00637678

Component

http://onlinepubs.trb.org...trr/1993/1388/1388-010.pdf

Reinforcement of asphalt pavements has become a feasible alternative within the past decade, largely because of grids. Whether reinforcement is an effective alternative for any given situation, however, must be established on a performance and economic basis. Potential performance benefits include reductions in rutting, cracking, and layer thickness, plus extended pavement life. The effectiveness of reinforced pavements depends on the interaction between reinforcement and the asphalt mix. Such interaction is provided by a number of mechanisms including interlock, bond, confinement, and membrane effects. The extent to which a mechanism dominates the operation of a given reinforcement depends on the geometry, strength, and the elastic properties of the grid involved. The effects of various geometric properties of reinforcements on the effectiveness of grids through the mechanisms under which they operate are discussed. The test results showed that the interlock operating mechanism is governed mainly by the grid opening size and the thickness of strand. The bond operating mechanism is governed mainly by the grid surface area.

This paper appears in Transportation Research Record No. 1388, Rigid and Flexible Pavement Design and 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

01403222

English

p. 80-87

1993

Transportation Research Record

0309054575

Figures (8) ; Photos (1) ; References (11) ; Tables (3)

Asphalt pavements; Bonding; Material reinforcement; Measures of effectiveness; Pavement cracking; Pavement layers; Pavement performance; Pavements; Rutting; Service life; Shape; Thickness

Confinement; Effectiveness; Geometry (Shape); Reduction (Decrease)

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Sep 28 1993 12:00AM

• ANALYSIS OF CRACK RESISTANCE OF ASPHALT CONCRETE OVERLAYS--A FRACTURE MECHANICS APPROACH
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• BREAKING AND SEATING OF CONCRETE PAVEMENTS: KENTUCKY'S EXPERIENCE
• COMPARISON OF FOUR DIFFERENT METHODS FOR MEASURING DEFLECTIONS IN JOINTED REINFORCED CONCRETE PAVEMENTS
• DEVELOPMENT AND IMPLEMENTATION OF A MECHANISTIC, EMPIRICALLY BASED OVERLAY DESIGN PROCEDURE FOR FLEXIBLE PAVEMENTS
• DEVELOPMENT OF STRATEGIC HIGHWAY RESEARCH PROGRAM LONG-TERM PAVEMENT PERFORMANCE CLIMATIC DATA BASE
• DIRECT TENSION AND SIMPLE STIFFNESS TESTS--TOOLS FOR THE FATIGUE DESIGN OF ASPHALT CONCRETE LAYERS
• EFFECTS OF TEMPERATURE ON EARLY CRACK FORMATION IN PORTLAND CEMENT CONCRETE PAVEMENTS
• ESTIMATION OF AXLE LOADS OF HEAVY VEHICLES FOR PAVEMENT STUDIES
• EXAMINATION OF PURE ENVIRONMENTAL EFFECTS ON PAVEMENT CONDITION
• LOAD EQUIVALENCY CONCEPTS: A MECHANISTIC REAPPRAISAL
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• PERFORMANCE MONITORING OF JOINT LOAD TRANSFER RESTORATION
• PERFORMANCE OF INTERLOCKING CONCRETE PAVEMENTS IN NORTH AMERICA
• REHABILITATION PROCEDURES FOR FAULTED RIGID PAVEMENT
• REMAINING FATIGUE LIFE ANALYSIS: COMPARISON BETWEEN DENSE-GRADED CONVENTIONAL ASPHALT CONCRETE AND GAP-GRADED ASPHALT-RUBBER HOT MIX
• RIGID PAVEMENT DESIGN FOR PORTS IN CHILE
• SYSTEMS APPROACH TO THE USE OF AUTOMATION TECHNOLOGY IN DRILLED FOUNDATION CONSTRUCTION
• THEORETICAL ANALYSIS OF THE EFFECTS OF WIDE-BASE TIRES ON FLEXIBLE PAVEMENTS USING CIRCLY
• USE OF A THREE-DIMENSIONAL, DYNAMIC FINITE ELEMENT PROGRAM FOR ANALYSIS OF FLEXIBLE PAVEMENT