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学者姓名：王超
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摘要 ：
Asphalt binder as a by-product of petroleum is a finite resource. Hence, finding an alternative material for asphalt binder is a potential topic in the road engineering. Performance of compound-modified asphalt material at high temperatures, by waste cooking oil (WCO) and organic montmorillonite (OMMT) was investigated in this study, and the multi-scale correlation evaluation was conducted. The findings revealed that the bio-oil significantly reduces the barrier to rutting of asphalt materials within multi-scales, and rutting resistance was reduced with increased content. High-temperature performance can be regained or even better than that of base asphalt materials when WCO Bio-oil: OMMT is 1:1, and OMMT can compensate for the loss of high-temperature performance. Besides, the multi-scale correlation analysis shows that the Jnr3.2 index of OMMT composite modified bio-asphalt mastic, asphalt mixtures' resistance to rutting at high temperatures can be predicted using their short-term aging condition.
关键词 ：
Waste cooking oil Waste cooking oil Bio-asphalt Bio-asphalt Correlation analysis Correlation analysis High temperature performance High temperature performance Multi-scale Multi-scale Organic montmorillonite Organic montmorillonite
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| GB/T 7714 | Zhou, Bochao , Ji, Xiaobin , Gong, Guanyu et al. Multi-scale study of compound modified asphalt materials by waste cooking oil and organic montmorillonite on high temperature performance [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 408 . |
| MLA | Zhou, Bochao et al. "Multi-scale study of compound modified asphalt materials by waste cooking oil and organic montmorillonite on high temperature performance" . | CONSTRUCTION AND BUILDING MATERIALS 408 (2023) . |
| APA | Zhou, Bochao , Ji, Xiaobin , Gong, Guanyu , Wang, Zhen , Wang, Chao . Multi-scale study of compound modified asphalt materials by waste cooking oil and organic montmorillonite on high temperature performance . | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 408 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The high construction temperature of asphalt pavement will cause the volatile organic compounds (VOCs) emission, which seriously affects the environment and the workers' health. However, current research on the characteristics of asphalt VOCs emission less involves quantitative analysis. In this study, gas chromatography-mass spectrometry (GC-MS) was used to analyze the emission characteristics of 8 different asphalt VOCs from the "materials-groupscomponents" multi-level. The assessment of negative impact includes environment, health risk and odor. The results show that the characteristic of asphalt VOCs emission are materialdependent, benzene series and aldehydes make the most contribution to ozone formation, only alkanes, benzene series and olefins make contribution to the secondary organic aerosol (SOA) formation. Besides, acetaldehyde makes the most contribution to carcinogenic risk, acetaldehyde and acrolein make the most contribution to non-carcinogenic risk. The aldehtdes makes the most contribution to the asphalt odor. This study provided theoretical support for the reduction measures of asphalt VOCs emission.
关键词 ：
Health risk assessment Health risk assessment Environment assessment Environment assessment Odor assessment Odor assessment VOCs emission characteristics VOCs emission characteristics Asphalt binders Asphalt binders
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| GB/T 7714 | Zhou, Bochao , Gong, Guanyu , Wang, Chao . Characteristics and assessment of volatile organic compounds from different asphalt binders in laboratory [J]. | TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT , 2023 , 118 . |
| MLA | Zhou, Bochao et al. "Characteristics and assessment of volatile organic compounds from different asphalt binders in laboratory" . | TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT 118 (2023) . |
| APA | Zhou, Bochao , Gong, Guanyu , Wang, Chao . Characteristics and assessment of volatile organic compounds from different asphalt binders in laboratory . | TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT , 2023 , 118 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Asphalt materials will emit a large amount of volatile organic compounds (VOCs) under high temperature conditions, to address the environmental impact of asphalt pavement construction, this study selected different proportions of activated carbon (AC) and expanded graphite (EG) as composite inhibitors of asphalt VOCs, the road performance and environmental performance of asphalt mixtures are explored. Furthermore, the study proposed the VOCs resistance index (VRI) and VOCs environment-technique index (ETI) to evaluate the environmental and environmentaltechnical performance of asphalt mixture incorporating composite VOCs inhibitors. The results show that the VOCs inhibited asphalt mixtures with 5% AC-3% EG composite inhibitors has the best comprehensive environmental performance (80.15%), and its environmental technical performance (27.59%) is also the best, which is far higher than the other three VOCs inhibited asphalt mixtures. This study provides a reference and evaluation standard for the future development of efficient asphalt VOCs inhibitors.
关键词 ：
VOCs resistance index (VRI) VOCs resistance index (VRI) Volatile organic compounds (VOCs) Volatile organic compounds (VOCs) Environment-technique index (ETI) Environment-technique index (ETI) Activated carbon (AC) Activated carbon (AC) Expanded graphite (EG) Expanded graphite (EG) Asphalt materials Asphalt materials
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| GB/T 7714 | Zhou, Bochao , Gong, Guanyu , Liu, Yu et al. Technical and environmental performance assessment of VOCs inhibited asphalt binders and mixtures [J]. | TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT , 2023 , 124 . |
| MLA | Zhou, Bochao et al. "Technical and environmental performance assessment of VOCs inhibited asphalt binders and mixtures" . | TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT 124 (2023) . |
| APA | Zhou, Bochao , Gong, Guanyu , Liu, Yu , Guo, Mingyang , Wang, Chao . Technical and environmental performance assessment of VOCs inhibited asphalt binders and mixtures . | TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT , 2023 , 124 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Volatile organic compounds (VOCs) of asphalt will cause adverse environmental impact and workers' health risk, inhibitors can be used to reduce the emission of VOCs from asphalt. Three inhibitors, including activated carbon (AC), expanded graphite (EG) and hydrotalcite (MA), were used to modified asphalt in this work. The effects of inhibitors on the VOCs emission characteristics of asphalt were investigated at multiple levels of VOCs total concentration, groups distribution and components characteristics. 101 asphalt VOCs components were detected, among which alkane accounted for more than 50% of the total concentration, followed by aldehyde and benzene. AC with the largest specific surface area and pore capacity exhibited the best inhibitory effect on the emission of VOCs with total concentration inhibition rate of 45.58%, followed by MA, while excessive MA would have adverse effect. Over 90% of VOCs components emissions had been suppressed by AC and EG. And inhibitors had the best inhibitory effect on the emission of olefin and aldehyde in VOCs, followed by ketone, but had the worst inhibitory effect on alkane, which was due to the weak interactions between non-polar alkane and polar hydroxyl on the surface of inhibitors. Furthermore, the effects of different inhibitors on the environmental impact and health risk of VOCs from asphalt were also systematically studied. The highest total inhibition rate of OFP and SOAP from asphalt VOCs by AC was only 58.3% and 21.7%, which was ascribed to the limited suppression on OFP and SOAP generated by alkane and benzene. Meanwhile, the non-carcinogenic risk from asphalt VOCs was mainly caused by acrolein with a contribution rate of 80.0%, AC and EG can completely inhibit the emission of acrolein in asphalt VOCs, while MA showed the poor performance. The contribution rate of acetaldehyde to the carcinogenic risk of asphalt VOCs reached 93.7%, while inhibitors had limited inhibitory effects on its emissions. This study contributes to a deeper understanding of the correlation mechanism between inhibitors, emission reduction characteristics of asphalt VOCs and environmental-health benefits, which could provide theoretical support for the design of bituminous material with low environmental-health load.
关键词 ：
Health risk Health risk Environmental impact Environmental impact Volatile organic compounds Volatile organic compounds VOCs emission reduction characteristics VOCs emission reduction characteristics Inhibitor Inhibitor Asphalt binder Asphalt binder
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| GB/T 7714 | Cao, Zhilong , Gong, Guanyu , Liu, Yu et al. Effects of different inhibitors on emission characteristics, environmental impact and health risk of volatile organic compounds from asphalt binder [J]. | JOURNAL OF CLEANER PRODUCTION , 2023 , 428 . |
| MLA | Cao, Zhilong et al. "Effects of different inhibitors on emission characteristics, environmental impact and health risk of volatile organic compounds from asphalt binder" . | JOURNAL OF CLEANER PRODUCTION 428 (2023) . |
| APA | Cao, Zhilong , Gong, Guanyu , Liu, Yu , Cao, Xuejuan , Tang, Boming , Wang, Chao . Effects of different inhibitors on emission characteristics, environmental impact and health risk of volatile organic compounds from asphalt binder . | JOURNAL OF CLEANER PRODUCTION , 2023 , 428 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Generally, the cohesive healing within the asphalt composites and the adhesive healing from the asphalt-aggregate interface always occur simultaneously in the asphalt concrete with growing damage. This study aims to investigate the cohesive and adhesive healing behaviors of asphalt binder respectively by utilizing the newly developed linear amplitude sweep based healing (LASH) and binder bond strength based healing (BBSH) tests. Seven unmodified asphalt binders and one styrene-butadienestyrene (SBS) polymer modified binder are selected in this study. A fracture mechanics based crack growth approach is proposed to define the cohesive healing recovery in the LASH test with two percent healing parameters, in terms of the %Ha of the crack length recovery and the %HA of the sample intact area recovery. In prefailure conditions, the measured %Ha can at least reach beyond 30% while the %HA is normally within 30% for tested binders. Meanwhile, the %Ha results show more consistent trends to the traditional simplified-viscoelastic continuum damage (S-VECD) based LASH data interpretation. Furthermore, the cohesive failure occurrence is verified to significantly impact the healing performance comparison. The cohesive healing behaviors of neat and SBS binders respectively in pre-failure and post-failure conditions are distinguished to each other, which are validated either from S-VECD or crack growth approaches. Regarding to the binder adhesive healing behavior, it is observed that the presence of water and the using of granite substrate generally have positive effects on adhesive healing recovery in the BBSH tests. The SBS modification generally displays lower adhesive healing percentages than the neat binders especially in the wet conditions. Though no clear relationships can be found between the cohesive and adhesive healing behaviors in this study, it is recommended to quantify the binder contribution to the adhesive healing process in the future work. (C) 2021 Elsevier Ltd. All rights reserved.
关键词 ：
Asphalt binder Asphalt binder Cohesive healing Cohesive healing Adhesive healing Adhesive healing Damage Damage Crack growth Crack growth
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| GB/T 7714 | Wang, Chao , Chen, Yifang , Gong, Guanyu . Cohesive and adhesive healing evaluation of asphalt binders by means of the LASH and BBSH tests [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2021 , 282 . |
| MLA | Wang, Chao et al. "Cohesive and adhesive healing evaluation of asphalt binders by means of the LASH and BBSH tests" . | CONSTRUCTION AND BUILDING MATERIALS 282 (2021) . |
| APA | Wang, Chao , Chen, Yifang , Gong, Guanyu . Cohesive and adhesive healing evaluation of asphalt binders by means of the LASH and BBSH tests . | CONSTRUCTION AND BUILDING MATERIALS , 2021 , 282 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
This paper investigates the damage-healing properties of unmodified and polymer modified asphalt binders under different aging levels using newly developed linear amplitude sweep based healing (LASH) test. One neat asphalt 70# and one Styrene-Butadiene-Styrene (SBS) modified asphalt are selected in this study. The original binders are subjected to the Rolling Thin Film Oven (RTFO) and Pressurized Aging Vessel (PAV) tests for stimulating the short- and long-term aging of asphalt binders during the pavement construction and service phases. Through the LASH tests under different aging levels of the two binders, it is found that the damage-healing performance of both neat and modified asphalt binders gradually decrease with the increasing aging levels. It is also observed that the healing performance of 70# neat asphalt is higher than that of SBS binder in pre-failure conditions, however, the healing behaviors of SBS binder is becoming obviously better than that of 70# binder after fatigue failure. Furthermore, a promising relationship is found between the macroscale healing properties of asphalt binders and their microscale chemical composition under various aging levels.
关键词 ：
Asphalt Asphalt Aging Aging Healing Healing Rheology Rheology Chemical composition Chemical composition
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| GB/T 7714 | Chen, Yifang , Wang, Chao . Oxidative Aging Effects on Damage-Healing Performance of Unmodified and Polymer Modified Asphalt Binders [C] . 2020 : 395-403 . |
| MLA | Chen, Yifang et al. "Oxidative Aging Effects on Damage-Healing Performance of Unmodified and Polymer Modified Asphalt Binders" . (2020) : 395-403 . |
| APA | Chen, Yifang , Wang, Chao . Oxidative Aging Effects on Damage-Healing Performance of Unmodified and Polymer Modified Asphalt Binders . (2020) : 395-403 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The linear amplitude sweep (LAS) test has been widely accepted for estimating the fatigue resistance of asphalt binders in the last 10 years. This paper proposes a fracture mechanics-based analytical approach for crack initiation and propagation characterization in the LAS test, aiming to more precisely explore the binder crack growth and failure mechanism. Seven unmodified neat asphalt binders and one styrene-butadiene-styrene (SBS) polymer-modified binder are selected in this study. The crack length (a), rate of cracking (da/dN), stress intensity factor (K), and energy release rate (G) are the fundamental parameters for the data interpretation approach proposed in this paper. Experimental and analysis results demonstrate that the energy-based failure definition (either from continuum damage mechanics or fracture mechanics) should be utilized to detect the material-dependent failure occurrence in LAS test. The fracture behavior of asphalt binder in the LAS test follows the two-phase crack growth (TPCG) model in terms of the crack initiation and crack propagation. The crack propagation phase further consists of stable crack growth and unstable crack growth. It is found that the fatigue performance of asphalt binder is intrinsically governed and dominated by its resistance to the crack propagation. The SBS binder in this study clearly displays slower crack propagation behavior than other neat binders. Additionally, the traditional fatigue life can also be divided into the crack initiation life and crack propagation life, which is promising to clarify the specific modification contribution to binder fatigue resistance. The two critical crack lengths of initiated crack and propagated crack for a given asphalt binder are found to be correlated to each other, indicating the potential links between the binder crack initiation and propagation behaviors. (c) 2020 American Society of Civil Engineers.
关键词 ：
Asphalt binder Asphalt binder Crack propagation Crack propagation Crack initiation Crack initiation Fatigue Fatigue Fracture Fracture
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| GB/T 7714 | Wang, Chao , Chen, Yifang , Song, Lihao . Investigating the Crack Initiation and Propagation of Asphalt Binder in Linear Amplitude Sweep Test [J]. | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2020 , 32 (12) . |
| MLA | Wang, Chao et al. "Investigating the Crack Initiation and Propagation of Asphalt Binder in Linear Amplitude Sweep Test" . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING 32 . 12 (2020) . |
| APA | Wang, Chao , Chen, Yifang , Song, Lihao . Investigating the Crack Initiation and Propagation of Asphalt Binder in Linear Amplitude Sweep Test . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2020 , 32 (12) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Currently the linear amplitude sweep (LAS) test is one of the main fatigue protocols to estimate the fatigue resistance of asphalt binder. In past 10-years, several data interpretation approaches have been developed for the LAS-based binder fatigue modeling. The objective of this paper is to compare the currently available analytical approaches for the data interpretation of LAS test and further investigate the potential links between the different LAS-based fatigue evaluations of asphalt binders. Totally 20 types of unmodified and modified asphalt binders are selected in this study, which actually cover 35 sample conditions under different aging and temperature levels. Experimental and analysis results indicate that the full fatigue performance of asphalt binder can be characterized from with the S-VECD & G(R) approach. The failure property in LAS test is also well correlated to the binder fatigue life simulation and thus can be utilized to more efficiently distinguish the binder fatigue resistance. Furthermore, the performance predictive accuracy of AASHTO TP101 specification method is strongly dependent on the selected failure definition. Taking the artificial failure definition of 35% reduction in |G*|.sin delta largely underestimates the binder fatigue life when compared to the S-VECD & G(R) approach. However, when a material-dependent failure definition of peak stress is alternatively employed in specification method, the correlation of the predictive binder fatigue life between the two analytical approaches is significantly improved and a linear relationship is additionally found between the S-VECD & G(R) approach and specification method. Therefore, it is recommended that when only the standard LAS test with one loading rate is available in practice, the peak stress failure definition should be used in AASHTO TP101 specification method to provide relatively accurate fatigue performance estimation of asphalt binder.
关键词 ：
Fatigue failure Fatigue failure Fatigue damage Fatigue damage Linear amplitude sweep Linear amplitude sweep Time sweep Time sweep Asphalt binder Asphalt binder
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| GB/T 7714 | Wang, Chao , Chen, Yifang , Xie, Wei . A comparative study for fatigue characterization of asphalt binder using the linear amplitude sweep test [J]. | MATERIALS AND STRUCTURES , 2020 , 53 (4) . |
| MLA | Wang, Chao et al. "A comparative study for fatigue characterization of asphalt binder using the linear amplitude sweep test" . | MATERIALS AND STRUCTURES 53 . 4 (2020) . |
| APA | Wang, Chao , Chen, Yifang , Xie, Wei . A comparative study for fatigue characterization of asphalt binder using the linear amplitude sweep test . | MATERIALS AND STRUCTURES , 2020 , 53 (4) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Conventional asphalt binder derived from the petroleum refining process is widely used in pavement engineering. However, asphalt binder is a non-renewable material, while waste cooking oil (WCO) is a renewable original material, so it can be used as an additive for asphalt binder. Several studies found that the WCO changes mechanical properties of asphalt binder. However, the micro investigation of the modification of WCO is not studied. In this paper, A reasonable molecular structure for WCO is created based on previous research findings firstly, which are fundamental and crucial for establishing the molecular model of bio-asphalt binder with various WCO contents. Then the molecular dynamics technology is employed to investigate the mechanical properties of asphalt binder with different WCO contents. The results show that the WCO softens the asphalt binder increasing with its content, which is consistent with the previous research, indicating that the simulated results characterize the mechanical properties of asphalt binder effectively and scientifically.
关键词 ：
Asphalt binder Asphalt binder Mechanical properties Mechanical properties Molecular dynamics simulation Molecular dynamics simulation Waste cooking oil Waste cooking oil
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| GB/T 7714 | Qu, Xin , Wang, Dawei , Liu, Quan et al. Study on the Mechanical Properties of Waste Cooking Oil Modified Asphalt Binder [C] . 2019 : 215-219 . |
| MLA | Qu, Xin et al. "Study on the Mechanical Properties of Waste Cooking Oil Modified Asphalt Binder" . (2019) : 215-219 . |
| APA | Qu, Xin , Wang, Dawei , Liu, Quan , Oeser, Markus , Wang, Chao . Study on the Mechanical Properties of Waste Cooking Oil Modified Asphalt Binder . (2019) : 215-219 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
In order to be used as paving asphalts, bio-oil modified asphalt binders (biobinders) should provide adequate functionality over a wide temperature spectrum in resisting permanent deformation and fatigue cracking. The objectives of this study were to evaluate the rheological behavior and performance of biobinders under intermediate and high temperatures, and to assess the effects of bio-oil modification under a variety of oxidative aging conditions for aging susceptibility of the biobinders. The rheological and performance characterization was based on frequency sweep, linear amplitude sweep, elastic recovery, and multiple stress creep recovery tests. Experimental results indicated that an increase in the bio-oil percentage provided improved fatigue cracking performance but reduced rutting resistance and elastic recovery potential at all aging levels. Oxidative aging produced the reversed effects for both the control and biobinders. Use of bio-oil appeared to abate the aging susceptibility in terms of fatigue cracking resistance, but also rendered the asphalt binders less resistant to aging with regard to elastic recovery potential. The aging susceptibility of the petroleum asphalt and biobinders were similar concerning the rutting resistance. The correlations among the obtained performance parameters verified that the fatigue cracking resistance, rutting resistance, and elastic recovery property of the biobinders at all aging levels were generally in line with those of the petroleum asphalt, and that the biobinders could be potentially utilized as sustainable paving asphalts.
关键词 ：
Waste cooking oil Waste cooking oil Aging index Aging index Rutting resistance Rutting resistance Viscoelastic continuum damage theory Viscoelastic continuum damage theory Fatigue cracking Fatigue cracking Elastic recovery Elastic recovery
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| GB/T 7714 | Cao, Wei , Li, Xinghai , Wang, Yang et al. Intermediate and High Temperature Performance of Biobinders with Various Oxidative Aging [J]. | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2019 , 31 (12) . |
| MLA | Cao, Wei et al. "Intermediate and High Temperature Performance of Biobinders with Various Oxidative Aging" . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING 31 . 12 (2019) . |
| APA | Cao, Wei , Li, Xinghai , Wang, Yang , Wang, Chao . Intermediate and High Temperature Performance of Biobinders with Various Oxidative Aging . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2019 , 31 (12) . |
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