00819997

Component

https://doi.org/10.3141/1761-11

http://scholar.google.com...heim&publication_year=2001

State highway agencies currently use split-sample and independent-sample verification procedures for the purpose of comparing test results or verifying the contractor's overall construction process in independent assurance (IA) programs and quality assurance (QA) construction specifications. Sampling procedures are reviewed, and new statistically based methods for developing comparison procedures in both IA programs and QA specifications are presented. The statistically based approach determines an appropriate mean difference between either split-sample test results or independent-sample verification results by recognizing sample size, field variability, and inherent risks. A practical application is given using collected field data from hot mix asphalt (HMA) construction projects. State highway agencies and contractors will benefit from an understanding of the statistical concepts involved with split-sample and independent-sample comparison procedures and of what information an agency needs to determine if a contractor's overall test results are accurate. The concepts and procedures presented can be applied to all areas of highway construction involving split-sample and independent-sample verification tests, such as base materials, concrete structures and pavements, and HMA pavements.

This paper appears in Transportation Research Record No. 1761, Construction 2001.

English

p. 86-92

2001

Transportation Research Record

0309072212

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

Hot mix asphalt; Quality assurance; Quality control; Road construction; Sampling; Statistical quality control

Field data; Independent sample verification tests; Split sample verification tests

Construction; Highways; I52: Construction of Pavements and Surfacings

TRIS, TRB, ATRI

Nov 12 2001 12:00AM

• ALLOCATION OF RISKS UNDER BUILD-OPERATE-TRANSFER DELIVERY APPROACH FOR TRANSPORT INFRASTRUCTURE PROJECTS
• CRITICAL PATH METHOD-LINE OF BALANCE MODEL FOR EFFICIENT SCHEDULING OF REPETITIVE CONSTRUCTION PROJECTS
• DERIVATION OF EQUATION FOR COST OF PREMATURE PAVEMENT FAILURE
• DEVELOPING CRITICAL FIELD PERMEABILITY AND PAVEMENT DENSITY VALUES FOR COARSE-GRADED SUPERPAVE PAVEMENTS
• EFFECT OF FLAT AND ELONGATED COARSE AGGREGATE ON FIELD COMPACTION OF HOT-MIX ASPHALT
• EFFECT OF SUPERPAVE GYRATORY COMPACTOR TYPE ON COMPACTED HOT-MIX ASPHALT DENSITY
• EVALUATING DESIGN-BUILD PROCUREMENT DOCUMENTS FOR HIGHWAY PROJECTS: HOW GOOD ARE THEY?
• EXAMINATION OF OPERATOR VARIABILITY FOR SELECTED METHODS FOR MEASURING BULK SPECIFIC GRAVITY OF HOT-MIX ASPHALT CONCRETE
• FEASIBILITY OF USING PRECAST CONCRETE PANELS TO EXPEDITE CONSTRUCTION OF PORTLAND CEMENT CONCRETE PAVEMENTS
• FIELD CONDITIONING OF SUPERPAVE ASPHALT MIXES
• LESSONS-LEARNED SYSTEM FOR HIGHWAY CONSTRUCTIBILITY
• NEW JERSEY'S SUPERPAVE SPECIFICATION: THE NEXT GENERATION
• NIGHTTIME CONSTRUCTION ISSUES
• OVERVIEW OF NATIONAL WOOD IN TRANSPORTATION PROGRAM AND ITS FOCUS ON COMMERCIALIZING PROVEN TECHNOLOGY
• PARIS-LEXINGTON ROAD PROJECT: PROJECT REPORT
• THEORY BEHIND VIBRATION-BASED, ONBOARD ASPHALT DENSITY MEASURING SYSTEM
• USING PAVEMENT DISTRESS DATA TO ASSESS IMPACT OF CONSTRUCTION ON PAVEMENT PERFORMANCE
• WASHINGTON STATE DEPARTMENT OF TRANSPORTATION SUPERPAVE IMPLEMENTATION