Rheological and aging properties of ultraviolet absorber/styrene–butadiene–styrene–modified bitumens

Abstract

The prevention of the ultraviolet (UV) aging of styrene–butadiene–styrene (SBS)‐modified bitumen is of great significance because UV aging is considered to be a critical factor in the deterioration of the performance of bituminous roads. In this study, we selected two UV absorbers (octabenzone and bumetrizole) as modifiers to evaluate their effects on the rheological and UV‐aging properties of different SBS‐modified bitumens (linear and radial types) by means of dynamic shear rheological testing. The thermooxidative aging of the binders was also investigated through thin‐film oven testing. The results show that for the linear‐ and radial‐SBS‐modified bitumens, octabenzone only enhanced their elasticity at high temperatures, but bumetrizole could increase the elastic response at intermediate temperatures on the one hand and the viscous response at high temperatures on the other hand. The UV aging of the radial‐SBS‐modified bitumens could effectively be alleviated by both octabenzone and bumetrizole, whereas that of the linear ones could only be improved by bumetrizole. The influence of the UV absorbers on the thermooxidative‐aging properties of the SBS‐modified bitumens was dependent on the types of UV absorbers and SBS polymers. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

SBS Modified Bitumen with Organic Layered Double Hydroxides: Compatibility and Aging Effects on Rheological Properties

“…However, the low-temperature performance of SMB was decreased after adding a large amount of MMT. Feng et al [ 14 ] discovered that UV absorbers can reduce the UV aging of SMB, but the effect of UV absorbers was not universal, which only worked for specific types of SMB. In addition, some inorganic nanomaterials were reported to improve the aging resistance of SMB in some research, such as nano-SiO 2 , nano-ZnO, nano-TiO 2 and so on [ 15 , 16 ].…”

Investigation of anti-aging of SBS modified bitumen containing surface organic layered double hydroxide

“…In recent years, some antiaging agents have been utilized to improve the anti-aging ability of SMB, such as antioxidants, UV absorbents, inorganic nanoparticles, layered silicate, and so on. [9][10][11] These modifying agents can all improve the anti-aging ability of SMB to different extents, but there are some imperfections in these modifying agents, for instance, antioxidants can only improve the thermal oxidation aging resistance of SMB and the sustaining action is limited. The improvement effect of UV absorbents on the anti-aging is closely linked to the types of SMB.…”

“…13,14 Layered silicate is harmful to the low temperature property of SMB. 9,12 These deciencies affect the improving effectiveness of these modifying agents on the antiaging ability of SMB, and eventually astrict their application in SMB.…”

Workability and Rheological Property Evolution of Active Rejuvenated Styrene–Butadiene–Styrene-Modified Bitumen in the Early Stage

“…Styrene–butadiene–styrene triblock copolymer (SBS)-modified bitumen (SMB) has been widely used in the construction of high-grade highways for its excellent performance. However, the performance of SMB would also gradually deteriorate with the influence of high temperature, ultraviolet rays, and overload over time, − which would shorten its service life. In addition, the pavement renovation will produce large amounts of the waste SBS-modified bitumen mixture.…”