00743105

Component

https://doi.org/10.3141/1575-10

http://scholar.google.com...tick&publication_year=1997

The Illinois Department of Transportation (IDOT) has recently undertaken a quality management program to improve the quality of construction, allow more innovation, and reduce IDOT's management of industry construction programs. The Asphalt Concrete (AC) Quality Control/Quality Assurance (QC/QA) program is a significant part of this quality management program. IDOT accredits the success of the AC QC/QA program to gradual implementation and contractor and industry involvement. In 1991, four projects were constructed under a newly developed QC/QA specification. After reviewing and evaluating feedback from the contractors and IDOT personnel, the specification was revised for use on 1992 projects. In 1992, IDOT let 30 QC/QA projects, and in 1993, 65 QC/QA projects. In 1994 and 1995, most AC projects containing over 225 metric tons (250 tons) of hot-mix asphalt (HMA) were designated as QC/QA projects. In conjunction with this effort on AC quality, an aggregate certification program was implemented. The program ensures that aggregate gradation is highly controlled and is acceptable for incorporation into the mixture. Training programs for contractor QC and aggregate certification were also implemented. Analysis of the data indicates an increase in uniformity of the HMA, potentially leading to a 15% increase in fatigue life. IDOT is now examining the implications of developing end-result and performance-related specifications (ERS/PRS) for the AC QC/QA program. In the summer of 1996, one QC/QA project was shadowed and evaluated based on newly developed ERS/PRS.

This paper appears in Transportation Research Record No. 1575, Construction: Flexible Pavements, Bridges, Quality, and Management.

English

p. 66-74

1997

Transportation Research Record

0301061601

Figures (3) ; References (18) ; Tables (5)

Aggregate gradation; Construction; Contractors; Fatigue (Mechanics); Hot mix asphalt; Performance based specifications; Quality assurance; Quality control; Specifications; State departments of transportation; Training programs

Construction specifications; End result specifications; Fatigue life; Performance specifications

Illinois

Construction; Highways; Materials; I31: Bituminous Binders and Materials; I52: Construction of Pavements and Surfacings

TRIS, TRB

Nov 13 1997 12:00AM

• APPLICABILITY OF NEW FLEXIBLE PAVEMENT SMOOTHNESS SPECIFICATION FOR ASPHALT OVERLAYS
• COMPREHENSIVE QUALITY CONTROL OF PORTLAND CEMENT CONCRETE WITH SEISMIC METHODS
• CONSTRUCTABILITY: A QUALITY IMPROVEMENT APPROACH TO TRANSPORTATION PROJECTS
• DEVELOPMENT OF PERFORMANCE-RELATED SPECIFICATIONS FOR HOT-MIX ASPHALT PAVEMENTS THROUGH WESTRACK
• FINITE-ELEMENT MODELING OF RED MAPLE GLUED-LAMINATED T-BEAMS AND BRIDGE BEHAVIOR
• GEOGRAPHIC INFORMATION SYSTEMS AS A SUPPORT TOOL IN CONSTRUCTION COST ESTIMATING IN STATE DOTS
• GEOGRAPHIC INFORMATION SYSTEMS FOR TRACKING BRIDGE COMPONENT INSPECTION AND REPAIRS
• IMPROVING ASPHALT PAVING PRODUCTIVITY
• IMPROVING CONCEPTUAL ESTIMATING METHODS USING HISTORICAL COST DATA
• INVESTIGATION OF CRITICAL QUALITY ASSURANCE PARAMETER VARIATIONS FOR CONCRETE
• LABORATORY TESTING OF STRESS-LAMINATED WOOD DECKS ON STEEL BEAMS
• PERFORMANCE FACTORS AND QUALITY CONTROL/QUALITY ASSURANCE FOR POROUS PAVEMENTS
• PERFORMANCE MEASURES FOR CONSTRUCTION ADMINISTRATION
• QUANTIFYING THE EFFECT OF PAVEMENT PERFORMANCE CHARACTERISTICS USING PARTIAL DERIVATIVES
• ROBOCRANE CONSTRUCTION OF BRIDGES
• TRAFFIC DENSIFICATION OF ASPHALT CONCRETE PAVEMENTS
• USING GROUND-PENETRATING RADAR AND DIELECTRIC PROBE MEASUREMENTS IN PAVEMENT DENSITY QUALITY CONTROL