Investigation on the Effect of Geogrid Reinforcement on the Strength Parameters of Subgrade

Document Type : Original Article

Authors

Abstract

In last decade, Geosynthetics as polimerical products have been applied for various use in civil engineering such as reinforcement, separation, filtration, Drainage, Fluid barrier and Protection. Subgrade soil and its properties are very important in the design of road pavement structure and Its main function is to give acceptable base to the pavement from underneath. Since Pavements constructed over soft subgrade having poor strength parameters such as CBR leading to more thickness of the pavement, successful use of geosynthetics is ensured in a given geotechnical application. As it is well-matched and effective in improving the soil properties when appropriately used. A geogrid as a geosynthetic material containing connected parallel sets of tensile ribs with apertures of sufficient size to allow strike-through of surrounding soil, stone, or other geotechnical material is a common form of subgrade reinforcement. Geogrids used in subgrade as a part of road pavement, has primary functions of geosynthetics which are separation and reinforcement. Geogrid have been successfully used to provide a construction platform over subgrades. Due to recent studies, lateral restraint, improved bearing capacity and tensioned membrane effect  are reinforcement mechanisms which have been identified the use of geogrids to reinforce pavement materials. This study investigated the behavior of reinforced subgrade with geogrid and the effect of reinforcement on soil properties. it is considered various research on geogrid use in pavement. It is shown that the composite of geogrid and soil can reduce the desired thickness of aggragate layer.  It is also mentioned that the use of geogrid in pavement system will affect the cohesion of subgrade and improve the mohr-coloumb strength parameter of the soil.
 
 

Keywords

References

-    شفابخش، غ.ع.، (1390) "تسلیح خاکریز و بستر راهها با استفاده از ژئوگرید"، پژوهشکده حمل و نقل.
 
-    شه­کلاهی، الف.ر.، (1390) "معرفی و تاریخچه محصولات ژئوسنتتیک"، مجله ژئوسنتتیک صص. 15-11.
 
-  گراییلی افرا، م.، (1389) "ژئوگرید و کاربرد آن در
پروژه­ها"، فناوری حمل و نقل صص. 65-60.
 
-    صدریان­زاده، م.، (1383) معرفی ژئوسنتتیک­ها و کاربرد آن­ها در مهندسی عمران، یازدهمین کنفرانس دانشجویان عمران سراسر کشور.
 
-    ظهیر کاشانی، ح.ر.، خداوردیان، ه.، بهنیا، س.، (1389)، معرفی ژئوسنتتیک­ها و کاربرد آن­ها در مهندسی عمران، کنفرانس مهندسی عمران دانشگاه آزاد اسلامی واحد
نجف آباد.
 
-  Abu Farsakh, M. Y.,and Qiming, C. (2010) "Evaluation of geogrid base reinforcement in flexible pavement using cyclic plate load testing", International Journal of Pavement Engineering, 12 (3), pp.275-287.
-  Al-Qadi, I. L., Brandon, T. L., and Bhutta, A. (1997) "Geosynthetic Stabilized Flexible Pavements, Proceedings of Geosynthetics", 97, IFAI, Vol. 2, Long Beach, California,
pp. 647-662.
-  Al-Qadi, I. L., Dessouky, S., Tutumluer, E. and Kwon, J. (2010) "geogrid mechanism in low volume flexible pavements: accelelated testing of full scale heavily instumented pavement sections", International Journal of Pavement Engineering, 12 (2), pp.121-135.
-  ASTM D4439. (2006), "Standard Terminology for Geosynthetics", Annual Book of ASTM Standards, Vol. 4.13, ASTM International, West Conshohocken, PA,
pp. 19-23.
-  ASTM D1557-02. (2002), "Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort".
-  ASTM D1883-99. (1999), "Standard Test Method for CBR (California Bearing Ratio) of Laboratory-Compacted Soil".
-  ASTM D2850 – 03. (2003) "Standard Test Method for Unconsolidated Undrained Triaxial Compression Test on Cohesive Soils".
-  Basset, R.H., and Last, N.C. (1978) "Reinforcing earth below footings  and  embankments, Proe", symposium on earth reinforcement, Pittsburgh, pp. 202-231.
 
-  Brown, S. F., Brodrick, B. V., and Hughes, D. A. B. (1984). "Tensar Reinforcement of Asphalt: Laboratory Studies Polymer Grid Reinforcement", A Conference Sponsored by SERC and Netlon, Ltd, London, England,
pp. 158-165.
-  Cancelli A., M. F. (1996) "Full scale laboratory testing on geosynthetics reinforced paved roads. on Earth Reinforcement",
pp. 573-578.
-  Carroll, R.G., Walls, J.C. and Haas, R. (1997) "Granular base reinforcement of flexible pavements using geogrids", Proceeding of Geosynthetics ’87, IFAI, New Orleans,
pp. 46-57.
 
-  Chang, F. W. K. (1990) "Permanent Deformation Resistance of Granular Layers in Pavements",   Ph.D. Thesis, University of Nottingham, United Kingdom.
-  Dondi, G. (1994) "Three-dimensional finite element analysis of a reinforced paved road", 5th international conference on geotextile, singapore, 1, pp. 95-100.
-  Douglas, R. A. (1993), "Stiffness’s of Geosynthetic Built Unpaved Road Structures: Experimental Program, Analysis and Results", Proceedings of Geosynthetics ’93, IFAI, Vol. 1, Vancouver, British Columbia, Canada, pp. 21-34.
-  Fakharian, K. & Attar, I. H. (2007), "Static and seismic numerical modeling of geosynthetic-reinforced soil segmental bridge abutments ", Geosynthetics International 14, No. 4, pp.228-243.
-  Fukuoka, M. )1988), “Earth ReinforcementWest and East", Proceeding of the International Geotechnical Symposium on Theory and Practice of Earth Reinforcement, pp.33-47.
-  Gupta, R.,and  Zornberg, J. (2005), "quantifying the benefits for using geosynthetics in unbound base course of pavement in high PI clays", the Graduate Engineering Council. Austin: University of Texas at Austin.
-  Gupta, R., and Zornberg, J. G. (2009), "reinforcement of pavements over expansive clay subgrades", the 17th International Conference on Soil Mechanics and Geotechnical Engineering, Alexandria,egypt, pp. 765-768.
-  Haas, R. (1984) "Structural Behavior of Tensar Reinforced Pavements and Some Field Applications, Polymer Grid Reinforcement", A Conference Sponsored by SERC and Netlon, Ltd., Thomas Telford, London, England, pp. 166-170.
 
-  Indraratna, B., Khabbaz, H., Salim, W., Christie, D., (2006), Geotechnical properties of ballast and the role of geosynthetics in rail track stabilization, Ground Improvement, 10, No. 3, pp.91-101.
-  Kamel, M. A., Satish, C., and Kumar, P. (2004), "behavoir of subgrade soil reinforced with geogrid", the international journal of pavement engineering , 5 (4), pp.201-209.
-  Nishigata, Tatsuaki and Nishida, Kazuhiko, (1995) Journal of the Society of Materials Science, Japan, 44 (503), pp.1011-1014. 
-  Pandy, S., Ramachandra, R.,and Devesh, T. (2012), "effect of geogrid reinforcement on critical responses of bituminous pavements", 25th ARRB conference, Perth, Australia,
pp. 1-13.
-  Perkins, S. a. (1997), "A synthesis and evaluation of geosynthetic-reinforced base layers in flexible pavements", Geosynthetics International , 4 (6), pp.549-604.
-  Retzlaff, J., Turczynski, K.,and Schwerdt, S. (2006), "The effect of geogrids under unbound sub base layers", the 8th International Conference on Geosynthetics. Yokohama.
-  Santoni, Rosa L., Smith, Carroll J., Tingle, J.S., and Webster, S.L. (2001), "Expedient Road Construction Over Soft Soils",  Technical Report TR-01-7, U.S. Army Engineer Research and Development Center, Waterways Experiment Station, Vicksburg, MS.
-  Saran, S. (2013), "Reinforced Soil and Its Engineering Applications (2 ed.) ", New Delhi: I K International Publishing House.
-  Shukla, S. K.,and Yin, J.-H. (2006), "Fundamental of geosynthetic engineering", London: Taylor and Francis group.
-  Singh, P.,and Gill, K. (june 2012), "CBR improvement of clayey soil with geogrid reinforcement", international journal of Emerging technology and advance engineering , 2 (6), pp.315-318.
-  The American Association of State Highway and Transportation Officials, A. A. (1993), AASHTO design of pavement structures.
-  Virgili, A., Canestrari, F., Grilli, A. and Santagata, F.A. (2009), "Repeated Load Test on Bituminous. Systems Reinforced by Geosynthetics", pp.187-195.
-
-  Vulcanhammer company. (2002), "use of geogrid in pavement construction".
-  Wathugala, G. B. (1996), "Numerical Simulation of Geosynthetic Reinforced", Transportation Research Record , 58-65.
-  Zhao, A.,and Foxworthy, P. T. (1999), "geogrid reinforcement of flexible pavements a practical perspective", Technical reference, GRID-DE-6 , pp.28-34.
-  Zornberg, J., Gupta, R.,and Ferreira, J. (2010), "Field performance of geosynthetic reinforced pavements over expansive", 9th International Conference on Geosynthetics. Brazil.
-  Zornberg, J., Gupta, R., Prozzi, J.,and Goehi, D. (2008), "case histories on geogrid reinforced pavements to mitigate problems associated with expansive subgrade soils", the first Pan American Geosynthetics Conference and Exhibition, Mexico., pp.983-992.
 
 
 
 

Files

Share

How to cite

Statistics