Funcionalidad y costo-beneficio del uso de geosintética como refuerzo de subgrado en el diseño de pavimento flexible
Resumen
La tensión vertical ejercida por los vehículos será alta en una carretera poblada y, para aumentar la capacidad de carga de las características de subrasante, se puede usar material geosintético. En el presente estudio, se usaron diferentes materiales geosintéticos, como geo-rejilla, geo-textil y geo-membrana, como elemento de refuerzo de subrasante dentro del molde CBR para comprender la mejora en subgrado para capas simples, dos y tres geosintéticas en el molde CBR. Los resultados muestran que hubo un aumento constante en el rodamiento con el aumento en varias capas y esta mejora también varió con el tipo de materiales geosintéticos. Entre los tres materiales geosintéticos, la geomalla muestra características CBR mejoradas. Finalmente, el análisis de costos y el diseño de pavimento flexible se llevaron a cabo para un número óptimo de capas para geomallas. Hubo una reducción de alrededor del 6.38% en el costo de construcción al usar la geomalla como miembro de refuerzo de subrasante.
Palabras clave
análisis de costos, estimación de rodamientos, fibra artificial, membranas, polímero reforzado con fibra, transporte por carretera
Citas
[1] J. Zornberg, “Advances in the use of geosynthetics in pavement design,” in Second National Conference on Geosynthetics, 2011, pp. 3-21.
[2] S. J. Webster, S. L. Alford, “Investigation of construction concepts for pavements across soft grounds,” Waterways Experiment Station, Vicksburg,Miss, 1978.
[3] J. A. Ramalho-Ortiago, and E. M. Palmiera, “Geotextile performance at an access road on soft ground near Rio de Janeiro,” Proc. 2nd Int. Conf. Geotext., vol. 1, pp. 353-358, 1982.
[4] Amara Loulizi, Imad L Al-Qadi, Salman A.Bhutta, Gerardo W.Flintsch, “Evaluation of Geosynthetics used as Separators,” Transportation Research Record, vol. 1687 (1), pp. 104-111, Jan. 1999. DOI: https://doi.org/10.3141/1687-12.
[5] K. Huntington, and G. Ksaibati, “Evaluation of geogrid reinforced granular base,” Transp. Res. Board, vol. 18 (1), pp. 22-28, 2000.
[6] J. Jenner,C,Paul, “Lesson learned from 20 years experience on geosynthetic reinforcement of pavement foundtions,” in 2nd European geosynthetics conference, 2000, pp. 421-426.
[7] X. Collin, J. G. Kinney, and T. C. Fu, “Full Scale Highway Load Test of Flexible pavements systems with geogrid reinforced base course,” ICE Virtual Libr., vol. 3 (4), pp. 537-549, 1996. DOI: https://doi.org/10.1680/gein.3.0074.
[8] F. Chan, R. D. Barksdale, and S. F. Brown, “Aggregate base reinforcement of surfaced pavements,” Geotextiles and Geomembranes, vol. 8 (3). pp. 165-189, Jan. 1989. DOI: https://doi.org/10.1016/0266-1144(89)90002-2.
[9] Q. C. Murrad, Y. Abu-Farskh, and I. Akond, “Evaluating the performance of geosynthetic-reinforced unpaved roads using plate load tests,” Int. J. Pavement Eng., vol. 17 (10), pp. 901-912, 2015.
[10] S. Bloise, and N. Ucciardo, “On site test of reinforced freeway with high strength geosynthetics,” Transp. Res. Board, vol. 1, pp. 369-371, 2000.
[11] R. Hufenus, R. Rueegger, R. Banjac, P. Mayor, S. M. Springman, and R. Brönnimann, “Full-scale field tests on geosynthetic reinforced unpaved roads on soft subgrade,” Geotextiles and Geomembranes, vol. 24 (1), pp. 21-37, Feb. 2006. DOI: https://doi.org/10.1016/j.geotexmem.2005.06.002.
[12] L. G. Palmeria, and E. M. Antunes, “Geosynthetic reinforced unpaved road performance after surface maintenance,” in 9th International COnference on Geosynthetics, 2010, pp. 1457-1460.
[13] U. Rajesh, S. Sajja, and V. K. Chakravarthi, “Studies on Engineering Performance of Geogrid Reinforced Soft Subgrade,” Transportation Research Procedia, vol. 17, pp. 164-173, 2016. DOI: https://doi.org/10.1016/j.trpro.2016.11.072.
[14] K. K. Babu, “Utilisation of Coir Geotextiles for Unpaved Roads and Embankments,” Doctoral Thesis, Cochin University of Science and Technology, Kochi, India, 2007.
[15] A. K. Ashmawy, and P. L. Bourdeau, “Response of a Woven and a Nonwoven geotxtile to monotonic and cyclic simple tension,” ICE Virtual Libr., vol. 3 (4), pp. 493-515, 1996.
[16] A. M. Elleboudy, N. M. Saleh, and A. G. Salama, “Assessment of geogrids in gravel roads under cyclic loading,” Alexandria Engineering Journal, vol. 56 (3), pp. 319-326, Sep. 2017. DOI: https://doi.org/10.1016/j.aej.2016.09.023.
[17] L. Suku, S. S. Prabhu, and G. L. Sivakumar Babu, “Effect of geogrid-reinforcement in granular bases under repeated loading,” Geotextiles and Geomembranes, vol. 45 (4), pp. 377-389, Aug. 2017. DOI: https://doi.org/10.1016/j.geotexmem.2017.04.008.
[18] M. T. Das. B. M. Shin, and E. C. Omar, “The bearing capacity of surface strip foundations on geo-grid reinforced sand and clay - a comparative study,” Geotech. Geol. Eng., vol. 12 (1), pp. 1-7, Mar. 1994. DOI: https://doi.org/10.1007/BF00425933.
[19] E. Cicek, E. Guler, and T. Yetimoglu, “Effect of reinforcement length for different geosynthetic reinforcements on strip footing on sand soil,” Soils and Foundations, vol. 55 (4), pp. 661-677, Aug. 2015. DOI: https://doi.org/10.1016/j.sandf.2015.06.001.
[20] M. Salih Keskin, and M. Laman, “Experimental and numerical studies of strip footings on geogrid-reinforced sand slope,” Arab. J. Sci. Eng., vol. 39 (3), pp. 1607-1619, Mar. 2014. DOI: https://doi.org/10.1007/s13369-013-0795-7.
[21] Bureau of Indian Standard, IS 2720 (Part III/I)-Determinationof Specific Gravity of Fine granied Soil, 1997, pp. 1-10.
[22] Bureau of Indian Standard, IS 2720 (Part V)-Determination of Liquid and Plastic Limit, 1995, pp. 1-17.
[23] Bureau of Indian Standard, IS 2720 (Part IV)-Grain size analysis, 1995, pp. 1-40.
[24] Bureau of Indian Standard, IS 2720 (Part X)-Determination of Unconfined Compressive Strength, 1995, pp. 1-8.
[25] Bureau of Indian Standard, IS 2720 (Part VII)-Methods of Test for Soils, Determination of Water Content-Dry Density Relation using Light Compaction, 2011, pp. 1-16.
[26] Bureau of Indian Standard, IS 2720 (Part 16)-Laboratory Determination of CBR, 1997, pp. 1-17.
[27] C. A. Adams, E. Apraku, and R. Opoku-boahen, “Effect of Triaxial Geogrid Reinforcement on CBR Strength of Natural Gravel Soil for Road Pavements,” J. Civ. Eng. Res., vol. 5 (2), pp. 45-51, 2015.
[28] S. A. Naeini, and R. Ziaie-Moayed, "Effect of plasticity index and reinforcement on the CBR value of soft clay," International Journal of Civil Engineering, vol. 7 (2). 2009, pp. 124-130.
[29] R. J. Fannin, and O. Sigurdsson, “Field Observations on Stabilization of Unpaved Roads with Geosynthetics,” J. Geotech. Eng., vol. 122 (7), pp. 544-553, 1996. DOI: https://doi.org/10.1061/(ASCE)0733-9410(1996)122:7(544).
[30] IRC 37, “Guidelines for the Design of Flexible Pavements,” Indian Roads Congr. New Delhi, 2012.