Physical and chemical properties of plasma treated crumb rubbers and high temperature characteristics of their rubberised asphalt binders

Xiao, Feipeng; Yao, Shenglei; Wang, Jingang; Wei, Jianming; Amirkhanian, Serji

doi:10.1080/14680629.2018.1507922

Cited by 62 publications

(15 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The rheological parameters, such as storage modulus G’, loss modulus G”, rust resistance factor G * /sin δ and phase angle δ , were obtained by temperature scanning experiments of WPU/SBS composite modified asphalt with DSR [ 26 ], which were used to characterize the viscoelasticity and rutting resistance of asphalt binder [ 27 ]. The variation of rheological parameters of modified asphalt is presented in Figure 5 and Figure 6 .…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Properties and Micro-Characteristics of Waste Polyurethane/Styrene-Butadiene-Styrene Composite Modified Asphalt

2021

View full text Add to dashboard Cite

In order to solve the problems caused by asphalt diseases and prolong the life cycle of asphalt pavement, many studies on the properties of modified asphalt have been conducted, especially polyurethane (PU) modified asphalt. This study is to replace part of the styrene-butadiene-styrene (SBS) modifier with waste polyurethane (WP), for preparing WP/SBS composite modified asphalt, as well as exploring its properties and microstructure. On this basis, this paper studied the basic performance of WP/SBS composite modified asphalt with a conventional performance test, to analyze the high- and low-temperature rheological properties, permanent deformation resistance and storage stability of WP/SBS composite modified asphalt by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The microstructure of WP/SBS composite modified asphalt was also observed by fluorescence microscope (FM) and Fourier transform infrared spectroscopy (FTIR), as well as the reaction between WP and asphalt. According to the results of this study, WP can replace SBS as a modifier to prepare WP/SBS composite modified asphalt with good low-temperature resistance, whose high-temperature performance will be lower than that of SBS modified asphalt. After comprehensive consideration, 4% SBS content and 15% WPU content (4 S/15 W) are determined as the suitable types of WPU/SBS composite modified asphalt.

show abstract

Section: Resultsmentioning

confidence: 99%

Evaluation of Properties and Micro-Characteristics of Waste Polyurethane/Styrene-Butadiene-Styrene Composite Modified Asphalt

2021

View full text Add to dashboard Cite

show abstract

“…Styrene butadiene copolymer (SBS) and styrene butadiene rubber are common elastomers used to improve asphalt’s properties [ 23 , 24 , 25 , 26 ]. Moreover, to utilize the waste, crumb rubber is also used to improve physical properties of asphalt [ 11 , 25 , 27 , 28 ]. The crumb rubber, which is in the form of fully crosslinked rubber, is added into the asphalt as particles resulting in a lower degree of processability and the possibility of phase separation occurring during storage if kept for a long duration.…”

Section: Introductionmentioning

confidence: 99%

Asphalt Incorporation with Ethylene Vinyl Acetate (EVA) Copolymer and Natural Rubber (NR) Thermoplastic Vulcanizates (TPVs): Effects of TPV Gel Content on Physical and Rheological Properties

2021

View full text Add to dashboard Cite

Plastic waste has been incorporated with asphalt to improve the physical properties of asphalt and alleviate the increasing trend of plastic waste being introduced into the environment. However, plastic waste comes in different types such as thermoplastic or thermoset, which results in varied properties of polymer modified asphalt (PMA). In this work, four thermoplastic vulcanizates (TPVs) were prepared using different peroxide concentrations to produce four formulations of gel content (with varying extent of crosslinked part) in order to imitate the variation of plastic waste. All four TPVs were then mixed with asphalt at 5 wt% thus producing four formulations of PMA, which went through physical, rheological, and storage stability assessments. PMA with higher gel content possessed lower penetration and higher softening temperature, indicating physically harder appearance of PMA. Superpave parameters remained unchanged among different gel content PMA at temperatures of 64, 70, and 76 °C. PMA with any level of gel content had lower Brookfield viscosity than PMA without gel content at a temperature of 135 °C. Higher gel content resulted in shorter storage stability measured with greater different softening temperatures between top and bottom layers of PMA after 5 days of 163 °C storage. This study shows that asphalt with thermoset plastic waste is harder and easier to pave, thus making the non-recycling thermoset plastic waste more useful and friendly to the environment.

show abstract

“…The use of crumb rubber (CR) in asphalt pavements has addressed solid waste management and reduced environmental pollution 1 . CR also improves the ageing resistance accompanied with a significant high‐and low‐temperature property of the asphalt 2 .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of liquid rubber content and molecular weight on rheological properties of asphalt

Ma²,

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

To evaluate the effect of liquid styrene‐butadiene rubber (LSBR) on the rheological performance of bitumen, LSBRs with molecular weights of 20,000 (LA) and 50,000 g/mol (LB) are blended into the virgin bitumen. The rheological effect regarding LSBR content and the molecular weight of the bitumen was then conducted by dynamic shear rheometer (DSR) test and a bending beam rheometer (BBR) test, respectively. Short‐term and long‐term aging tests were used to simulate the asphalt aging with modification of LSBR, and the variations of asphalts function groups were detected by Fourier Transform Infrared spectroscopy (FT‐IR). Results indicate that LSBR reduces the rutting and ageing resistance of the virgin bitumen. However, the blended LA and LB extensively enhance the crack resistance at low temperatures. Moreover, the LB modifier improves the fatigue performance of the asphalt more evidently, followed by LA, particularly at 2% mixing content (by weight of the virgin). Compared with LA, the added LB causes more deteriorating impact bitumen's rutting resistance, whereas LB increases the crack resistance at low temperatures. Of note, the LB‐modified bitumen exhibits less ageing sensitivity than the LA‐modified bitumen under a short‐term ageing simulation. However, the LA‐modified bitumen is less sensitive to the long‐term ageing test.

show abstract

Physical and chemical properties of plasma treated crumb rubbers and high temperature characteristics of their rubberised asphalt binders

Cited by 62 publications

References 29 publications

Evaluation of Properties and Micro-Characteristics of Waste Polyurethane/Styrene-Butadiene-Styrene Composite Modified Asphalt

Evaluation of Properties and Micro-Characteristics of Waste Polyurethane/Styrene-Butadiene-Styrene Composite Modified Asphalt

Asphalt Incorporation with Ethylene Vinyl Acetate (EVA) Copolymer and Natural Rubber (NR) Thermoplastic Vulcanizates (TPVs): Effects of TPV Gel Content on Physical and Rheological Properties

Evaluation of liquid rubber content and molecular weight on rheological properties of asphalt

Contact Info

Product

Resources

About