Effect of different organic layered double hydroxides on the anti-aging property of bitumen

Zhang, Canlin; Dong, Hongjun; Wang, Ting; Li, Yifei; Xu, Song; Zheng, Yuhai; Que, Yun; Chen, Yu

doi:10.1016/j.conbuildmat.2023.130316

Cited by 11 publications

(3 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Antioxidant intercalated LDHs-modified asphalt was prepared by the melt blending method. The asphalt was heated to 140 ± 5 • C, and the intercalated LDHs were gradually added by a high shear mixer at a 2000 r/min shear rate, and then, the shear rate was increased to 4000 r/min and sheared for 90 min [36]. The asphalts modified by LDHs, LDHs-1222, LDHs-TP, and LDHs-3 were denoted as LMB, LMB-1222, LMB-TP, and LMB-3, respectively.…”

Section: Preparation and Characterizations Of Antioxidant Intercalate...mentioning

confidence: 99%

Effects of Different Antioxidant Intercalated Layered Double Hydroxides on Anti-Aging Properties of Asphalt Binders

Liu,

Li,

Chen

2024

Buildings

View full text Add to dashboard Cite

This research aims to prepare different antioxidant intercalated layered double hydroxides (LDHs) and compare the thermal oxidation and ultraviolet (UV) aging resistances of different modified asphalts. The ion exchange technique was used to intercalate three different antioxidants: 3-(3,5-di-tert-butyl-4-carboxyphenyl) propionic acid, antioxidant 1222, and sodium dibutyl dithiocarbamate (rubber accelerator TP) into the interlayer of LDHs. The morphology, structures, UV blocking, and free radical scavenging properties of different antioxidant intercalated LDHs were characterized, respectively. The effects of the anti-aging agents on the physical properties (penetration, softening point, ductility, and viscosity); rheological behaviors (complex modulus and phase angle); and functional groups (C=O and S=O) of asphalt both before and after thermal oxidation aging and UV aging were systematically investigated. The results of the crystal structure and functional group analysis show that the three different antioxidants can be successfully inserted into the interlayer of LDHs without destroying their layered structures. Antioxidant intercalated LDHs exhibit a remarkable capacity for absorbing UV rays, coupled with a moderate ability to reflect UV light. Moreover, the inclusion of antioxidants into the interlayers of LDHs confers upon them the ability to scavenge free radicals. After 2 h of reaction, the free radical scavenging rates of LDHs-3, LDHs-1222, and LDHs-TP were 57.7%, 35.6%, and 17.1%, respectively. With an increase in the content of the antioxidant intercalated LDHs, the performance of the modified asphalt varies, and 4% is the optimal content of the anti-aging agents. Asphalts with the three antioxidant intercalated LDHs all had favorable storage stability, and their physical and rheological properties were improved after aging compared to LDHs-modified asphalt. The LDHs-3-modified asphalt showed the best anti-ultraviolet aging effect, while LDHs-1222-modified asphalt showed the best anti-thermal oxidation aging effect. This research lays the foundation for developing aging-resistant asphalt and improving the durability of asphalt pavement.

show abstract

Section: Preparation and Characterizations Of Antioxidant Intercalate...mentioning

confidence: 99%

Effects of Different Antioxidant Intercalated Layered Double Hydroxides on Anti-Aging Properties of Asphalt Binders

Liu,

Li,

Chen

2024

Buildings

View full text Add to dashboard Cite

show abstract

“…The optimal amount of the modifier in this case is 1-3 wt. % [74][75][76][77][78][79][80][81][82][83][84][85] .…”

Section: Inhibitors Of Bitumen Agingmentioning

confidence: 99%

The Problem of Road Bitumen Technological Aging and Ways to Solve It: A Review

Donchenko,

Grynyshyn,

Prysiazhnyi

et al. 2024

ChChT

View full text Add to dashboard Cite

This paper discusses the main features of technological aging of bitumen, in particular, the mechanisms and transformations that accompany this process. The main laboratory methods for modeling the above processes are considered. It is described how the technical essence of the methods has changed from the first developments to the present. A number of compounds that can be used as inhibitors of technological aging, including antioxidants and plasticizers, as well as some “natural” substances that have these properties, are presented.

show abstract

“…At the same time, preparation parameters, including the modifier dosage, preparation temperature, shear time, and shear rate, have a remarkable effect on the dispersion of modifiers in ABs [30]. Zhang et al [31] proposed that LDHs could enhance ABs' UV aging resistance, and the modification effect was enhanced with increases in LDHs. A study [32] showed that LDHs containing carbonate ions could reduce the negative impact of UV aging on ABs, especially when their content achieved more than 3 wt%.…”

Section: Introductionmentioning

confidence: 99%

Physical, Rheological, and Anti-Ultraviolet Aging Performance of Layered Double Hydroxides + Styrene Block Copolymer-Modified Asphalt Binders

Song,

Wu,

Chen

et al. 2023

Sustainability

View full text Add to dashboard Cite

To determine the preparation parameters of layered double hydroxides (LDHs) + styrene butadiene styrene block copolymer (SBS)-modified asphalt binders (MABs) in engineering applications and identify the structure of LDHs used in asphalt modification, this paper investigated the physical, rheological, and UV aging resistance of LDHs + SBS MABs under various preparation parameters. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and an ultraviolet-visible spectrophotometer (UV-vis) were used to characterize the structure and UV resistance of LDHs and D-LDHs (dissolving from LDHs + SBS MABs). The mechanical properties of LDHs + SBS MABs were studied based on penetration, ductility, softening point, and rotational viscosity tests. The rheological performance and UV aging resistance of LDHs + SBS MABs were assessed using the bending beam rheometer (BBR) test, direct tensile test (DTT), dynamic shear rheometer (DSR) test, and FTIR. The results demonstrated that the crystal and chemical structures of LDHs remain unchanged before and after use in asphalt modification. The optimal preparation parameters of LDHs + SBS MABs were as follows: a preparation temperature of 170 °C, a shearing time of 60 min, and a shearing rate of 4000 r/min. The high-temperature performance of LDHs + SBS MABs improved significantly with LDHs added, and the low-temperature performance slightly decreased. The viscosity of LDHs + SBS MABs with 4 wt% LDHs at 135 °C was 1.920 Pa·s, which was 47.4% higher than that of SBS MABs. The DTT results indicated that SBS MABs have the highest fracture energy (FE) value of 4873 J/m2, showing the best low-temperature cracking resistance. In comparison, the FE values of MABs doped with 3 wt% and 4 wt% LDHs are 4518 J/m2 and 4248 J/m2, respectively, just 7.3% and 12.8% lower than that of ABs without LDHs. The complex modulus aging index (CMAI) of MABs doped with 4% LDHs is 14.3%, which is 15.9% lower than that of SBS MABs, indicating that the anti-ultraviolet aging performance of LDHs + SBS MABs has been improved. FTIR analysis demonstrated that the relative content of C=O (RCC) and S=O (RCS) of LDHs + SBS MABs decreased drastically compared with SBS MABs, indicating that the UV aging resistance of LDHs + SBS MABs was largely enhanced. Furthermore, the segregation test result of 3wt% LDHs + SBS-modified asphalt is 0.3 °C, showing the best compatibility with asphalt.

show abstract

Effect of different organic layered double hydroxides on the anti-aging property of bitumen

Cited by 11 publications

References 46 publications

Effects of Different Antioxidant Intercalated Layered Double Hydroxides on Anti-Aging Properties of Asphalt Binders

Effects of Different Antioxidant Intercalated Layered Double Hydroxides on Anti-Aging Properties of Asphalt Binders

The Problem of Road Bitumen Technological Aging and Ways to Solve It: A Review

Physical, Rheological, and Anti-Ultraviolet Aging Performance of Layered Double Hydroxides + Styrene Block Copolymer-Modified Asphalt Binders

Contact Info

Product

Resources

About