[1] Zornberg JG, Thompson N. Application guide and specifications for geotextiles in roadway applications. University of Texas at Austin. Center for Transportation Research; 2012 Feb 1.
[2] Alao and Olukayode Olawale. Use of Geosynthetics in Road Construction. Chapter One. 2011 Aug.
[3] Said, R., 1962. The Geology of Egypt: Elsevier, Amsterdam-New York, pp.1-377
[4] Conoco, (1987): Geological map of Egypt, -NF 36 NE Bernice- (scale 1:500,000). Conoco Inc., Cairo, Egypt.
[5] Griffiths, D.H., Barker, R.D., (1993): Two–dimensional resistivity imaging and modeling in areas of complex geology. J. Appl. Geophys. 29, 211–226105–117.
[6] Loke MH. RES2DINV ver. 3.3. for Windows 3.1 and 95-Rapid 2D resistivity and IP inversion using the least-squares method. Geotomo Software User’s Manual, Penang, Malaysia. 1998;35.
[7] AASHTO Designation T-254. (1986): American Association of State Highway and Transportation Officials '' AASHTO guide for design of Pavement structures''.
[8] Hogentogler CA, Terzaghi K. Interrelationship of load, road and subgrade. Public Roads. 1929 May;10(3):37-64.
[9] Atterberg, A. M. (1911): über die physikalische Bodenuntersuchung, und über die Plastizitat de Tone, International Mitteilungen für Bodenkunde, Verlag für Fachliteratur. G.m.b.H. Berlin, vol.1, p. 10–43.
[10] Burmister DM. Principles and techniques of soil identification. in Proceedings of Annual Highway Research Board Meeting. National Research Council. Washington, DC 1949 Dec (Vol. 29, pp. 402-434).
[11] Holtz WG, Gibbs HJ. Engineering properties of expansive clays. Transactions of the American Society of Civil Engineers. 1956 Jan;121(1):641-63.
[12] Golait Y, Kishore M. A new approach for free swell index and evaluation of swelling potential for construction sites. Indian Geot. Jl. 1990:485-9. Judd WR. Rock stress, rock mechanics and research. State of Stress in the Earth’s Crust, WR Judd, ed., Elsevier, New York. 1964:5-1.
[13] ASTM D. Standard test method for CBR (California Bearing Ratio) of laboratory-compacted soils. Annual Book of ASTM Standards. 1883;4.
[14] Bowles JE. Engineering Properties of Soils and Their Measurement, McGraw Hill. Inc. New Jersey. 1992.
[15] Judd WR. Rock stress, rock mechanics and research. State of Stress in the Earth’s Crust, WR Judd, ed., Elsevier, New York. 1964:5-1.
[16] Deer DU, Miller RP. Engineering Classification and Index Properties for Intact Rock: Technical Report AFNL-TR-65-116. Air Force Weapons Laboratory, New Mexico, USA. 1966.
[17] Cedergren HR, O'Brien KH, Arman JA, Cedergren KO. Guidelines for the design of subsurface drainage systems for highway structural sections. United States. Federal Highway Administration. Office of Research; 1972 Jun 1.