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学者姓名：郭猛
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Abstract ：
During the aging and rejuvenation process of asphalt binder, the proportion of the catana phase in the bee structure on its appearance will change, and the influence of this change on the mechanical performances of the asphalt binder needs to be further investigated. Therefore, a two-dimensional finite element model of the bee structure is constructed on account of the processed AFM images of asphalt binder. The stress and strain distribution law about asphalt binder microstructure was investigated by comparing and analyzing the results of simulation calculations. The results of the study show that the stress in the catana phase of asphalt binder appearance is significantly larger than that in the peri phase, the internal stress in the para phase is the lowest. The catana phase exhibits the least tensile strain due to the fact that it has the largest modulus of elasticity, whereas the tensile strain within the asphalt binder is mainly concentrated in the para phase.
Keyword ：
Aging and rejuvenation processes Aging and rejuvenation processes Mechanical property Mechanical property Bee structure Bee structure Catana phase Catana phase Asphalt binder Asphalt binder
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| GB/T 7714 | Huo, Donghui , Hou, Debao , Yao, Xiupeng et al. Effect of Changes in the Content of Catana Phase in the Asphalt Binder on the Mechanical Properties [J]. | INTERNATIONAL JOURNAL OF PAVEMENT RESEARCH AND TECHNOLOGY , 2024 . |
| MLA | Huo, Donghui et al. "Effect of Changes in the Content of Catana Phase in the Asphalt Binder on the Mechanical Properties" . | INTERNATIONAL JOURNAL OF PAVEMENT RESEARCH AND TECHNOLOGY (2024) . |
| APA | Huo, Donghui , Hou, Debao , Yao, Xiupeng , Gao, Wei , Yu, Changchun , Jia, Ling et al. Effect of Changes in the Content of Catana Phase in the Asphalt Binder on the Mechanical Properties . | INTERNATIONAL JOURNAL OF PAVEMENT RESEARCH AND TECHNOLOGY , 2024 . |
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Abstract ：
A dual-phase change material (DPCM) containing polyethylene glycol (PEG) 400/expanded graphite (EG) and PEG1500/EG with both high and low-temperature regulation capacities was prepared. It was added as an additive to the NovaChip-Type C asphalt mixtures. Laboratory and field temperature regulation tests were designed. The images taken by SEM showed that PEG was fully adsorbed by EG and the structure of DPCM was stable. The test results showed the DPCM has good durability in the cyclic phase change process. The modified asphalt binders with different DPCM content showed different heat storage capacity. The results of temperature regulation tests showed that the addition of DPCM effectively reduced the temperature change rate of asphalt mixtures. With 1.88% DPCM, the extremum of high temperature of asphalt mixtures reduced by 2.3 degrees C while the extremum of low temperature increased by 2.0 degrees C. In terms of road performance, the cracking resistance at low temperature of asphalt mixtures gradually improved with the increase of DPCM content. Meanwhile, the rutting resistance at high temperature and water damage resistance still met the requirements of the specification. The DPCM had a good effect on restraining the occurrence of road diseases caused by temperature and prolonging the service life of the road.
Keyword ：
Phase change material Phase change material ultra-thin overlay ultra-thin overlay asphalt mixture asphalt mixture functional pavement functional pavement
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| GB/T 7714 | Guo, Meng , Zhang, Shuaixiang , Zhang, Rui et al. Study on temperature regulation capability of asphalt mixture modified by dual phase change material used in ultra-thin overlay [J]. | INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING , 2024 , 25 (1) . |
| MLA | Guo, Meng et al. "Study on temperature regulation capability of asphalt mixture modified by dual phase change material used in ultra-thin overlay" . | INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING 25 . 1 (2024) . |
| APA | Guo, Meng , Zhang, Shuaixiang , Zhang, Rui , Du, Xiuli . Study on temperature regulation capability of asphalt mixture modified by dual phase change material used in ultra-thin overlay . | INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING , 2024 , 25 (1) . |
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Abstract ：
The use of antioxidants in asphalt binder is significant in prolonging the service life of asphalt pavements. In order to improve the aging resistance of asphalt binder, an antioxidant was mixed into SBS modified asphalt binder in this study. The effects of the antioxidant on the properties and aging resistance of SBS modified asphalt binder were characterised based on rheological parameters, chemical composition and morphology. The results showed that the aging resistance index quantitatively evaluated the aging resistance of different asphalt binders. The average aging resistance index of asphalt binder with 3% antioxidant based on different properties index was about 3.5, which meant it can prolong the aging life by approximately 3.5 times. The control of carbonyl and sulfoxide formation by antioxidant was the key driver to inhibit the macroscopic property degradation of asphalt binder. However, the antioxidant did not effectively inhibit the degradation of SBS modifiers during aging.
Keyword ：
functional groups functional groups SBS modified asphalt binder SBS modified asphalt binder rheological parameters rheological parameters morphology morphology antioxidants antioxidants
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| GB/T 7714 | Liang, Meichen , Guo, Meng , Wang, Zhen et al. Evaluation of an antioxidant to improve the aging resistance of SBS modified asphalt binder based on chemical mechanical analysis (TI CAB) [J]. | ROAD MATERIALS AND PAVEMENT DESIGN , 2024 . |
| MLA | Liang, Meichen et al. "Evaluation of an antioxidant to improve the aging resistance of SBS modified asphalt binder based on chemical mechanical analysis (TI CAB)" . | ROAD MATERIALS AND PAVEMENT DESIGN (2024) . |
| APA | Liang, Meichen , Guo, Meng , Wang, Zhen , Ma, Fuzheng , Song, Shanglin . Evaluation of an antioxidant to improve the aging resistance of SBS modified asphalt binder based on chemical mechanical analysis (TI CAB) . | ROAD MATERIALS AND PAVEMENT DESIGN , 2024 . |
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Abstract ：
Recently, there have been many studies on the inhibition of asphalt fumes; however, the study on the inhibition of component of asphalt fumes is still limited. In this paper, four kinds of fumes and odor suppressant were selected based on the principles of physical adsorption and chemical inhibition, and the particulate matter of asphalt fumes was taken as the object of fume suppression, and the benzene organic matter among volatile organic compounds was taken as the object of odor purification. The inhibition effects of fumes and odor suppressant on asphalt fumes particulate matter and volatile organic compounds were investigated based on the gravimetric method and gas chromatography-mass spectrometry. The effects of fumes and odor inhibitors on rheological properties were obtained by dynamic shear rheometry. Results showed that asphalt fumes particles and benzene organics in volatile organic compounds were used as fumes suppression and odor purification targets, respectively. Activated carbon was the most effective in suppressing fumes with 65.7 %. It was 1.2 times more effective than diatomaceous earth and Odor Cleaner A. Odor cleaner B had the highest suppression rate of 76.4% on the benzene component of volatile organic compounds released from asphalt binder. Activated carbon also had a good suppression effect on the benzene component of volatile organic compounds released from asphalt binder, with suppression rate of 59 %. Fumes and odor suppressants had a low impact on asphalt pavement performance, especially suppressants based on chemical inhibition principles.
Keyword ：
Asphalt fumes particulate matter Asphalt fumes particulate matter Asphalt fumes Asphalt fumes Asphalt fumes compositional composition Asphalt fumes compositional composition Road performance Road performance Fumes suppressant Fumes suppressant Odor cleaner Odor cleaner
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| GB/T 7714 | Guo, Meng , Xu, Wenchao , Du, Xiuli . Study on the release and suppression of fumes from asphalt binder [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 441 . |
| MLA | Guo, Meng et al. "Study on the release and suppression of fumes from asphalt binder" . | CONSTRUCTION AND BUILDING MATERIALS 441 (2024) . |
| APA | Guo, Meng , Xu, Wenchao , Du, Xiuli . Study on the release and suppression of fumes from asphalt binder . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 441 . |
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Abstract ：
A composite anti-aging rejuvenator for road asphalt was studied and prepared. Asphalt samples with different aging degrees and modifier dosages were prepared by RTFOT(rolling thin film oven) and PAV(pressure aging vessle), and the viscoelastic, high temperature, low temperature and fatigue properties of the modified asphalt were comprehensively characterised based on their rheological properties. The test results showed that the composite anti-aging rejuvenator improved the fatigue performance and low temperature performance of aging asphalt. Among them, the creep rate m value at - 18 degrees C was recovered to 99.2 % of the unaged level, and the G-R (Glover-Rowe) parameter was reduced to more than 90 %. After long term aging of the composite anti-aging reclaimed mixtures were still able to maintain the water stability and low temperature performance higher than the level required by the specification. The paper found the better effect of adding same ratio of rejuvenator and anti-aging agent to aging asphalt. The reason was that the same ratio of rejuvenator and anti-aging agent could have synergistic effect and enhance each other. This paper verified the road value of the composite antiaging rejuvenator from asphalt and asphalt mixtures, which provides technical support and reference for the promotion of old pavement reclamation and long-life pavement.
Keyword ：
Asphalt Asphalt Anti-aging Anti-aging Rheology Rheology Rejuvenator Rejuvenator
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| GB/T 7714 | Guo, Shaohua , Xiu, Hanbo , Guo, Meng et al. Using rheology to study the synergistic effect of anti-aging modifier and rejuvenator on aged asphalt binder [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 447 . |
| MLA | Guo, Shaohua et al. "Using rheology to study the synergistic effect of anti-aging modifier and rejuvenator on aged asphalt binder" . | CONSTRUCTION AND BUILDING MATERIALS 447 (2024) . |
| APA | Guo, Shaohua , Xiu, Hanbo , Guo, Meng , Guo, Yifan , Zhang, Shuaixiang , Chang, Li . Using rheology to study the synergistic effect of anti-aging modifier and rejuvenator on aged asphalt binder . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 447 . |
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Abstract ：
The efficient recycling of road materials is an effective way to reduce carbon emissions. Approximately 400 million tons of waste asphalt pavement materials is generated annually in China, but the utilization rate is less than 50%. In this paper, a whole life cycle CO2 emission calculation model for recycled asphalt mixtures is established, and an uncertainty analysis is carried out on the basis of this model. The steps in the recycled asphalt mixture stage with the greatest impact on emissions are identified. The life cycle of asphalt mixtures is divided into raw material production, mixture preparation, material transportation and construction phases based on the carbon emission trends in the four phases. First, recycled asphalt mixtures are considered, and the carbon emissions along a two-way four-lane highway are analyzed based on the relevant carbon emission factor and other known data. The carbon dioxide emissions of each stage are also compared to identify the key links among stages. Then, the carbon emissions of hot-recycled asphalt mixtures are compared with those of ordinary asphalt mixtures and cold-recycled asphalt mixtures in each stage. Finally, an analytical uncertainty study of recycled asphalt mixtures is conducted using uncertainty modeling in different scenarios. Based on the quantitative results of the carbon emission calculations through life cycle assessment (LCA), future measures for reducing carbon emissions from recycled asphalt mixtures are proposed.
Keyword ：
uncertainty analysis uncertainty analysis different stages different stages recycled asphalt mixtures recycled asphalt mixtures life cycle carbon emissions life cycle carbon emissions
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| GB/T 7714 | Wang, Jingjing , Sha, Chuan , Ly, Sivmey et al. Life Cycle Carbon Emissions and an Uncertainty Analysis of Recycled Asphalt Mixtures [J]. | SUSTAINABILITY , 2023 , 15 (23) . |
| MLA | Wang, Jingjing et al. "Life Cycle Carbon Emissions and an Uncertainty Analysis of Recycled Asphalt Mixtures" . | SUSTAINABILITY 15 . 23 (2023) . |
| APA | Wang, Jingjing , Sha, Chuan , Ly, Sivmey , Wang, Hao , Sun, Yu , Guo, Meng . Life Cycle Carbon Emissions and an Uncertainty Analysis of Recycled Asphalt Mixtures . | SUSTAINABILITY , 2023 , 15 (23) . |
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Abstract ：
Ultraviolet (UV) radiation is one of the main causes of asphalt pavement aging. The development of UV-resistant technology is of great significance to improve the durability of asphalt pavement. In order to evaluate the feasibility of carbon black (CB) and hindered amine light stabilizer (HALS) as UV-resistant additives, the modified asphalt binders were prepared by adding CB and HALS. The dispersibility of UV-resistant additives in asphalt binder was evaluated by using a fluorescence microscope. Then, the aging resistance of additives and their effects on virgin asphalt binder were qualitatively evaluated by calculating rheological parameters. The new aging-resistant index and impact index were defined. The results show that the aging-resistant index and impact index can accurately characterize the aging resistance of additives and their effect on virgin asphalt binder. The UV-resistant additives slowed down the aging rate of asphalt binder. A 3 % dosage of CB had a great adverse effect on the properties of virgin asphalt binder. HALS showed good UV resistance and had little effect on virgin asphalt binder. The aging-resistant index of asphalt binder modified by HALS was about 1.63 times that of the asphalt binder modified by CB at the same dosage (1 %). The aging-resistant index of asphalt binder modified by 1 % HALS was only about 1.31 times that of asphalt binder modified by 0.5 % HALS. In addition, the dosage of HALS was changed from 0.5 % to 1 % and the impact indexes changed to more than 2.67 times. It was considered that HALS was more suitable for improving the aging resistance of asphalt binder with an optimal dosage of 0.5 %.
Keyword ：
UV-resistant additives UV-resistant additives stabilizer stabilizer asphalt binder asphalt binder carbon black carbon black aging resistance aging resistance hindered amine light hindered amine light dispersibility dispersibility
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| GB/T 7714 | Guo, Meng , Liang, Meichen , Du, Xiuli . Evaluation on Feasibility of Carbon Black and Hindered Amine Light Stabilizer as UV-Resistant Additives of Asphalt Binder [J]. | JOURNAL OF TESTING AND EVALUATION , 2023 , 51 (6) : 3987-4003 . |
| MLA | Guo, Meng et al. "Evaluation on Feasibility of Carbon Black and Hindered Amine Light Stabilizer as UV-Resistant Additives of Asphalt Binder" . | JOURNAL OF TESTING AND EVALUATION 51 . 6 (2023) : 3987-4003 . |
| APA | Guo, Meng , Liang, Meichen , Du, Xiuli . Evaluation on Feasibility of Carbon Black and Hindered Amine Light Stabilizer as UV-Resistant Additives of Asphalt Binder . | JOURNAL OF TESTING AND EVALUATION , 2023 , 51 (6) , 3987-4003 . |
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Abstract ：
Adding rejuvenator is a feasible method to restore the properties of aged asphalt. Due to the complex rejuve-nation mechanism between different rejuvenators and aged asphalt, there is no unified standard to evaluate the rejuvenation effect of rejuvenator. Most of the current research on rejuvenator focus on the characterization of macro mechanical properties of rejuvenated asphalt binder. In order to explore the changes of chemical composition and micromechanical properties of asphalt during aging and rejuvenation, fifteen kinds of virgin asphalt samples at different aging and rejuvenation stages were prepared. A commercial rejuvenator, aromatic oil and warm mix agent were selected as rejuvenators. The fifteen asphalt samples involved various aging methods, including water-ultraviolet aging, water free ultraviolet aging, RTFOT and PAV. Through gel perme-ation chromatography (GPC), Fourier transform infrared spectrometer (FTIR) and atomic force microscope (AFM) test, the reversibility evaluation index Rw, RC=O, RS=O and RDMT were proposed. These indexes could be used to quantitatively evaluate the rejuvenation effects of rejuvenator on the specific properties of aged asphalt. Based on the linear fitting results among various indexes, micro reversibility index of virgin asphalt (IRIV) was proposed. The results showed that the commercial rejuvenator and warm mix agent had a limited effect on the recovery of chemical composition and molecular weight of aged asphalt. The commercial rejuvenator over restored the micro mechanical properties of aged asphalt. The effect of aromatic oil on micro mechanical properties of aged asphalt was between commercial rejuvenator and warm mix agent. This study provides a way to quantitatively evaluate the rejuvenation effect of rejuvenator on virgin asphalt binder. It is helpful to better understand the aging-rejuvenation process of virgin asphalt binder more comprehensively from chemical and micromechanical properties.
Keyword ：
Aging Aging Virgin asphalt binder Virgin asphalt binder Rejuvenation Rejuvenation Chemical and micromechanical properties Chemical and micromechanical properties Unified evaluation index Unified evaluation index
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| GB/T 7714 | Guo, Meng , Zhang, Shuaixiang , Du, Xiuli et al. Study on effect of various rejuvenators on virgin asphalt binders suffering various aging conditions and the unified evaluation index [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 397 . |
| MLA | Guo, Meng et al. "Study on effect of various rejuvenators on virgin asphalt binders suffering various aging conditions and the unified evaluation index" . | CONSTRUCTION AND BUILDING MATERIALS 397 (2023) . |
| APA | Guo, Meng , Zhang, Shuaixiang , Du, Xiuli , Tan, Yiqiu , Luo, Daisong . Study on effect of various rejuvenators on virgin asphalt binders suffering various aging conditions and the unified evaluation index . | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 397 . |
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Abstract ：
The aging behavior of asphalt binder in service is complex. The accelerated aging methods commonly used in the laboratory are difficult to reproduce the aging behavior of asphalt binder in service. The purpose of this study is to develop a method for predicting the properties of asphalt binder in service. First, a multi-factor accelerating (MFA) aging method was developed to accelerate the aging of asphalt binder. Multi-scale characterization and correlation analysis were conducted on the MFA-aged asphalt binder. Then, the evaluation index of MFA aging was defined, which was used to establish the prediction equation for asphalt binder aging. Finally, the time correlation between field aging, pressure aging vessel (PAV) aging and MFA aging was constructed separately. The results show that accelerated aging of asphalt binder at atmospheric pressure and service temperature can be achieved by the coupled effect of temperature, ultraviolet light and rain. After 5-day MFA aging, the Glover -Rowe (G-R) parameter, an index for evaluating the cracking resistance of asphalt binder, was increased by 308%. The carbonyl index, an index for evaluating the content of chemical functional groups of asphalt binder, was increased by 67%. The correlation between the G-R parameter and the carbonyl index was linear, and the goodness-of-fit was greater than 0.9. The carbonyl index as a key chemical index may reflect the macroscopic properties of asphalt binder. The prediction equation for aging was established based on the carbonyl index of field-aged asphalt binder in Beijing, with reliability greater than 0.98. PAV aging for 20 h was equivalent to 1.35 years of asphalt binder service in Beijing. MFA aging method can better predict the aging time in the field. The prediction accuracy was 97.2%, which was 4.9% higher compared to that of PAV aging. MFA aging for 5 days was equivalent to about 2 years of asphalt binder service in Beijing.
Keyword ：
Aging rate Aging rate Field aging Field aging Prediction equation for aging Prediction equation for aging Multi -factor accelerating aging Multi -factor accelerating aging
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| GB/T 7714 | Liang, Meichen , Guo, Meng , Xu, Xiaoxiao et al. Study on accelerated aging rate of asphalt binder under multi-factors coupling conditions [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 400 . |
| MLA | Liang, Meichen et al. "Study on accelerated aging rate of asphalt binder under multi-factors coupling conditions" . | CONSTRUCTION AND BUILDING MATERIALS 400 (2023) . |
| APA | Liang, Meichen , Guo, Meng , Xu, Xiaoxiao , Liu, Xu , Liu, Hao , Bi, Yufeng . Study on accelerated aging rate of asphalt binder under multi-factors coupling conditions . | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 400 . |
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Abstract ：
Due to the temperature changes caused by seasonal changes and extreme weather, asphalt pavement suffers from rutting, cracking, and other damage. With commonly used pavement additives, the high-temperature performance and the low-temperature performance of asphalt pavement show opposite trends, with related research endeavoring to find a balance between the two. In this study, a dual-phase-change material (DPCM) with both high- and low-temperature effects was prepared. The chemical stability and rheological properties of modified asphalt binders were characterized using Fourier transform infrared spectroscopy (FTIR) and a dynamic shear rheometer (DSR). Temperature control tests of the DPCM-modified asphalt binders were carried out with an indoor simulation device. The results show that the DPCMs could improve the rutting resistance of the asphalt binders at a high temperature, but the fatigue performance of the modified asphalt binder with different DPCM contents was reduced. The FTIR results showed that no chemical reaction occurred in the mixing of the asphalt binder and the DPCM. In the indoor simulation temperature control test, the 40% DPCM-content-modified asphalt binder reduced the high-temperature extreme value by 4.2 degrees C and increased the low-temperature extreme value by 2.5 degrees C, showing a good temperature control effect and practical application value.
Keyword ：
rutting resistance rutting resistance rheology rheology modified asphalt modified asphalt phase-change materials phase-change materials
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| GB/T 7714 | Huo, Donghui , Hou, Debao , Zhang, Shuaixiang et al. Study of Pavement Performance and Temperature Regulation Capacity of Asphalt Binders Modified with Dual-Phase-Change Materials [J]. | BUILDINGS , 2023 , 13 (11) . |
| MLA | Huo, Donghui et al. "Study of Pavement Performance and Temperature Regulation Capacity of Asphalt Binders Modified with Dual-Phase-Change Materials" . | BUILDINGS 13 . 11 (2023) . |
| APA | Huo, Donghui , Hou, Debao , Zhang, Shuaixiang , Gao, Wei , Yu, Changchun , Jia, Ling et al. Study of Pavement Performance and Temperature Regulation Capacity of Asphalt Binders Modified with Dual-Phase-Change Materials . | BUILDINGS , 2023 , 13 (11) . |
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