Forecasting Serviceability Loss of Flexible Pavements

2. Government Accession No. 4. Title ond Subtitle 7. Authorf s) Danny y. Lu, Rober·t L. Lytton, and William M. Moore 9. Performing Organi zotion Nolfteltnd Address Texas Transportation Institute Texas A&M·University Co+lege Station, 77843 12. Sponsoring A;eney Nan'te and· Address Texas High-way Department 11th & Brazos Austin.,· Texas . 18701 15. SupphJtnen_tory Notes TECHNICAL REPORT STANDARD THLfPACI 3. Recipient's Catalog No. S. Report Dcite 8. Performing Organi zotion Report No. Research Report No. tO. Work Unit 11. Contract or Grant No. ·. F .. ·.1 s.e.pte. mb.er 19· .. 7.3 1na - November 1974 14. Spc.nsoring Agency Cod• Research performed.in cooperation with DOT, FltWA. Development of Improved Method for Pavement Rehabilitation Forecasting 16. Abstract Pavement performance data collected in Research Project 2-8 .... 62..:..32, ''Extension of AASHO Road Test Results," are analyzed in this study. Serviceabilityloss of three flexible pavement types due to fatigue, swelling, shrinkageand.thermal cracking are to many environmental, traffic, time, designartd constructio material variables. A "two .... step constrained select regression procedure" i$ developed to examine the effect that each variable has on pavement serviceability loss. StochastiC:reliability concepts are applied to evaluate the expected.value and variance of the serviceability loss. . . . K•y Worda 18. Oiatrlbution Statement Select regression, differential serisi- -tiv,ity, stQchastic reliability, service ability loss, pavement performance, fiexible pavement system, fatigue 19. 21. No. of Pages 22. Price Unclassified . Unclassified 79 Form DOT F .1700.7 ca.stJ

Forecasting Serviceability Loss of Flexible Pavements

Documents

select regression

differential serisitivity

service ability loss

pavement performance

fiexible pavement system

fatigue