Comparison of Rheological Properties of Bitumens Having Various Penetration Classes

Taylan Günay

Makale detayları

Comparison of Rheological Properties of Bitumens Having Various Penetration Classes

Yazarlar:

Taylan Günay

Yayıncı:

Osmaniye Korkut Ata Üniversitesi

Ana Başlıklar:

İnşaat Mühendisliği

Dergi:

Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.6 Issue 1, pp.682-699

Belge Tipi:

Makale

Yayın Tarihi:

10/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001284870

pISSN:

2687-3729

Anahtar kelimeler:

Özet:

 As known, most of the deteriorations in flexible pavements are related to the deformation properties of the bitumen used as a binder. For this reason, it is fundamental to know the deformation behavior of bitumen which is a viscoelastic and thermoplastic material. In this study, the rheological properties of binders having B5070 and B160220 penetration classes were investigated with multiple test methods, and the differences in rheological parameters of these two binders were determined. For this purpose, in the first stage of the study, the physical properties of the binders such as penetration softening point, viscosity were determined, and the short and long-term aging processes of the binder were conducted by means of rotating thin film heating oven RTFO and a pressure aging vessel PAV tests. After these studies, the rheological experiment program was applied. The viscoelastic limit LVE ranges of individual binder types were determined by amplitude experiments, and the time-dependent deformation behavior of binders was observed with the small amplitude oscillation shear SAOS test. By means of SAOS test data, the master curves of the binders were drawn, and the storage and loss moduli of the binders were investigated within a wide frequency range. As a result of the test parameters obtained, the rheological differences between B5070 and B160220 bitumen were rheologically investigated. SAOS tests proves that B160220 might exhibit completely viscous behavior over 40 oC. According to LAS test results B5070 could have a longer fatigue life compared to that of B160220.

 As known, most of the deteriorations in flexible pavements are related to the deformation properties of the bitumen used as a binder. For this reason, it is fundamental to know the deformation behavior of bitumen which is a viscoelastic and thermoplastic material. In this study, the rheological properties of binders having B5070 and B160220 penetration classes were investigated with multiple test methods, and the differences in rheological parameters of these two binders were determined. For this purpose, in the first stage of the study, the physical properties of the binders such as penetration softening point, viscosity were determined, and the short and long-term aging processes of the binder were conducted by means of rotating thin film heating oven RTFO and a pressure aging vessel PAV tests. After these studies, the rheological experiment program was applied. The viscoelastic limit LVE ranges of individual binder types were determined by amplitude experiments, and the time-dependent deformation behavior of binders was observed with the small amplitude oscillation shear SAOS test. By means of SAOS test data, the master curves of the binders were drawn, and the storage and loss moduli of the binders were investigated within a wide frequency range. As a result of the test parameters obtained, the rheological differences between B5070 and B160220 bitumen were rheologically investigated. SAOS tests proves that B160220 might exhibit completely viscous behavior over 40 oC. According to LAS test results B5070 could have a longer fatigue life compared to that of B160220.

 As known, most of the deteriorations in flexible pavements are related to the deformation properties of the bitumen used as a binder. For this reason, it is fundamental to know the deformation behavior of bitumen which is a viscoelastic and thermoplastic material. In this study, the rheological properties of binders having B5070 and B160220 penetration classes were investigated with multiple test methods, and the differences in rheological parameters of these two binders were determined. For this purpose, in the first stage of the study, the physical properties of the binders such as penetration softening point, viscosity were determined, and the short and long-term aging processes of the binder were conducted by means of rotating thin film heating oven RTFO and a pressure aging vessel PAV tests. After these studies, the rheological experiment program was applied. The viscoelastic limit LVE ranges of individual binder types were determined by amplitude experiments, and the time-dependent deformation behavior of binders was observed with the small amplitude oscillation shear SAOS test. By means of SAOS test data, the master curves of the binders were drawn, and the storage and loss moduli of the binders were investigated within a wide frequency range. As a result of the test parameters obtained, the rheological differences between B5070 and B160220 bitumen were rheologically investigated. SAOS tests proves that B160220 might exhibit completely viscous behavior over 40 oC. According to LAS test results B5070 could have a longer fatigue life compared to that of B160220.

 Esnek üstyapılarda meydana gelen bozulmaların büyük bir çoğunluğunun bağlayıcı malzeme olarak kullanılan bitüm ve bitümün deformasyon özellikleriyle ilişkili olabileceği bilinmektedir. Bu nedenle, viskoelastik ve termoplastik bir malzeme olan bitümün sıcaklık ve trafik etkisi altında deformasyon davranışlarının bilinmesi önem arz etmektedir. Çalışmada, ülkemizde kullanılmakta olan B5070 ve B160220 sınıfına ait bağlayıcıların reolojik özellikleri güncel deney yöntemleriyle incelenmiş, iki bağlayıcı türüne ait reolojik parametrelerde meydana gelen farklılıklar araştırılmıştır. Bu amaçla, çalışmanın ilk aşamasında bağlayıcıların penetrasyon, yumuşama noktası, viskozite gibi fiziksel özelliklerine ait parametreler tespit edilmiş, ayrıca dönel ince film halinde ısıtma etüvü RTFO ve basınçlı yaşlandırma kabı PAV yardımıyla bağlayıcıların çeşitli reolojik deneylerde kullanılmak üzere kısa ve uzun vadeli yaşlandırma işlemleri gerçekleştirilmiştir. Bu çalışmaların ardından, reolojik deney programına geçilmiştir. Buna göre, farklı genlik amplitude sweep deneyleri yardımıyla bağlayıcı türlerinin viskoelastik limit LVE değerleri belirlenmiş, küçük genlik salınım kesme deneyi SAOS ile bağlayıcıların zamana bağlı deformasyon davranışları gözlemlenmiştir. SAOS deneyi verileri yardımıyla bağlayıcı türlerine ait ana eğriler oluşturularak daha geniş bir frekans aralığında bağlayıcıların depolama ve kayıp modülü parametreleri araştırılmıştır. Güncel bir yorulma deneyi olan lineer genlik tarama LAS testi ile bağlayıcıların yorulma ömürleri belirlenmiştir. Elde edilen test parametreleri neticesinde B5070 ve B160220 bitümleri arasındaki reolojik farklılıklar karşılaştırılmalı olarak ortaya konmuştur. SAOS deneyi verilerine göre B160220 bağlayıcısının 40 oCnin üzerinde tümüyle viskoz davranış biçimini sergileyebileceği ortaya konmuştur. LAS deneyi neticesinde düşük deformasyon mertebelerinde B5070 bitümünün B160220 bağlayıcısına göre daha uzun bir yorulma ömrü olabileceği belirlenmiştir.

Makale detayları

Comparison of Rheological Properties of Bitumens Having Various Penetration Classes

Yazarlar:

Taylan Günay

Yayıncı:

Osmaniye Korkut Ata Üniversitesi

Ana Başlıklar:

İnşaat Mühendisliği

Dergi:

Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.6 Issue 1, pp.682-699

Belge Tipi:

Makale

Yayın Tarihi:

10/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001284870

pISSN:

2687-3729

Bitumen

Rheology

Deformations

Fatigue

Bitüm

Reoloji

Deformasyon

Yorulma ömrü

Sayı

Makale detayları

Yazarlar: Taylan Günay

Yayıncı: Osmaniye Korkut Ata Üniversitesi

Ana Başlıklar: İnşaat Mühendisliği

Dergi: Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.6 Issue 1, pp.682-699

Belge Tipi: Makale

Yayın Tarihi: 10/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001284870

pISSN: 2687-3729

Sayı

Yazarlar:

Taylan Günay

Yayıncı:

Osmaniye Korkut Ata Üniversitesi

Ana Başlıklar:

İnşaat Mühendisliği

Dergi:

Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.6 Issue 1, pp.682-699

Belge Tipi:

Makale

Yayın Tarihi:

10/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001284870

pISSN:

2687-3729