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Title:

Procedures and Guidelines for Validating Contractor Test Data

Accession Number:

01741342

Record Type:

Monograph

Availability:

Find a library where document is available


Order URL: http://worldcat.org/isbn/9780309481441

Abstract:

Many state departments of transportation (DOTs) utilize contractor test data in the acceptance process for construction materials. Federal regulation 23 CFR 637B permits the use of contractor test data for acceptance of construction materials, but it requires DOTs to validate the data with independent test results. A combination of hypothesis tests (specifically the F- and t-tests) is commonly used to determine if the contractor and DOT test results are from the same statistical population. However, other statistical approaches may provide a better means for evaluating contractor test data and address related issues.This report reviews and evaluates the procedures and practices for validating contractor test data used in the acceptance of construction materials. The report also proposes a related practice for incorporation into AASHTO Standard Specifications for Transportation Materials and Methods of Sampling and Testing. The report also includes examples illustrating application of the proposed procedure.

Report/Paper Numbers:

Project 10-100

Language:

English

Authors:

Hand, Adam J T

ORCID 0000-0002-5041-7491

Nimeri, Mohamed A
Hajj, Elie Y
Sebaaly, Peter E
West, Randy C
Heitzman, Michael A
Yin, Fan
Hughes, Charles S
Tayabji, Shiraz

Pagination:

106p

Publication Date:

2020

Serial:

NCHRP Research Report

Issue Number: 946
Publisher: Transportation Research Board
ISSN: 2572-3766

ISBN:

9780309481441

Media Type:

Digital/other

Features:

Appendices; Figures; References; Tables

Subject Areas:

Construction; Highways; Materials

Files:

TRIS, TRB, ATRI

Created Date:

May 28 2020 9:21AM