1. Narejo D. B., "Opening size recommendations for separation geotextiles used in pavements", Geotextiles and Geomembranes Vol. 21 (4) (2003) 257-264. 2. Palmeira E. M., Gardoni M. G., "Drainage and filtration properties of non-woven geotextiles under confinement using different experimental techniques", Geotextiles and Geomembranes Vol. 20 (2) (2002) 97-115. 3. Faure Y. H., Baudoin A., Pierson P., Ple O., "A contribution for predicting geotextile clogging during filtration of suspended solids", Geotextiles and Geomembranes Vol. 24 (1) (2006) 11-20. 4. Chai J. C., Miura N., Nomura T., "Effect of hydraulic radius on long-term drainage capacity of geosynthetics drains", Geotextiles and Geomembranes Vol. 22 (2004) 3-16. 5. Moghaddas Tafreshi S. N., Dawson A. R., "Comparison of bearing capacity of a strip footing on sand with geocell and with planar forms of geotextile reinforcement", Geotextiles and Geomembranes Vol. 28 (1) (2010) 72-84. 6. Moghaddas Tafreshi S. N., Dawson A. R., "Behaviour of footings on reinforced sand subjected to repeated loading–Comparing use of 3D and planar geotextile", Geotextiles and Geomembranes Vol. 28 (5) (2010) 434-447. 7. Moghaddas Tafreshi, S. N., Sharifi, P., Dawson, A. R., "Performance of circular footings on sand by use of multiple-geocell or-planar geotextile reinforcing layers", Soils and Foundations Vol. 56 (6) (2016) 984-997. 8. Lee K. M., Manjunath V. R., "Soil-geotextile interface friction by direct shear tests", Canadian Geotechnical Journal Vol. 37 (1) (2000) 238-252. 9. Abdi M. R., Arjomand M. A., "Pullout tests conducted on clay reinforced with geogrid encapsulated in thin layers of sand", Geotextiles and Geomembranes Vol. 29 (6) (2011) 588-595. 10. Ghazavi M., Ghaffari J., "Experimental investigation of time-dependent effect on shear strength parameters of sand-geotextile interface", Iranian Journal of Science and Technology. Transactions of Civil Engineering, Vol. 37 (C1) (2013) 97-109. 11. Abdi M. R., Etefagh M., "The Effect of Soil Particle Size and Reinforcement Aperture Size on the Soil-Geogrid Interaction", Experimental Research in Civil Engineering Vol. 1(1) (2014) 57-64. (In Persian). 12. Abdi M. R., Zandieh A. R., "Experimental and numerical analysis of large scale pull out tests conducted on clays reinforced with geogrids encapsulated with coarse material", Geotextiles and Geomembranes Vol. 42(5) (2014) 494-504. 13. Abdi, M. R., Mirzaeifar, H., "Experimental and PIV evaluation of grain size and distribution on soil–geogrid interactions in pullout test. Soils and Foundations 57 (2017) 1046-1059. 14. Jewell R. A., Millilgan G. W. E., Sarsby R. W., Dubois D., "Interaction Between Soil and Geogrids", Proc. Sympon Polymer Grid Reinforcement in Civil Engineering, Science and Engineering Research Council and Netlon Limited (1984) 18-30. 15. Cazzuffi D., Picarelli L., Ricciuti A., Rimoldi P., "Laboratory investigations on the shear strength of geogrid reinforced soils", In Geosynthetic Soil Reinforcement Testing Procedures, ASTM Spec. Tech. Publ. 1190, (1993) 119-137. 16. Liu C. N., Ho Y. H., Huang J. W., "Large scale direct shear tests of soil/PET-yarn geogrid interfaces", Geotextiles and Geomembranes Vol. 27(1) (2009) 19-30. 17. Sayeed M. M. A., Janaki Ramaiah B., Amit Rawal, "Interface shear characteristics of jute/polypropylene hybrid nonwoven geotextiles and sand using large size direct shear test", Geotextiles and Geomembranes Vol. 42(1) (2014) 63-68. 18. Punetha P., Mohanty P. Samanta P., "Microstructural investigation on mechanical behavior of soil-geosynthetic interface in direct shear test", Geotextiles and Geomembranes Vol. 45 (3) (2017) 197-210. 19. Cerato A. B., Lutenegger A. J., "Specimen size and scale effects of direct shear box tests of sands", Geotechnical Testing Journal Vol. 29 (6) (2006) 1-10 20. ASTM D3080, "Standard test method for direct shear test of soils under consolidated drained conditions", West Conshohocken, PA: ASTM International (2004). 21. ASTM D5321, "Standard test method for determining the coefficient of soil and geosynthetic or geosynthetic and geosynthetic friction by the direct shear method", West Conshohocken, PA: ASTM International (2008). 22. ASTM D4253, "Standard test methods for maximum index density and unit weight of soils using a vibratory table", West Conshohocken, PA: ASTM International (2016). 23. ASTM D4254, "Standard test methods for minimum index density and unit weight of soils and calculation of relative density", West Conshohocken, PA: ASTM International (2016). 24. ASTM D422, "Standard test method for particle-size analysis of soils", West Conshohocken, PA: ASTM International (2007). 25. ASTM D2487, "Standard practice for classification of soils for engineering purposes (unified soil classification system)", West Conshohocken, PA: ASTM International (2011). 26. http:// www.sefidbaft.com 27. Richards E. A., Scott J. D., "Soil geotextile frictional properties", Proc. 2nd., Canadian Sym. On Geotextile and Geomembrane", Canadian Geotechnical Society, Edmonton. Alberta (1985) 13-24. 28. Lopes M. L., Silvano, R., "Soil/geotextile interface behavior in direct shear and pullout movements", Geotechnical and Geological Engineering, 28 (6), (2010) 791-804. 29. Abdi M. R., Mamani K., "Comparison of the Effect of Degree of Compaction (Relative Density) and Grading on Sand-Geogrid and Sand-Geotextile Interaction", 10th International Congress on Civil Engineering, Tabriz University (2015). (In Persian) 30. Jotisankasa, A., Rurgchaisri, N., "Shear strength of interfaces between unsaturated soils and composite geotextile with polyester yarn reinforcement", Geotextiles and Geomembranes, 46(3) (2018) 338-353. 31. Markou, I. N., "A study on geotextile-sand interface behavior based on direct shear and triaxial compression tests", International Journal if Geosynthetics and Ground Engineering, 4 (1) (2018) 8-16. 32. Palmeira E. M. "Soil-geosynthetic interaction: Modelling and analysis", Geotextiles and Geomembranes Vol. 27(5) (2009) 368-390. 33. Tatlisoz N., Edil T. B., Benson C. H., "Interaction between reinforcing geosynthetics and soil-tire chip mixtures", Journal of Geotechnical and Geoenvironmental Engineering Vol. 124(11) (1998) 1109-1119. 34. Abu-Farsakh M., Coronel J., Tao M., "Effect of soil moisture content and dry density on cohesive soil–geosynthetic interactions using large direct shear tests", Journal of Materials in Civil Engineering Vol. 19(7) (2007) 540-549. 35. Abdi M. R., Sadrnejad S. A., Arjomand M. A., "Clay reinforcement using geogrid embedded in thin layers of sand", International Journal of Civil Engineering Vol. 7(4) (2009) 224-235. 36. Abdi M. R., Sadrnejad A., Arjomand M. A., "Strength enhancement of clay by encapsulating geogrids in thin layers of sand", Geotextiles and Geomembranes Vol. 27 (6) (2009) 447-455. 37. Athanasopoulos G. A., "Results of direct shear tests on geotextile reinforced cohesive soil", Geotextiles and Geomembranes Vol. 14(11) (1996) 619-644. 38. Chenggang B., "Study on the interaction behavior of geosynthetics and soil in China", Ningbo Institute of Technology, Zhejiang University, China (2004) 104-115. 39. Liu C. N., Zornberg J. G., Chen T. C., Ho Y. H., Lin B. H., "Behavior of geogrid-sand interface in direct shear mode", Journal of Geotechnical and Geoenvironmental Engineering Vol. 135 (12) (2009) 1863-1871. 40. Athanasopoulos G. A., "Effect of particle size on the mechanical behaviour of sand-geotextile composites", Geotextiles and Geomembranes Vol. 12 (3) (1993) 255-273. 41. Tuna S. C., Altun S., "Mechanical behavior of sand-geotextile interface", Scientia Iranica Vol. 19 (4) (2012) 1044-1051. 42. Ferreira F. B., Vieira C. S., Lopes M., "Direct shear behavior of residual soil–geosynthetic interfaces-influence of soil moisture content, soil density and geosynthetic type", Geosynthetics International Vol. 22 (3) (2015) 257-272. 43. Mosallanezhad M, Alfaro M. C., Hataf N., Taghavi S. S., "Performance of the new reinforcement system in increasing shear strength of typical geogrid interface with soil", Geotextiles and Geomembranes, 44(3), (2016) 457-462. 44. Makkar F.M., Chandrakaran S., Sankar N., "Performance of 3-D geogrid reinforced sand under direct shera mode. International Journal of Geotechnical Engineering (2017) 1-9. 45. Abdi M.R., Safdari Seh Gonbad M., "Enhancement of soil geogrid interactions in direct shear mode using attached elements as anchors", European Journal of Environmental and Civil Engineering (2018) 1-19.