Patel, A J (1996) Development of fatigue based pay adjustment factors in performance-related specifications for full-depth asphalt concrete pavements. PhD thesis, University of Illinois at Urbana-Champaign, USA.
Abstract
This research focused on the development of fatigue-based payment adjustment factors for use in performance-related specifications for full-depth asphalt pavements. A rational method of adjusting a contractor's payment as a function of the quality of the product is an essential element of a performance related specification (PRS). The Quality Control/Quality Assurance (QC/QA) specifications and practices in the highway industry for the construction of asphalt pavements were reviewed. The survey indicated that many hybrids of method related and end result specifications are being used by the states. Currently, no state is known to be utilizing a PRS for full-depth pavements. Details of the QC/QA program, testing and sampling frequencies, and payment adjustment schedules are presented. A review of extant performance prediction models indicated that additional research in developing quantifiable relationships between the key distresses in an AC pavement and contractor controlled material and construction (M&C) variables is necessary before a comprehensive PRS can be developed. However, satisfactory secondary relationships between the M&C variables (air voids, asphalt content, fines content and thickness) and fatigue cracking, a major structural distress, were identified. Fatigue failure is thought to be influenced not only by the mean values of the M&C factors but also by their variability. A computer simulation program was developed to examine the effect of deviations from target quality levels. The economic consequence of these deviations was examined by using a life-cycle costs strategy that included maintenance and user operating costs. A rational payment adjustment schedule was defined as one that would provide a mechanism by which pay adjustments could be established that would reflect the economic impact of contractor nonconformance to target quality levels. The pay factors developed are a function of the percent change in the anticipated present worth of the life-cycle costs of the as-constructed pavement compared to the as-designed pavement.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Thesis advisor: | Thompson, M R |
| Uncontrolled Keywords: | economic impact; failure; highway; pavement; specifications; fatigue; payment; performance related specification; simulation |
| Index terms: | distress, performance prediction, deviation, sampling, operating cost, variability, testing, quality control, specification, asphalt pavement, thickness, quality assurance, survey, strategy, computer simulation, fatigue, economic impact, program |
| Subjects: | modelling and simulation, professional practice, financial and cost management, project delivery, economic analysis, data collection methods, materials science, health conditions and diseases, infrastructure and transport systems, quality assurance, financial analysis, statistical analysis, management, structural engineering, software systems, performance management, contractual condition |
| Topics: | Contract Administration, Quality Management, Digital Applications, Engineering Principles, Research Practice, Health and Safety, Business Strategy, Cost Management |
| Descriptive scope: | 4 PCEA |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here