Quality Assurance Specification Review for Hot Mix Asphalt and Structural Concrete

Quality Assurance Specification Review for Hot Mix Asphalt and Structural Concrete
Author: Chuck E. Hughes
Publisher:
Total Pages: 144
Release: 2000
Genre: Asphalt
ISBN:
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This report includes three parts: (1) Final Report for Quality Assurance Specifications Review dated May 2000; (2) Addendum to the Final Report dated December 2000; and (3) Draft Construction Manual and Inspection Guidelines dated May 2000. The study tasks included a detailed analysis of the quality assurance (QA) special provision, evaluation of Department and Contractors risks, examination of practice of using Contractors tests results for acceptance, guidelines for effective use of QA specifications by field inspection staff, need for adjustments to material specification limits, interviews with Department and Contractor personnel and the impact of recommended changes to the Contractors.

Qualifying Items of Work for End-result Specifications

Qualifying Items of Work for End-result Specifications
Author: William E. Elmore
Publisher:
Total Pages: 22
Release: 1997
Genre: Asphalt concrete
ISBN:
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The Texas Department of Transportation (TxDOT) is presently using a quality control/quality assurance (QC/QA) specification for hot-mix asphalt concrete pavement. There is a strong interest in determining if other construction items can be converted to this type of specification. The purpose of this report is to (1) review the experiences of a large number of key states believed to be using these types of specifications, (2) review the TxDOT standard specifications in order to recommend candidates for development, and (3) develop a recommended QC/QA specification for flexible base. Of the 23 states contacted, 19 cooperated in the survey, the majority of which were willing to provide copies of their specifications. Fifteen specifications have been received. Based on the information obtained from these reviews, nine items have been recommended for consideration by TxDOT.

Effectiveness Comparison of TxDOT Quality Control/quality Assurance and Method Specifications

Effectiveness Comparison of TxDOT Quality Control/quality Assurance and Method Specifications
Author: Mansour Solaimanian
Publisher:
Total Pages: 120
Release: 1998
Genre: Asphalt concrete
ISBN:
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This purpose of this study was to evaluate the quality of the hot mix asphalt concrete produced under quality control/quality assurance (QC/QA) specification item 3063. During the first phase of this project, conducted between September 1996 and February 1997, an extensive amount of technical information and numerical information was gathered and analyzed. During the second phase of this project, various other activities were carried out, including a survey of other states to assess their approach in developing and implementing QC/QA specifications, a physical survey of QC/QA and non-QC/QA specification projects in Texas, and a limited evaluation of the cost of the projects. This report presents the results, findings, conclusions, and recommendations based on the collected information and on the work performed during the course of this research program.