The effect of sea salt solution erosion on cohesion, chemical and rheological properties of SBS modified asphalt

In recent years, using rejuvenator sealer materials (RSMs) to recover the performance of aged asphalt on the pavement is becoming more and more popular. In this paper, four different RSMs were made and applied to rejuvenate the aged asphalt which experienced a PAV 20H process. Then the dynamic rheological characteristics of different binders were tested by the dynamic shear rheometer (DSR).The results indicated that the four RSM can recover the stress relaxation and fatigue factor of aged asphalt. But the rutting parameter decreased with the introduction of four RSMs.

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Impact of Ultraviolet Radiation on the Aging Properties of SBS-Modified Asphalt Binders

Polymers ◽

10.3390/polym11071111 ◽

2019 ◽

Vol 11 (7) ◽

pp. 1111 ◽

Cited By ~ 23

Author(s):

Huanan Yu ◽

Xianping Bai ◽

Guoping Qian ◽

Hui Wei ◽

Xiangbing Gong ◽

...

Keyword(s):

Rheological Properties ◽

Uv Radiation ◽

Asphalt Pavement ◽

Asphalt Binder ◽

Asphalt Binders ◽

Shrinkage Stress ◽

Uv Aging ◽

Modified Asphalt ◽

Aging Properties ◽

Sbs Modified Asphalt

Styrene Butadiene Styrene (SBS) polymer-modified asphalt binders have become widely used in asphalt pavement because of their advantages in high- and low-temperature performance and fatigue resistance. Asphalt pavement is inevitably exposed to sunlight and ultraviolet (UV) radiation during its construction and service life. However, consideration of the aging effect of UV radiation is still limited in current pavement design and evaluation systems. In order to evaluate the impact of UV radiation on the aging properties of SBS-modified asphalt binders, UV aging tests were performed on Rolling Thin Film Oven Test (RTFOT)-aged samples with different UV radiation intensities and aging times. Sixteen different groups of tests were conducted to compare the rheological properties and functional group characteristics of SBS-modified asphalt binders. Dynamic Shear Rheometer (DSR), Bending Beam Rheometer (BBR), FTIR, and SEM tests were conducted to evaluate the aging mechanisms in various UV aging conditions. The results found that UV radiation seriously destroys the network structure formed by the cross-linking effect in SBS-modified asphalt binders, which aggravates the degradation of SBS and results in a great change of rheological properties after UV aging. The nature of SBS-modified asphalt binder aging resulted from the degradation of SBS and the changes of asphalt binder base composition, which lead to the transformation of colloidal structure and the deterioration of asphalt binder performance. The tests also found that continuous UV radiation can increase shrinkage stress in the asphalt binder surface and leads to surface cracking of the asphalt binder.

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Study on Properties of Bone Glue/Polyurethane Composite Modified Asphalt and Its Mixture

Materials ◽

10.3390/ma14143769 ◽

2021 ◽

Vol 14 (14) ◽

pp. 3769

Author(s):

Wei Yan ◽

Yangjia Ou ◽

Jing Xie ◽

Tuo Huang ◽

Xinghai Peng

Keyword(s):

Rheological Properties ◽

Performance Test ◽

Asphalt Mixture ◽

High Temperature Stability ◽

Road Engineering ◽

Modified Asphalt ◽

Polyurethane Composite ◽

Sbs Modified Asphalt ◽

Composite Modification ◽

Bone Glue

Composite modification technology is widely used in the materials field. To enhance the property of polyurethane modified asphalt and realize its application in road engineering, the bone glue/polyurethane composite modified asphalt (CMA) was prepared using bone glue, polyurethane, and neat asphalt in this research. The bone glue content ranges 5–10%, that of the polyurethane is 1–5%. The relationship between the modifier’s content and the conventional properties and rheological properties of CMA was revealed by response surface methodology (RSM). The CMA performance was further verified under the optimal content of the bone glue and polyurethane. The differences of properties of styrene–butadienestyrene (SBS) modified asphalt mixture, neat asphalt mixture, and bone glue/polyurethane CMA mixture were compared and analyzed by using the pavement performance test. The results showed that the CMA’s conventional properties and rheological properties are improved. The optimal bone glue content and polyurethane content determined by RSM are 6.848% and 2.759%, respectively. The low-temperature crack resistance and water stability of the CMA mixture are enhanced, better than neat asphalt mixture and SBS modified asphalt mixture. The CMA mixture’s dynamic stability is 85% of SBS modified asphalt mixture, but it is 2.4 times of neat asphalt mixture. The result indicated that the bone glue/polyurethane CMA mixture still has certain advantages of high-temperature stability. In this research, the composite modification of bone glue and polyurethane can significantly enhance the characteristic of asphalt and asphalt mixture and provide a new method for applying and promoting polyurethane modified asphalt in road engineering.

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Rheological properties of SBS modified asphalt incorporated polyvinylpyrrolidone stabilized graphene nanoplatelets

Construction and Building Materials ◽

10.1016/j.conbuildmat.2021.123850 ◽

2021 ◽

Vol 298 ◽

pp. 123850

Author(s):

Jingwen Liu ◽

Peiwen Hao ◽

Wentao Jiang ◽

Bowei Sun

Keyword(s):

Rheological Properties ◽

Graphene Nanoplatelets ◽

Modified Asphalt ◽

Sbs Modified Asphalt

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Prediction of Low-Temperature Rheological Properties of SBS Modified Asphalt

Advances in Civil Engineering ◽

10.1155/2020/8864766 ◽

2020 ◽

Vol 2020 ◽

pp. 1-8

Author(s):

Qian Chen ◽

Chaohui Wang ◽

Liang Song

Keyword(s):

Low Temperature ◽

Prediction Model ◽

Rheological Properties ◽

Prediction Models ◽

Raw Materials ◽

Input Parameter ◽

Raw Material ◽

Modified Asphalt ◽

Learning Machine ◽

Sbs Modified Asphalt

The extreme learning machine (ELM) algorithm optimized by genetic algorithm (GA) was used to quickly predict the low-temperature rheological properties of styrenic block copolymer (SBS) modified asphalt through the properties of the raw materials. In this work, one hundred groups of survey data and test data were collected and analyzed. Fourteen vital raw material parameters, such as chemical composition indexes of matrix asphalt and technical indexes of SBS modifier, were selected as the input parameter. The stiffness modulus and m-value of SBS modified asphalt were taken as the output parameter. Then, the GA-ELM prediction model of low-temperature rheological properties was established. According to comparison and analysis with other prediction models, the accuracy and output stability of the GA-ELM prediction model were verified. The results show that the GA-ELM model had obvious accuracy and efficiency. It can be used to predict the low-temperature rheological properties of SBS modified asphalt. Compared with the traditional prediction models, the error of the GA-ELM model was reduced by 68.97–81.48%.

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The Effects of Using Waste Engine Oil Bottom on Physical, Rheological Properties and Composite Modification Mechanism of SBS-Modified Asphalt

Advances in Materials Science and Engineering ◽

10.1155/2022/2775950 ◽

2022 ◽

Vol 2022 ◽

pp. 1-12

Author(s):

Yanbo Wang ◽

Ailian Liu ◽

Weixiang Ding ◽

Fangping Rao ◽

Jun Yuan ◽

...

Keyword(s):

Low Temperature ◽

Rheological Properties ◽

Asphalt Binder ◽

Polymer Network ◽

Engine Oil ◽

Chemical Compositions ◽

Modified Asphalt ◽

Waste Engine Oil ◽

Sbs Modified Asphalt ◽

Composite Modification

This research explores the effects of using waste engine oil bottom on physical, rheological properties and composite modification mechanism of SBS-modified asphalt. The SBS asphalt binder was modified by WEOB with different concentrations (2, 4, and 6 wt%). The GC-MS and FTIR spectrometry were conducted to evaluate the chemical compositions of WEOB- and WEOB-modified asphalt. RV, DSR, and BBR were tested to evaluate high- and low-temperature pavement performance. Fluorescence microscope (FM) test, bar thin layer chromatograph (BTLC) test, and AFM test were performed to evaluate the micromorphologies and modification mechanism. The test results showed that a new characteristic peak appeared in the infrared spectrum of the WEOB-modified SBS asphalt, indicating a chemical reaction in the modification process. Incorporation of WEOB improves both the high-temperature and low-temperature properties of the SBS asphalt binder. It was confirmed that with the increase of WEOB concentration, the content of colloid gradually increases, which promotes the swelling and compaction of SBS polymer network structure. Furthermore, WEOB promotes the polarity of SBS and forms graft product MAH-g-SBS with asphalt, thus inhibiting the thermal movement of asphalt molecules. On the contrary, light components have a good correlation with the surface roughness of modified asphalt; the results show that the modified asphalt has good rutting resistance.

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Effects of polymerized sulfur on rheological properties, morphology and stability of SBS modified asphalt

Construction and Building Materials ◽

10.1016/j.conbuildmat.2017.06.069 ◽

2017 ◽

Vol 150 ◽

pp. 860-871 ◽

Cited By ~ 34

Author(s):

Ming Liang ◽

Xue Xin ◽

Weiyu Fan ◽

Hao Wang ◽

Shisong Ren ◽

...

Keyword(s):

Rheological Properties ◽

Modified Asphalt ◽

Sbs Modified Asphalt

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Comparative analysis on rheological characteristics of different modified asphalt based on DSR and BBR evaluation

Journal of Engineering Design and Technology ◽

10.1108/jedt-05-2021-0282 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Guangyuan Wu ◽

Haitao Zhang ◽

Junfeng Sun ◽

Tengjiang Yu

Keyword(s):

High Temperature ◽

Low Temperature ◽

Rheological Properties ◽

Model Parameters ◽

Content Type ◽

Modified Asphalt ◽

Temperature Performance ◽

Low Temperature Performance ◽

Sbs Modified Asphalt ◽

Main Curve

Purpose In order to evaluate the rheological properties of asphalt more comprehensively and effectively, and to explore and discuss the practicability of relevant models in the evaluation of the rheological properties of asphalt. Design/methodology/approach Based on the rheological and viscoelastic theories, temperature scanning, frequency scanning and multiple stress creep recovery (MSCR) tests of different modified asphalt were carried out by dynamic shear rheometer (DSR) to obtain relevant viscoelastic parameters and evaluate the high temperature properties of different modified asphalt. Based on the time-temperature equivalence principle, the main curve was constructed to study the viscoelastic properties of asphalt in a wider frequency domain. The main curve was fitted with the CAM model, and the rheological properties of different modified asphalt were evaluated through the analysis of model parameters. The creep stiffness and creep velocity of different modified asphalt were obtained through the rheological test of bending beam (BBR), and the low-temperature performance of different modified asphalt was analyzed by using Burgers model to fit the creep compliance. Findings The results show that the high temperature rheological properties of several modified asphalt studied in the test are ranked from best to worst as follows: PE modified asphalt > SBS modified asphalt > SBR modified asphalt. Short-term aging can improve the high temperature performance of asphalt, and different types of modifiers can promote or inhibit this improvement effect. Based on BBR test and Burgers model fitting analysis, SBR modified asphalt has the best low temperature performance, followed by SBS modified asphalt, while PE modified asphalt has poor low temperature performance, so it is not suitable to be used as road material in low temperature area. Originality/value Combined with effective evaluation methods, the rheological properties of asphalt at different temperatures and angles were systematically evaluated, and the evolution of rheological properties of asphalt characterized by model parameters was further analyzed by advanced model simulation.

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