00488603

Component

http://onlinepubs.trb.org...trr/1988/1188/1188-005.pdf

https://scholar.google.co...yatt&publication_year=1988

To further knowledge of the pull-out resistance of grids, a series of pull-out tests was performed in the laboratory. The test regimen included the effects of overburden pressure, grid specimen length and width, and relative density of the sand on the pull-out resistance of the reinforcement. Tests were also performed to find the effect of soil particle size on the pull-out resistance of grids. It was found that the pull-out resistance of grids is a function of the relative density of the soil, the particle size, the length and width of the grid specimen, and the mechanical properties of the grid material. A mechanism of soil-geogrid interaction is described and used to explain the results of the pull-out tests. A significant finding is that the selection of geogrid specimen dimensions for laboratory pull-out tests must take into account the strain to failure of the soil and the stiffness of the geogrid in order to properly represent the maximum pull-out stress that will be available in field applications.

This paper appears in Transportation Research Record No. 1188, Effects of Geosynthetics on Soil Properties and of Environment on Pavement Systems. 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

01413987

p. 48-55

1988

Transportation Research Record

0309047579

Figures (10) ; References (11) ; Tables (2)

Density; Geogrids; Geotextiles; Grain size (Geology); Machines; Mechanical properties; Overburdens; Pull out test; Sand

Interaction

Design; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I42: Soil Mechanics

TRIS, TRB, ATRI

Oct 31 1989 12:00AM

• EVALUATION OF SOIL-REINFORCEMENT INTERACTION BY LARGE-SCALE PULL-OUT TESTS
• GEOGRID REINFORCEMENT OF GRANULAR BASES IN FLEXIBLE PAVEMENTS
• LARGE-SCALE MODEL TESTS OF GEOCOMPOSITE MATTRESSES OVER PEAT SUBGRADES
• SLOPE STEEPNESS FACTOR FOR PREDICTING EROSION ON HIGHWAY SLOPES
• WHY ALL IMPORTANT PAVEMENTS SHOULD BE WELL DRAINED