Thermal storage stability and rheological properties of multi-component styrene-butadiene-styrene composite modified bitumen

Xu, Ning; Wang, Hainian; Chen, Yu; Miljković, Miomir; Feng, Ponan; Ding, Heyang

doi:10.1016/j.conbuildmat.2022.126494

Cited by 17 publications

(4 citation statements)

References 41 publications

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“…According to Chinese standard JTG-E20-2011 (T 0661-2011) and some previous studies, the thermal storage stability of modified asphalt is evaluated by a segregation test [ 23 , 24 ]. First, the base asphalt, DM1, DM2, DM3 and DM4 were injected into aluminum tubes and sealed, and stored at 163 ± 5 °C for 48 h. Then the samples were left to cool at −5 ± 2 °C for 4 h. Finally, the tubes were cut into three equal parts for softening point testing, rotational viscosity test and temperature scan test.…”

Section: Methodsmentioning

confidence: 99%

Multi-Scale Characterization of High-Temperature Properties and Thermal Storage Stability Performance of Discarded-Mask-Modified Asphalt

Hui

Yang

et al. 2022

Materials

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In the context of the global pandemic of COVID-19, the use and disposal of medical masks have created a series of ethical and environmental issues. The purpose of this paper is to study and evaluate the high temperature properties and thermal storage stability of discarded-mask (DM)-modified asphalt from a multi-scale perspective using molecular dynamics (MD) simulation and experimental methods. A series of tests was conducted to evaluate the physical, rheological, thermal storage stability and microscopic properties of the samples. These tests include softening point, rotational viscosity, dynamic shear rheology (DSR), Fourier transform infrared (FT-IR) spectroscopy and molecular dynamics simulation. The results showed that the DM modifier could improve the softening point, rotational viscosity and rutting factor of the asphalt. After thermal storage, the DM-modified asphalt produced segregation. The difference in the softening point between the top and bottom of the sample increased from 2.2 °C to 17.1 °C when the DM modifier admixture was increased from 1% to 4%. FT-IR test results showed that the main component of the DM modifier was polypropylene, and the DM-modified asphalt was mainly a physical co-blending process. MD simulation results show that the DM modifier can increase the cohesive energy density (CED) and reduce the fractional free volume (FFV) of asphalt and reduce the binding energy between base asphalt and DM modifier. Multi-scale characterization reveals that DM modifiers can improve the high temperature performance and reduce the thermal storage stability of asphalt. It is noteworthy that both macroscopic tests and microscopic simulations show that 1% is an acceptable dosage level.

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Section: Methodsmentioning

confidence: 99%

Multi-Scale Characterization of High-Temperature Properties and Thermal Storage Stability Performance of Discarded-Mask-Modified Asphalt

Hui

Yang

et al. 2022

Materials

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“…They were used to analyze the low temperature rheological behaviors of the asphalt before and after UV aging. According to the studies by Li [ 36 ] and Xu [ 37 ], the ratio λ(λ = m/S) can be used to determine the low temperature performance when it is different between m and S. In general, the low temperature performance increases with the high λ value. Therefore, the ratio λ was determined in this study.…”

Section: Methodsmentioning

confidence: 99%

Evaluating the Effects of Polyphosphoric Acid (PPA) on the Anti-Ultraviolet Aging Properties of SBR-Modified Asphalt

Niu

Zhu

et al. 2023

Materials

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The ultraviolet (UV) aging of asphalt is an important factor affecting the long-term performance of asphalt pavement, especially in high altitude cold regions. The current studies have reported that styrene butadiene rubber-modified asphalt (SBRMA) has a good cracking resistance at low temperatures. In addition, polyphosphoric acid (PPA) is an effective modifier that can enhance the anti-UV aging properties of asphalt. However, the understanding of the improvement mechanism of PPA on the anti-aging of SBRMA remains unclear. Therefore, this study aimed to evaluate the effect of PPA on the UV aging resistance of SBRMA. The rheological properties of PEN90 asphalt(90#A), SBRMA, and PPA/SBR modified (PPA/SBR-MA) before and after UV aging were evaluated by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The molecular weight and chemical structure of 90#A, SBRMA, and PPA/SBR-MA were determined by Fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC), and the interaction and modification mechanism of the modifiers were analyzed. The rheological analysis shows that the high and low temperature performances of SBRMA are improved by adding PPA, and PPA also significantly reduces the sensitivity of SBRMA to UV aging. The microscopic test results show that PPA has a complex chemical reaction with SBRMA, which results in changes in its molecular structure. This condition enhances SBRMA with a more stable dispersion system, inhibits the degradation of the polymer macromolecules of the SBR modifier, and slows down the aging process of base asphalt. In general, PPA can significantly improve the anti-UV aging performance of SBRMA. The Pearson correlations between the aging indexes of the macro and micro properties are also significant. In summary, PPA/SBRMA material is more suitable for high altitude cold regions than SBRMA, which provides a reference for selecting and designing asphalt pavement materials in high altitude cold regions.

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“…This situation, which only changes the result numerically, has caused a dilemma among researchers. Therefore, in some studies [12,44,45], 𝑆(𝑡)/m-value value was used to evaluate low-temperature performance, while in others [46][47][48] mvalue/𝑆(𝑡) value was used. Although this preference does not bring any technical differences, the use of the 𝜆 = 𝑆(𝑡)/m-value parameter is preferred in this study as it expresses the numerically obtained data in a more easily understandable way.…”

Section: Bending Beam Rheometer (Bbr) Testmentioning

confidence: 99%

Investigation of Rutting and Low Temperature Cracking Behavior of Reactive Ethylene Terpolymer and Waste Cooking Oil Modified Bitumen

Kumandaş,

Çavdar,

Şahan

et al. 2024

Turkish Journal of Civil Engineering

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With sustainability being the most crucial issue of recent years, the use of waste materials in bitumen modification is increasing and becoming widespread. In this experimental study, it was aimed to investigate the high- and low-temperature behavior of bitumen samples modified with waste cooking oil (WCO), reactive ethylene terpolymer (RET), and polyphosphoric acid (PPA). Accordingly, the multiple stress creep and recovery (MSCR) test and the bending beam rheometer (BBR) test were conducted. Depending on the increasing WCO ratio, the Jnr,R%,∆T_c,and λ parameters of modified bitumens were examined in detail. It was observed that with increasing WCO ratio,the Jnr value increased, and elastic recovery and stiffness decreased. In addition, it has been determined that this composite-modified bitumen is resistant to heavy traffic loads and has sufficient flexibility at low temperatures.

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Thermal storage stability and rheological properties of multi-component styrene-butadiene-styrene composite modified bitumen

Cited by 17 publications

References 41 publications

Multi-Scale Characterization of High-Temperature Properties and Thermal Storage Stability Performance of Discarded-Mask-Modified Asphalt

Multi-Scale Characterization of High-Temperature Properties and Thermal Storage Stability Performance of Discarded-Mask-Modified Asphalt

Evaluating the Effects of Polyphosphoric Acid (PPA) on the Anti-Ultraviolet Aging Properties of SBR-Modified Asphalt

Investigation of Rutting and Low Temperature Cracking Behavior of Reactive Ethylene Terpolymer and Waste Cooking Oil Modified Bitumen

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