01045583

Component

https://doi.org/10.3141/2040-04

http://scholar.google.com...rker&publication_year=2007

A typical component of highway construction quality assurance programs is the process by which highway construction elements are sampled and tested to ensure compliance with specifications and other project requirements. Results of contractor-performed tests of mix properties of hot-mix asphalt (HMA) concrete are increasingly used in the acceptance decision by many state departments of transportation (DOTs). Results of tests performed by contractors and state DOTs in Florida, North Carolina, and California consistently indicate that differences between contractors and state DOT test results for HMA concrete are statistically significant for most mix properties. Furthermore, these comparisons consistently indicate less variable and more favorable contractor test results, relative to specification limits, that give more favorable acceptance outcomes. Details of quality assurance processes (sampling and testing frequencies, verification procedures, and acceptance procedures) seem to have little, if any, effect on comparisons. Those findings provide information for state DOTs to consider in structuring their quality assurance programs, specifically the use of contractor-performed tests for acceptance decisions.

01091297

English

pp 33-40

2007

Transportation Research Record: Journal of the Transportation Research Board

9780309113045

Print

Figures (2) ; References (6) ; Tables (12)

Acceptance tests; Alternatives analysis; Asphalt concrete; Contractors; Hot mix asphalt; Quality assurance; State departments of transportation

Construction; Highways; I52: Construction of Pavements and Surfacings

PRP, TRIS, TRB, ATRI

Feb 8 2007 5:10PM

• Achieving 4% Air Voids in Real Pavements with Superpave
• Assessing Potential for Warm-Mix Asphalt Technology Adoption
• Calibration of Nonnuclear Density Gauge Data for Accurate In-Place Density Prediction
• Comparisons of Contractor and State Transportation Agency Quality Assurance Test Results on Mat Density of Hot-Mix Asphalt Concrete: Findings of a Multistate Analysis
• Early Contractor Involvement and Target Pricing in U.S. and UK Highways
• Effect of Performance Warranties on Cost and Quality of Asphalt Pavements
• Forensic Investigation of Debonding in Rich Bottom Pavement
• Framework Model for Determining Incentive and Disincentive Amounts
• Laboratory Evaluation of Alternative Dowel Bars for Use in Portland Cement Concrete Pavement Construction
• Launching of the San Cristobal Bridge
• Range Imaging as Emerging Optical Three-Dimension Measurement Technology
• Roller-Compacted Concrete Shoulder Construction on Interstate Highway in Georgia
• Value of Pavement Smoothness