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In recent years, harvesting solar energy as a renewable and sustainable energy source has been studied extensively across engineering fields. Having reviewed more than 50 large-scale projects of Hydronic Asphalt Pavement (HAP), this paper offers a series of findings: the range of construction cost of asphalt collector varies between 25 and 151 €/m2 and 1.760–3.000 €/m2 for the heat exchanger and the total cost. The energy harvest capacity of asphalt solar collector systems (0,6–0,8 GJ/m2/year) and the required amount of heat for snow melting projects (100–900 W/m2) vary significantly in different projects. Using grid supports for easier pipe placement and protection of pipes against heavy loads during and after construction is recommended. Pavement solar collector systems reduced carbon dioxide emissions by 8–100% in different projects by changing their source of energy from fossil fuels to renewable and sustainable sources. Moreover, in order to further evaluate the sustainability of the HAP systems, a detailed life cycle assessment is required, including all available data related to the energy performance, pavement service life, material end-of-life recycling, etc. Finally, the paper identifies the knowledge gaps requiring further research especially in the area of energy output of the HAP systems, pavement service life and life cycle assessment.
Taher Ghalandari; Navid Hasheminejad; Wim Van Den Bergh; Cedric Vuye. A critical review on large-scale research prototypes and actual projects of hydronic asphalt pavement systems. Renewable Energy 2021, 177, 1421 -1437.
AMA StyleTaher Ghalandari, Navid Hasheminejad, Wim Van Den Bergh, Cedric Vuye. A critical review on large-scale research prototypes and actual projects of hydronic asphalt pavement systems. Renewable Energy. 2021; 177 ():1421-1437.
Chicago/Turabian StyleTaher Ghalandari; Navid Hasheminejad; Wim Van Den Bergh; Cedric Vuye. 2021. "A critical review on large-scale research prototypes and actual projects of hydronic asphalt pavement systems." Renewable Energy 177, no. : 1421-1437.
The impact of aging on asphalt binder depends on multiple factors including binder type and environmental conditions. In a previous study, Shalaby proposed two empirical equations to investigate the effects of extended short-term aging on the shear modulus and phase angle of asphalt binders. The objective of this study was to use a robust mathematical approach based on an artificial neural network (ANN) to validate the empirical approach proposed by Shalaby to model short-term aging of asphalt binders. Both methods were compared in terms of percent error, root mean squared error, and plots of predicted versus measured values for four different binders. The results showed that Shalaby’s equations exhibited sufficient accuracy to predict the effect of aging duration and temperature on the shear modulus and phase angle of asphalt binder. Furthermore, this study showed that Shalaby’s approach can be employed to estimate the increase in high-temperature true grade as a result of extended aging. Therefore, the approach provides designers with a tool to make informed decisions regarding binder type selection. In particular, such a method can be utilized when extended aging durations resulting from construction delays or extended hauling distances are expected in the field.
Seyed Reza Omranian; David Hernando; Ali Arab; Meor Othman Hamzah; Choong Kok Keong; Cedric Vuye; Wim Van Den Bergh. Validation of a model to predict the effect of short-term aging on the rheological properties of asphalt binders. Construction and Building Materials 2021, 278, 122381 .
AMA StyleSeyed Reza Omranian, David Hernando, Ali Arab, Meor Othman Hamzah, Choong Kok Keong, Cedric Vuye, Wim Van Den Bergh. Validation of a model to predict the effect of short-term aging on the rheological properties of asphalt binders. Construction and Building Materials. 2021; 278 ():122381.
Chicago/Turabian StyleSeyed Reza Omranian; David Hernando; Ali Arab; Meor Othman Hamzah; Choong Kok Keong; Cedric Vuye; Wim Van Den Bergh. 2021. "Validation of a model to predict the effect of short-term aging on the rheological properties of asphalt binders." Construction and Building Materials 278, no. : 122381.
Transparent binder is used to substitute conventional black asphalt binder and to provide light-colored pavements, whereas nano-TiO2 has the potential to promote photocatalytic and self-cleaning properties. Together, these materials provide multifunction effects and benefits when the pavement is submitted to high solar irradiation. This paper analyzes the physicochemical and rheological properties of a transparent binder modified with 0.5%, 3.0%, 6.0%, and 10.0% nano-TiO2 and compares it to the transparent base binder and conventional and polymer modified binders (PMB) without nano-TiO2. Their penetration, softening point, dynamic viscosity, master curve, black diagram, Linear Amplitude Sweep (LAS), Multiple Stress Creep Recovery (MSCR), and Fourier Transform Infrared Spectroscopy (FTIR) were obtained. The transparent binders (base and modified) seem to be workable considering their viscosity, and exhibited values between the conventional binder and PMB with respect to rutting resistance, penetration, and softening point. They showed similar behavior to the PMB, demonstrating signs of polymer modification. The addition of TiO2 seemed to reduce fatigue life, except for the 0.5% content. Nevertheless, its addition in high contents increased the rutting resistance. The TiO2 modification seems to have little effect on the chemical functional indices. The best percentage of TiO2 was 0.5%, with respect to fatigue, and 10.0% with respect to permanent deformation.
Iran Segundo; Salmon Landi; Alexandros Margaritis; Georgios Pipintakos; Elisabete Freitas; Cedric Vuye; Johan Blom; Tom Tytgat; Siegfried Denys; Joaquim Carneiro. Physicochemical and Rheological Properties of a Transparent Asphalt Binder Modified with Nano-TiO2. Nanomaterials 2020, 10, 2152 .
AMA StyleIran Segundo, Salmon Landi, Alexandros Margaritis, Georgios Pipintakos, Elisabete Freitas, Cedric Vuye, Johan Blom, Tom Tytgat, Siegfried Denys, Joaquim Carneiro. Physicochemical and Rheological Properties of a Transparent Asphalt Binder Modified with Nano-TiO2. Nanomaterials. 2020; 10 (11):2152.
Chicago/Turabian StyleIran Segundo; Salmon Landi; Alexandros Margaritis; Georgios Pipintakos; Elisabete Freitas; Cedric Vuye; Johan Blom; Tom Tytgat; Siegfried Denys; Joaquim Carneiro. 2020. "Physicochemical and Rheological Properties of a Transparent Asphalt Binder Modified with Nano-TiO2." Nanomaterials 10, no. 11: 2152.
Transparent binder is used to substitute conventional black asphalt binder and to provide light-colored pavements, whereas nano-TiO2 has the potential to promote photocatalytic and self-cleaning properties. Together, these materials provide multifunction effects and benefits when the pavement is submitted to high solar irradiation. This paper analyses the physicochemical and rheological properties of a transparent binder modified with 0.5%, 3.0%, 6.0%, and 10.0% of nano-TiO2 and compares it to the transparent base binder, and conventional and polymer modified binders (PMB) without nano-TiO2. Their penetration, softening point, dynamic viscosity, master curve, black diagram, Linear Amplitude Sweep (LAS), Multiple Stress Creep Recovery (MSCR), and Fourier-Transform Infrared Spectroscopy (FTIR) were obtained. The transparent binders (base and modified) seem to be workable considering their viscosity and exhibited values between the conventional binder and PMB regarding rutting resistance, penetration, and softening point. They showed similar behavior as the PMB, demonstrating signs of polymer-modification. The addition of TiO2 seems to reduce fatigue life, except for the 0.5% content. Nevertheless, its addition in high contents increases the rutting resistance. The TiO2 modification seems to have little effect on the chemical functional indices. The best percentage of TiO2 was 0.5%, considering fatigue and 10.0% concerning permanent deformation.
Iran Rocha Segundo; Salmon Landi Jr.; Alexandros Margaritis; Georgios Pipintakos; Elisabete Freitas; Cedric Vuye; Johan Blom; Tom Tytgat; Siegfried Denys; Joaquim Carneiro. Physicochemical and Rheological Properties of A Transparent Asphalt Binder Modified with Nano-TiO2. 2020, 1 .
AMA StyleIran Rocha Segundo, Salmon Landi Jr., Alexandros Margaritis, Georgios Pipintakos, Elisabete Freitas, Cedric Vuye, Johan Blom, Tom Tytgat, Siegfried Denys, Joaquim Carneiro. Physicochemical and Rheological Properties of A Transparent Asphalt Binder Modified with Nano-TiO2. . 2020; ():1.
Chicago/Turabian StyleIran Rocha Segundo; Salmon Landi Jr.; Alexandros Margaritis; Georgios Pipintakos; Elisabete Freitas; Cedric Vuye; Johan Blom; Tom Tytgat; Siegfried Denys; Joaquim Carneiro. 2020. "Physicochemical and Rheological Properties of A Transparent Asphalt Binder Modified with Nano-TiO2." , no. : 1.
Bitumen is one of the most important materials used in roads. During asphalt pavement construction, workers can be affected by emissions, such as volatile organic compounds (VOCs), when bitumen is heated. Therefore, it is crucial to correctly identify and measure VOCs. This paper presents a novel, promising method to determine VOC emissions. The proposed method offers a way to standardize routine measurements on a lab scale, enabling reliable comparison across bitumen types and their modifications or additives. A proton-transfer reaction time-of-flight mass spectrometer (PTR-TOF-MS) was used to monitor VOC emissions from commercial unmodified bitumen and crumb rubber modified bitumen (CRMB) with heating of up to 180 °C. Results confirmed that the temperature range of 160–180 °C is a highly influential factor for VOC emissions from heated commercial bitumen and particularly CRMB. A significant increase in alkane and aromatic emission was detected when the binders were heated to 180 °C. Sulfur-containing VOCs were almost nonexistent for the base bitumen fumes, while a significant increase was detected in the fumes when two different types of CR were added to the bitumen, even at 120 °C. The additional CR in the bituminous binder contributed to the potentially harmful VOC emission of benzothiazole, which belongs to the class of sulfur-containing compounds. The concentration of benzothiazole was 65%, 38%, and 35% higher for CR1 in comparison to CR2 at 140, 160, and 180 °C, respectively. It is clear from the results that this method allows different bitumen sources or modifications to be quickly analyzed and their VOC emissions cross-compared. If adopted and confirmed further, the method could offer the asphalt industry a viable solution to monitor VOC emissions by analyzing samples in real time at different steps of the production process.
Jaffer Borinelli; Johan Blom; Miguel Portillo-Estrada; Patricia Kara De Maeijer; Wim Van Den Bergh; Cedric Vuye. VOC Emission Analysis of Bitumen Using Proton-Transfer Reaction Time-Of-Flight Mass Spectrometry. Materials 2020, 13, 3659 .
AMA StyleJaffer Borinelli, Johan Blom, Miguel Portillo-Estrada, Patricia Kara De Maeijer, Wim Van Den Bergh, Cedric Vuye. VOC Emission Analysis of Bitumen Using Proton-Transfer Reaction Time-Of-Flight Mass Spectrometry. Materials. 2020; 13 (17):3659.
Chicago/Turabian StyleJaffer Borinelli; Johan Blom; Miguel Portillo-Estrada; Patricia Kara De Maeijer; Wim Van Den Bergh; Cedric Vuye. 2020. "VOC Emission Analysis of Bitumen Using Proton-Transfer Reaction Time-Of-Flight Mass Spectrometry." Materials 13, no. 17: 3659.
Several factors affect asphalt binder and mixture characteristics. This makes pavement performance assessment a mounting task. This paper evaluates the effects of short-term aging on compactibility and volumetric properties of asphalt mixtures using the Response Surface Method (RSM). Three different binders were utilized to produce mixtures (type AC-14). Aging temperature, aging duration, and duration in a climate chamber with increased humidity and ultraviolet lighting were considered as independent variables (IV), while compactibility and volumetric properties were regarded as dependent variables (DV). The findings revealed significant impacts of aging temperature and duration on compactibility, air voids, voids in mineral aggregate, and voids filled with asphalt, while duration in the climate chamber exhibited no significant influence on the DVs. The effects of IVs on DVs varied by binder type. This was achieved through an elaborate statistical analysis. The study, finally, demonstrates the RSM’s potential to predict changes in responses from mathematical equations—converging with the experimental observation—with excellent accuracy. Potentially, pavement contractors can use this method by replacing haulage duration and mixtures’ temperatures during paving in the developed models. It enables them to predict the pavement density and adjust pressure as well as the number of roller passes to achieve the desired requirements.
Seyed Omranian; Meor Hamzah; Georgios Pipintakos; Wim Van Den Bergh; Cedric Vuye; Mohd Hasan. Effects of Short-Term Aging on the Compactibility and Volumetric Properties of Asphalt Mixtures Using the Response Surface Method. Sustainability 2020, 12, 6181 .
AMA StyleSeyed Omranian, Meor Hamzah, Georgios Pipintakos, Wim Van Den Bergh, Cedric Vuye, Mohd Hasan. Effects of Short-Term Aging on the Compactibility and Volumetric Properties of Asphalt Mixtures Using the Response Surface Method. Sustainability. 2020; 12 (15):6181.
Chicago/Turabian StyleSeyed Omranian; Meor Hamzah; Georgios Pipintakos; Wim Van Den Bergh; Cedric Vuye; Mohd Hasan. 2020. "Effects of Short-Term Aging on the Compactibility and Volumetric Properties of Asphalt Mixtures Using the Response Surface Method." Sustainability 12, no. 15: 6181.
Asphalt mixtures are the most common types of pavement material used in the world. Characterizing the mechanical behavior of these complex materials is essential in durable, cost-effective, and sustainable pavement design. One of the important properties of asphalt mixtures is the complex modulus of elasticity. This parameter can be determined using different standardized methods, which are often expensive, complex to perform, and sensitive to the experimental setup. Therefore, recently, there has been considerable interest in developing new, easier, and more comprehensive techniques to investigate the mechanical properties of asphalt. The main objective of this research is to develop an alternative method based on an optical measurement technique (laser Doppler vibrometry). To do this, a frequency domain system identification technique based on analytical formulas (Timoshenko’s beam theory) is used to determine the complex modulus of asphalt concrete at its natural frequencies and to form their master curve. The master curve plotted by this method is compared with the master curve obtained from the standard four-point bending test, and it is concluded that the proposed method is able to produce a master curve similar to the master curve of the standard method. Therefore, the proposed method has the potential to replace the standard stiffness tests. Furthermore, the standard stiffness methods usually conduct experiments up to the maximum frequency of 30 Hz. However, the proposed method can provide accurate complex modulus at high frequencies. This makes an accurate comparison between the properties of the asphalt mixtures in high frequencies and the development of more accurate theoretical models for simulation of specimens possible.
Navid Hasheminejad; Cedric Vuye; Alexandros Margaritis; Wim Van Den Bergh; Joris Dirckx; Steve Vanlanduit. Characterizing the Complex Modulus of Asphalt Concrete Using a Scanning Laser Doppler Vibrometer. Materials 2019, 12, 3542 .
AMA StyleNavid Hasheminejad, Cedric Vuye, Alexandros Margaritis, Wim Van Den Bergh, Joris Dirckx, Steve Vanlanduit. Characterizing the Complex Modulus of Asphalt Concrete Using a Scanning Laser Doppler Vibrometer. Materials. 2019; 12 (21):3542.
Chicago/Turabian StyleNavid Hasheminejad; Cedric Vuye; Alexandros Margaritis; Wim Van Den Bergh; Joris Dirckx; Steve Vanlanduit. 2019. "Characterizing the Complex Modulus of Asphalt Concrete Using a Scanning Laser Doppler Vibrometer." Materials 12, no. 21: 3542.
Industrial waste causes environmental, economic, and social problems. In Morocco, the Jorf Lasfar Thermal Power Station produces two types of coal ash with enormous quantities: fly ash (FA) and Bottom ash (BA). FA is recovered in cement while BA is stored in landfills. To reduce the effects of BA disposal in landfills, several experimental studies have tested the possibility of their recovery in the road construction, especially as a subbase. In the first phase of this study, the BA underwent a physicochemical and geotechnical characterization. The results obtained show that the BA should be treated to improve its mechanical properties. The most commonly used materials are lime and cement. In the selected low-cost treatment, which is the subject of the second phase of the study, lime is used to improve the low pozzolanicity of BA while calcarenite sand is used to increase the compactness. Several mixtures containing BA, lime, and calcarenite sand were prepared. Each of these mixtures was compacted in modified Proctor molds and then subjected to a series of tests to study the following characteristics: compressive strength, dry and wet California Bearing Ratio (CBR), dry density and swelling. The composition of each mixture was based on an experimental design approach. The results show that the values of the compressive strength, the dry density, and the CBR index have increased after treatment, potentially leading to a valorization of the treated BA for use in a subbase.
Souad El Moudni El Alami; Raja Moussaoui; Mohamed Monkade; Khaled Lahlou; Navid Hasheminejad; Alexandros Margaritis; Wim Van Den Bergh; Cedric Vuye. Lime Treatment of Coal Bottom Ash for Use in Road Pavements: Application to El Jadida Zone in Morocco. Materials 2019, 12, 2674 .
AMA StyleSouad El Moudni El Alami, Raja Moussaoui, Mohamed Monkade, Khaled Lahlou, Navid Hasheminejad, Alexandros Margaritis, Wim Van Den Bergh, Cedric Vuye. Lime Treatment of Coal Bottom Ash for Use in Road Pavements: Application to El Jadida Zone in Morocco. Materials. 2019; 12 (17):2674.
Chicago/Turabian StyleSouad El Moudni El Alami; Raja Moussaoui; Mohamed Monkade; Khaled Lahlou; Navid Hasheminejad; Alexandros Margaritis; Wim Van Den Bergh; Cedric Vuye. 2019. "Lime Treatment of Coal Bottom Ash for Use in Road Pavements: Application to El Jadida Zone in Morocco." Materials 12, no. 17: 2674.
Pavement design is essentially and usually a structural long-term evaluation process which is needed to ensure that traffic loads are efficiently distributed at all levels of the total road structure. Furthermore, to get a complete analysis of its durability behavior, long-term monitoring should be facilitated, not only from the top by falling weight deflectometer (FWD) or core drilling but preferably from inside the structure and at exactly the same positions during a long-time interval. Considering that it is very hard to devise an efficient method to determine realistic in-situ mechanical properties of pavements, the determination of strain at the bottom of asphalt pavement layers through non-destructive tests is of a great interest. As it is known, fiber Bragg grating (FBG) sensors are the most promising candidates to effectively replace conventional strain gauges for a long-term monitoring application in a harsh environment. The main goals of this paper are to compile an overview of the recent developments worldwide in the application of fiber optics sensors (FOS) in asphalt pavement monitoring systems; to find out if those systems provide repeatable and suitable results for a long-term monitoring; if there are certain solutions to validate an inverse modelling approach based on the results of FWD and FOS.
Patricia Kara De Maeijer; Geert Luyckx; Cedric Vuye; Eli Voet; Wim Van Den Bergh; Steve Vanlanduit; Johan Braspenninckx; Nele Stevens; Jurgen De Wolf. Fiber Optics Sensors in Asphalt Pavement: State-of-the-Art Review. Infrastructures 2019, 4, 36 .
AMA StylePatricia Kara De Maeijer, Geert Luyckx, Cedric Vuye, Eli Voet, Wim Van Den Bergh, Steve Vanlanduit, Johan Braspenninckx, Nele Stevens, Jurgen De Wolf. Fiber Optics Sensors in Asphalt Pavement: State-of-the-Art Review. Infrastructures. 2019; 4 (2):36.
Chicago/Turabian StylePatricia Kara De Maeijer; Geert Luyckx; Cedric Vuye; Eli Voet; Wim Van Den Bergh; Steve Vanlanduit; Johan Braspenninckx; Nele Stevens; Jurgen De Wolf. 2019. "Fiber Optics Sensors in Asphalt Pavement: State-of-the-Art Review." Infrastructures 4, no. 2: 36.
The fatigue performance and healing ability of asphalt pavements are important for mixture design, rehabilitation, and maintenance of the roads. By analyzing these parameters in an asphalt mixture, it is possible to predict the crack formation and propagation in asphalt pavements and healing of these cracks during the rest periods. The healing effect in asphalt mixtures has been observed and verified by many researchers and different methods exist to evaluate this phenomenon. However, current methods are still inadequate to fully observe and quantify the healing phenomenon in asphalt mixtures. In this study, a digital image correlation (DIC) method is used to calculate the strain map on the surface of cylindrical asphalt specimens during the indirect tensile fatigue test. This strain map is used to detect the location of crack initiations and development of the microcracks during the experiments. Next, the specimens are unloaded and the temperature of the climate chamber is increased to 60 °C for 18 h to investigate the healing phenomenon on the surface of the specimens. It is observed that the strain reduces near the microcrack areas especially at the tip of the microcracks. Furthermore, using DIC it is possible to observe the healing rate and the minimum time required to heal the microcracks on the surface of the specimens.
Navid Hasheminejad; Cedric Vuye; Alexandros Margaritis; Bart Ribbens; Geert Jacobs; Johan Blom; Wim Van Den Bergh; Joris Dirckx; Steve Vanlanduit. Investigation of Crack Propagation and Healing of Asphalt Concrete Using Digital Image Correlation. Applied Sciences 2019, 9, 2459 .
AMA StyleNavid Hasheminejad, Cedric Vuye, Alexandros Margaritis, Bart Ribbens, Geert Jacobs, Johan Blom, Wim Van Den Bergh, Joris Dirckx, Steve Vanlanduit. Investigation of Crack Propagation and Healing of Asphalt Concrete Using Digital Image Correlation. Applied Sciences. 2019; 9 (12):2459.
Chicago/Turabian StyleNavid Hasheminejad; Cedric Vuye; Alexandros Margaritis; Bart Ribbens; Geert Jacobs; Johan Blom; Wim Van Den Bergh; Joris Dirckx; Steve Vanlanduit. 2019. "Investigation of Crack Propagation and Healing of Asphalt Concrete Using Digital Image Correlation." Applied Sciences 9, no. 12: 2459.
Road pavement develops distresses over time, which increase tyre/road noise. This work focuses on the impact of these distresses on environmental noise. To calculate the environmental noise, a method to transform Close ProXimity (CPX) measurement results into the required input for traffic noise models was defined and used. The tyre/road noise levels were determined by the CPX method for three types of pavement, with three types of distress, at three different speed levels. The study was carried out in the city center of Guimarães, a medium-sized Portuguese city. Using the NMPB model, 18 noise maps were produced for the passing of one single vehicle, taking into account two levels of distress (50% and 100%) for the pavement. The presence of distresses increased the noise, calculated at control points, by up to 7.1 dBA, and the percentage of the population exposed to levels over 45 dB was more than 11%. It was shown that pavement maintenance at early stages of distress development is, particularly for low-speed roads, very important to reduce environmental noise and population exposure. A comprehensive selection of the type of surface and speed control policies can mitigate the impact of a lack of maintenance.
Elisabete Freitas; Lígia Silva; Cedric Vuye. The Influence of Pavement Degradation on Population Exposure to Road Traffic Noise. Coatings 2019, 9, 298 .
AMA StyleElisabete Freitas, Lígia Silva, Cedric Vuye. The Influence of Pavement Degradation on Population Exposure to Road Traffic Noise. Coatings. 2019; 9 (5):298.
Chicago/Turabian StyleElisabete Freitas; Lígia Silva; Cedric Vuye. 2019. "The Influence of Pavement Degradation on Population Exposure to Road Traffic Noise." Coatings 9, no. 5: 298.
The utilization of Reclaimed Asphalt (RA) in the road construction sector induces considerable economic and ecological benefits. The blending of the recycled material with new components is believed to be of great importance for the mixture’s properties. An extensive knowledge of the blending of the materials is crucial in optimizing the use of RA, especially at higher recycling rates. In this paper, the applicability of Fourier transform infrared (FTIR) microscopy in attenuated total reflectance (ATR) mode to study the bituminous coating of RA granulates is investigated. This method is a promising alternative to trace heterogeneous areas within the coating compared to methods that require extraction and recovery of bitumen. A method for sample preparation and FTIR spectra analysis is proposed. Four different samples were analyzed: a reference RA granulate, two types of RA granulates mixed with neat bitumen, and a RA granulate with rejuvenator. The results show that the use of ATR-FTIR microscope allows the tracing of different components, indications of blending, as well as proof of rejuvenation of the aged bituminous area.
Alexandros Margaritis; Giorgio Tofani; Geert Jacobs; Johan Blom; Serge Tavernier; Cedric Vuye; Wim Van Den Bergh. On the Applicability of ATR-FTIR Microscopy to Evaluate the Blending between Neat Bitumen and Bituminous Coating of Reclaimed Asphalt. Coatings 2019, 9, 240 .
AMA StyleAlexandros Margaritis, Giorgio Tofani, Geert Jacobs, Johan Blom, Serge Tavernier, Cedric Vuye, Wim Van Den Bergh. On the Applicability of ATR-FTIR Microscopy to Evaluate the Blending between Neat Bitumen and Bituminous Coating of Reclaimed Asphalt. Coatings. 2019; 9 (4):240.
Chicago/Turabian StyleAlexandros Margaritis; Giorgio Tofani; Geert Jacobs; Johan Blom; Serge Tavernier; Cedric Vuye; Wim Van Den Bergh. 2019. "On the Applicability of ATR-FTIR Microscopy to Evaluate the Blending between Neat Bitumen and Bituminous Coating of Reclaimed Asphalt." Coatings 9, no. 4: 240.
A laser Doppler vibrometer (LDV) is a noncontact optical measurement device to measure the vibration velocities of particular points on the surface of an object. Even though LDV has become more popular in road engineering in recent years, their signal-to-noise ratio (SNR) is strongly dependent on light scattering properties of the surface which, in some cases, needs to be properly conditioned. SNR is the main limitation in LDV instrumentation when measuring on low diffusive surfaces like pavements; therefore, an investigation on the SNR of different LDV devices on different surface conditions is of great importance. The objective of this research is to investigate the quality of two types of commercially available LDV systems—helium–neon (He–Ne)-based vibrometers and recently developed infrared vibrometers—on different surface conditions, i.e., retroreflective tape, white tape, black tape, and asphalt concrete. Both noise floor and modal analysis experiments are carried out on these surface conditions. It is shown that the noise floor of the He–Ne LDV is higher when dealing with a noncooperative dark surface, such as asphalt concrete, and it can be improved by improving the surface quality or by using an infrared LDV, which consequently improves the modal analysis experiments performed on pavement materials.
Navid Hasheminejad; Cedric Vuye; Wim Van Den Bergh; Joris Dirckx; Steve Vanlanduit. A Comparative Study of Laser Doppler Vibrometers for Vibration Measurements on Pavement Materials. Infrastructures 2018, 3, 47 .
AMA StyleNavid Hasheminejad, Cedric Vuye, Wim Van Den Bergh, Joris Dirckx, Steve Vanlanduit. A Comparative Study of Laser Doppler Vibrometers for Vibration Measurements on Pavement Materials. Infrastructures. 2018; 3 (4):47.
Chicago/Turabian StyleNavid Hasheminejad; Cedric Vuye; Wim Van Den Bergh; Joris Dirckx; Steve Vanlanduit. 2018. "A Comparative Study of Laser Doppler Vibrometers for Vibration Measurements on Pavement Materials." Infrastructures 3, no. 4: 47.
Improper attention to construction joints in a building may lead to localized cold spots on the inside surfaces of the building and air leakage through the envelope. This in turn can affect the thermal comfort of residents due to small-area radiant asymmetry and low-speed draft. The effect of these two local discomfort events on thermal comfort were investigated in two sets of experiments. The test setting consisted of a cool-to-neutral environment, in which a custom-built arrangement replicated small-area radiant asymmetry and low-speed draft caused by improper retrofitting of construction joints. Participants rated their thermal sensation and comfort for three consecutive test conditions associated with radiant asymmetry or draft. Each radiant asymmetry condition consisted of a combination of the height and temperature of a small cold spot and the distance between the cold spot and the subject. The draft conditions comprised the height of the draft outlet and the speed and temperature of the airflow. The heights of the cold spot and draft outlet correspond to the feet, chest and head level of a seated person. Draft perception was found to not be linked to the experimental parameters of the draft conditions, and as such was not impacted by improperly retrofitted construction joints. However, several statistically significant relationships were found between the radiant asymmetry parameters and thermal sensation. Nonetheless, these effects were very small, and the variance explained by these parameters was very low. Therefore, small-area radiant asymmetry cannot be used to make practical decisions in retrofitting strategies for construction joints.
Stijn Van Craenendonck; Leen Lauriks; Cedric Vuye; Jarl Kampen. Local effects on thermal comfort: Experimental investigation of small-area radiant cooling and low-speed draft caused by improperly retrofitted construction joints. Building and Environment 2018, 147, 188 -198.
AMA StyleStijn Van Craenendonck, Leen Lauriks, Cedric Vuye, Jarl Kampen. Local effects on thermal comfort: Experimental investigation of small-area radiant cooling and low-speed draft caused by improperly retrofitted construction joints. Building and Environment. 2018; 147 ():188-198.
Chicago/Turabian StyleStijn Van Craenendonck; Leen Lauriks; Cedric Vuye; Jarl Kampen. 2018. "Local effects on thermal comfort: Experimental investigation of small-area radiant cooling and low-speed draft caused by improperly retrofitted construction joints." Building and Environment 147, no. : 188-198.
Accurate determination of the mechanical properties of asphalt concrete is very important in Road Engineering. The traditional method to calculate these properties is to run experiments using a hydraulic/pneumatic actuator and strain gauges to apply stress and measure the strain. However, in the last decade optical measurement techniques have become popular for strain calculation on the surface of the specimen and detecting the cracks on the surface. In this study, digital image correlation is used to estimate the strain map on the surface of an asphalt specimen, predict the location of crack initiation, and investigate the healing phenomenon in asphalt concrete.
Navid Hasheminejad; Alexandros Margaritis; Bart Ribbens; Cedric Vuye; Johan Blom; Wim Van Den Bergh; Joris Dirckx; Steve Vanlanduit. Digital image correlation to investigate crack propagation and healing of asphalt concrete. Proceedings of The Eighteenth International Conference of Experimental Mechanics 2018, 2, 473 .
AMA StyleNavid Hasheminejad, Alexandros Margaritis, Bart Ribbens, Cedric Vuye, Johan Blom, Wim Van Den Bergh, Joris Dirckx, Steve Vanlanduit. Digital image correlation to investigate crack propagation and healing of asphalt concrete. Proceedings of The Eighteenth International Conference of Experimental Mechanics. 2018; 2 (8):473.
Chicago/Turabian StyleNavid Hasheminejad; Alexandros Margaritis; Bart Ribbens; Cedric Vuye; Johan Blom; Wim Van Den Bergh; Joris Dirckx; Steve Vanlanduit. 2018. "Digital image correlation to investigate crack propagation and healing of asphalt concrete." Proceedings of The Eighteenth International Conference of Experimental Mechanics 2, no. 8: 473.
In the present study, a new approach to the installation of fiber Bragg grating (FBG) sensors in three asphalt pavement layers (the surface layer and both base layers) was implemented for the first time in Belgium. Fiber Bragg grating sensors (FBGs) are diagnostic tools that accurately and efficiently monitor in situ structural behavior. However, nowadays, this technology is not commonly used in asphalt due to its application restrictions under installation and service conditions. FBGs are fragile and break easily under loading. Therefore, there is a need for suitable protection of FBG sensors if they are to be installed during the rough construction process and exposed to heavy-duty loading afterwards. The main objective of the present study is to show the FBG results only for the initial construction process, and, if successful, to continue studying this FBG monitoring system and to plan the next research step by adjusting the system for its application in heavy-duty pavements. Two approaches to FBG installation in three asphalt layers (placed at the bottom of each layer) were tested in the present study: (1) installation of FBGs in prefabricated asphalt specimens in the base layer, directly on the base, and (2) installation of FBGs on the surface of the previously constructed asphalt layer. Both innovative approaches allow the implementation of FBGs without sawing the whole layer into two parts. The obtained results proved a survival rate of 100% for the FBGs. It can be concluded that these new described methods of FBG installation—using a cross-section configuration to carry out strain measurements in two directions (transverse and longitudinal)—can be applied for the monitoring of heavy-duty pavements, while providing the possibility to further re-evaluate current pavement design methods used in Flanders (Belgium).
Patricia Kara De Maeijer; Wim Van Den Bergh; Cedric Vuye. Fiber Bragg Grating Sensors in Three Asphalt Pavement Layers. Infrastructures 2018, 3, 16 .
AMA StylePatricia Kara De Maeijer, Wim Van Den Bergh, Cedric Vuye. Fiber Bragg Grating Sensors in Three Asphalt Pavement Layers. Infrastructures. 2018; 3 (2):16.
Chicago/Turabian StylePatricia Kara De Maeijer; Wim Van Den Bergh; Cedric Vuye. 2018. "Fiber Bragg Grating Sensors in Three Asphalt Pavement Layers." Infrastructures 3, no. 2: 16.
Stijn Van Craenendonck; Leen Lauriks; Cedric Vuye; Jarl Kampen. A review of human thermal comfort experiments in controlled and semi-controlled environments. Renewable and Sustainable Energy Reviews 2018, 82, 3365 -3378.
AMA StyleStijn Van Craenendonck, Leen Lauriks, Cedric Vuye, Jarl Kampen. A review of human thermal comfort experiments in controlled and semi-controlled environments. Renewable and Sustainable Energy Reviews. 2018; 82 ():3365-3378.
Chicago/Turabian StyleStijn Van Craenendonck; Leen Lauriks; Cedric Vuye; Jarl Kampen. 2018. "A review of human thermal comfort experiments in controlled and semi-controlled environments." Renewable and Sustainable Energy Reviews 82, no. : 3365-3378.
After the first rehabilitation of runway 07R/25L in 2015, runway 01/19 was reconstructed in the summer of 2016, as part of a cycle where all runway pavements at Brussels airport are completely renovated each thirty years. The top layer is a Marshall asphalt with a polymer modified bitumen. To optimize the water drainage the central part of the runway (47 m wide) is grooved instead of applying an anti-skid layer. In this paper the focus is on the durability of the grooved top layer. Two different Marshall asphalt mixtures with a different maximum granulate size (10 mm or 14 mm) are compared, both in the laboratory and in a full-scale trial. In the laboratory the resistance against rutting and raveling are investigated for both mixtures with and without adhesion promotor, which did not show a positive effect. In the full-scale trial the compactability and impact of both a longer curing period and a variation in the degree of compaction on the groove stability is investigated for both mixtures using a heavy truck. No visual differences could be found except in areas which were undercompacted and showed more damage to the grooves.
Cedric Vuye; Karolien Couscheir; Leen Lauriks; Wim Van Den Bergh; Philippe Van Bouwel. The influence of mixture composition, adhesion promotor and compaction degree on the groove stability of grooved Marshall asphalt. IOP Conference Series: Materials Science and Engineering 2017, 236, 012006 .
AMA StyleCedric Vuye, Karolien Couscheir, Leen Lauriks, Wim Van Den Bergh, Philippe Van Bouwel. The influence of mixture composition, adhesion promotor and compaction degree on the groove stability of grooved Marshall asphalt. IOP Conference Series: Materials Science and Engineering. 2017; 236 (1):012006.
Chicago/Turabian StyleCedric Vuye; Karolien Couscheir; Leen Lauriks; Wim Van Den Bergh; Philippe Van Bouwel. 2017. "The influence of mixture composition, adhesion promotor and compaction degree on the groove stability of grooved Marshall asphalt." IOP Conference Series: Materials Science and Engineering 236, no. 1: 012006.
The mechanical performance of an asphalt pavement affects its durability – thus carbon footprint. Many parameters contribute to the success of a durable asphalt mix, e.g. material selection, an accurate mix and even the road design in which the asphalt mix quality is quantified. The quality of the asphalt mix, by its mechanical properties, is also related to the compaction degree. However, and specifically for high volume rates, the laying process at the construction site needs an effective method to monitor and adjust immediately the compaction quality before cooling and without damaging the layer, which is now absent. In this paper the use of a non-nuclear density gauge (PQI – Pavement Quality Indicator) is evaluated, based on a site at Brussels Airport. Considering the outcome of the present research, this PQI is advised as a unique tool for continuous density measurements and allow immediate adjustments during compaction, and decreases the number of core drilling for quality control, and as a posteriori asphalt pavement density test where cores are prohibited. The use of PQI could be recommended to be a part of the standard quality control process in the Flemish region.
Wim Van Den Bergh; Cedric Vuye; Patricia Kara; Karolien Couscheir; Johan Blom; Philippe Van Bouwel. The use of a non-nuclear density gauge for monitoring the compaction process of asphalt pavement. IOP Conference Series: Materials Science and Engineering 2017, 236, 12014 .
AMA StyleWim Van Den Bergh, Cedric Vuye, Patricia Kara, Karolien Couscheir, Johan Blom, Philippe Van Bouwel. The use of a non-nuclear density gauge for monitoring the compaction process of asphalt pavement. IOP Conference Series: Materials Science and Engineering. 2017; 236 ():12014.
Chicago/Turabian StyleWim Van Den Bergh; Cedric Vuye; Patricia Kara; Karolien Couscheir; Johan Blom; Philippe Van Bouwel. 2017. "The use of a non-nuclear density gauge for monitoring the compaction process of asphalt pavement." IOP Conference Series: Materials Science and Engineering 236, no. : 12014.
Stijn Van Craenendonck; Leen Lauriks; Cedric Vuye. Energy Efficient Renovation of Belgian Houses: Sensitivity Analysis for Thermal Bridges. Energy Procedia 2016, 96, 158 -169.
AMA StyleStijn Van Craenendonck, Leen Lauriks, Cedric Vuye. Energy Efficient Renovation of Belgian Houses: Sensitivity Analysis for Thermal Bridges. Energy Procedia. 2016; 96 ():158-169.
Chicago/Turabian StyleStijn Van Craenendonck; Leen Lauriks; Cedric Vuye. 2016. "Energy Efficient Renovation of Belgian Houses: Sensitivity Analysis for Thermal Bridges." Energy Procedia 96, no. : 158-169.