Experimental and Theoretical Investigations

Publication: Special Publication
Date: 3/1/2024

Assessment of Crack Spacing and Crack Width Formulations in RC Elements Externally Strengthened with FRP Materials

Publication: Special Publication
Date: 3/1/2024

Quasi-Static and Fatigue Behavior of GFRP Bars Embedded in Concrete: A Comparison Between Pull-Out Tests and Flexural Tests of Slabs

Publication: Special Publication
Date: 3/1/2024

Fatigue Behavior of CFRP Sheets Attached to Concrete Surface by Using EBROG Strengthening Method

Publication: Special Publication
Date: 3/1/2024

Effect of Weathering Exposure Time on the Flexural Behavior of FRP Strengthened RC Beams

Publication: Special Publication
Date: 3/1/2024

Finite Element Analysis of the Interface between FRP and Concrete

Publication: Special Publication
Date: 3/1/2024

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