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Table 1 Design Approaches and Procedures for Base/Sub Base ReinforcementDeveloperGeosynthetic TypeApplicabilityDistress mode and Design FormatEmpirical SupportMaximum Range ofImprovement
Giroud andNoiray (1981)
GeotextileEmpirical method75 mm Rut depthQuasistaticanalysis
30% to 50% reductionin base coursethickness
Penner et al.(1985)
Specic geogrid Based on C.B.R4.3 to 5.7%
20 mm Rut depth/ Equation and chart
Lab Test
30% to 50% reductionin base coursethickness
Burd andHoulsby (1986)GeneticGeosyntheticIsotropicelastoplasticsurfacedeformation/FE M ComputerProgrameF.E.MImprovement after4 mm surfacedeformation
Barksdale et al.(1989)
Genetic Geosynthetic
Isotropicelastoplasticsurfacedeformation/
FE M ComputerPrograme
Field Result4% to 18% reductionbase thickness
Barksdale et al.(1989)
GeogridC.B.R 2.4% Verticaldeformation charts,
computer programe
Field Test4% to 18% reductionin base coursethickness
Webster (1993)SpecificGeogrid
Based on C.B.R 3to 8%
Rut depth (25 mm)/ Design charts
Field Test BCR = 5% to 45%
Tensar (1996)SpecificGeogrid
Based on C.B.R1.9 to 8%20 to 30 mm rutdepth/equations,charts, computerprograme
Lab & test trackcorrelate to fieldtest
Traffic Benefit Ratio(TBR) = 1.5 to 10
J.G. Collin, T.C.Kinney (1996)
GeogridC.B.R 1 to 8%Surface ruttingFull Scale Lab.test
Traffic Benefit Ratio(TBR) = 2 to 10%
Akzo-Nobel(1998)
Specific GG-GTComposite
Not statedBearing capacity/Equation & charts
Plate Load Test(Meyer 7 Elias,1999)
BCR = 32% to 56%
Perkins S.W.(1999)
Geogrid - --Permanent surfacedeformation
Full Scale Lab.test
At least 30% reductionin base coursethickness
Giroud & Han(2004)
GeogridTheoretical designmethod
allowable rut depth,e.g. 75 mm.
Empirical testcalibrated withfield test
Up to 30% reductionin base coursethickness
Rudolf Hufenus,Rueegger et. at(2005)
GeogridC.B.R 1 to 4% Rut depthFull scale Fieldtest
Up to 30% reductionin base coursethickness
Bassam Saadand Hani Mitri(2006)
Geogrid -Surfacedeformation
3D F.E.MReduction of Ruttingstrain up to 16 to 34%
Imad L. Al-Qadiet.at (2010)
Geogrid C.B.R 4%Surface ruttingFull scale testReduction inpavement response upto 23-31%