01332859

Component

https://doi.org/10.3141/2240-06

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

Some efforts undertaken by the Virginia Department of Transportation (DOT) to improve the quality assurance and quality control of concrete are described. Such improvements lead to safe, cost-effective structures that require minimal maintenance and minimal inconvenience to travelers. Virginia DOT’s primary effort in this regard is to develop end-result specifications for hydraulic cement concrete that include concrete parameters or characteristics that are expected to lead to satisfactory performance. End-result specifications address the certification of personnel and equipment that ensures proper equipment is used and that workers are knowledgeable and capable of conducting the tests or inspections. The concrete produced is within the authority and responsibility of the contractor or producer. Concrete is prequalified before delivery to the job site. The contractor conducts the prequalification tests on fresh and hardened concretes and performs part of the acceptance tests related to the fresh concrete. Virginia DOT is responsible for acceptance tests on hardened concrete only. Record keeping of data is required for the prequalification and during construction. Data are collected not only for future reference but also to apply necessary corrections during the project. Any discrepancies or unsatisfactory responses are immediately addressed.

01361506

11-1425

English

pp 36-39

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167581

Print

References (10)

Acceptance tests; Concrete; Improvements; Quality assurance; Quality control; Recordkeeping; Specifications

End result specifications

Virginia

Highways; Materials; I32: Concrete

PRP, TRIS, TRB, ATRI

Feb 17 2011 5:48PM

• Characterization of Interface Bond of Ultra-High-Performance Concrete Bridge Deck Overlays
• Characterization of Moisture Transport and Its Effect on Deformations in Jointed Plain Concrete Pavement
• Cyclic Heat Island Impacts on Traditional Versus Pervious Concrete Pavement Systems
• 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
• Experimental Study on Permeability and Mechanical Properties of Nanomodified Porous Concrete
• Heat of Hydration for Cement: Statistical Modeling
• New Approach to Calibrate the Mortar Flow Table
• 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