Storage stability and anti-aging performance of SEBS/ organ-montmorillonite modified asphalt

Ke, Yunbin; Cao, Jitao; Xu, Song; Bian, Chongyu; Zhang, Chao; Jia, Xiaojuan

doi:10.1016/j.conbuildmat.2022.127875

Cited by 21 publications

(5 citation statements)

References 39 publications

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“…SEBS-modified asphalt exhibits similar improvements in rheological properties to SBS-copolymer modified asphalt binder. SEBS is more effective than SBS in enhancing the rutting resistance of asphalt binder but less effective in improving the fatigue properties [177]. SEBS also has some limitations, such as compatibility problems [7].…”

Section: Thermoplastic Elastomersmentioning

confidence: 99%

A Comprehensive Literature Review on Polymer-Modified Asphalt Binder

Emtiaz,

Imtiyaz,

Majumder

et al. 2023

CivilEng

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Due to periodic variations in temperature and heavy traffic loading, hot-mix asphalt (HMA) pavements undergo considerable distress during their service life. The rheological properties of asphalt binder, when subjected to complex physical and chemical processes, make it stiff and sometimes brittle, which ultimately plays a huge part in pavement deterioration. This phenomenon is commonly known as asphalt aging. Incorporating polymer modifiers with virgin asphalt can work as an effective means to change the binder properties and alleviate the issues related to asphalt aging. Different types of polymers, including elastomers, plastomers, and reactive polymers, can mixed in different combinations with the virgin asphalt to create polymer-modified binders (PMBs). In general, polymers are typically added to the virgin asphalt binder in PMB manufacturing at weight percentages ranging from 3% to 7%. Previous research suggests that many polymer-modified binders (PMBs) show great resiliency and perform extremely well during field and laboratory testing, although the complex nature of asphalt itself makes it significantly difficult to understand the relationship and compatibility of the asphalt–polymer system. This paper aims to develop a comprehensive literature review on the chemical aspects, microscopic structure, and compatibility of polymers with virgin asphalt. It was found that swelling, storage stability, blend morphology, and the polymer mixing technique play a great role in the compatibility of asphalt–polymer systems. Thermoplastic elastomers (e.g., styrene–butadiene–styrene) and plastomers (e.g., ethylene–vinyl acetate) are the most used polymer modifiers for asphalt binders. The compatibility of the polymer–asphalt system can be improved by sulfur vulcanization, antioxidants, hydrophobic clay minerals, functionalization, and reactive polymers, among other techniques.

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Section: Thermoplastic Elastomersmentioning

confidence: 99%

A Comprehensive Literature Review on Polymer-Modified Asphalt Binder

Emtiaz,

Imtiyaz,

Majumder

et al. 2023

CivilEng

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“…The softening point difference was then measured at the upper and lower sections of the segregation tube to assess the stability of the asphalt [30]. Fluorescence microscopy (FM) was utilized to observe the upper and lower sections of the asphalt in the segregation tube after segregation with a magnification of 50 µm, to assess the degree of asphalt segregation based on the dispersion concentration of the modified substances [31]. Two samples were taken from each of the upper and lower sections of the separation tube, and three points were taken for each sample.…”

Section: Storage Stability Testsmentioning

confidence: 99%

Synergistic Effects of Epoxidized Soybean Oil and Polyester Fiber on Crumb Rubber Modified Asphalt Using Response Surface Methodology

et al. 2023

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The incorporation of crumb rubber (CR) into asphalt pavement materials can improve the performance of asphalt pavement and generate environmental benefits. However, the storage stability of the crumb rubber asphalt (CRA) remains an issue that needs to be resolved. This study explores the interaction laws among various modified materials based on the response surface methodology. Optimal preparation dosages of each material are determined, and performance predictions and validations are conducted. The storage stability of the CRA compounded with epoxidized soybean oil (ESO) and polyester fiber (PF) is investigated by combining traditional compatibility testing methods with refined characterization methods. The results indicate that the modification of CRA exhibits better rheological properties when the percentages of CR, PF, and ESO are 22%, 0.34%, and 3.21%, respectively. The addition of ESO effectively complements the light components of CRA to improve asphalt compatibility, and the addition of PF alleviates the adverse effects of ESO’s softening effect on rheological properties through stabilization and three-dimensional strengthening. The scientifically compounded additions of ESO and PF can effectively enhance the storage stability and rheological properties of CRA, promoting the development of sustainable and durable roads.

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“…In particular, these silicates have shown promising results in improving the storage stability of polymer-modified asphalt. The unique structure of layered silicates allows them to disperse uniformly within the asphalt matrix, forming a stable network that enhances the overall performance of the asphalt mixture [20,21]. Among the most commonly used layered silicates are montmorillonite (MMT) and its organically modified derivatives [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…Among the most commonly used layered silicates are montmorillonite (MMT) and its organically modified derivatives [22][23][24]. Ke et al [20] employed organically modified montmorillonite (OMMT) to enhance the storage stability, high-temperature stability, and aging resistance of SEBS-modified asphalt. The research findings showed that the addition of 3 wt% OMMT reduced the 48-h softening point difference of SEBS-modified asphalt from 8.5 • C to 1.1 • C, significantly improving the storage stability of SEBS-modified asphalt.…”

Section: Introductionmentioning

confidence: 99%

Effect of an Organic Rectorite on the Properties of a Waste Engine Oil-Modified Asphalt

Jia,

Ling,

Yao

et al. 2023

Applied Sciences

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Using waste engine oil (WEO) to partially replace petroleum-based asphalt binders offers a promising solution to mitigate the environmental impact of waste WEO while reducing the dependence on non-renewable asphalt resources. To enhance the comprehensive properties of a modified asphalt containing 6 wt% WEO, an organic rectorite (OREC) with various contents was introduced to the modified asphalt system. The effect of OREC on the structure, storage stability, rheological properties, and self-healing property of WEO-modified asphalt were evaluated using a Fourier transform infrared spectrometer, softening point instrument, and rheometer. The results demonstrated that that no chemical reaction occurs between OREC and WEO-modified asphalt. The addition of OREC can enhance the storage stability and high-temperature stability while marginally decreasing the low-temperature cracking resistance and self-healing properties of WEO-modified asphalt. When the content of OREC increases to 2 wt%, the 48 h softening point difference value of the OREC + WEO composite-modified asphalt drops to 1.8 °C, and this composite-modified asphalt exhibits superior high-temperature rutting resistance, low-temperature cracking resistance, and self-healing property compared to the corresponding base asphalt. In summary, the addition of OREC can effectively offset the adverse effects of WEO on the properties of base asphalt.

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Storage stability and anti-aging performance of SEBS/ organ-montmorillonite modified asphalt

Cited by 21 publications

References 39 publications

A Comprehensive Literature Review on Polymer-Modified Asphalt Binder

A Comprehensive Literature Review on Polymer-Modified Asphalt Binder

Synergistic Effects of Epoxidized Soybean Oil and Polyester Fiber on Crumb Rubber Modified Asphalt Using Response Surface Methodology

Effect of an Organic Rectorite on the Properties of a Waste Engine Oil-Modified Asphalt

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