In-field aging process of high content SBS modified asphalt in porous pavement

Rasool, Raqiqa Tur; Yao, Hongru; Hassan, Ammar; Wang, Shifeng; Zhang, Haiyan

doi:10.1016/j.polymdegradstab.2018.07.023

Cited by 41 publications

(10 citation statements)

References 24 publications

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“…The aging of SMB includes not only oxidation and poly-condensation of base bitumen, but also the oxidative degradation of SBS, which differs from the aging of base bitumen [ 11 ]. Owing to the oxidative degradation of SBS, the road performances of SMB after long-term aging significantly drop to hardly meet standardized requirements [ 12 , 13 , 14 , 15 ]. Thus, the consideration regarding the comprehensive performance recovery of SMB should be taken for both aged bitumen and aged SBS.…”

Section: Introductionmentioning

confidence: 99%

Assessment on Physical and Rheological Properties of Aged SBS Modified Bitumen Containing Rejuvenating Systems of Isocyanate and Epoxy Substances

et al. 2019

Materials

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Styrene–butadiene copolymer (SBS)-modified bitumen (SMB) is widely applied in pavement construction. With yearly services, many SMB wastes urgently need to be reclaimed for repaving roads based on the objectives of environmental protection, landfill saving, as well as resource utilization. The present work is focused on the investigation of the physical and rheological properties of aged SMB incorporated with rejuvenating systems consisting of fluid catalytic cracking slurry (FCC slurry), C12–14 aliphatic glycidyl ether (AGE), diphenylmethane diisocyanate (MDI), and other additives. The rejuvenating systems containing the main components of 10% FCC slurry, 10%FCC/3%AGE, and 10%FCC/3%AGE/1% MDI were respectively recorded as Ra, Rb, and Rc. The results indicate that both Rb and Rc have obvious workability that make contributions for improving comprehensive physical properties while slightly reducing the softening point, which were also proven to be effective for the re-rejuvenation of re-aged binder. The higher viscous-elastic temperature caused by the agglomeration of binder molecules in aged SMB could be dropped to a lower value with rejuvenating systems, while improving the low-temperature crack resistance. With the use of the Rb and Rc rejuvenating systems, the high-temperature deformation resistance of aged SMB fell, approaching the performance of fresh SMB. Vibration noise consumption could be improved for aged SMB incorporated with Rb and Rc in the form of viscous loss, while the effects for re-aged SMB containing the same rejuvenating systems were weakened but still effective.

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Section: Introductionmentioning

confidence: 99%

Assessment on Physical and Rheological Properties of Aged SBS Modified Bitumen Containing Rejuvenating Systems of Isocyanate and Epoxy Substances

et al. 2019

Materials

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“…Kırılma çizgileri, malzemenin zayıf noktalarını, yani moleküllerin bağlanma noktalarını takip etmektedir. Bu durumda, yaşlanmanın sonrasında bağları zarar görmüş numunelerin kırılmalarının ardından yüzey morfolojilerinin de daha pürüzlü olduğu görülmüştür[26].Deneysel çalışmalarda kullanılan D 1192 SBS kopolimeri Kraton® Polimers/Hollanda'dan temin edilmiştir. Tablo 3'de SBS kopolimerine ait moleküler ağırlık değerlerini belirlemede kullanılan GPC (Jel Geçirgenlik Kromatografisi) deneyi sonuçları verilmiştir.…”

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Stiren-Butadiyen-Stiren İçeriğinin Bitümün Kırılmış Yüzey Morfolojisine Etkilerinin İncelenmesi

Özdemir

2020

Fırat Üniversitesi Mühendislik Bilimleri Dergisi

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Öz: Ülkemizde ve dünyada en sık kullanılan polimer katkısı Stiren-Butadiyen-Stiren (SBS), bitümlü malzemelerde moleküller arası çapraz bağlanmaları oluşturmakta ve bu da bitüm yapısında yapısal, kimyasal, reolojik ve morfolojik vb. farklılıklara yol açmaktadır. Çalışma kapsamında, Taramalı Elektron Mikroskobu (SEM) kullanılarak Polimer Modifiye Bitümün (PMB) kırılmış yüzey morfolojilerinin farklı oranlarda SBS kullanımıyla değişimleri incelenmiştir. Farklı oranlarda SBS kullanımının bitüm içerisindeki şişme oranları Floresan mikroskop (FM) ve Image J Programı kullanılarak araştırılmış ve sonuçlar bitümün çapraz bağ oluşumları ile ilişkilendirilmeye çalışılmıştır. Ek olarak, numuneler Dönel İnce Film Halinde Isıtma (RTFO) deneyi ve Basınçlı Yaşlandırma Kabı (PAV) kullanılarak uzun dönem yaşlanmaya maruz bırakılmış, moleküller arası bağların zarar görmesi sağlanmış ve bunun yüzey morfolojik görüntüler üzerindeki etkisi incelenmiştir. Sonuç olarak, SBS miktarının %5'den fazla kullanılması durumunda daha yüksek malten içeriğindeki bitümlerin kullanılması gerektiği ve PMB numunelerinin saf bitüme oranla çapraz bağlanmalardan kaynaklı olarak daha pürüzlü kırılmış yüzey morfolojisine sahip olduğu bulunmuştur. Uzun dönem yaşlandırılan numunelerde ise, moleküller arası bağların zayıflamasından kaynaklı olarak daha pürüzlü kırılmış yüzeyler elde edilmiştir.

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“…Generally speaking, the existence of dispersed SBS phase improves the engineering properties at the high and low temperature of bitumen. However, the surface cracking imply that virgin bitumen and SBS modified bitumen gradually become brittle at a lower temperature after UV aging [31]. In a word, the aging resistance of SBS modified bitumen is better than that of virgin bitumen in terms of surface cracking due to UV aging.…”

Section: Resultsmentioning

confidence: 99%

Aging Mechanism and Properties of SBS Modified Bitumen under Complex Environmental Conditions

et al. 2019

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Bitumen aging can lead to the deterioration of asphalt pavement performance, shortening the service life of road. In order to solve the problem that current studies on the ultraviolet (UV) aging of bitumen either ignore the effects of natural environmental conditions or only consider the effects of water. In this study, different aqueous media and UV coupled simulated aging tests were carried out on virgin bitumen and styrene butadiene styrene (SBS) modified bitumen in a UV environment chamber. The combination of macroscopic performance tests and microstructure tests was used to analyze the physical, rheological, and microstructure changes of virgin bitumen and SBS modified bitumen after The film oven test (TFOT) aging and UV aging in different environments (UV, UV + Water, UV + Acid, UV + Salt). Dynamic shear rheometer (DSR) results indicated that UV aging results in the increase of rutting factor and the improvement of rutting resistance at high temperature. The Fourier transform infrared spectrum (FTIR) results illustrated that the bitumen would be oxidized and SBS would be degraded under ultraviolet radiation. The four-component analysis test results showed that light component migrated to the heavy component during the aging process. Moreover, water will aggravate the UV aging of bitumen, and the presence of acid or salt worsens ultraviolet aging.

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In-field aging process of high content SBS modified asphalt in porous pavement

Cited by 41 publications

References 24 publications

Assessment on Physical and Rheological Properties of Aged SBS Modified Bitumen Containing Rejuvenating Systems of Isocyanate and Epoxy Substances

Assessment on Physical and Rheological Properties of Aged SBS Modified Bitumen Containing Rejuvenating Systems of Isocyanate and Epoxy Substances

Stiren-Butadiyen-Stiren İçeriğinin Bitümün Kırılmış Yüzey Morfolojisine Etkilerinin İncelenmesi

Aging Mechanism and Properties of SBS Modified Bitumen under Complex Environmental Conditions

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