bond in concrete Topic

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

A Numerical Analysis Methodology for the Strengthening of Deep Cap Beams

Publication: Special Publication
Date: 10/1/2019

Seismic Experiments and Analysis of Repaired Bridge Columns Using CFRP Donut

Publication: Special Publication
Date: 10/1/2019

Concrete Beams with Fully Corroded Steel Repaired with CFRP Laminates

Publication: Special Publication
Date: 10/1/2019

Investigation of High Strength Concrete Behavior Made with Very High Percentages of Metakaolin and Steel Fibers

Publication: Special Publication
Date: 9/30/2019

Titania and Silica Nanoparticle-Modified Coatings for Cementitious Materials

Publication: Special Publication
Date: 9/20/2019

Shear Strength of Structural Walls Subjected to Load Cycles

Publication: Concrete International
Date: 5/1/2019

Bond Behavior of Concrete Strengthened with FRP Laminates and NSM Bars Subjected to Accelerated Aging using Freeze-Thaw Cycles

Publication: Special Publication
Date: 2/1/2019

Cyclic Loading Behavior of CFRP-Wrapped Non-Ductile Beam-Column Joints

Publication: Special Publication
Date: 2/1/2019

Improving the Durability of Impact Damaged PC Bridge Girders Using CFRP Rod Panel Retrofit

Publication: Special Publication
Date: 2/1/2019

Experimental Investigation of CFRP Prestressed Concrete Beams

Publication: Special Publication
Date: 2/1/2019

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