Development of Pay Factors to Regulate Chip Seal Construction Quality

Highway agencies have often used quality assurance specifications that specify end product quality for assuring construction quality. Also, agencies are increasingly incorporating performance-related specifications (PRS) in construction contracts to specify quality in terms of parameters related to desired long-term performance. The PRS also provide a means to account for the value lost or gained by the variances of these parameters from the specified target values. Although such PRS have seen limited use in the construction of new pavements, their use for pavement preservation treatments (e.g., chip seals) has been generally non-existent. The objective of this paper is to establish pay adjustment factors based expected performance of chip seals (aggregate loss and bleeding). The percent embedment (PE) of aggregates into emulsified asphalt was selected as the acceptance quality characteristic (AQC). Relationships were further developed between quality measures, service life, and pay adjustment factors. The expected pay curves were developed based on the quality measures and were used to establish acceptable and unacceptable quality levels. The pay adjustment factors were evaluated to ensure fair payments for the quality of work produced. The paper also documents the process to develop pay adjustment factors based on AQC and performance relationship and evaluate the risks associated with receiving appropriate pay for predicted percentage within limits (PWL).

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 155-166
  • Monograph Title: Airfield and Highway Pavements 2019: Design, Construction, Condition Evaluation, and Management of Pavements

Subject/Index Terms

Filing Info

  • Accession Number: 01717904
  • Record Type: Publication
  • ISBN: 9780784482452
  • Files: TRIS, ASCE
  • Created Date: Jul 18 2019 3:01PM