00381702

Component

http://onlinepubs.trb.org...s/trr/1983/916/916-003.pdf

https://scholar.google.co...ther&publication_year=1983

A review of recent theoretical models for analyzing reflection cracking in pavements is presented. Four models are applicable to asphalt overlays of jointed-concrete pavements, and one model deals with asphalt overlays of existing flexible pavements. Both mechanistic and phenomenological models are reviewed, together with a critique of each model's shortcomings. A two-dimensional finite-element analysis of flexible overlay stress for jointed-concrete slabs subjected to seasonal and daily temperature changes is presented. The analysis shows that, contrary to some existing models, curling temperature gradients (cold or slab surface relative to bottom) produce joint openings that induce only tension stress in the overlay. A technique is presented for equating daily (curling) thermal loads to seasonal thermal loads in terms of equivalent maximum overlay stress. The finite-element analysis suggests that a reflection cracking model must consider the ratio of loading and temperature dependency of the asphalt overlay modulus in any stress calculation. Laboratory testing is currently being conducted to verify reflection cracking models and assess performance of geotextiles and stress-absorbing membrane interlayer systems to reduce cracking. (Author)

Publication of this paper sponsored by Committee on Pavement Rehabilitation. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01420425

pp 18-25

1983

Transportation Research Record

0309035597

Print

Figures (14) ; References (9)

Absorption; Bituminous materials; Concrete pavements; Curling; Fabrics; Finite element method; Flexible pavements; Geotextiles; Joint construction; Laboratory tests; Mathematical models; Reinforcing steel; Temperature; Tension; Thermal stresses

Change; Membranes; Tensile stress; Thermal loads

Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB

Mar 30 1984 12:00AM

• DYNAMIC TEST TO PREDICT FIELD BEHAVIOR OF FILTER FABRICS USED IN PAVEMENT SUBDRAINS
• EVALUATION OF TWO GEOTEXTILE INSTALLATIONS IN EXCESS OF A DECADE OLD
• GEOTEXTILE EARTH-REINFORCED RETAINING WALL TESTS: GLENWOOD CANYON, COLORADO
• GEOTEXTILE FILTER CRITERIA
• LABORATORY TESTING OF FABRIC INTERLAYERS FOR ASPHALT CONCRETE PAVING: INTERIM REPORT
• LONG-TERM IN SITU PROPERTIES OF GEOTEXTILES
• MECHANISM OF GEOTEXTILE PERFORMANCE IN SOIL-FABRIC SYSTEMS FOR DRAINAGE AND EROSION CONTROL (ABRIDGMENT)
• NEW YORK STATE DEPARTMENT OF TRANSPORTATION'S EXPERIENCE AND GUIDELINES FOR USE OF GEOTEXTILES
• OPTIMUM-DEPTH METHOD FOR DESIGN OF FABRIC-REINFORCED UNSURFACED ROADS
• PERMEABILITY TESTS OF SELECTED FILTER FABRICS FOR USE WITH A LOESS-DERIVED ALLUVIUM
• TREATMENTS FOR REDUCTION OF REFLECTIVE CRACKING OF ASPHALT OVERLAYS ON JOINTED-CONCRETE PAVEMENTS IN GEORGIA
• USE OF FABRICS FOR IMPROVING THE PLACEMENT OF TILL ON PEAT FOUNDATION