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High-pressure isotropic compression tests on fiber-reinforced cemented sand / Ana Paula Silva Dos Santos in Journal of geotechnical and geoenvironmental engineering, Vol. 136 N° 6 (Juin 2010) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 136 N° 6 (Juin 2010) . - pp. 885-890 Titre : High-pressure isotropic compression tests on fiber-reinforced cemented sand Type de document : texte imprimé Auteurs : Ana Paula Silva Dos Santos, Auteur ; Nilo Cesar Consoli, Auteur ; Karla Salvagni Heineck, Auteur Année de publication : 2010 Article en page(s) : pp. 885-890 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Isotropic  compression  Cemented  sand  Fiber  reinforcement Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : High-pressure isotropic compression tests were carried out on reconstituted sand samples that were reinforced with cement, randomly distributed fibers, or both, making comparisons with the unreinforced sand and conducting tests from a variety of initial specific volumes. The results indicated changes in the isotropic compression behavior of the sand due to the inclusion of fibers and/or cement. Cementitious bonds are sufficiently strong relative to the particles to allow the cemented samples to reach states outside the normal compression line (NCL) of the uncemented soil, but the effectiveness of cemented fiber-reinforced specimens is even larger due to the control of crack propagation in the cemented sand after the inclusion of fibers. Distinct NCLs were observed for the sand, fiber-reinforced sand, cemented sand, and fiber-reinforced cemented sand. Both fiber breakage and fiber extension were observed in fibers measured after testing indicating that fibers individually have worked under tension, even though in the macroscopic scale, isotropic compressive stresses were applied. Fiber reinforcement was found to reduce the particle breakage of both the uncemented and cemented sands. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v136/i6/p885_s1?isAuthorized=no [article] High-pressure isotropic compression tests on fiber-reinforced cemented sand [texte imprimé] / Ana Paula Silva Dos Santos, Auteur ; Nilo Cesar Consoli, Auteur ; Karla Salvagni Heineck, Auteur . - 2010 . - pp. 885-890. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 136 N° 6 (Juin 2010) . - pp. 885-890 Mots-clés : Isotropic  compression  Cemented  sand  Fiber  reinforcement Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : High-pressure isotropic compression tests were carried out on reconstituted sand samples that were reinforced with cement, randomly distributed fibers, or both, making comparisons with the unreinforced sand and conducting tests from a variety of initial specific volumes. The results indicated changes in the isotropic compression behavior of the sand due to the inclusion of fibers and/or cement. Cementitious bonds are sufficiently strong relative to the particles to allow the cemented samples to reach states outside the normal compression line (NCL) of the uncemented soil, but the effectiveness of cemented fiber-reinforced specimens is even larger due to the control of crack propagation in the cemented sand after the inclusion of fibers. Distinct NCLs were observed for the sand, fiber-reinforced sand, cemented sand, and fiber-reinforced cemented sand. Both fiber breakage and fiber extension were observed in fibers measured after testing indicating that fibers individually have worked under tension, even though in the macroscopic scale, isotropic compressive stresses were applied. Fiber reinforcement was found to reduce the particle breakage of both the uncemented and cemented sands. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v136/i6/p885_s1?isAuthorized=no