The Canadian Long Term Pavement Performance (C-LTPP) project currently involves pavement performance monitoring of a range of alternative asphalt concrete overlays over asphalt concrete pavements on granular bases on 53 test sections at 20 test sites throughout Canada. In 1990, an analysis project was intitiated as part of C-LTPP. The objective of this analysis project was: "to review from an analysis perspective, the type, quantity and quality of the data being assembled under the C-LTPP program so as to ensure that this data could support the statistical and other analysis required to determine the cost effectiveness of alternative rehabilitation methods and to determine the effect of traffic, environment, soil type, etc. upon pavement performance". This paper reports a number of recommended corrective actions resulting from the review of the proposed analysis framework, including: 1) to expand the C-LTPP data collection activities to include the data required to determine user costs, and 2) use Bayesian statistical methods to address the small sample size problem. (A)
Samenvatting