01045594

Component

https://doi.org/10.3141/2040-05

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. The results of contractor-performed tests on in-place properties of hot-mix asphalt are increasingly used in the acceptance decision in many states. Results of tests performed by contractors and state departments of transportation (DOTs) in North Carolina, Florida, and Kansas consistently indicate that differences between contractors and state DOT test results for hot-mix asphalt concrete mat density are statistically significant. 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, test methods, verification procedures, and acceptance procedures) appear to have little if any effect on these comparisons. These findings provide information for state DOTs to consider in structuring their quality assurance programs, specifically the role of contractor-performed tests in acceptance decisions.

01091297

English

pp 41-47

2007

Transportation Research Record: Journal of the Transportation Research Board

9780309113045

Print

Figures (2) ; References (3) ; Tables (12)

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

Mat density

Construction; Highways; I52: Construction of Pavements and Surfacings

PRP, TRIS, TRB

Feb 8 2007 5:20PM

• 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
• 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
• Quality Assurance of Mix Properties of Hot-Mix Asphalt Concrete: Multistate Analysis Comparing Contractor and State Transportation Agency Test Results
• Range Imaging as Emerging Optical Three-Dimension Measurement Technology
• Roller-Compacted Concrete Shoulder Construction on Interstate Highway in Georgia
• Value of Pavement Smoothness