01340761

Component

https://doi.org/10.3141/2240-07

http://scholar.google.com...born&publication_year=2011

Critical components of the nation’s bridge network, concrete bridge decks, are deteriorating at a rapid rate. This deterioration can be attributed to several factors; however, winter salt application, the diffusion of chlorides to the reinforcing steel, and eventual corrosion of the reinforcement are primary culprits. Multiple protection solutions, include concrete protective systems, sealers, additional cover to the reinforcement, membranes, and epoxy-coated reinforcement, but each solution has shortcomings and does not completely address the problem. Ultra-high-performance concrete, a relatively new material with exceptional strength and durability characteristics, may be a solution to these problems when it is used as a thin overlay on bridge decks. An experimental study was performed to evaluate the bond strength between an ultra-high-performance concrete overlay and a normal concrete substrate with different types of surface textures, including smooth, low roughness, and high roughness. Slant shear and splitting prism tests were performed to quantify the bond strength under compression combined with shear and under indirect tension. Test results demonstrated that under compressive loading, the bond strength was greater than the strength of the substrate when the surface texture was greater than the standard smooth finished mortar surface. For the bond strength under indirect tension, results were not highly sensitive to the surface roughness. In both cases, the measured bond strengths fell within the ranges specified in the American Concrete Institute’s "Guide for the Selection of Materials for the Repair of Concrete."

01361506

11-1481

English

pp 40-49

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167581

Print

Figures (1) ; Photos (10) ; References (22) ; Tables (2)

Bond strength (Materials); Bridge decks; Concrete overlays; Corrosion; Durability; High performance concrete; Roughness; Texture; Ultra high performance concrete

Bridges and other structures; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete

TRIS, TRB, ATRI

Feb 17 2011 5:49PM

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• Development of Micromechanics Models and Innovative Sensor Technologies to Evaluate Internal Frost Damage of Concrete
• Effect of Blended Fly Ashes in Mitigating Alkali–Silica Reaction
• Effect of Fiber Addition, Heat Treatment, and Preset Pressure on Mechanical Properties of Ultra-High-Strength Mortars
• Effects of Roadway Contaminants on Titanium Dioxide Photodegradation of Nitrogen Oxides
• Efforts to Improve Quality Assurance and Quality Control of Concrete in Virginia
• Experimental Study on Permeability and Mechanical Properties of Nanomodified Porous Concrete
• Heat of Hydration for Cement: Statistical Modeling
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• Optimizing Aggregates to Reduce Cement in Concrete Without Reducing Quality
• Role of Potassium Acetate Deicer in Accelerating Alkali–Silica Reaction in Concrete Pavements Relationship Between Laboratory and Field Studies
• Thermophysical Optimization of Specialized Concrete Pavement Materials for Collection of Surface Heat Energy and Applications for Shallow Heat Storage