Unbound base layers deform under load and contribute to the accumulation
of ruts. Therefore, this study was concerned with studying the effect of
reinforcement on the behavior of unbound granular material that used in flexible
pavement layers as a base course. Two main geothynthetic types were used in
this study. These types were woven geotextile and geogrid. Two geogrid opening
sizes were used (GR105 and GR420). The experimental work was designed to
evaluate plastic and elastic deformation and the modulus of elasticity of
reinforced limestone base course. This experimental work carried out utilizing
the static plate loading test in a test-model which simulated the subgrade and
base course of the flexible pavement. The effect of base thickness, geogrid
depth, modulus of elasticity of base course and geogrid edges fixation on the
deformation characteristics were studied. Furthermore, the effect of loading
time on the accumulated deformation was investigated. Moreover, the effect of
reinforcement on base thickness saving (BCR) and deformation reduction ratio
(DRR) was studied. A great influence for reinforcement especially with geogrid
(GR420) was observed in improving the deformation characteristics of base
course.
Cite this paper
El-Maaty, A. E. A. (2016). Improving Rutting Resistance of Flexible Pavement Using Geosynthetics. Open Access Library Journal, 3, e2655. doi: http://dx.doi.org/10.4236/oalib.1102655.
Appea, A. and
Al-Qadi, I. (2000) Assessment of FWD Deflection Data in Stabilized Flexible
Pavements. The 79thAnnual
Transportation Research Board Meeting, Washington DC, January 2000, 19-25.
Tingle, S. and Jersey, S.R. (2005) Cyclic Plate Load Testing of Geosynthetic-Reinforced Unbound
Aggregate Roads. The 84th Annual Transportation Research Board
Meeting, Washington DC, January 2005, 60-69. http://dx.doi.org/10.3141/1936-08
Leng, J. and
Gabr, M.A. (2005) Numerical Analysis of Stress-Deformation Response in Reinforced
Unpaved Road Sections. Thomas Telford
Journals, Geosynthetics International,
12, 111-119. http://dx.doi.org/10.1680/gein.2005.12.2.111
Mirafi
Construction Products (2004) Geosynthetic Reinforcement of the Aggregate Base/Subbase Courses
of Pavement Structures. Revision 2. www.mirafi.com
Gurung, N. (2003) A Laboratory Study on the Tensile Response of Unbound Granular
Base Road Pavement Model Using Geosynthetics. Geotextiles and Geomembranes, 21, 59-68. http://dx.doi.org/10.1016/S0266-1144(02)00033-X
Sina, M.M. and Mohamed, R.K. (2014) Improving Rutting Resistance of Pavement Structures Using Geosynthetics:
An Overview. The Scientific World Journal, Hindawi Publishing Corporation, Cairo.
Han,
J., Zhang, Y. and Parsons, R. (2011) Quantifying the Influence of Geosynthetics
on Performance of Reinforced Granular Bases in Laboratory. Geotechnical Engineering, 1, 75.
Kim, Y. and Park, T.-S. (2013) Reinforcement of Recycled
Foamed Asphalt Using Short Polypropylene Fibers. Advances in Materials Science and Engineering, 2012, Article ID: 903236. http://dx.doi.org/10.1155/2013/903236
Bertuliene, L., Oginskas, R. and Bulevicius, M. (2011) Research of Rut Depth in Asphalt
Pavements Reinforced with Geosynthetic Materials. Proceedings of the 8th
International Conference Environmental Engineering, 19-20 May 2011,
Vilnius, 1039-1045.
Helstrom, C.L., Humphrey, D.N. and Hayden, S.A. (2007) Geogrid Reinforced Pavement Structure in a Cold Region. Proceedings of the 13th International Conference on Cold Regions
Engineering, Orono, July 2007, 1-12.
