Article
Green & Sustainable Science & Technology
Weiying Wang, Huailei Cheng, Lijun Sun, Yiren Sun, Ning Liu
Summary: This research evaluates the various performances of recycled warm-mix asphalt (RWMA), finding that increasing reclaimed asphalt pavement (RAP) content reduces moisture damage resistance and low-temperature performance, but this can be compensated by using warm-mix additive (WMA). By contrast, rutting resistance and fatigue performance improve with an appropriate combination of WMA additive and RAP content. Statistical analyses reveal that RAP content has the greatest impact on RWMA performance, while WMA additive type predominantly influences moisture susceptibility. The findings provide references for regulating RWMA performances by adjusting design components.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Hayder Abbas Obaid, Tameem Mohammed Hashim, Ahmed Awad Matr Al-Abody, Mohammed Salah Nasr, Ghadeer Haider Abbas, Abdullah Musa Kadhim, Monower Sadique
Summary: The rapid reduction of energy resources and the increased effects of global warming have led to a search for new techniques in paving construction. Adopting technologies like warm-mix asphalt (WMA) or asphalt recycling can have significant economic benefits and reduce environmental impact. This research focuses on studying the mechanical and durable properties of modified WMA mixtures using different additives and percentages of reclaimed asphalt pavement (RAP). The results show that these additives can greatly improve the mechanical and durable properties of WMA mixtures, promoting waste recycling in the paving industry.
Article
Construction & Building Technology
Farah Zaremotekhases, Husam Sadek, Marwa Hassan, Charles Berryman
Summary: This study examined the mechanical performance of asphalt mixtures containing RAP using various WMA technologies, concluding that WMA mixtures with 35% RAP exhibit enhanced resistance against permanent deformations and improved cracking performance. The incorporation of higher percentages of RAP and WMA technologies contributed to better cracking resistance and fatigue life of the WMA-RAP mixtures.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Afshar Yousefi, Ali Behnood, Ata Nowruzi, Hamzeh Haghshenas
Summary: Global warming and reduced energy resources are driving the search for alternative materials and technologies for pavement construction. This research focused on investigating the mechanical and durability performance of WMA mixtures containing reclaimed asphalt pavement (RAP) with different types of additives. Results showed that the performance of the mixtures varied depending on the WMA additive, with PAWMA (R) decreasing resistance to moisture damage. Despite decreasing flexibility and cracking resistance, incorporating RAP material led to improved resistance to rutting. Mixtures containing RAP and Kaowax (R) had the highest flow number value, while those with Zeolite (R) had the lowest. Furthermore, mixtures containing RAP and PAWMA (R) showed the highest resistance to moisture damage and best resilient modulus and cracking resistance among all mixtures studied.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
A. R. Pasandin, E. Nardi, N. Perez-Barge, E. Toraldo
Summary: The possibility of using a lignin-rich industrial byproduct as a partial substitute for asphalt emulsions in road pavements was analyzed in order to promote a circular economy and sustainable development. After conducting various tests, it was concluded that the optimal substitution percentage is 5%, resulting in an enhanced mixture with improved water resistance, resistance to permanent deformation, indirect tensile strength, and stiffness compared to the control mixture.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Xiangdao Hou, Chamod Hettiarachchi, Feipeng Xiao, Zifeng Zhao, Qian Xiang, Dara Yong
Summary: The application of reclaimed asphalt pavement (RAP) materials has become an important topic in sustainable road construction. Low carbon asphalt technology, such as warm mix technology, is utilized to reduce energy consumption and emissions in RAP application. Factors like blending time, temperature, and RAP content influence the blending efficiency of recycled asphalt mixtures.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Construction & Building Technology
Sukanta Karati, Sandip Karmakar, Tapas Kumar Roy
Summary: This paper reports the moisture damage analyses of recycled asphalt pavement aggregate-enriched bituminous concrete. The results show that a 50% RAP aggregate-enriched BC mix can be used in low-volume roads in colder regions with improved resistance to moisture damage.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Construction & Building Technology
Hassan Ziari, Mojtaba Hajiloo
Summary: The balanced mix design (BMD) is an alternative method to determine the Optimum Binder Content (OBC) of asphalt mixtures that considers both volumetric and performance properties. Using this method for designing asphalt mixtures with high reclaimed asphalt pavement (RAP) materials needs further investigation. The study found that the Superpave Mix Design (SMD) method may not be suitable for designing mixtures containing high-RAP materials with and without recycling agents (RAs), and these mixtures should be designed using the BMD method. Additionally, the aromatic extract RA had the most influence on rutting performance and mixtures treated with this RA showed the best cracking resistance.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Chemistry, Physical
Nicola Fiore, Salvatore Bruno, Giulia Del Serrone, Franco Iacobini, Gabriella Giorgi, Alessandro Rinaldi, Laura Moretti, Gian Marco Duranti, Paolo Peluso, Lorenzo Vita, Antonio D'Andrea
Summary: This study investigated the use of reclaimed asphalt pavement (RAP) and a rejuvenator additive to improve the mechanical properties of hot mix asphalt (HMA) mixtures for railway sub-ballast layer. The results showed that adding RAP and the additive increased the mechanical performances, reduced production costs, and decreased environmental impacts.
Article
Construction & Building Technology
Ramesh Adepu, V. Venkat Ramayya, A. Mamatha, V. Vinayaka Ram
Summary: This research investigates the recommended grade II Bituminous Concrete mixture and explores the effects of adding warm mix additive, RAP-derived aggregates, and basalt fibers. The study includes tests on the binder, micro structure analysis, and various performance tests to assess rut resistance, fracture behavior, and fatigue resistance. The results show that an AC mixture with 30% RAP materials, 6% chopped basalt fibers, and 4% Sasobit warm mix additive meets the target performance standards.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Ning Li, Wei Tang, Xin Yu, He Zhan, Xin Wang, Zhongyuan Wang
Summary: This study investigates the mobilization stage of reclaimed asphalt pavement (RAP) binder and the diffusion stage of virgin binder in the blending process between RAP and virgin binder. A blending chart relating RAP binder content to carboxyl index (CI) of blended binder was established using Fourier transform infrared spectrometer (FTIR). The diffusion of virgin binder was studied using the tracing method. The results showed that the proposed indicators can comprehensively evaluate the blending efficiency between RAP binder and virgin binder.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Mukul Rathore, Viktors Haritonovs, Martins Zaumanis
Summary: The study found that by adding a chemical additive, WMA mixtures can reduce mixing temperature compared to HMA, and virgin WMA mixtures show better crack resistance but lower rutting resistance than HMA. Additionally, using RA material without modification deteriorates the performance of WMA mixtures, and laboratory short-term aging significantly affects mixture performance.
Article
Construction & Building Technology
Xingyu Yi, Huimin Chen, Houzhi Wang, Chenguang Shi, Jun Yang
Summary: The study explored the feasibility of using epoxy asphalt for recycling mixtures containing 100% RAP, with the recycled mixture showing better rutting resistance but inferior fatigue performance compared to virgin epoxy asphalt. The low temperature cracking resistance and moisture susceptibility of the recycled mixture were similar to the virgin mixture.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Gurunath Guduru, Kranthi K. Kuna
Summary: This study proposes a framework to establish allowable limits for RAP content in HMA based on indicative tests on the RAP material. The framework can be adopted by road agencies to develop limits for different mix types. The study uses fragmentation and cohesion tests to classify RAP and proposes allowable limits based on the performance characteristics of Bituminous Concrete with varying amounts of RAP. The results validate the classification approach.
MATERIALS AND STRUCTURES
(2023)
Article
Green & Sustainable Science & Technology
Ahmed Eltwati, Ramadhansyah Putra Jaya, Azman Mohamed, Euniza Jusli, Zaid Al-Saffar, Mohd Rosli Hainin, Mahmoud Enieb
Summary: The study evaluated the effect of a warm mix asphalt antistripping agent, nano-ZycoTherm, on the rutting potential and moisture-induced damage of asphalt mixtures containing aged binder and rejuvenated with waste engine oil. The results showed that the ZycoTherm-modified WEO-rejuvenated mixtures exhibited better rutting resistance in wet conditions but poorer performance in dry conditions.
Article
Construction & Building Technology
Talita de Freitas Alves, Paulo Andre Moraes Pereira, Rosangela Motta, Kamilla Vasconcelos, Jamilla Lutif Teixeira, Liedi Bernucci
Summary: This paper investigates the mechanical response of railway tracks using bituminous subballast (BS) through numerical modeling. The results show that the use of BS reduces displacements on foot-of-rail and stresses on the subgrade, and different air voids content in bituminous mixtures has a negligible effect on the overall track response.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Construction & Building Technology
M. F. Oliveira, I. S. Bessa, R. R. Vasconcelos, K. L. Vasconcelos, L. L. B. Bernucci
Summary: This paper discusses the importance of pavement structures and factors affecting them, proposes a new laboratory compaction method, and evaluates its effectiveness. The results show that the compaction method significantly affects the performance of the mixture, with discontinuities in aggregate gradation leading to negative impacts.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Chemistry, Physical
Ao Huang, Gang Liu, Virginie Mouillet, Saannibe Ciryle Some, Tingwei Cao, Haoliang Huang
Summary: This study compared the long-term ageing kinetics of hot mix asphalt (HMA) and warm mix asphalt (WMA) produced with the same base bitumen. It found that the warm agent and foaming water significantly decreased the viscosity of the binder at high temperatures, improving the ageing resistance of the WMA. However, a higher content of foaming water deteriorated the viscosity, suggesting a lower content of warm agent and foaming water is recommended for foamed WMA preparation.
Article
Engineering, Civil
Laura Nascimento Mazzoni, Linda Lee Ho, Kamilla Lima Vasconcelos, Liedi L. B. Bernucci
Summary: This study proposes a new method for modeling the durability of pavement markings, involving accelerated experiments, fitting models, and Monte Carlo simulations. The model indicates the average rate of retroreflectivity decrease and how materials differ from each other, providing relevant information for maintenance planning.
TRANSPORTATION RESEARCH RECORD
(2022)
Article
Construction & Building Technology
Saannibe Ciryle Some, Jean-Francois Barthelemy, Virginie Mouillet, Ferhat Hammoum, Gang Liu
Summary: This study investigates the multiscale modeling of the complex modulus and phase angle of aged hot and warm mix asphalt and bituminous mortar. The results show that the stiffness moduli of binders and mixes increase with the long-term thermo-oxidative ageing duration, with a more pronounced increase for WMA. A multi-scale model combining Mori-Tanaka scheme and self-consistent scheme is implemented to predict the evolution of the stiffness moduli and phase angles of the mixes.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Civil
Gustavo Pinheiro, Kamilla Vasconcelos, Liedi Bernucci
Summary: The use of reclaimed asphalt pavement (RAP) is an advantageous alternative for road construction, but the inherent variability of RAP, particularly in the asphalt binder, is a concern. Methods for recovering the aged binder may change its properties, leading to flaws in the recycling agent dose.
TRANSPORTATION RESEARCH RECORD
(2022)
Article
Construction & Building Technology
Patricia B. B. Silva, Sergio C. Angulo, Rosangela Motta, Liedi L. B. Bernucci
Summary: Cement addition and pozzolanic reaction in recycled aggregates from construction and demolition waste can chemically stabilize pavement base layers. This study established a mix of recycled cementitious and red ceramic-waste aggregates with hydrated lime to enhance pozzolanic reactivity and achieve better mechanical properties compared to portland cement or recycled concrete aggregate itself. Chemical, physical, and mechanical tests were conducted, demonstrating that the pozzolanic reaction of cementitious and red ceramic aggregates with hydrated lime achieved mechanical properties closer to those achieved by a portland cement stabilized pavement base.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Chemistry, Analytical
Ebrahim Riahi, Wiyao Edjeou, Sebastien Buisson, Manuela Gennesseaux, Minh-Tan Do
Summary: This paper presents an experimental study on using accelerometers to estimate water depths on road surfaces indirectly. The study utilizes the vibration of the vehicle's wheel arch caused by water droplets projected by a tire on a wet road. The results show a strong correlation between the mean amplitude of accelerometric signals and actual water depths, and the effects of vehicle speed and road surface texture are discussed.
Article
Chemistry, Analytical
Xavier Dauptain, Aboubakar Kone, Damien Grolleau, Veronique Cerezo, Manuela Gennesseaux, Minh-Tan Do
Summary: This paper presents a high level, compact, scalable, and long autonomy perception and localization system for autonomous driving applications. The system consists of a high resolution lidar, a stereo global shutter camera, an inertial navigation system, a time server, and an embedded computer. It incorporates two perception algorithms (RBNN detection, DCNN detection) and one localization algorithm (lidar-based localization) to provide real-time advanced information such as object detection and localization in challenging environments. A dataset of 10,000 annotated lidar frames is used to train and evaluate the algorithms. The performance of the algorithms is competitive with the state-of-the-art and their processing time is compatible with real-time autonomous driving applications. By offering accurate advanced outputs, this system aims to simplify the work of researchers and engineers in planning and control modules, contributing to the democratization of access to autonomous vehicle research platforms.
Article
Energy & Fuels
Faycal Lahjiri, Virginie Mouillet, Anne Dony, Layella Ziyani, Sabine Gazeau, Freideric Delfosse, Michael Sztucki, Philippe Dieudonne-George, Francois Henn
Summary: An oxidative aging treatment was conducted on fresh 10/20 and 35/50 bitumens in the laboratory to simulate long-term aging on road pavements. The aging treatment resulted in the oxidation of less polar aromatic species into more polar content, as confirmed by FTIR, SAR-AD, and SAXS techniques. The size of nanoaggregates and primary clusters increased, leading to changes in the macroscopic rheological properties of the aged bitumens.
Article
Construction & Building Technology
Maria Jose Castro-Alonso, Leidy V. V. Espinosa, Paulo Ricardo Franco Marcelino, Kamilla Vasconcelos Savasini, Julio Cesar Dos Santos, Raquel Moraes, Silvio Silverio da Silva, Liedi L. B. Bernucci
Summary: This study characterized two bio-binders (Bio A and Bio B) derived from pine wood resins and designed for full replacement of asphalt binder. Various analytical techniques were used to evaluate the studied materials, including elemental analysis, FTIR, GC-MS, TGA, and rheological testing. The susceptibility to aging was assessed by comparing unaged and short-term aged samples of the binders. Bio A exhibited a penetratio grade of 29 (0.1 mm) and a softening point of 55.2 degrees C, while Bio B had a penetration grade of 21 (0.1 mm) and a softening point of 57 degrees C. AC 30/45 showed a penetration grade of 30 (0.1 mm) and a softening point of 55 degrees C. Bio B was found to be more prone to aging, potentially due to the higher content of saturated fatty acid methyl esters.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Construction & Building Technology
Leidy V. Espinosa, Kamilla Vasconcelos, Allex E. Alvarez, Amit Bhasin, Liedi Bernucci
Summary: Limited research has been conducted on the characteristics and performance of paving mixtures made with 100% bio-binders. This paper evaluates the moisture damage susceptibility of wood-based bio-binder-aggregate interfaces and compares it to neat and highly modified asphalt binders. The results indicate that the bio-binder has similar or higher moisture damage resistance compared to traditional asphalt binders.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Engineering, Civil
Ana Luisa Aranha, Liedi Legi Bariani Bernucci, Kamilla L. Vasconcelos
Summary: Data preprocessing, hyperparameter selection, and time series size significantly affect the performance metrics of machine learning algorithms in behavior prediction in the field of engineering. This study analyzes the performance of three ML algorithms (support vector machine, random forest, and artificial neural network) on predicting maximum deflection and international roughness index, finding that artificial neural network is the most accurate technique.
TRANSPORTATION RESEARCH RECORD
(2023)
Article
Engineering, Civil
Leidy V. Espinosa, Julia A. Rodrigues, Kamilla Vasconcelos, Liedi Bernucci, Simon Pouget
Summary: The use of bio-oils and biobinders in recycled asphalt mixtures has attracted attention due to their ability to incorporate more recycled material while reducing new asphalt binder consumption. Concerns about the overall performance of the recycled mixture have prompted investigations to optimize the restoration of aged binder properties. This study verifies blending charts based on high performance grade (HPG) temperature and shows that a commercial plant-based binder can effectively restore and improve the properties of aged asphalt binders.
TRANSPORTATION RESEARCH RECORD
(2023)
Article
Multidisciplinary Sciences
Zila Maria Garcia Mascarenhas, Igor Amorim Beja, Kamilla Lima Vasconcelos, Liedi Legi Bariani Bernucci
Summary: Heavy traffic and high temperatures can cause rutting in paved areas, but this can be reduced by using large-stone asphalt mixtures (LSAMs) as intermediate layers. LSAM is asphalt concrete with a nominal maximum aggregate size of at least 25 mm. Three LSAMs were designed using different compaction methods and varying compaction energy. The parameters evaluated, such as asphalt content and locking point, are important in LSAM design.
ACTA SCIENTIARUM-TECHNOLOGY
(2023)
