Comparative Study of Thermal-Oxidative Aging and Salt Solution Aging on Bitumen Performance

Zhang, Xuemei; Hoff, Inge

doi:10.3390/ma14051174

Cited by 17 publications

(12 citation statements)

References 41 publications

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“…The service temperature limit of bitumen depends on the minimum temperature that bitumen satisfies the demand of m ≥ 0.3 and S ≤ 300 MPa [ 34 , 35 ]. As seen in Figure 8 , all binders complied with a −18 °C limited temperature, but did not conform to a −24 °C limited temperature.…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2021

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SBS-modified bitumen (SMB) is susceptible to aging, which seriously influences its service performance and life. In order to strengthen the anti-aging ability of SMB, triethoxyvinylsilane was designed to organically modify layered double hydroxides (LDHs) and was applied to modify SMB. The dispersibility and storage stability of LDHs in SMB were markedly enhanced after triethoxyvinylsilane organic modification, and the compatibility and storage stability of SBS in bitumen were simultaneously enhanced. Compared with SMB, the introduction of LDHs and organic LDHs (OLDHs) could ameliorate the high-temperature properties of SMB, and the thermostability of SBS in bitumen at a high temperature was also distinctly improved, especially OLDHs. After aging, due to the oxidation of molecular bitumen and the degradation of molecular SBS, SMB became hardened and brittle, and the rheological properties were significantly deteriorated, which had serious impacts on the performance of SMB. LDHs can mitigate the detriment of aging to bitumen and SBS, and the deterioration of the rheological properties of SMB is obviously alleviated. As a result of the better dispersibility and storage stability, OLDHs exerted superior reinforcement of the anti-aging ability of SMB.

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Section: Resultsmentioning

confidence: 99%

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

et al. 2021

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“…Penetration, softening point, and complex viscosity are three typical physical parameters characterising the physical properties of bitumen [ 30 ]. The effect of acid rain on the physical properties of the bitumen is shown in Figure 3 .…”

Section: Resultsmentioning

confidence: 99%

“…eters characterising the physical properties of bitumen [30]. The effect of acid rain on the physical properties of the bitumen is shown in Figure 3.…”

Section: The Physical Properties Of the Bitumenmentioning

confidence: 99%

Response and Deterioration Mechanism of Bitumen under Acid Rain Erosion

2021

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Acid rain as an important environmental issue has a negative impact on bitumen performance, thereby shortening the service life of asphalt pavements. Thus, this research aims to investigate the response of bitumen to acid rain and its deterioration mechanism. For this purpose, the simulated acid rain was prepared to erode neat bitumen and short-term aged bitumen. The hydrogen ion concentration of the acid rain, and the morphological, physical, chemical, and rheological properties of the bitumen were evaluated by means of a pH meter, scanning electron microscopy, physical tests, Fourier transform infrared radiation with attenuated total reflectance, and dynamic shear rheometer. The results showed that bitumen properties were severely affected by acid rain, and the changes in bitumen properties were highly related to the erosion time, leading to a reduction in pH value by 0.2 of residual acid rain, rougher bitumen surface, and stiffer bitumen with more oxygen-containing functional groups and fewer carbonyl acid groups (around 10% decrement) after 90 days erosion. These changes contributed to two deterioration mechanisms: oxidation and dissolution of carbonyl acid. Oxidation and dissolution are, respectively, the dominant actions for neat bitumen and aged bitumen during the erosion process, which eventually leads to various responses to acid rain.

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“…Sodium chloride solution at 10 wt% is the concentration of salt that is commonly found on road pavements as a result of winter maintenance operations ( 31 , 32 ); the corresponding solution was created in the laboratory by mixing salt solid and distilled water with a ratio of 1:9. The testing samples were then submerged in water inside a plastic box filled with the prepared solution and were put in a thermostatically controlled cabinet at 0°C.…”

Section: Methodsmentioning

confidence: 99%

Laboratory Evaluation of Mechanical Properties of Asphalt Mixtures Exposed to Sodium Chloride

Zhang

Chen

Barbieri

et al. 2022

Transportation Research Record

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Spreading sodium chloride salt is one of the most effective operations to tackle ice formation on the surface of a road pavement during cold seasons, thus ensuring safer driving conditions. However, in addition to negative environmental impact, sodium chloride solution could influence the properties and durability of asphalt mixtures. Based on these premises, this laboratory study aims to characterize the mechanical properties of different asphalt mixtures exposed to sodium chloride solution. Four types of asphalt mixtures were immersed in 10 wt% sodium chloride solution for four cycles. The macroscopic surface, moisture absorption, Marshall stability, Marshall quotient, dynamic modulus, and resilient modulus were evaluated. The behavior of the asphalt mixtures was severely deteriorated by the exposure to sodium chloride solution and immersion cycles, resulting in damaged surface, loose structure, degraded stability, and stiffness. The mixture with polymer modified asphalt binder showed the best overall performance. Traditional asphalt mixtures with neat bitumen showed a better performance to resist sodium chloride solution compared with stone mastic asphalt mixtures with neat bitumen because of their dense structure, whereas traditional asphalt mixtures with polymer modified bitumen had a sensitivity to sodium chloride solution similar to that of stone mastic asphalt mixtures with polymer modified bitumen. Based on the findings of this study, using asphalt mixtures with polymer modified bitumen is recommended when road maintenance operations entailing the use of sodium chloride are envisaged.

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Comparative Study of Thermal-Oxidative Aging and Salt Solution Aging on Bitumen Performance

Cited by 17 publications

References 41 publications

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

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

Response and Deterioration Mechanism of Bitumen under Acid Rain Erosion

Laboratory Evaluation of Mechanical Properties of Asphalt Mixtures Exposed to Sodium Chloride

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