Hakkı Oral Özhan

Title:

Associate Prof. Dr.

Department:

Civil Engineering Department

Position:

Vice Chair

Email:

hakki.ozhan@yeditepe.edu.tr

Telephone:

216-5780000/3227

Office:

Engineering Faculty A-910

Time:

Full Time

Akademik

Resume

Ph.D.: Bogazici University, Istanbul, Turkey

M.Sc.: Bogazici University, Istanbul, Turkey

M.Sc.: Brandenburg Technical University, Cottbus, Germany

B.Sc.: Istanbul Technical University, Istanbul, Turkey

Assoc. Prof. Hakkı Özhan graduated from Civil Engineering Department of Istanbul Technical University. Then, he got his Master’s degree from Bogazici University. He completed experimental work of his thesis study by performing in-situ tests on prestressed ground anchors at Brandenburg Technical University, Germany. He got his PhD in Civil Engineering from Bogazici University under the supervision of Prof. Dr. Erol Guler. During his PhD study, he focused on the internal erosion of geosynthetic clay liners (GCLs) and the hydraulic performance of the GCLs at high hydraulic heads. He worked as a research and teaching assistant for almost 6 years at Bogazici University. Meanwhile, he also took part in various geotechnical projects as a researcher. Between 2012 and 2019, he worked as an Asst. Prof. in Civil Engineering Department of Altinbas University, Istanbul. Throughout these years (2014-2017), he completed “TÜBİTAK 3501 Career Development Project” with the title of “Effects of Waste Water Temperature on the Hydraulic Performance of Polymer Treated and Untreated Geosynthetic Clay Liners”. His fields of interests in research are geosynthetics, geosynthetic clay liners, usage of geosynthetics in waste containment facilities, polymer-enhanced soils, biopolymers in geotechnical engineering, environmental geotechnics and soil improvement techniques. Since 2019, he has been working as an Associate Professor in Civil Engineering Department of Yeditepe University

CV

Courses Given

Soil Mechanics

Earth Sciences

Foundation Engineering

Engineering Project

Introduction to Environmental Geotechnics

Publications

Projects:

Executive - TÜBİTAK 1002-Short Term R&D Funding Program: Hydraulic Conductivity Performance of the Use of Geosynthetic Clay Cover (GCC) against Microplastics, Project No: 123M367, Project Executive: Assoc. Prof. Dr. Hakkı Oral Özhan, Researchers: Prof. Dr. Mehmet Murat Monkul, with a budget of 60.000 TL (July 2023- )
Executive - TUBITAK 3501 Career Development Program: Effect of Wastewater Temperature on Hydraulic Performance of Polymer Additive and Unadulterated Geosynthetic Clay, Project No: 114M282, 231.262 TL (October 2014 - October 2017)
Principal Researcher - BAP: Finite Element Analysis of Geosynthetic Clay Cover Used in Waste Collection Areas and Laying on Soils, Altınbaş University Scientific Research Project, with a budget of 10.000 TL (January 2013 - January 2014)
Researcher - BAP: Effects of Selected Factors on Internal Erosion of Geosynthetic Clay Cover, Boğaziçi University Scientific Research Project, Project No: 07HA401 (2007-2010)
Researcher - University / Industry Joint Project: Eti Mine Works Emet Boric Acid Production Facility Waste Dam Reservoir Selection and Stability Analysis, Joint Project with Bogazici University, 2006

Journal Papers

Özhan, H.O., Elnemr, A.M.T. (2024). Compaction Behaviour of a Sandy Road Base Contaminated with Microplastics from Vehicle Tires, Soil Use and Management, 40(3), e13090. DOI: 10.1111/sum.13090.
Özhan, H.O., Erkal, A. (2023). Internal erosion and permeability of Na CMC-treated and PAM-treated geosynthetic clay liners, Geotextiles and Geomembranes, 51(6), 17-27. DOI: 10.1016/j.geotexmem.2023.08.002
Monkul, M.M., Özhan, H.O. (2021). Microplastic Contamination in Soils: A Review from Geotechnical Engineering View, Polymers, 13(23), 4129. DOI: 10.3390/polym13234129
Özhan, H.O. (2021). Determination of Mechanical and Hydraulic Properties of Polyacrylamide-Added Bentonite-Sand Mixtures, Bulletin of Engineering Geology and the Environment, 80(3), 2557-2571. DOI: /10.1007/s10064-020-02062-9
Özhan, H.O. (2018). Effects of Temperature Increase in 0.5 M MgCl2 Solution on Hydraulic Capability of Anionic Polymer-Treated Geosynthetic Clay Liners Used as Barriers, Journal of Environmental Engineering, ASCE, 144(10). DOI: 10.1061/(ASCE)EE.1943-7870.0001451
Özhan, H.O. (2018). Hydraulic Capability of Polymer-Treated GCLs in Saline Solutions at Elevated Temperatures, Applied Clay Science, 161, 364-373. DOI: 10.1016/j.clay.2018.05.007
Özhan, H.O., Güler, E. (2018). Design of a Geomembrane-Laminated Geosynthetic Clay Liner on the Slopes of a Mine Tailings Dam in Emet, Turkey, Mine Water and the Environment, 37(3), 541-551. DOI: 10.1007/s10230-018-0538-9
Güler, E., Özhan, H.O. and Karaoglu, S. (2018). Hydraulic performance of anionic polymer-treated bentonite-granular soil mixtures, Applied Clay Science, 157, 139-147. DOI: 10.1016/j.clay.2018.02.047
Özhan, H.O., Güler, E. (2017). Critical tendon bond length for prestressed ground anchors in pullout performance tests conducted in sand, International Journal of Civil Engineering, 16(10), 1329-1340. DOI: 10.1007/s40999-017-0261-0
Özhan, H.O. (2017). Problems and solutions for GCLs used in waste containment facilities: temperature concerns and polymer treatment related to GCLs used in waste containment areas, Innovative Infrastructure Solutions, 2(43). DOI: 10.1007/s41062-017-0095-2
Özhan, H.O., Güler, E. (2016). Factors Affecting Failure by Internal Erosion of Geosynthetic Clay Liners Used in Fresh Water Reservoirs, Environmental & Engineering Geoscience, May 2016, 22(2), 157-169. DOI: 10.2113/gseegeosci.22.2.157
Erkal, A, Özhan, H.O. (2014). Value and Vulnerability Assessment of a Historic Tomb for Conservation, The Scientific World Journal, Volume 2014, Article ID 357679, 1-10. DOI: 10.1155/2014/357679
Özhan, H.O., Güler, E. (2013). Use of Perforated Base Pedestal to Simulate Gravel Subbase in Evaluating the Internal Erosion of Geosynthetic Clay Liners, Geotechnical Testing Journal, ASTM, 36(3), 418-428. DOI: 10.1520/GTJ20120133

Conference publications

Özhan, H.O., Elnemr, A.M.T. (2024). “Effect of Shredded Vehicle Tyres as Microplastics on Stabilization of Sandy Soil”, 7th International Congress on Water, Waste and Energy Management (WWEM-24), 24-26 July 2024, Lisbon, Portugal.
Özhan, H.O. (2023). “Hydraulic performance of Na CMC-added GCLs permeated with a simulated leachate at different temperatures”, Geosynthetics: Leading the Way to a Resilient Planet - Proceedings of the 12th International Conference on Geosynthetics (12ICG), September 17-21, 2023, Rome, Italy. ISBN 978-1-003-38688-9, Taylor & Francis, CRC Press, 1407-1412. DOI: 10.1201/9781003386889-181
Özhan, H.O. (2022). “Sodium Carboxymethyl Cellulose-Enhanced GCLs in Freshwater Reservoirs”, IOP Conference Series: Materials Science and Engineering, 1260, 012006, 7thEuropean Geosynthetics Congress (organized by IGS), Warsaw, Poland, 3-7 September 2022, pp. 1-9, DOI: 10.1088/1757-899X/1260/1/012006
Özhan, H.O., Monkul, M.M. (2022). “Microplastics in Soil: A Geotechnical Engineering Perspective”, ISGPEG 2022-International Conference on Innovative Solutions for Geotechnical Problems-in Honour of Prof. Erol Güler (organized by Bogazici University and IGS Turkish Chapter), Bogazici University, Istanbul, Turkey, 22-23 June 2022, 8 p.
Özhan, H.O. (2019). “Measuring Shear Strength Parameters of Polymer-Added Bentonite-Sand Mixtures in Laboratory Experiments”, 7th International Symposium on Deformation Characteristics of Geomaterials (organized by ISSMGE), Glasgow, Scotland, 26-28 June 2019, E3S Web of Conferences 92, 11014 (2019), DOI: 10.1051/e3sconf/20199211014
Özhan, H.O. (2017). “GCL Usage in Waste Containment Facilities”- Keynote Speaker in Workshop 4-Geosynthetics Engineering: Barrier, Sustainable Civil Infrastructures-GeoMeast 2017 International Conference, Sharm-El Sheikh, Egypt, 15-19 July 2017
Özhan, H.O. (2017). “Effects of Adding Anionic Polymer to GCLs Treated with Chemical Solutions”, 9th International Conference on Soil Mechanics and Geotechnical Engineering (organized by ISSMGE), Seoul, South Korea, 17-22 September 2017, pp. 955-958
Özhan, H.O. (2016). “Hydraulic Capability of Polymer-Treated GCLs”, 4th International Conference on New Developments in Soil Mechanics and Geotechnical Engineering (organized by ISSMGE), Near East University, Nicosia-North Cyprus, 2-4 June 2016, pp. 559-566
Özhan, H.O., Eseller Bayat, E. and Zanjani, E.Y. (2016). “Dynamic Analysis of Buried Pipelines with Geogrid Reinforcement”, 6th European Geosynthetics Congress (organized by IGS), Ljubljana, Slovenia, 25-28 September 2016, pp. 1390-1400
Özhan, H.O. (2015). “Geotextile Deformation Analysis of Geosynthetic Clay Liners with FEM”, VII International Conference on Textile Composites and Inflatable Structures-Structural Membranes 2015, Barcelona-Spain, 19-21 October 2015, pp. 524-533
Güler, E., Özhan, H.O. and Cengiz, C. (2014). “Lamination Effect on Flow Rates through Composite Liners”, 10th International Conference on Geosynthetics (organized by IGS), Berlin-Germany, 21-25 September 2014, pp. 1694-1700
Erkal A., Özhan, H.O. (2013). “Engineering Risk Assessment and Cultural Analyses of Historic Nisanci Hamza Pasa Tomb in Istanbul”, 2nd Specialty International Conference on Monumental Cemeteries Knowledge, Conservation and Restyling, Ostuni-Italy, 10-12 May 2013, pp. 1-8
Özhan, H.O., Güler, E. (2012). “Internal Erosion of Three Different Geosynthetic Clay Liners Tested Over a Perforated Base Pedestal”, 22nd European Young Geotechnical Engineers Conference (EYGEC) (organized by ISSMGE), Goteborg, Sweden, 26-29 August 2012, pp. 9-14
Güler E., Avcı, C. and Özhan, H.O. (2010). “Advantages of using Geomembrane Laminated Geosynthetic Clay Liners for a Tailing Dam in Emet, Turkey”, 3rd International Symposium on Geosynthetic Clay Liners (organized by IGS), Wurzburg, Germany, 15-16 September 2010, pp. 279-287

Journal publications (national)

Özhan, H.O. (2023). Biyopolimer Katkılı Geosentetik Kil Örtülerde İçsel Erozyon ile Permitivite Tayini, Artvin Çoruh Üniversitesi Doğal Afetler ve Çevre Dergisi (ULAKBİM), 9(1), 181-190. DOI: 10.21324/dacd.1175637
Özhan, H.O. (2018). Katyonik Polimer Katkılı Geosentetik Kil Örtülerin Farklı Tuz Çözeltileri ile Etkileşimi, Artvin Çoruh Üniversitesi Doğal Afetler ve Çevre Dergisi (ULAKBİM), 4(2), 171-181. DOI: 10.21324/dacd.412180
Özhan, H.O. (2017). Anyonik Polimerin Kaolin Kilinin Mühendislik Özelliklerine Etkisi, AURUM-Mühendislik Sistemleri ve Mimarlık Dergisi, 1(1), 11-23

Conference publications (national)

Özhan, H.O. (2019). “Geosentetik Kil Örtülerde Kullanılan Poliakrilamid Katkılı Bentonitin Kayma Direnci Tayini”, Sekizinci Ulusal Geosentetikler Konferansı, Boğaziçi Üniversitesi, İstanbul, 16-17 Mayıs 2019, pp. 319-327
Özhan, H.O. (2017). “Farklı Sıcaklıklardaki Kimyasal Çözeltide Kullanılan Geosentetik Kil Kaplamanın Hidrolik Performansı”, Yedinci Ulusal Geosentetikler Konferansı, Boğaziçi Üniversitesi, İstanbul, 11-12 Mayıs 2017, pp. 97-107
Özhan, H.O. (2016). “Katyonik Polimer Katkılı Geosentetik Kil Örtülerin Hidrolik Özellikleri”, Zemin Mekaniği ve Geoteknik Mühendisliği Onaltıncı Ulusal Kongresi, Atatürk Üniversitesi, Erzurum, 13-14 Ekim 2016, pp. 139-148
Özhan, H.O., Güler, E. (2014). “İçsel Erozyona Uğramış Geosentetik Kil Örtülerin Kalınlık ve Su Muhtevası Karşılaştırması”, Altıncı Ulusal Geosentetikler Konferansı, Boğaziçi Üniversitesi, İstanbul, 29-30 Mayıs 2014, pp. 27-36
Avcı, C., Güler, E. and Özhan, H.O. (2008). “Maden Atık Barajlarında Geotekstil Kil Tabakası Kullanımlarının Değerlendirilmesi”, Üçüncü Ulusal Geosentetikler Konferansı, Boğaziçi Üniversitesi, İstanbul, 13-14 Kasım 2008, pp. 71-80

Özhan, H.O. (2022). “Sodium Carboxymethyl Cellulose-Enhanced GCLs in Freshwater Reservoirs”, IOP Conference Series: Materials Science and Engineering, 1260, 012006, 7thEuropean Geosynthetics Congress (organized by IGS), Warsaw, Poland, 3-7 September 2022, pp. 1-9, DOI: 10.1088/1757-899X/1260/1/012006

Özhan, H.O., Monkul, M.M. (2022). “Microplastics in Soil: A Geotechnical Engineering Perspective”, ISGPEG 2022-International Conference on Innovative Solutions for Geotechnical Problems-in Honour of Prof. Erol Güler (organized by Bogazici University and IGS Turkish Chapter), Bogazici University, Istanbul, Turkey, 22-23 June 2022, 8 p.

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Hakkı Oral Özhan

Akademik

CV