00381703

Component

http://onlinepubs.trb.org...s/trr/1983/916/916-004.pdf

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

In recent years, the use of engineering fabric, when placed directly on the subgrade and covered with a single aggregate layer, has been a cost-effective alternative in unsurfaced road construction, especially on soft subgrades. Most fabric-reinforced unsurfaced road design criteria use Boussinesq stress-distribution theory to determine the amount of aggregate cover on the fabric. The research presented in this paper shows that placement of an optimum depth of aggregate on the fabric, when related to the width of the loaded area and independent of subgrade strength and wheel load, will increase strength and deformation resistance of the aggregate cover and produce significant Burmister-type modular ratio stress reductions at the subgrade surface. An alternate method for the design of fabric-reinforced unsurfaced roads, based on the described research, is presented. The method requires significantly less aggregate cover on the engineering fabric than predicted by other current methods of fabric-reinforced road design. (Author)

Publication of this paper sponsored by Committee on Low-Volume Roads. 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 26-32

1983

Transportation Research Record

0309035597

Print

Figures (7) ; References (8) ; Tables (1)

Aggregates; Base course (Pavements); Boussinesq equation; Deformation curve; Depth; Design methods; Fabrics; Material reinforcement; Optimization; Strength of materials; Subgrade (Pavements); Unpaved roads; Wheel loads

Design; Geotechnology; Highways; Materials; I42: Soil Mechanics

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
• PERMEABILITY TESTS OF SELECTED FILTER FABRICS FOR USE WITH A LOESS-DERIVED ALLUVIUM
• REFLECTION CRACKING MODELS: REVIEW AND LABORATORY EVALUATION OF ENGINEERING FABRICS
• 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