Amirkabir University of Technology Amirkabir Journal of Civil Engineering 2588-297X 53 2 2021 04 21 Laboratory Investigation of the Effect of “NICOFLOK” Polymer on the Compressive and Tensile Strength of Desert and Coastal Sand at the pavement Layers Laboratory Investigation of the Effect of “NICOFLOK” Polymer on the Compressive and Tensile Strength of Desert and Coastal Sand at the pavement Layers 733 748 3788 10.22060/ceej.2020.16612.6288 FA Farzad Rezaie Moghaddam Department of Civil Engineering, Faculty of Engineering, ardebil, iran Bahman Jafari Nader Civil Engineering - ardebil - iran Taghi Rezaie Moghaddam ardabil, iran Journal Article 2019 06 25 Dune sand can be easily found on beaches and deserts. In this study samples from beaches of the Caspian Sea in Astara and Mazandaran and also from deserts around Kerman were recognized and collected. The effect of adding Nikoflok polymer with cement to samples after stabilization was investigated. This study aims to improve the compressive and tensile strength of samples made of dune sand from beaches and deserts to assess the possibility of using them with cement in the subgrade, sub-base and base. 200 samples with 3, 6, and 12 percent of cement, 0.3, 0.6, and 1.2 percent of Nikoflok and dune sand were made and underwent 7, and 28 day compressive and indirect tensile tests. Also, the strength degradation of samples under 45 cycles of freeze-thaw was investigated. The results showed that by stabilizing dune sand with cement and Nikoflok, its compressive and tensile strength increases and it can be used in pavement layers. <br />  Dune sand can be easily found on beaches and deserts. In this study samples from beaches of the Caspian Sea in Astara and Mazandaran and also from deserts around Kerman were recognized and collected. The effect of adding Nikoflok polymer with cement to samples after stabilization was investigated. This study aims to improve the compressive and tensile strength of samples made of dune sand from beaches and deserts to assess the possibility of using them with cement in the subgrade, sub-base and base. 200 samples with 3, 6, and 12 percent of cement, 0.3, 0.6, and 1.2 percent of Nikoflok and dune sand were made and underwent 7, and 28 day compressive and indirect tensile tests. Also, the strength degradation of samples under 45 cycles of freeze-thaw was investigated. The results showed that by stabilizing dune sand with cement and Nikoflok, its compressive and tensile strength increases and it can be used in pavement layers. <br />  https://ceej.aut.ac.ir/article_3788_deb74a85a4a68465b75c721d45db5d3b.pdf