01023488

Component

https://doi.org/10.3141/1946-06

http://scholar.google.com...rker&publication_year=2006

Quality assurance 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, originally performed for quality control purposes, are increasingly used in the acceptance decision in many states. The Georgia Department of Transportation (GDOT) uses contractor-performed tests in the acceptance decision on acceptable corroboration of GDOT-performed tests. Statistical analyses were performed to assess differences between tests conducted on hot-mix asphalt concrete by GDOT and its contractors during the 2003 construction season. Measurements of gradation and asphalt content taken by both parties were compared both across all projects and on a project-by-project basis for projects large enough to meet sample size requirements for this type of analysis. Both tabular and graphic representations of data are used to interpret the results. Statistically significant differences occur in some cases; these differences are much more common when comparing variability of these measurements than with the means. At the project level, on most projects in which statistically significant differences occur, the GDOT value typically is larger.

01031140

English

pp 47-54

2006

Transportation Research Record: Journal of the Transportation Research Board

0309099544

Print

Figures (3) ; References (10) ; Tables (10)

Acceptance tests; Aggregate gradation; Asphalt content; Contractors; Hot mix asphalt; Quality assurance; Quality control; Road construction; Statistical analysis

Georgia Department of Transportation

Testing variability

Construction; Data and Information Technology; Highways; Materials; I31: Bituminous Binders and Materials; I50: Construction and Supervision of Construction

TRIS, TRB, ATRI

Mar 3 2006 10:23AM

• Accuracy and Precision of Typical Quality Measures
• Comparative Analysis of Field Permeability Testing of Compacted Hot-Mix Ashpalt Pavements: Using Air and Water Permeameters
• Estimating Percent Within Limits for Skewed Populations
• Evaluating Specification Limits
• Evaluation of Superpave Mix Design for Low-Volume Roads in New Jersey
• Evaluation of the Effect of Sampling Location on Laboratory-Measured Quality Control Parameters
• Field Trial of Infrared Joint Heater to Improve Longitudinal Joint Performance in New Hampshire
• Finite Difference Modeling of Misaligned Dowel Bars and Their Effects on Joint Performance
• Mathematical Modeling Procedures for Performance-Related Specifications
• Probabilistic Procedure for Analyzing Construction Pay Adjustment Systems
• Quantification of Risk Cost Associated with Short-Term Warranty-Based Specifications for Pavements
• Quantity-Based Approach to Preliminary Cost Estimates for Highway Projects
• Rational Estimation of Construction Impact on Pavement Performance
• Sample Size Requirements for Seismic and Traditional Testing of Concrete Pavement Strength
• Seismic Testing to Determine Quality of Hot-Mix Asphalt
• Thermal Imaging of Hot-Mix Asphalt Paving Projects in Connecticut
• Thermal Imaging of Hot-Mix Paving Operations for Quality Assessment: State of the Practice in Texas
• Visually Improving Construction Contract Administration