The Experts below are selected from a list of 141 Experts worldwide ranked by ideXlab platform
Ying-yuan Wang - One of the best experts on this subject based on the ideXlab platform.
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smart Bituminous Material combining anti icing and self healing functions using electrothermal graphene microcapsules containing oily rejuvenator
Construction and Building Materials, 2019Co-Authors: Jun-feng Su, Xiao Long Zhang, Ru Mu, Ying-yuan WangAbstract:Abstract Pavement icing is a worldwide problem causing serious traffic accidents every year. Recently, new strategic recommendation is made for applying conductive pavement Materials to enhance the public safety in snow and ice conditions. Under the excitation of this research background, the aim of this work was to design a smart Bituminous Material combining anti-icing and self-healing functions using electrothermal graphene microcapsules containing oily rejuvenator. Microcapsule particles were fabricated with an average size of 20 um and 5.0 wt% graphene. Bitumen samples with various content microcapsules (1.0–10.0 wt%) had an increasing electric conductivity trend tested using a four-point probe electrical resistivity instrument. In addition, thermal conductivity of bitumen samples had been greatly enhanced because of the existence of graphene. Anti-icing capability of bitumen samples with graphene microcapsules was sharply increased under a direct voltage (50 V) based on their ice shear force values. Self-healing efficiency of bitumen samples was evaluated by an improved mechanical properties set-up named the beam on elastic foundation (BOEF). With the effect of electrothermal energy conversion, the bitumen samples kept a higher self-healing efficiency after five healing cycles under low temperature of 0 °C. These results imply that the graphene microcapsules containing oily rejuvenator is a promise approach to realize the smart pavement combining anti-icing and self-healing functions.
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investigating the electrothermal self healing Bituminous composite Material using microcapsules containing rejuvenator with graphene organic hybrid structure shells
Construction and Building Materials, 2018Co-Authors: Xiao Long Zhang, Jun-feng Su, Ying-yuan WangAbstract:Abstract Self-healing Bituminous Material has become a hot research topic in self-healing Materials, and this smart self-healing approach is a promising a revolution in pavement Material technology. The aim of this work was to investigate the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic. The microcapsules owned electric conductivity capability because of the advent of graphene, and realized the self-healing through the two approaches of heat induction and rejuvenation. Microcapsule shells were fabricated using a strength hexamethoxymethylmelamine (HMMM) resin and graphene by a two-step hybrid polymerization. Experimental tests were carried out to character the morphology, integrity and shell structure. It was found that the electric charge balance determined the graphene/HMMM microstructure. The graphene content in shells could not be greatly increased under an electrostatic balance in emulsion. XPS, EDS, TEM and AFM results indicated that the graphene had deposited on shells. TGA/DTG tests implied that the thermal decomposition temperature of microcapsules with graphene had increased to about 350 °C. The thermal conductivity of microcapsules had been sharply increased to about 8.0 W/m2·K with 2.0 wt% graphene in shells. At the same time, electrical resistivity of microcapsules/bitumen samples had a decrease with more graphene in bitumen. The self-healing efficiency of composite samples was evaluated by a beam on elastic foundation (BOEF) mechanical process including loading-unloading-reloading cycles under temperature of 0 °C. It was found that the samples had an enhanced self-healing capability because of the electrothermal self-healing mechanism. The crack surfaces of bitumen were softened under electrothermal effect. Moreover, the released rejuvenator diffused into aged bitumen with a faster rate under the help of heat energy.
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Investigating the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic hybrid structure shells
Construction and Building Materials, 2018Co-Authors: Xiao Long Zhang, Yan Dong Guo, Shan Han, Jun-feng Su, Ying-yuan Wang, Yi Qiu TanAbstract:Self-healing Bituminous Material has become a hot research topic in self-healing Materials, and this smart self-healing approach is a promising a revolution in pavement Material technology. The aim of this work was to investigate the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic. The microcapsules owned electric conductivity capability because of the advent of graphene, and realized the self-healing through the two approaches of heat induction and rejuvenation. Microcapsule shells were fabricated using a strength hexamethoxymethylmelamine (HMMM) resin and graphene by a two-step hybrid polymerization. Experimental tests were carried out to character the morphology, integrity and shell structure. It was found that the electric charge balance determined the graphene/HMMM microstructure. The graphene content in shells could not be greatly increased under an electrostatic balance in emulsion. XPS, EDS, TEM and AFM results indicated that the graphene had deposited on shells. TGA/DTG tests implied that the thermal decomposition temperature of microcapsules with graphene had increased to about 350 °C. The thermal conductivity of microcapsules had been sharply increased to about 8.0 W/m2·K with 2.0 wt% graphene in shells. At the same time, electrical resistivity of microcapsules/bitumen samples had a decrease with more graphene in bitumen. The self-healing efficiency of composite samples was evaluated by a beam on elastic foundation (BOEF) mechanical process including loading-unloading-reloading cycles under temperature of 0 °C. It was found that the samples had an enhanced self-healing capability because of the electrothermal self-healing mechanism. The crack surfaces of bitumen were softened under electrothermal effect. Moreover, the released rejuvenator diffused into aged bitumen with a faster rate under the help of heat energy.
Xiao Long Zhang - One of the best experts on this subject based on the ideXlab platform.
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smart Bituminous Material combining anti icing and self healing functions using electrothermal graphene microcapsules containing oily rejuvenator
Construction and Building Materials, 2019Co-Authors: Jun-feng Su, Xiao Long Zhang, Ru Mu, Ying-yuan WangAbstract:Abstract Pavement icing is a worldwide problem causing serious traffic accidents every year. Recently, new strategic recommendation is made for applying conductive pavement Materials to enhance the public safety in snow and ice conditions. Under the excitation of this research background, the aim of this work was to design a smart Bituminous Material combining anti-icing and self-healing functions using electrothermal graphene microcapsules containing oily rejuvenator. Microcapsule particles were fabricated with an average size of 20 um and 5.0 wt% graphene. Bitumen samples with various content microcapsules (1.0–10.0 wt%) had an increasing electric conductivity trend tested using a four-point probe electrical resistivity instrument. In addition, thermal conductivity of bitumen samples had been greatly enhanced because of the existence of graphene. Anti-icing capability of bitumen samples with graphene microcapsules was sharply increased under a direct voltage (50 V) based on their ice shear force values. Self-healing efficiency of bitumen samples was evaluated by an improved mechanical properties set-up named the beam on elastic foundation (BOEF). With the effect of electrothermal energy conversion, the bitumen samples kept a higher self-healing efficiency after five healing cycles under low temperature of 0 °C. These results imply that the graphene microcapsules containing oily rejuvenator is a promise approach to realize the smart pavement combining anti-icing and self-healing functions.
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investigating the electrothermal self healing Bituminous composite Material using microcapsules containing rejuvenator with graphene organic hybrid structure shells
Construction and Building Materials, 2018Co-Authors: Xiao Long Zhang, Jun-feng Su, Ying-yuan WangAbstract:Abstract Self-healing Bituminous Material has become a hot research topic in self-healing Materials, and this smart self-healing approach is a promising a revolution in pavement Material technology. The aim of this work was to investigate the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic. The microcapsules owned electric conductivity capability because of the advent of graphene, and realized the self-healing through the two approaches of heat induction and rejuvenation. Microcapsule shells were fabricated using a strength hexamethoxymethylmelamine (HMMM) resin and graphene by a two-step hybrid polymerization. Experimental tests were carried out to character the morphology, integrity and shell structure. It was found that the electric charge balance determined the graphene/HMMM microstructure. The graphene content in shells could not be greatly increased under an electrostatic balance in emulsion. XPS, EDS, TEM and AFM results indicated that the graphene had deposited on shells. TGA/DTG tests implied that the thermal decomposition temperature of microcapsules with graphene had increased to about 350 °C. The thermal conductivity of microcapsules had been sharply increased to about 8.0 W/m2·K with 2.0 wt% graphene in shells. At the same time, electrical resistivity of microcapsules/bitumen samples had a decrease with more graphene in bitumen. The self-healing efficiency of composite samples was evaluated by a beam on elastic foundation (BOEF) mechanical process including loading-unloading-reloading cycles under temperature of 0 °C. It was found that the samples had an enhanced self-healing capability because of the electrothermal self-healing mechanism. The crack surfaces of bitumen were softened under electrothermal effect. Moreover, the released rejuvenator diffused into aged bitumen with a faster rate under the help of heat energy.
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Investigating the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic hybrid structure shells
Construction and Building Materials, 2018Co-Authors: Xiao Long Zhang, Yan Dong Guo, Shan Han, Jun-feng Su, Ying-yuan Wang, Yi Qiu TanAbstract:Self-healing Bituminous Material has become a hot research topic in self-healing Materials, and this smart self-healing approach is a promising a revolution in pavement Material technology. The aim of this work was to investigate the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic. The microcapsules owned electric conductivity capability because of the advent of graphene, and realized the self-healing through the two approaches of heat induction and rejuvenation. Microcapsule shells were fabricated using a strength hexamethoxymethylmelamine (HMMM) resin and graphene by a two-step hybrid polymerization. Experimental tests were carried out to character the morphology, integrity and shell structure. It was found that the electric charge balance determined the graphene/HMMM microstructure. The graphene content in shells could not be greatly increased under an electrostatic balance in emulsion. XPS, EDS, TEM and AFM results indicated that the graphene had deposited on shells. TGA/DTG tests implied that the thermal decomposition temperature of microcapsules with graphene had increased to about 350 °C. The thermal conductivity of microcapsules had been sharply increased to about 8.0 W/m2·K with 2.0 wt% graphene in shells. At the same time, electrical resistivity of microcapsules/bitumen samples had a decrease with more graphene in bitumen. The self-healing efficiency of composite samples was evaluated by a beam on elastic foundation (BOEF) mechanical process including loading-unloading-reloading cycles under temperature of 0 °C. It was found that the samples had an enhanced self-healing capability because of the electrothermal self-healing mechanism. The crack surfaces of bitumen were softened under electrothermal effect. Moreover, the released rejuvenator diffused into aged bitumen with a faster rate under the help of heat energy.
Jun-feng Su - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of a cleaner de-icing production of Bituminous Material blending with graphene by electrothermal energy conversion
Journal of Cleaner Production, 2020Co-Authors: Jun-feng Su, Li-qing WangAbstract:Abstract De-icing of pavement is essential for road traffic safety and road maintenance. The addition of graphene can endow Bituminous Material with electrical conductivity. The aim of this work is to evaluate a cleaner de-icing production of Bituminous Material blending with graphene by electrothermal energy conversion. The dispersion state of different amount of graphene in bitumen was investigated. Electrical resistivity values of bitumen samples decreased sharply with the increase in the amount of graphene addition. The graphene/bitumen sample has a resistivity of 0.87 × 10−2 Ω m when the amount of graphene added is 3.0 wt%. Thermal conductivity values of bitumen samples were measured and infrared thermographs of bitumen samples were used to prove the enhancement of thermal transmission in bitumen with the additive of graphene. The surface temperature of the bitumen samples blending with graphene can reach 39.3 °C when the voltage is greater than 50 V. The surface de-icing capability was evaluated by comparing ice shear force values of graphene/bitumen samples under direct current voltages. It was found that with only 0.5% graphene can realize the electrothermal de-icing purpose. These results prove the feasibility of this de-icing method using appropriate quantity of graphene.
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smart Bituminous Material combining anti icing and self healing functions using electrothermal graphene microcapsules containing oily rejuvenator
Construction and Building Materials, 2019Co-Authors: Jun-feng Su, Xiao Long Zhang, Ru Mu, Ying-yuan WangAbstract:Abstract Pavement icing is a worldwide problem causing serious traffic accidents every year. Recently, new strategic recommendation is made for applying conductive pavement Materials to enhance the public safety in snow and ice conditions. Under the excitation of this research background, the aim of this work was to design a smart Bituminous Material combining anti-icing and self-healing functions using electrothermal graphene microcapsules containing oily rejuvenator. Microcapsule particles were fabricated with an average size of 20 um and 5.0 wt% graphene. Bitumen samples with various content microcapsules (1.0–10.0 wt%) had an increasing electric conductivity trend tested using a four-point probe electrical resistivity instrument. In addition, thermal conductivity of bitumen samples had been greatly enhanced because of the existence of graphene. Anti-icing capability of bitumen samples with graphene microcapsules was sharply increased under a direct voltage (50 V) based on their ice shear force values. Self-healing efficiency of bitumen samples was evaluated by an improved mechanical properties set-up named the beam on elastic foundation (BOEF). With the effect of electrothermal energy conversion, the bitumen samples kept a higher self-healing efficiency after five healing cycles under low temperature of 0 °C. These results imply that the graphene microcapsules containing oily rejuvenator is a promise approach to realize the smart pavement combining anti-icing and self-healing functions.
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investigating the electrothermal self healing Bituminous composite Material using microcapsules containing rejuvenator with graphene organic hybrid structure shells
Construction and Building Materials, 2018Co-Authors: Xiao Long Zhang, Jun-feng Su, Ying-yuan WangAbstract:Abstract Self-healing Bituminous Material has become a hot research topic in self-healing Materials, and this smart self-healing approach is a promising a revolution in pavement Material technology. The aim of this work was to investigate the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic. The microcapsules owned electric conductivity capability because of the advent of graphene, and realized the self-healing through the two approaches of heat induction and rejuvenation. Microcapsule shells were fabricated using a strength hexamethoxymethylmelamine (HMMM) resin and graphene by a two-step hybrid polymerization. Experimental tests were carried out to character the morphology, integrity and shell structure. It was found that the electric charge balance determined the graphene/HMMM microstructure. The graphene content in shells could not be greatly increased under an electrostatic balance in emulsion. XPS, EDS, TEM and AFM results indicated that the graphene had deposited on shells. TGA/DTG tests implied that the thermal decomposition temperature of microcapsules with graphene had increased to about 350 °C. The thermal conductivity of microcapsules had been sharply increased to about 8.0 W/m2·K with 2.0 wt% graphene in shells. At the same time, electrical resistivity of microcapsules/bitumen samples had a decrease with more graphene in bitumen. The self-healing efficiency of composite samples was evaluated by a beam on elastic foundation (BOEF) mechanical process including loading-unloading-reloading cycles under temperature of 0 °C. It was found that the samples had an enhanced self-healing capability because of the electrothermal self-healing mechanism. The crack surfaces of bitumen were softened under electrothermal effect. Moreover, the released rejuvenator diffused into aged bitumen with a faster rate under the help of heat energy.
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Investigating the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic hybrid structure shells
Construction and Building Materials, 2018Co-Authors: Xiao Long Zhang, Yan Dong Guo, Shan Han, Jun-feng Su, Ying-yuan Wang, Yi Qiu TanAbstract:Self-healing Bituminous Material has become a hot research topic in self-healing Materials, and this smart self-healing approach is a promising a revolution in pavement Material technology. The aim of this work was to investigate the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic. The microcapsules owned electric conductivity capability because of the advent of graphene, and realized the self-healing through the two approaches of heat induction and rejuvenation. Microcapsule shells were fabricated using a strength hexamethoxymethylmelamine (HMMM) resin and graphene by a two-step hybrid polymerization. Experimental tests were carried out to character the morphology, integrity and shell structure. It was found that the electric charge balance determined the graphene/HMMM microstructure. The graphene content in shells could not be greatly increased under an electrostatic balance in emulsion. XPS, EDS, TEM and AFM results indicated that the graphene had deposited on shells. TGA/DTG tests implied that the thermal decomposition temperature of microcapsules with graphene had increased to about 350 °C. The thermal conductivity of microcapsules had been sharply increased to about 8.0 W/m2·K with 2.0 wt% graphene in shells. At the same time, electrical resistivity of microcapsules/bitumen samples had a decrease with more graphene in bitumen. The self-healing efficiency of composite samples was evaluated by a beam on elastic foundation (BOEF) mechanical process including loading-unloading-reloading cycles under temperature of 0 °C. It was found that the samples had an enhanced self-healing capability because of the electrothermal self-healing mechanism. The crack surfaces of bitumen were softened under electrothermal effect. Moreover, the released rejuvenator diffused into aged bitumen with a faster rate under the help of heat energy.
S. Amirkhanian - One of the best experts on this subject based on the ideXlab platform.
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Identification of asphalt aging characterization by spectrophotometry technique
Fuel, 2018Co-Authors: Xiangdao Hou, Jingang Wang, Feipeng Xiao, S. AmirkhanianAbstract:During the construction and service life of asphalt pavement, the Bituminous Material is inevitably exposed to sunlight, oxygen, water, ambient temperature and other climate conditions, which lead to aging or oxidation of asphalt binder and thus accelerate the deterioration of asphalt pavement. In order to characterize the aging impact of asphalt Materials, conventional methods have been used including rheological test, Fourier transform infrared spectroscopy (FTIR), Gel Permeation Chromatography (GPC), etc. However, some drawbacks limited their application in practice such as the complexity of test procedures and the expensive test instruments. A novel method, spectrophotometry, was introduced in this study to analyze the aging characteristics of asphalt binder. The sample preparation method and test procedures were developed and the correlation analysis was used to assess the feasibility of this method. The experiments illustrated that a 2 g/L “toluene-heptane” asphalt suspension (0.2 g/mL in toluene, 2 g/L in heptane) and a test of absorbance area from 700 nm to 900 nm could be effectively used to characterize the aging of asphalt. Furthermore, the test and statistical results also demonstrated that the absorbance change of asphalt during the aging procedure was from the increased asphaltene. Moreover, the FTIR test indicated that the feasibility of using spectrophotometry to characterize the aging of asphalt. In addition, the research indicated that the sources and penetration grades could not be used as mutual indices to characterize the aging resistance of asphalt.
Yi Qiu Tan - One of the best experts on this subject based on the ideXlab platform.
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Investigating the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic hybrid structure shells
Construction and Building Materials, 2018Co-Authors: Xiao Long Zhang, Yan Dong Guo, Shan Han, Jun-feng Su, Ying-yuan Wang, Yi Qiu TanAbstract:Self-healing Bituminous Material has become a hot research topic in self-healing Materials, and this smart self-healing approach is a promising a revolution in pavement Material technology. The aim of this work was to investigate the electrothermal self-healing Bituminous composite Material using microcapsules containing rejuvenator with graphene/organic. The microcapsules owned electric conductivity capability because of the advent of graphene, and realized the self-healing through the two approaches of heat induction and rejuvenation. Microcapsule shells were fabricated using a strength hexamethoxymethylmelamine (HMMM) resin and graphene by a two-step hybrid polymerization. Experimental tests were carried out to character the morphology, integrity and shell structure. It was found that the electric charge balance determined the graphene/HMMM microstructure. The graphene content in shells could not be greatly increased under an electrostatic balance in emulsion. XPS, EDS, TEM and AFM results indicated that the graphene had deposited on shells. TGA/DTG tests implied that the thermal decomposition temperature of microcapsules with graphene had increased to about 350 °C. The thermal conductivity of microcapsules had been sharply increased to about 8.0 W/m2·K with 2.0 wt% graphene in shells. At the same time, electrical resistivity of microcapsules/bitumen samples had a decrease with more graphene in bitumen. The self-healing efficiency of composite samples was evaluated by a beam on elastic foundation (BOEF) mechanical process including loading-unloading-reloading cycles under temperature of 0 °C. It was found that the samples had an enhanced self-healing capability because of the electrothermal self-healing mechanism. The crack surfaces of bitumen were softened under electrothermal effect. Moreover, the released rejuvenator diffused into aged bitumen with a faster rate under the help of heat energy.
