Behavior of Fabric‐Versus Fiber‐Reinforced Sand
Publication: Journal of Geotechnical Engineering
Volume 112, Issue 8
Abstract
Triaxial compression tests were run to compare the stress‐strain response of a sand reinforced with continuous, oriented fabric layers as opposed to randomly distributed, discrete fibers. The influence of various test parameters such as amount of reinforcement, confining stress, and inclusion modulus and surface friction were also investigated. Test results showed that both types of reinforcement improved strength, increased the axial strain at failure, and in most cases reduced post‐peak loss of strength. At very low strains fabric inclusions resulted in a loss of compressive stiffness. This effect was not observed in the case of fiber reinforcement. The existence of a critical confining stress was common to both systems. Failure envelopes for reinforced sand paralleled the unreinforced envelope above this stress. Strength increase was generally proportional to the amount of reinforcement, i.e., the number of fabric layers or weight fraction of fibers, up to some limiting content. Thereafter, the strength increase approached an asymptotic upper limit. Fiber‐reinforced samples failed along a classic planar shear plane, whereas fabric‐reinforced sand failed by bulging between layers.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Andersland, O. B., and Khattak, A. S., “Shear Strength of Kaolinite/Fiber Soil Mixtures,” Proceedings, International Conference on Soil Reinforcement, Vol. I, Paris, France, 1979, pp. 11–16.
2.
Broms, B. B., “Triaxial Tests with Fabric‐Reinforced Soil,” Proceedings, International Conference on Use of Fabrics in Geotechnics, L'Ecole Nationale des Ponts et Chaussees, Vol. III, Paris, France, 1977, pp. 129–133.
3.
Giroud, J. P., “Geotextiles and Geomembranes,” Geotextiles and Geomembranes Journal, Vol. 1, No. 2, Feb., 1984, pp. 5–40.
4.
Gray, D. H., and Ohashi, H., “Mechanics of Fiber Reinforcement in Sand,” Journal of the Geotechnical Engineering Division, ASCE, Vol. 109, No. GT3, Paper 17780, Mar., 1983, pp. 335–353.
5.
Gray, D. H., Athanasopoulos, G., and Ohashi, H., “Internal/External Fabric Reinforcement of Sand,” Proceedings, 2nd International Conference on Geotextiles, Vol. III, Las Vegas, Nev., 1982, pp. 611–616.
6.
Hoare, D. J., and “Laboratory Study of Granular Soils Reinforced with Randomly Oriented Discrete Fibers,” Proceedings, International Conference on the Use of Fabrics in Geotechnics, L'Ecole Nationale des Ponts et Chaussees, Vol. I, Paris, France, 1977, pp. 47–52.
7.
Holtz, R. D., and Broms, B. B., “Wall Reinforced by Fabrics,” Proceedings, International Conference on the Use of Fabrics in Geotechnics, L'Ecole des Ponts et Chaussees, Vol. I, Paris, France, 1977, pp. 113–117.
8.
Hughes, J. M., and Whithers, N. J., “Reinforcement of Soft Cohesive Soil with Stone Columns,” Grand Engineering, Vol. 7, 1974, pp. 42–49.
9.
Jewell, R. A., “Some Factors which Influence the Shear Strength of Reinforced Sand,” CUED/D‐Soils/TR85, Cambridge University Engineering Department, Cambridge Univ., England, 1980.
10.
Koerner, R. M., and Welsh, J. P., Construction and Geotechnical Engineering Using Synthetic Fabrics, Wiley and Sons, N.Y., 1980, 265 pp.
11.
Lee, K. L., Adams, B. D., and Vagneron, J. J., “Reinforced Earth Retaining Walls,” Journal of Soil Mechanics and Foundations Division, ASCE, Vol. 99, SM10, Oct., 1973, pp. 745–764.
12.
Madhav, M. R., and Vitkar, P. P., “Strip Footing on Weak Clay Stabilized with a Granular Trench or Pile,” Canadian Geotechnical Journal, Vol. 15, 1978, pp. 605–609.
13.
McGown, A., and Andrawes, K. Z., “The Influence of Non‐Woven Fabric Inclusions on the Stress‐Strain Behavior of a Soil Mass,” Proceedings, International Conference on the Use of Fabrics in Geotechnics, L'Ecole des Ponts et Chaussees, Vol. I, Paris, France, 1977, pp. 161–166.
14.
McGown, A., Andrawes, K. Z., and Al‐Hasani, M. M., “Effect of Inclusion Properties on the Behavior of Sand,” Geotechnique, Vol. 28, No. 3, Mar., 1978, pp. 327–346.
15.
Mitchell, J. K., and Schlosser, F., “Mechanism, Behavior and Design Methods for Earth Reinforcement,” General Report, Proceedings, International Conference on Soil Reinforcement, Vol. I, Paris, France, 1979, pp. 25–74.
16.
Namaan, T., Moavenzadah, F., and McGarry, F., “Probabilistic Analysis of Fiber Reinforced Concrete,” Journal of Engineering Mechanics Division, ASCE, Vol. 100, No. EM2, Feb., 1974, pp. 397–413.
17.
Schlosser, F., and Long, N. T., “Recent Results in French Research on Reinforced Earth,” Journal of the Construction Division, ASCE, Vol. 100, No. CO3, Mar., 1974, pp. 223–237.
18.
Waldron, L. J., “Shear Resistance of Root‐Permeated Homogeneous and Stratified Soil,” Soil Science Society of America Proceedings, Vol. 41, 1977, pp. 843–849.
19.
Yang, Z., “Strength and Deformation Characteristics of Reinforced Sand,” dissertation presented to the University of California, at Los Angeles, Calif., in 1972, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
Information & Authors
Information
Published In
Copyright
Copyright © 1986 ASCE.
History
Published online: Aug 1, 1986
Published in print: Aug 1986
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.