Article
Construction & Building Technology
Lan He, Jinfeng Wang, Xi Wu, Guannan Wang, Yutong Wang, Haowei Chu
Summary: The interface between the prefabricated track plate and self-compacting concrete in a ballastless track is prone to damage and failure due to long-term environmental and train load effects. A fatigue cohesive zone model is proposed to analyze the fatigue bonding performances of the interface. Static and fatigue tests are conducted on composite specimens, and full-field strain distribution images are obtained. The results provide insight into the fatigue behavior and degradation of the interface in the ballastless track system.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Kui Sun, Xingzhong Nong, Qingsong Feng, Hua-peng Chen, Jun-hua Xiao
Summary: The stiffness, mass and damping matrix of the vehicle model with 17 degrees of freedom are determined using the Lagrange equation. The bonding performance of the interface between the track slab and the CA mortar layer is simulated using the bilinear discrete cohesive zone model (DCZM). A new model is proposed to study the behavior of a ballastless track on a simply supported bridge, considering the damage at the interface. The effects of bridge temperature and the longitudinal stiffness on the displacement of the ballastless track-bridge structure are investigated. The results provide valuable insights for the maintenance standards of the interface in ballastless tracks on simply supported bridges.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Zhao-Hui Lu, Jun Wang, Zhuo Tang, Yan-Gang Zhao, Wengui Li
Summary: This study proposed a new cohesive zone model (CZM) that can accurately describe the nonlinear behavior of the interface in ballastless track structures by introducing exponential coefficients. The proposed model exhibits higher accuracy in predicting the cracking behaviors of the interlayer interface compared to existing models, with coefficients of determination (R-2) all above 0.85. This model can be used for analyzing the interface behaviors of ballastless track structures.
Article
Metallurgy & Metallurgical Engineering
Juan-juan Ren, Kai-yao Zhang, Xue-shan Xu, Yuan-jie Xiao, Wen-long Ye, Shi-jie Deng, Jin-cheng Tian
Summary: A fatigue damage analytical method for SCC filling layer in CRTS III ballastless track was established using the technology of fully coupled damage and finite elements. The study investigated the effects of train load change, initial deterioration, and slab end debonding on the performance evolution of the filling layer. The fully-coupled method revealed the interaction between fatigue damage and the structure's stress field. It was found that slab end debonding had a more prominent effect on damage accumulation compared to initial deterioration and train load change.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Engineering, Civil
Miao Su, Huan Xie, Chongjie Kang, Shaofan Li
Summary: This study investigated the interfacial normal bond capacity of LCST using a VPT and developed an ANN-based approach to map the relationship between the structural response and interfacial properties. The results showed close agreement between the predictions given by the ANNs and the ground truth values, demonstrating the accuracy and reliability of the proposed parameter determination method. The hybrid approach combining experimental and FE analysis with ML methods proved to be a promising alternative for identifying material properties in structural engineering.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Hailou Jiang, Jiwen Zhang, Tao Li, Yi Wang, Yilun Liu, Hans De Backer
Summary: This study proposed using magnesium phosphate cement (MPC) to repair the base slab of the Chinese ballastless railway track. The laminated members were subjected to static and fatigue bending tests, and the results showed that the damage was primarily caused by bending and shear at the interface. Fatigue test results indicated that the stress level on the base slab was below the endurance limit, and microscopic tests revealed the crucial role of the bond between Portland cement and MPC in the repair process.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Mathematics
Haoran Xie, Lingyan Xu, Bin Yan
Summary: This study establishes a finite element model of the ballastless track considering the limit convex abutment, gel resin, and interlayer bonding, and investigates the mechanical characteristics of the track under different conditions. The results show that the track slab experiences tension and structural separation under negative temperature gradient load. Inadequate bonding at the interface between the track slab-CAM layer can be improved by increasing the structural stiffness of the CAM layer. Freeze-thaw cycles lead to material deterioration, increased separation between track structures, and baseplate degradation.
Article
Engineering, Civil
Jun Wang, Zhao-Hui Lu, Xuan-Yi Zhang, Yan-Gang Zhao
Summary: This study aims to reveal the interface damage mechanism between the track slab and the cement asphalt (CA) mortar layer of CRTS II slab ballastless track, under different combinations of temperature actions and initial gap damage. The influence of overall temperature and temperature gradient on interface damage was analyzed. The results showed that overall temperature has a more obvious effect on interface damage, and when the overall temperature drops, the decrease of interface damage is lower.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
(2023)
Article
Construction & Building Technology
Tao Shi, Ping Lou
Summary: As ballastless track is exposed to different geographical and meteorological conditions, the impact of temperature changes on its performance must be considered. However, accurately predicting the vertical temperature gradient (VTG) on ballastless track in thermal environments has been challenging. This study develops four machine learning approaches to identify the ballastless track's VTG evolution and proposes a stacking-based hybrid framework to further improve the accuracy of prediction. The results show that the XGBOOST-based method has the best accuracy among the four selected machine learning approaches.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Zhiping Zeng, Mengxuan Ye, Weidong Wang, Jing Liu, Shiwen Shen, Ayoub Abdullah Senan Qahtan
Summary: The study found that increasing the one-time deflection rectification range led to corresponding increases in the maximum rectification of the track slab, CA mortar, and support; increasing the absolute value of the deflection rectification temperature linearly increased the maximum rectification of the track slab, CA mortar, and support; increasing the pushing points distance from 2m to 3m resulted in reductions in the maximum rectification and tensile strain of the track slab and support.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Acoustics
Yu Liu, Qianqi Xu, Xiaodan Sun, Guotao Yang, Guotang Zhao
Summary: This paper uses finite element analysis to study the delamination between layers of the track structure caused by vertical impact during high-speed train operation. It is found that the area of delamination increases with the impact energy, while the area of interfacial damage in compression is related to tangential stiffness and the area of delamination is related to normal stiffness.
SHOCK AND VIBRATION
(2021)
Article
Engineering, Civil
Jingxiang Huang, Peng Liu, Zhiwu Yu, Xiang Cheng, Weiting Zhi, Sanling Zhang
Summary: This study investigates the long-term deformation of the CRTS III type ballastless track-girder system and analyzes the stress and damage. The numerical simulation results show that after four years of operation, the creep camber of the box girder reaches 3.41 mm, and the maximum tensile and compressive longitudinal stresses of the base plate reach 0.537 MPa and 11.983 MPa, respectively. Significant damage is observed in the mid-span of the box girder.
ENGINEERING STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Tae-Rim Kim, Hyo Yeong Ahn, Yun Hak Kim, Seog-Young Yoon, Chi-Seung Lee
Summary: This study investigated the nonlinear behavior of polyurethane foam (PUF) under various conditions. A elastoviscoplastic constitutive model was adopted and discretized using an implicit time integration algorithm in ABAQUS. Parameter determination method was used to identify material parameters, allowing for the prediction of PUF's macroscopic material response.
MECHANICS OF MATERIALS
(2021)
Article
Acoustics
Yu Liu, Qianqi Xu, Xiaodan Sun, Guotao Yang, Guotang Zhao
Summary: The study introduces a linear proportional distribution method to describe the force-displacement variation of CRTS II SBTS in different damage stages of the horizontal push plate test. The simulation shows that the maximum affected length in the undamaged stage and the maximum damaged length in the damage stage depend more on the interfacial stiffness and material parameters of SBTS, rather than the horizontal load.
SHOCK AND VIBRATION
(2021)
Article
Construction & Building Technology
Daobin Yan, Yude Xu, Wenjun Zhu
Summary: The effects of debonding repairment on interfacial damage and thermal deformation of CRTS II slab ballastless track are evaluated in this study. An improved mixed-mode bilinear cohesive zone model is utilized to provide more accurate prediction of the interfacial damage. A finite element model of CRTS II slab ballastless track, considering debonding repairment, is developed to simulate the interfacial damage and structural deformation under field-measured temperature gradient loads. The results indicate that debonding repairment restores the thermal deformation resistance of CRTS II slab ballastless track, but this capacity gradually decreases with the accumulation of interfacial damage. Re-debonding in the upper interlayer may lead to the emergence of an opposite-sided debonding in the lower interlayer. Furthermore, implementing debonding repairment with rebar implantation significantly reduces the re-debonding height.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Mechanical
Mei Chen, Wanming Zhai, Shengyang Zhu, Lei Xu, Yu Sun
Summary: This study presents a vibration-based method for detecting fastener damage by introducing the fully convolutional network (FCN), which can accurately, real-time and robustly identify invisible damages of fasteners.
VEHICLE SYSTEM DYNAMICS
(2022)
Article
Engineering, Civil
Penghao Li, Zhonglong Li, Zhaoling Han, Shengyang Zhu, Wanming Zhai, Huibin Lou
Summary: A dynamic interaction model considering the impact of floating ice on train-track-bridge (TTB) system has been established. It shows that the angle of the pier sharp-nose (APSN) and lateral stiffness of foundations are key parameters influencing the dynamic responses of the bridge structure under ice impact loads. The study also reveals the significant influence of ice impact loads on the dynamic responses of the train, potentially leading to derailment at speeds exceeding 400 km/h.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
(2022)
Article
Engineering, Mechanical
Xuancheng Yuan, Shengyang Zhu, Wanming Zhai
Summary: An advanced vehicle-track coupled dynamics model with a detailed rail fastening clip model is developed, validated through numerical modal analysis and modal testing, allowing for efficient evaluation of dynamic performance of rail fastening systems subject to vehicle-track dynamic interactions. The model effectively considers the influences of rail corrugations, vehicle speeds, and rail pad stiffness on dynamic performances of the rail fastening system.
VEHICLE SYSTEM DYNAMICS
(2022)
Article
Transportation Science & Technology
Senrong Wang, Jun Luo, Shengyang Zhu, Zhaoling Han, Guotang Zhao
Summary: This paper presents a random dynamic analysis of a high-speed train moving over a long-span cable-stayed bridge. The study involves modal convergence study, the effect of train speeds on system dynamic responses, and stochastic analysis based on the probability density evolution method.
INTERNATIONAL JOURNAL OF RAIL TRANSPORTATION
(2022)
Article
Engineering, Mechanical
Jun Luo, Shengyang Zhu, Wanming Zhai
Summary: This paper presents exact closed-form solutions for free vibration of discretely supported Euler-Bernoulli and Timoshenko beams in the presence of an arbitrary number of intermediate elastic constraints. The accuracy of the solutions is validated by numerical results obtained from the finite element method and previous literature adopting different methods. The study is of significance to support optimization and dynamic analysis of discretely supported beam-like structures, providing a new method to efficiently determine critical stiffness leading to the maximum fundamental frequency.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Mechanical
Jun Luo, Shengyang Zhu, Wanming Zhai
Summary: This paper presents a semi-analytical solution for the free and forced vibrations of a pinned-pinned Euler-Bernoulli curved beam and extends it to train-track spatial interactions. Comparisons with published results and finite element method show the reliability and advancement of the approach, providing more accurate results for higher frequency analysis and better adaptability to different boundary conditions. The study also investigates the influence of radius and subtended angle on the natural frequencies of rails simulated by the straight and curved beam models, and extends the model to simulate curved rails in a train-track coupled dynamics system.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Mechanical
Zhandong Yuan, Jun Luo, Shengyang Zhu, Wanming Zhai
Summary: This paper presents a framework based on Wasserstein generative adversarial network for estimating track irregularities using axle box acceleration signal, combining supervised and adversarial learning for optimizing the network training process. This method has been successfully applied to dynamic simulations in railway systems.
VEHICLE SYSTEM DYNAMICS
(2022)
Article
Engineering, Mechanical
Jiawei Zhang, Shengyang Zhu, Chengbiao Cai, Mingze Wang, Hong Zhao
Summary: This study aims to investigate the damage evolution property of ballastless track under low-cycle fatigue load condition. A low-cycle fatigue cohesive model (LCFC) is established and validated through experimental testing and numerical simulations. The results show that the LCFC model is suitable for studying the interface fatigue damage of ballastless track under extreme temperature gradient cycles.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Civil
Zhaoling Han, Shengyang Zhu, Wanming Zhai, Bin Zhu
Summary: This study investigates the challenges of laying ballastless tracks on a long-span cable-stayed high-speed railway bridge. By establishing models and studying dynamic interaction behavior, the research finds that excellent dynamic performance of the train-track-bridge system can be achieved by setting an elastic cushion under the track bed.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
(2023)
Article
Engineering, Mechanical
Penghao Li, Shengyang Zhu, Wanming Zhai, Guangtian Shi, Zhenxing He, Miao Du
Summary: This study investigates the running safety of trains on the Sichuan-Tibet Railway bridges under floating ice impact loads. A train-track-bridge dynamics model is established and the effect of tuned mass damper (TMD) on train safety under extreme ice loads is analyzed. The results show that the fluid effect significantly influences ice impact loads on the bridge, reducing train speeds and improving safety with the use of TMD.
VEHICLE SYSTEM DYNAMICS
(2023)
Article
Engineering, Civil
Zhihao Zhai, Shengyang Zhu, Xuancheng Yuan, Zhenxing He, Chengbiao Cai
Summary: The nonlinear dynamic behavior of a new mesh-type rail pad in extremely cold environments, considering frequency and amplitude dependence, was investigated. The study proposed a nonlinear model for the rail pad and performed laboratory tests to determine the model parameters. The results show that the proposed model enables more accurate dynamic simulation of the vehicle-slab track system in extreme cold environments.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
(2023)
Article
Engineering, Mechanical
Yulong Bao, Wanming Zhai, Chengbiao Cai, Shengyang Zhu, Yongle Li
Summary: This paper investigates the influence of the combined center of gravity (CCOG) height on the dynamic behavior of a suspended monorail train under crosswinds. An improved wind-vehicle-bridge coupling dynamics model considering the CCOG height is proposed. The results show that the suspended monorail train has a certain self-balancing ability due to its unique structure type.
VEHICLE SYSTEM DYNAMICS
(2023)
Article
Engineering, Mechanical
Zhihao Zhai, Shengyang Zhu, Yun Yang, Jun Luo, Chengbiao Cai
Summary: In this study, a 3D train-slab track-high pier bridge coupled dynamics model was established and verified, considering the spatial flexibility of high piers. The results show that the operation speed has a significant impact on carbody acceleration and wheel-rail force.
VEHICLE SYSTEM DYNAMICS
(2023)
Article
Engineering, Geological
Shuai Qu, Lin Zhao, Jizhong Yang, Zaixin Wu, Shengyang Zhu, Wanming Zhai
Summary: This study investigates the impact of the underground section of the Chengdu-Zigong high-speed railway on vibration-sensitive equipment and explores the effectiveness of an engineered metabarrier in reducing ground vibration. The results show that horizontal vibrations cannot be ignored and the metabarrier can effectively attenuate ground vibration, with the attenuation rate stabilizing as the depth of the metabarrier increases.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Civil
Qinglie He, Yun Yang, Chengbiao Cai, Shengyang Zhu
Summary: This study investigates the influences of guideway geometry parameters and track irregularity on the dynamic performances of the suspended monorail vehicle-guideway system. By establishing a dynamic analysis model, the study reveals that reducing the guideway span can effectively improve dynamic performances and recommends a deflection-span ratio for the suspended monorail guideway. Furthermore, it suggests limiting bending deformation of piers to enhance vehicle riding comfort and discusses the impact of track irregularity on vehicle-guideway vibrations.
STRUCTURAL ENGINEERING AND MECHANICS
(2022)
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)