Investigation of influence factors on low temperature properties of SBS modified asphalt

Lin, Peng; Huang, Weidong; Li, Yi; Tang, Naipeng; Xiao, Feipeng

doi:10.1016/j.conbuildmat.2017.06.118

Cited by 89 publications

(30 citation statements)

References 25 publications

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“…Therefore, in this study, the carbonyl index (Ico) and sulfoxide index (Iso) were employed to evaluate the oxidation level of base asphalt and a polymer damage index (IB/S) was used to reveal the degradation of SBS polymer. SBS consists of polybutadiene (PB) and polystyrene (PS), in which the PS segment possesses a corresponding peak at 699 cm -1 and PB segment possess a peak at 965 cm -1 (Lin et al 2018(Lin et al , 2017Lamontagne et al 2001;Yut and Zofka 2011). As the unsaturated C=C bond on the PB segment is an easy target for oxygen, it can be aged and subsequently degraded.…”

Section: Fourier Transform Infrared (Ft-ir) Spectroscopymentioning

confidence: 99%

Laboratory Evaluation of the Effects of Long-Term Aging on High-Content Polymer-Modified Asphalt Binder

Lin

Huang

Liu

et al. 2020

J. Mater. Civ. Eng.

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The most common polymer-based modifier for asphalt binders is the styrene-butadiene-styrene (SBS), which owns superior mechanical characteristics to asphalt, such as increased toughness and resistance against permanent deformation. These properties improved further when higher amounts of SBS are incorporated in asphalt. Although this type of asphalt binders, named high content polymer modified asphalt (HCPMA) binders are used mainly for porous pavements, limited research on their ageing performance has been conducted. In this paper, Gel Permeation Chromatography (GPC), Fourier Transform Infrared (FTIR) and Dynamic shear rheology (DSR) were used to explore the evolution of chemical and rheological properties of HCPMA along with the ageing process and to comprehend factors affecting ageing. Firstly, this study identified that the ageing of HCPMA was a combination of oxidation of base asphalt and degradation of SBS polymer leading to an increase and a decrease of elasticity, respectively. The degradation of SBS happened mostly at the beginning and slowed down after ageing in Pressure Ageing Vessel (PAV)for 20 hours, which resulted in worst rutting resistance for HCPMA. The second finding is that, when SBS content was higher than 7.5%, more than half of SBS polymer remained even after 80 hours of PAV ageing. Although the molecular weight of SBS decreased from 230,000 to 70,000 due to the degradation, its modification effect was still significant. Thirdly, highly modification of SBS can retard the oxidation and hardening of base asphalt, especially from origin to first PAV aging state. Finally, Principal Component Analysis showed ten parameters used in this study could be explained by two principals: SBS content and asphalt ageing level. Based on PCA results, the complex modulus (G*) or phase angle (δ) of HCPMA can be well fitted (R 2 >0.7) by the exponential function of SBS content and ageing index.

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Section: Fourier Transform Infrared (Ft-ir) Spectroscopymentioning

confidence: 99%

Laboratory Evaluation of the Effects of Long-Term Aging on High-Content Polymer-Modified Asphalt Binder

Lin

Huang

Liu

et al. 2020

J. Mater. Civ. Eng.

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“…Results showed that TPU could improve aging resistance using Fourier-transform infrared (FTIR) spectroscopy [11]. Among various polymer modifiers, styrene-butadiene-styrene (SBS) has become the most widely used polymer modifier due to its better pavement performance [12,13,14]. Regarding SBS-modified asphalt, Zhang et al [15] investigated SBS-modified bitumen systematically and the results were analyzed and quantified through fluorescence microscopy.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Styrene-Butadiene-Styrene-Modified Stone Mastic Asphalt with Basalt Fiber Using Different Compaction Methods

et al. 2019

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Superpave gyratory compaction (SGC) and Marshall compaction methods are essentially designed according to volumetric properties. In spite of the similarity, the optimum asphalt contents (OAC) of the two methods are greatly affected by the laboratory compaction process, which would further influence their performance. This study aims to evaluate the performance of styrene-butadiene-styrene (SBS)-modified stone mastic asphalt (SMA) with basalt fiber by using SGC and Marshall compaction methods. Basalt fiber was proved to improve and strength the basic properties of SBS-asphalt according to test results of asphalt binder. The effects of SGC and Marshall compaction methods on OAC and volumetric properties, i.e., density, air voids (VA), voids in mineral aggregates (VMA), and voids filled with asphalt (VFA), were evaluated in detail. Finally, the pavement performance of asphalt mixture prepared by SGC and Marshall compaction methods were compared in order to analyze the high-temperature creep, low-temperature splitting, and moisture stability performance. Results showed that the OAC of SGC (~5.70%) was slightly lower than that of Marshall method (5.80%). Furthermore, the pavement performance of SGC specimens were improved to a certain extent compared with Marshall specimens, indicating that SGC has a better compaction effect and mechanical performance.

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“…On the other hand, it is obvious that SBS-modified asphalt has disadvantages in terms of compatibility and storage stability [9]. Another problem is that modified asphalt with high-content SBS has poor workability and low economic efficiency which further limits the application of SBS copolymer [10,11]. Recently, researchers proposed that other additives can be added into SBS-modified asphalt to prepare complex modified asphalt which can alleviate the stability issue and further improve the pavement performance of SBS-modified asphalt.…”

Section: Introductionmentioning

confidence: 99%

Rheological Properties, Compatibility, and Storage Stability of SBS Latex-Modified Asphalt

et al. 2019

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A styrene-butadiene-styrene (SBS) latex modifier can be used for asphalt modification due to the fact of its energy-saving, construction convenience, and economic advantages. The objective of this study was to investigate the influence of asphalt type and SBS latex dosage on the rheological properties, compatibility, and storage stability of asphalt through temperature and frequency sweep, steady-state flow, multiple stress creep and recovery (MSCR) tests, Cole-Cole plots and thermal storage tests. The results indicated that high SBS latex content is beneficial for improving anti-rutting, anti-fatigue, viscous flow resistance, and elastic recovery abilities of modified asphalt. The chemical composition of asphalt had a significant effect on the properties of the SBS latex-modified asphalt. High asphaltenes and low resins were favorable to enhancing anti-rutting and recovery properties but weakened the anti-fatigue, compatibility, and storage stability of modified asphalt. Furthermore, compared to SBS particle-modified asphalt, SBS latex-modified asphalt had greater rutting and fatigue resistance. However, SBS latex-modified asphalt had some disadvantages in compatibility and storage stability. Comprehensively considering the balance of viscoelastic properties, compatibility, and storage stability of SBS latex-modified asphalt, the mixing dosage of SBS latex modifier is recommended at 4.0 wt% which could feasibly replace SBS particle in asphalt modification.

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Investigation of influence factors on low temperature properties of SBS modified asphalt

Cited by 89 publications

References 25 publications

Laboratory Evaluation of the Effects of Long-Term Aging on High-Content Polymer-Modified Asphalt Binder

Laboratory Evaluation of the Effects of Long-Term Aging on High-Content Polymer-Modified Asphalt Binder

Performance Evaluation of Styrene-Butadiene-Styrene-Modified Stone Mastic Asphalt with Basalt Fiber Using Different Compaction Methods

Rheological Properties, Compatibility, and Storage Stability of SBS Latex-Modified Asphalt

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