TEXT Bensaci Hamza^1*, Menadi Belkacem^1*, Kenai Said¹, Mehmet Serkan Kırgız^{2,3*
                  1}Geomaterials Laboratory, Department of Civil Engineering, University of Blida 1, Algeria
              ²Department of Civil Engineering, Faculty of Engineering and Architecture, Istanbul Gelisim
          University, Istanbul/Turkey
              ³Northwestern University, Chicago, IL/USA; ^*Correspondence: