01622790

Component

https://doi.org/10.3141/2630-13

The Wisconsin Department of Transportation (DOT), Madison, uses a quality management program (QMP) specification for acceptance and payment of hot-mix asphalt (HMA) pavement. The QMP allows for product acceptance on the basis of contractor quality control (QC) testing when verified by the Wisconsin DOT quality verification (QV) tests. The contractor is required to do daily QC testing of mix properties in a department-certified, qualified laboratory located at the plant site. The Wisconsin DOT maintains a QV program (QVP) and conducts QV tests to determine the quality of the final product. QV and QC test results are compared, and a mix is considered acceptably verified if the two results are within specified limits. When test results do not meet these limits, the Wisconsin DOT performs referee tests to determine mixture conformance, acceptability, and payment. In 2011, the Wisconsin DOT began to see significant increases in the number of requests for referee testing as a result of wide disparities between QC and QV laboratory test results. To investigate this disparity, the department initiated a round robin laboratory test program. Results from the investigation proved to be insightful. The program was expanded and is now a key component of the Wisconsin DOT annual laboratory qualification certification program. This paper describes the program, how it is administered, how tests results are analyzed, and how nonconforming laboratories are identified. Test results obtained from the program are presented and recommendations developed for program improvements. The program details should be useful to other state highway agencies that use contractor QC tests for acceptance.

01634656

17-01948

English

pp 103–109

2017

Transportation Research Record: Journal of the Transportation Research Board

9780309441841

Digital/other

Figures (4) ; References (2) ; Tables (5)

Certification; Contractors; Hot mix asphalt; Laboratories; Laboratory tests; Quality control; Recommendations; Test procedures

Wisconsin Department of Transportation

Construction; Highways; Materials; Pavements

PRP, TRIS, TRB, ATRI

Dec 8 2016 10:41AM

• Assessment of State Agencies’ Practices in Managing Geotechnical Risk in Design–Build Projects
• Comparison of Qualifications-Based Selection and Best-Value Procurement for Construction Manager–General Contractor Highway Construction
• Density Observations from a Full-Scale, Untrafficked Test Section with Guidance for Dryback Methods
• Economic Impact Analysis of Bridge Construction
• Estimating Earthwork Volumes Through Use of Unmanned Aerial Systems
• Evaluation of Stainless Steel Fasteners for Bolted Field Splice Connections of ASTM A1010 Corrosion-Resistant Steel Plate Girders
• Exploration of Early Work Packaging in Construction Manager–General Contractor Highway Projects
• Factors Related to the Appearance of Transverse Bumps in Asphalt Overlays Placed over Crack Sealant
• Field and Laboratory Properties of Roller-Compacted Concrete Pavements
• Framework for Objectively Determining Best Practices for Alternative Contracting Methods
• Highly Modified Asphalt Binder for Asphalt Crack Relief Mix
• Impact of Alternative Project Delivery Systems on the International Roughness Index: Case Studies of Transportation Projects in the Western United States
• Impact of High Asphalt Binder Replacement on Level Binder Properties for Controlling Reflective Cracking
• Monitoring During Lateral Bridge Slide
• New Quality Assurance Tests for Building Quality Concrete Pavement
• Project Scoping Process Model Development to Achieve On-Time and On-Budget Delivery of Highway Projects
• Roles and Responsibilities of Independent Cost Estimator in Construction Manager–General Contractor Highway Construction