Profile URL: https://hdl.handle.net/20.500.13091/11568
Job Title:Dr. Arş. Gör.
Email Address:natasagun@ktun.edu.tr
Main Affiliation:02.02. Department of Civil Engineering
Status: Current Staff
ORCID:
0000-0003-2026-6888
0000-0003-2026-6888Scopus ID:
57224477073
57224477073YÖK Akademik: 7E3487694D2DDBE6
Web of Science ID:
CBR-1555-2022
CBR-1555-2022Name Variants:
Atasagun, Neslihan Atasağun, N.
6 results
Scholarly Output Search Results
Now showing 1 - 6 of 6
research-article.listelement.badge Farklı Pirolitik Biyo-yağların Destilasyon Kalıntıları Kullanılarak Elde Edilen Biyo-asfalt Bağlayıcıların Viskoziteleri ve FTIR Analizleri(NEU Press, 2025-12-31) Atasağun, NeslihanBu çalışmada, meşe talaşı, çay atıkları ve çam kozalağı biyokütlelerinden üretilen üç farklı pirolitik biyo-yağın destilasyon kalıntıları kullanılarak biyo-asfalt bağlayıcılar elde edilmiştir. İlk olarak, üç farklı biyokütleden piroliz yöntemiyle, oksijensiz ortamda azot gazı kullanılarak üç farklı biyo-yağ üretilmiştir. Üretilen pirolitik biyo-yağlar, destilasyon deneyine tabi tutularak hafif ürünler ayrıştırılmıştır. Üç farklı pirolitik biyo-yağdan elde edilen destilasyon kalıntıları, ayrı ayrı %10 oranında 50/70 saf bitüme eklenerek, 135±1°C sıcaklıkta, 1200 rpm hızla 30 dakika karıştırılmış ve üç farklı biyo-asfalt bağlayıcı elde edilmiştir. Bağlayıcıların kıvamları, sıcaklık hassasiyetleri ve viskozite değerleri, penetrasyon, yumuşama noktası, PI (penetrasyon indeksi) ve dönel viskozimetre (RV) deneyleri kullanılarak belirlenmiştir. Buna ek olarak, tüm bağlayıcıların FTIR (Fourier Dönüşümlü Kızılötesi) Spektroskopisi analiz sonuçlarından elde edilen fonksiyonel grupları belirlenmiştir. Analiz sonuçlarına göre, saf bitüm ile karşılaştırıldığında, biyo-asfalt bağlayıcılarda 1739,21 cm-1 ve 1216,56 cm-1 civarındaki pik şiddetlerinin daha fazla olduğu belirlenmiştir. Meşe talaşı, çam kozalağı ve çay atıkları biyo-yağı destilasyon kalıntısı katkılı biyo-asfalt bağlayıcıların yumuşama noktalarının, 50/70 saf bitümün yumuşama noktası değerinden, sırasıyla yaklaşık %8, %10 ve %12 oranlarında daha düşük olduğu tespit edilmiştir. Buna ek olarak, bu çalışmada, %10 çay atıkları pirolitik biyo-yağı destilasyon kalıntısı katkılı biyo-asfalt bağlayıcının en yumuşak kıvamlı bağlayıcı olduğu ve en düşük viskozite değerine sahip bağlayıcı olduğu belirlenmiştir. In this study, bio-asphalt binders were obtained by using the distillation residues of three different pyrolytic bio-oils produced from oak sawdust, tea wastes and pine cone biomasses. Firstly, three different bio-oils were produced from three different biomasses with pyrolysis method by using nitrogen gas in an oxygen-free environment. Light products were separated by subjecting the produced pyrolytic bio-oils to the distillation test. Distillation residues obtained from three different pyrolytic bio-oils were added separately to 50/70 pure bitumen at the rate of 10%, mixed at 135±1°C temperature, at 1200 rpm for 30 min and three different bio-asphalt binders were obtained. The consistencies, temperature sensitivities and viscosity values of the binders were determined by using penetration, softening point, PI (penetration index) and rotational viscometer (RV) tests. In addition, the functional groups of all binders obtained from the FTIR (Fourier Transform Infrared) Spectroscopy analysis results were determined. According to the analysis results, comparing with pure bitumen, it was determined that the intensities of the peaks around the 1739,21 cm-1 and 1216,56 cm-1 were higher in bio-asphalt binders. It was found that, the softening points of the bio-asphalt binders doped with bio-oil distillation residues from oak sawdust, pine cone and tea wastes were approximately 8%, 10% and 12% lower than the softening point of 50/70 pure bitumen, respectively. Additionally, in this study, it was found that the bio-asphalt binder doped with 10% tea waste pyrolytic bio-oil distillation residue was the softest consistency binder and had the lowest viscosity value.Article Citation - Scopus: 2Effect of Pyrolysis Char Produced From Co-Pyrolysis of Waste Sycamore Leaves and Plastic Cups on Bitumen Viscosity and High Temperature Performance Grade(Gazi Universitesi, 2021-05-24) Atasağun, NeslihanIn this study, the effects of pyrolysis char produced from co-pyrolysis of waste sycamore leaves and plastic cups on bitumen viscosity and high temperature performance grade were investigated. For this purpose, 50/70 penetration bitumen was modified with pyrolysis char produced by weight of 6% and 12% ratios in bitumen. Softening point test, penetration test, dynamic shear rheometer (DSR) test and rotational viscosity (RV) test were applied on pure bitumen and modified bitumens, also temperature susceptibility of bituminous binders were evaluated by determining the PI values. As a result, it was detected that pyrolysis char used as additive by weight of 6% and 12% ratios in bitumen increased the viscosity of pure bitumen approximately 33% and 83% ratios at 135?, increased the rutting resistance of pure bitumen 46% and 24% ratios at 70? respectively and increased the high temperature PG of pure bitumen. © 2021 Gazi Universitesi Muhendislik-Mimarlik. All rights reserved.Article Citation - WoS: 4Citation - Scopus: 4High-Temperature Rheological Properties and Storage Stability of Bitumen Modified With the Char Produced From Co-Pyrolysis of Different Wastes(MDPI, 2023-05-16) Atasagun, NeslihanBy enhancing the bitumen properties with the additives produced from waste, not only can the performance of flexible pavements be improved, but it can also contribute to the environment. This research aims to produce a novel pyrolytic char from different wastes and to investigate the usability of this char as an additive in bitumen. In this study, first, the pyrolytic char was produced from the co-pyrolysis of three different wastes, including waste paper cups, polypropylene (PP), and polyethylene terephthalate (PET) waste. Properties of the char were determined by using CHN (carbon, hydrogen, and nitrogen) and Fourier transform infrared spectroscopy (FTIR) analyses. The high-temperature rheological properties of binders were evaluated by using DSR (dynamic shear rheometer), RV (rotational viscometer), softening point, and penetration tests. Additionally, specific gravity, storage stability, high-temperature performance grades (PGs), and temperature susceptibilities of binders were determined. Test results showed that this pyrolytic char enhanced the high-temperature properties of neat bitumen by increasing softening point, viscosity, rutting resistance, and high-temperature PG of pure bitumen. Additionally, it can be said that the bituminous binder modified with this pyrolytic char had good storage stability when it was used at an 8% ratio in neat bitumen.Article Impacts of the Co-Pyrolytic Product From Waste Cooking Oil (WCO) and Polypropylene (PP) on Physical and Rheological Properties of Bitumen(Multidisciplinary Digital Publishing Institute (MDPI), 2026) Atasağun N.; Atasagun, NeslihanThis paper aims to investigate the effects of the co-pyrolytic product produced from the co-pyrolysis of waste cooking oil (WCO) and polypropylene (PP) on pure bitumen by using some physical and rheological tests. To reach this goal, the product was obtained by producing from the co-pyrolysis of WCO and PP at distinct conditions. Different pyrolytic products with different structural properties can be obtained from the co-pyrolysis of various materials at different pyrolysis conditions. It was not found any study in which bitumen was modified with the co-pyrolytic product produced from the co-pyrolysis of WCO and PP materials at specified blending ratios and conditions, as described in this paper. For this reason, this paper investigates the effects of this co-pyrolytic product as an additive on bitumen in order to improve some of the rheological and physical properties of bitumen and to overcome some problems for the first time. The mixture ratio was determined as 1:2 (WCO:PP). PG 64-22 neat bitumen was modified with this co-pyrolytic product, and some features of the bituminous binders were detected by using differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), penetration, softening point, dynamic shear rheometer (DSR), rotational viscometer (RV), a rolling thin film oven test (RTFOT), a pressurized aging vessel (PAV), a bending beam rheometer (BBR), storage stability, and scanning electron microscopy (SEM) tests. From the FTIR results of the modified binders, it was found that the intensity of the peak around 2357.69 cm−1 increased with the addition of this pyrolytic product. This pyrolytic additive hardened the pure bitumen’s consistency, increased its viscosity, improved its resistance against rutting deformations, and enhanced its high-temperature performance. It can be said that PG 64-22 pure bitumen can easily be modified with this pyrolytic product at the conditions described in this study. Additionally, this co-pyrolytic product improved the high-temperature performance grade (PG) of pure bitumen from PG 64 to PG 76 when it was used at 5% of the weight of neat bitumen. The findings demonstrated that the modified bituminous binders containing 3% and 5% co-pyrolytic product had suitable storage stabilities. © 2026 by the author.Article Farklı Oranlardaki Poliolefin Polimer Karışımları ve Sbs Kopolimerinin Bitümün Viskozitesine ve Sıcaklık Hassasiyetine Etkilerinin Karşılaştırmalı Olarak Değerlendirilmesi(2023) Atasağun, NeslihanBu çalışmada, farklı oranlardaki poliolefin karışımlarının (polipropilen(PP):polietilen(PE)) saf bitümün viskozitesine ve sıcaklık hassasiyetine etkisinin belirlenmesi ve SBS (stiren-butadiyen-stiren) modifiye bitümler ile karşılaştırmalı olarak değerlendirilmesi amaçlanmıştır. Bu amaçla, saf bitüm farklı oranlardaki poliolefin karışımları (PP:PE) ve ayrıca %2SBS, %4SBS ve %4PP ile modifiye edilmiştir. Polimerlerin saf bitüm üzerindeki etkilerini değerlendirmek için tüm bağlayıcıların viskozite, yumuşama noktası, penetrasyon, sıcaklık hassasiyeti ve karıştırma-sıkıştırma sıcaklık değerleri belirlenmiştir. 135°C’deki deney sonuçları, 3:1 PP:PE ve 1:3 PP:PE katkılı bitümlerin viskozitelerinin, %2SBS ve %4PP modifiye bitümlerin viskozite değerlerinden daha yüksek olduğunu göstermiştir. %4 SBS katkılı bitümün en az sıcaklık hassasiyetine ve 135°C’de en yüksek viskozite değerine sahip bağlayıcı olduğu görülmüştür. 135°C’de tüm bağlayıcıların viskozitelerinin 3 Pa s şartname kriterini aşmadıkları tespit edilmiştir. 3:1 PP:PE modifiye bitümün diğer poliolefin katkılı bitümlerden ve %2SBS modifiye bitümden daha az sıcaklık hassasiyetine sahip bağlayıcı olduğu belirlenmiştir. Sonuçlar, tüm polimer modifiye bitümler arasında %2SBS katkılı bitümün en düşük karıştırma-sıkıştırma sıcaklıklarına sahip bağlayıcı olduğunu göstermiştir.Other High Temperature Rheological Properties and Storage Stability of Bitumen Modified with The Char Produced from Co-Pyrolysis of Different Wastes(2023) Atasağun, NeslihanBy enhancing the bitumen properties with the additives produced from wastes not only can be improved the performance of flexible pavements but also can be contributed to the environment. This research aims to produce a novel pyrolytic char from different wastes and to investigate the usability of this char as an additive in bitumen. In this study, firstly, the pyrolytic char was produced from co-pyrolysis of three different wastes including waste paper cups, polypropylene (PP) and polyethylene terephthalate (PET) wastes. Properties of the char were determined by using CHN (carbon, hydrogen, nitrogen) and Fourier transform infrared spectroscopy (FTIR) analyses. The high temperature rheological properties of binders were evaluated by using DSR (dynamic shear rheometer), RV (rotational viscometer), softening point and penetration tests. Additionally, specific gravity, storage stability, high temperature performance grades (PG) and temperature susceptibilities of binders were determined. Test results showed that this pyrolytic char enhanced the high temperature properties of neat bitumen by increasing softening point, viscosity, rutting resistance and high temperature PG. And, it can be said that the bituminous binder modified with this pyrolytic char had a good storage stability when it was used at 8% ratio in neat bitumen.
Research Topics
Domains
Physical Sciences
Fields
EngineeringMaterials Science
Subfields
Civil and Structural EngineeringPolymers and PlasticsBiomedical Engineering
Specific Research Areas
Asphalt Pavement Performance Evaluation
Polymer Nanocomposites and Properties
Polymer crystallization and properties
Lignin and Wood Chemistry
Natural Fiber Reinforced Composites
Sustainable Development Goals
7AFFORDABLE AND CLEAN ENERGY
1
Research Products
Documents
2
Citations
6
h-index
2
Documents
3
Citations
7
Publication Collaboration
| Affiliation Name | Count |
|---|---|
| Konya Technical University | 4 |
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Data obtained from OpenAlex
| Journal | Count |
|---|---|
| Journal of the Faculty of Engineering and Architecture of Gazi University | 1 |
| Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi | 1 |
| Polymers | 1 |
| Preprints.Org | 1 |
| Sustainability | 1 |
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Scholarly Output
6
Articles
4
Views / Downloads
4/24
Supervised MSc Theses
0
Supervised PhD Theses
0
WoS Citation Count
4
Scopus Citation Count
6
Patents
0
Projects
0
WoS Citations per Publication
0.67
Scopus Citations per Publication
1.00
Open Access Source
6
Supervised Theses
0
Scopus Quartile Distribution
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