Parameters Controlling Tensile and Compressive Strength of Fiber-Reinforced Cemented Soil
Publication: Journal of Materials in Civil Engineering
Volume 25, Issue 10
Abstract
Enhancement of local soils with fibers and cement for the construction of stabilized pavement bases, canal lining, and support layers for shallow foundations shows great economical and environmental advantages, avoiding the use of borrow materials from elsewhere, in addition to the need of a spoil area. In previous studies, a unique dosage methodology for cemented soils has been established based on rational criteria in which the porosity-to-cement ratio plays a fundamental role in the assessment of the target unconfined compressive strength (). The present paper extends previous work by quantifying the influence of the amount of cement, the porosity, and the porosity-to-cement ratio in an assessment on tensile strength () and compressive strength of a fiber-reinforced artificially cemented sand, in addition to the evaluation of the relationship. A program of splitting tensile tests and unconfined compression tests considering four distinct dry densities and five cement contents, varying from 1–7%, was carried out in the research reported in this paper. The results show that a power function adapts and values well with increasing cement content and reducing porosity of the compacted mixture. The porosity-to-cement ratio is an appropriate parameter to assess both tensile strength and unconfined compressive strength of the fiber-reinforced sand/cement mixture studied. Finally, the relationship is unique for the fiber-reinforced sand/cement studied, being independent of the porosity-to-cement ratio.
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Acknowledgments
The writers express their gratitude to the Brazilian Research Council/Brazilian Ministry of Science and Technology (CNPq/MCT) (projects PNPD, Produtividade em Pesquisa, and INCT-REAGEO) for their financial support to the writers’ research group.
References
ASTM. (2009). “Standard specification for portland cement.” ASTM C150-09, Philadelphia.
Brazilian Standard Association. (1980). “Mortar and concrete—Test method for compressive strength of cylindrical specimens.” NBR 5739, Rio de Janeiro, Brazil (in Portuguese).
Brazilian Standard Association. (1983). “Mortar and concrete—Test method for splitting tensile strength of cylindrical specimens.” NBR 7222, Rio de Janeiro, Brazil (in Portuguese).
Chandler, R. J., Crilly, M. S., and Montgomery-Smith, G. (1992). “A low cost method of assessing clay desiccation for low-rise buildings.” Proc. Inst. Civ. Eng., 92(2), 82–89.
Chang, T. S., and Woods, R. D. (1992). “Effect of particle contact bond on shear modulus.” J. Geotech. Eng., 118(8), 1216–1233.
Clough, G. W., Sitar, N., Bachus, R. C., and Rad, N. S. (1981). “Cemented sands under static loading.” J. Geotech. Engrg. Div., 107(6), 799–817.
Consoli, N. C., Casagrande, M. D. T., and Coop, M. R. (2007a). “Performance of fibre-reinforced sand at large shear strains.” Géotechnique, 57(9), 751–756.
Consoli, N. C., Casagrande, M. D. T., Thomé, A., Rosa, F. D., and Fahey, M. (2009a). “Effect of relative density on plate tests on fibre-reinforced sand.” Géotechnique, 59(5), 471–476.
Consoli, N. C., Cruz, R. C., Consoli, B. S., and Maghous, S. (2012a). “Failure envelope of artificially cemented sand.” Géotechnique, 62(6), 543–547.
Consoli, N. C., Cruz, R. C., Viana da Fonseca, A., Coop, M. R. (2012b). “Influence of cement-voids ratio on stress-dilatancy behavior of artificially cemented sand.” J. Geotech. Geoenviron. Eng., 138(1), 100–109.
Consoli, N. C., Foppa, D., Festugato, L., and Heineck, K. S. (2007b). “Key parameters for strength control of artificially cemented soils.” J. Geotech. Geoenviron. Eng., 133(2), 197–205.
Consoli, N. C., Heineck, K. S., Casagrande, M. D. T., and Coop, M. R. (2007c). “Shear strength behavior of fiber-reinforced sand considering triaxial tests under distinct stress paths.” J. Geotech. Geoenviron. Eng., 133(11), 1466–1469.
Consoli, N. C., Montardo, J. P., Prietto, P. D. M., and Pasa, G. S. (2002). “Engineering behavior of a sand reinforced with plastic waste.” J. Geotech. Geoenviron. Eng., 128(6), 462–472.
Consoli, N. C., Rosa, F. D., and Fonini, A. (2009b). “Plate load tests on cemented soil layers overlaying weaker soil.” J. Geotech. Geoenviron. Eng., 135(12), 1846–1856.
Consoli, N. C., Rotta, G. V., and Prietto, P. D. M. (2006). “Yielding-compressibility-strength relationship for an artificially cemented soil cured under stress.” Géotechnique, 56(1), 69–72.
Consoli, N. C., Vendruscolo, M. A., Fonini, A., and Rosa, D. F. (2009c). “Fiber reinforcement effects on sand considering a wide cementation range.” Geotext. Geomembranes, 27(3), 196–203.
Consoli, N. C., Vendruscolo, M. A., and Prietto, P. D. M. (2003). “Behavior of plate load tests on soil layers improved with cement and fiber.” J. Geotech. Geoenviron. Eng., 129(1), 96–101.
Consoli, N. C., Viana da Fonseca, A., Cruz, R. C., and Heineck, K. S. (2009d). “Fundamental parameters for the stiffness and strength control of artificially cemented sand.” J. Geotech. Geoenviron. Eng., 135(9), 1347–1353.
Consoli, N. C., Viana da Fonseca, A., Silva, S. R., Cruz, R. C., and Fonini, A. (2012c). “Parameters controlling stiffness and strength of artificially cemented soils.” Géotechnique, 62(2), 177–183.
Estabragh, A. R., Namdar, P., and Javadi, A. A. (2012). “Behavior of cement-stabilized clay reinforced with nylon fiber.” Geosynth. Int., 19(1), 85–92.
Fatahi, B., Khabbaz, H., and Fatahi, B. (2012). “Mechanical characteristics of soft clay treated with fibre and cement.” Geosynth. Int., 19(3), 252–262.
Ingles, O. G., and Metcalf, J. B. (1972). Soil stabilization–Principles and practice, Butterworths, London.
Marinho, F. A. M. (1995). “Suction measurement through filter paper technique.” Proc., Unsaturated Soils Seminar, Federal Univ. of Rio Grande do Sul, Porto Alegre, Brazil, 111–125 (in Portuguese).
Mitchell, J. K. (1981). “Soil improvement—State-of-the-art report.” Proc., Int. Conf. on Soil Mechanics and Foundation Engineering, Int. Society of Soil Mechanics and Foundation Engineering, London, 509–565.
Moore, R. K., Kennedy, T. W., and Hudson, W. R. (1970). “Factors affecting the tensile strength of cement-treated materials.”, Transportation Research Board, Washington, DC, 64–80.
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© 2013 American Society of Civil Engineers.
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Received: Jan 6, 2012
Accepted: Jul 13, 2012
Published online: Aug 27, 2012
Discussion open until: Jan 27, 2013
Published in print: Oct 1, 2013
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