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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.
The manual is intended to provide information for the quality control of hot-mix asphalt pavements. Although emphasis is placed on the duties and responsibilities of asphalt inspectors, good quality control procedures must also involve other personnel who should understand quality control procedures and efficient plant and paving practices. The manual also details all aspects of hot-mix asphalt pavement construction from the initial acceptance of the aggregate and asphalt to the laying and compaction.
Realistic field-test protocols and equipment, which in a rational manner, combine the results from laboratory and field tests with those used for quality control during construction, have been developed. Seismic nondestructive testing technology has been used for this purpose. Simple laboratory tests that are compatible with the field tests have been recommended. All these tests have several features in common. They can be performed rapidly (less than 3 min.), and their data reduction processes are simple and almost instantaneous.