Performance evaluation of fatigue resistance of asphalt mixtures modified by SBR/PP polymer blends and SBS

Vamegh, Mostafa; Ameri, Mahmoud; Naeni, Seyed Farhad Chavoshian

doi:10.1016/j.conbuildmat.2019.03.111

Cited by 66 publications

(18 citation statements)

References 26 publications

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“…Increasing traffic demand, harsh weather conditions, and the tendency for infrastructure operators to reduce the cost (and, therefore, the frequency) of maintenance are among the major reasons for asphalt performance improvement strategies [ 3 ]. This has motivated researchers to seek ways to modify conventional asphalt binders to improve their performance and extend their service life [ 1 , 5 ]. In this regard, polymers, which are one of the most common materials used in asphalt modification, have significantly enhanced asphalt mixtures in terms of performance [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Performance Evaluation of Asphaltenes-Modified Asphalt Binders

2020

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Asphalt binder comprises four main fractions—asphaltenes (A), saturates (S), aromatics (A), and resins (R)—referred to as “SARA”. Asphaltenes plays an important role in determining the linear viscoelastic behavior of asphalt binders. In this research, asphaltenes are added as a distinct modifier to improve the performance properties of asphalt binder. The modified binders are aged using a rolling thin film oven. A dynamic shear rheometer is then used to measure the rheological properties of the binders at high temperatures. Changes in the chemical composition of the modified binders are also studied through the determination of SARA fractions, using precipitation and gravity-driven chromatography methods. The rheological results show that asphaltenes improve the stiffness and elasticity of asphalt binder. It is also shown that the addition of asphaltenes raises the high Performance grade (PG) temperature of the asphalt binder, with every 6% of asphaltenes added resulting in a one-interval increase in high PG temperature grade. SARA analysis shows that the increase in polar fraction content due to the addition of asphaltenes causes the stiffness, elasticity, and viscosity of asphalt binders to increase. The results indicate that asphaltenes are an effective yet inexpensive additive to improve asphalt binder properties at high temperatures.

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Section: Introductionmentioning

confidence: 99%

High-Temperature Performance Evaluation of Asphaltenes-Modified Asphalt Binders

2020

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“…e binder that was modified does not deform due to its high level of viscosity. erefore, bitumen having less viscosity shows greater fatigue life compared to modified bitumens having greater viscosity [51,52]. 10, applying soybean oil increases the samples' permanent deformation because the stiffness of the mixture decreases, and this in turn decreases the strength of mixture versus permanent deformation.…”

Section: Las Results Tables 9 and 10 Present Las Test Resultsmentioning

confidence: 99%

“…One of the outcomes of ITS is FE, which can be calculated from the area under the load-deflection curve to failure load through the following [51]:…”

Section: Its Testmentioning

confidence: 99%

Influence of Soybean Oil on Binder and Warm Mixture Asphalt Properties

Babagoli

Ameli

2021

Advances in Materials Science and Engineering

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To produce a usual hot mix asphalt, significant amount of energy is used, which causes air pollution. As a result, warm mix asphalt (WMA) is introduced to reduce the mixing and compaction temperature of the mixture. On the one hand, accumulation of waste oil in the ground occupies a large space in the Earth. After the process of frying the oil, if the by-product is not controlled properly, it leads to the pollution of the environment. Hence, utilization of this waste oil can be considered as a sustainable path to dealing with the risk. The main goal of the current research is to evaluate the possibility of exploiting soybean oil to reduce the mixing and compaction temperature of mixtures and produce warm mix asphalt (WMA). Moreover, the rheological and performance properties of mixtures containing soybean are evaluated in this study. The AC-60/70 and 85/100 binders are modified by soybean oil (0%, 1.5%, 2.5%, and 3.5% by weight of binder). Several binder tests are used to measure the physical and rheological behaviors of binders, such as penetration grade, softening point, temperature susceptibility, rotational viscosity (RV), Multiple Stress Creep Recovery (MSCR), and Linear Amplitude Sweep (LAS) tests. Besides, several mixture tests are used to evaluate the performance of the mixture, including four-point bending beam fatigue (FPB), resilient modulus (Mr), indirect tensile strength (ITS), dynamic creep, and wheel track tests. Through MSCR test results, at two stress levels, the Jnr parameter increases as the soybean oil is added to the binder. The results of the LAS test revealed that the fatigue life of binders increases by addition of soybean oil. There is no significant difference between the results of new and waste oil. This in turn makes possible reducing soybean oil production and consumption, and instead frying oil (waste) is reused, which displays no significant difference in terms of chemical and physical properties. Also, the performance test of mixtures indicated that as the soybean oil is added to the mixture, the rutting performance decreases and fatigue performance increases. Based on the results, it is recommended to use 1.5% soybean oil in asphalt mixtures without compromising the performance of the mixture. ANOVA results showed that the warm additive had meaningful effects on MR, ITS, and FE; the same was true for the effects of the warm additive-binder type interaction.

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“…(2) SBR latex Styrene-butadiene rubber (SBR) latex was a stable emulsion made from butadiene and styrene polymerized at low temperature. Related studies had shown that the lipophilic groups of SBR were compatible with some linear paraffins in asphalt, which could improve the low temperature performance of the mixture [18]. The SBR used was imported styrene-butadiene latex with a solid content of 65% and a density of 0.95 ± 0.02 g/cm 3 .…”

Section: Additive (1) Recycling Agentmentioning

confidence: 99%

Research on Low Temperature Performance of Emulsified Asphalt Cold Recycled Mixture and Improvement Measures Based on Fracture Energy

et al. 2020

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At present, there are no specific indicators and requirements for the low-temperature crack resistance of emulsified asphalt cold recycled mixture (CRME) in the Chinese road mixture specifications. In order to expand the application of this technology in the asphalt surface layer in cold areas, this paper studied the influence of 10 influencing factors on the low-temperature anti-cracking performance of CRME through the semicircular bending test (SCB) with fracture energy as the evaluation index. The research results show that the fracture energy index of the SCB test can be used to evaluate the low temperature crack resistance of CRME. After 10 kinds of influencing factors were analyzed, it was found that the biggest factor affecting the low-temperature cracking resistance of the mixture was the recycling agent, which had an effect on the fracture energy index of over 60%. Followed by cement, fiber and compaction work, the degree of influence exceeded 30%. Finally, combined with engineering application experience, some specific measures to improve the low-temperature anti-cracking performance of CRME were proposed.

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Performance evaluation of fatigue resistance of asphalt mixtures modified by SBR/PP polymer blends and SBS

Cited by 66 publications

References 26 publications

High-Temperature Performance Evaluation of Asphaltenes-Modified Asphalt Binders

High-Temperature Performance Evaluation of Asphaltenes-Modified Asphalt Binders

Influence of Soybean Oil on Binder and Warm Mixture Asphalt Properties

Research on Low Temperature Performance of Emulsified Asphalt Cold Recycled Mixture and Improvement Measures Based on Fracture Energy

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