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Predictive modelling of volumetric and Marshall properties of asphalt mixtures modified with waste tire-derived char:A statistical neural network approach

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Journal of Road Engineering 2024年第3期4卷 318-333页

作者： Nura Shehu Aliyu Yaro Muslich Hartadi Sutanto Noor Zainab Habib Aliyu Usman Abiola Adebanjo Surajo Abubakar Wada Ahmad Hussaini Jagaba Department of Civil and Environmental Engineering Universiti Teknologi PETRONASSeri Iskandar 32610Malaysia Department of Civil Engineering Ahmadu Bello UniversityZaria 810107Nigeria Institute of Infrastructure and Environment Heriot-Watt UniversityDubai 294345United Arab Emirates School of Civil Engineering Central South UniversityChangsha 410075China Interdisciplinary Research Centre for Membranes and Water Security King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

The goals of this study are to assess the viability of waste tire-derived char(WTDC)as a sustainable,low-cost fine aggregate surrogate material for asphalt mixtures and to develop the statistically coupled neural network(SCNN)model for predicting volumetric and Marshall properties of asphalt mixtures modified with *** study is based on experimental data acquired from laboratory volumetric and Marshall properties testing on WTDCmodified asphalt mixtures(WTDC-MAM).The input variables comprised waste tire char content and asphalt binder *** output variables comprised mixture unit weight,total voids,voids filled with asphalt,Marshall stability,and *** coupled neural networks were utilized to predict the volumetric and Marshall properties of asphalt *** predictive modeling,the SCNN model is employed,incorporating a three-layer neural network and preprocessing techniques to enhance accuracy and *** optimal network architecture,using the collected dataset,was a 2:6:5 structure,and the neural network was trained with 60%of the data,whereas the other 20%was used for cross-validation and testing *** network employed a hyperbolic tangent(tanh)activation function and a feed-forward *** to the results,the network model could accurately predict the volumetric and Marshall *** predicted accuracy of SCNN was found to be as high value>98%and low prediction errors for both volumetric and Marshall *** study demonstrates WTDC's potential as a low-cost,sustainable aggregate *** SCNN-based predictive model proves its efficiency and versatility and promotes sustainable practices.

关键词： Waste tire Neural network Sustainable practices asphalt mixtures Predictive model

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Use of recycled concrete aggregates in asphalt mixtures for pavements:A review

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Journal of Traffic and Transportation Engineering(English Edition) 2022年第5期9卷 725-741页

作者： Juan Gabriel Bastidas-Martínez Fredy Alberto Reyes-Lizcano Hugo Alexander Rondón-Quintana Faculty of Engineering Universidad Piloto de ColombiaBogotáDC 110231Colombia Faculty of Engineering Pontificia Universidad JaverianaBogotáDC 110131Colombia Facultad del Medio Ambiente y Recursos Naturales Universidad Distrital Francisco Joséde CaldasBogotáDC 110131Colombia

Large quantities of natural aggregates(NA)are required in the manufacturing of asphalt mixtures for *** extraction of NA generates high environmental impacts that negatively affect environmental preservation and *** alternative materials obtained in construction and demolition processes in civil construction worked have been studies as possible replacements for NA,with the purpose of reducing these environmental *** foregoing study presents a state of knowledge review referring to the use of recycled concrete aggregates(RCA)when these are used in the manufacturing of asphalt mixtures(mainly hot-mix asphalt HMA type).Environmental aspects are presented,as well as possible benefits and limitations of using RCA as replacements for NA in asphalt ***,it is not possible to establish a behavior pattern,since the characteristics of the RCA are very heterogeneous and vary from the original source of the *** is highlighted from the literature that RCA has a wide potential for use in the manufacture of asphalt mixtures,since in most studies,the mixtures with these materials comply the quality requirements contemplated by the construction specifications,mainly in low-volume ***,based on the literature review,some recommendations and suggestions are presented for future research.

关键词： Recycled concrete aggregates asphalt mixtures Mechanical properties Volumetric composition

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Effects of diluted methanol and water as foaming agents on the performance of latex foamed warm asphalt mixtures

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Journal of Traffic and Transportation Engineering(English Edition) 2023年第3期10卷 413-426页

作者： Mohd Rosli Mohd Hasan Tai Guo Hainian Wang Sharvin Poovaneshvaran Ashiru Sani Muhammad Khuzaimi Aziz Seyed Reza Omranian School of Civil Engineering Universiti Sains Malaysia(Engineering Campus)Nibong Tebal 14300Pulau PinangMalaysia School of Highway Chang'an UniversityXi'an 710064China Department of Civil Engineering Kano University of Science and TechnologyKano 3244Nigeria Faculty of Applied Engineering EMIB Research GroupUniversity of AntwerpAntwerp 2020Belgium

Latex as an asphalt modifier has gained popularity in the asphalt industry as it improves the durability of asphalt ***,the elastomeric properties of latex stiffen the asphalt binders,resulting in additional energy consumption during the production of asphalt mixtures,which may cause a higher emission of greenhouse *** is undesirable for sustainable development and the *** this study,the applicability of diluted methanol and water was comparatively evaluated as foaming agents in the production of warm mix asphalt(WMA)mixtures incorporating *** methanol was used because it has a lower boiling point and latent heat than water,allowing the asphalt mixture to be produced at a lower temperature and thus consuming less *** performance of the foamed asphalt mixture was investigated through service characteristics,mechanical performance,and moisture susceptibility of *** service characteristics,on the other hand,were measured in a laboratory while preparing and compacting the asphalt mixture,which refers to the amount of energy required during the production and construction stages in the asphalt plant and on the construction site,*** degree of energy required was assessed based on the workability index,coatability index,and the compaction energy *** mechanical performance of asphalt mixtures was characterized by indirect tensile strength,resilient modulus,and dynamic creep *** resistance to moisture damage was evaluated based on the common parameter,indirect tensile strength *** findings revealed that the use of diluted methanol foaming agent helped improve the workability of latex modified asphalt *** foamed latex-modified WMA demonstrated better performance compared to asphalt mixtures prepared using water as the foaming agent.

关键词： asphalt mixtures Foaming technology Natural resources Low emission Elastomer Lower energy consumption

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Effect of Loading Condition and Temperature on Dynamic Properties of asphalt mixtures

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Journal of Wuhan University of Technology(Materials Science) 2013年第2期28卷 309-313页

作者：张光海 ZHENG Yuanxun KANG Haigui The State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology School of Hydraulic and Environment Zhengzhou University

In order to study the effects of loading condition and temperature on the dynamic properties of asphalt mixtures, the dynamic loading tests on different loading condition （various speeds and loads under a certain roughness） and temperature conditions were performed. The experimental result show that the dynamic properties of asphalt mixtures are influenced by vehicle load and speed, besides, the effects of temperature on dynamic properties of asphalt mixture are significant.

关键词： asphalt mixtures roughness dynamic properties temperature-sensitivity experiment research

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Effects of Temperature on the Dynamic Properties of asphalt mixtures

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Journal of Wuhan University of Technology(Materials Science) 2010年第3期25卷 534-537页

作者：郑元勋 The State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology School of Hydraulic and Environment Zhengzhou University

By using the falling weight deflectometer（FWD）,the dynamic loading tests on different thickness of asphalt mixture pavement in different temperature were *** experimental results show that the effects of temperature on dynamic properties of asphalt mixture are significant,and the thickness of asphalt mixture is also another important influence *** comparisons indicate that effect of temperature on the behaviors of dynamic loading properties and static loading properties of asphalt mixture were quite different.

关键词： asphalt mixtures temperature correction dynamic properties falling weight deflectometer(FWD)

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Evaluation of fatigue property of asphalt mixtures based on digital image correlation method

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Journal of Southeast University(English Edition) 2017年第2期33卷 216-223页

作者：蒋继望倪富健东南大学交通学院南京210096

In order to evaluate the accumulative of tensile strain in the process of fatigue failure, the digital image correlation（DIC） method was utilized to characterize the tensile strain development of asphalt mixtures in the indirect tensile（IDT）fatigue test. Three typical hot mix asphalt（HMA） mixtures with varying nominal maximum aggregate sizes were tested at four stress levels. During the tests, a digital camera was mounted to capture the displacement/strain fields on the surface of the specimen by recording the real-time change of speckle position. The results indicate that the vertical deformation curve can barely evaluate the fatigue performance accurately due to the non-negligible local deflection near the loading point. However, based on the analysis of strain fields,the optimal fatigue cracking zone is determined as a 40mm×40mm rectangle in the middle of the specimens. Also, a reasonable fatigue model based on the tensile strain curves calculated by DIC is proposed to predict the fatigue lives of asphalt mixtures.

关键词： asphalt mixtures fatigue behavior digital image correlation indirect tensile fatigue test

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A fatigue damage model for asphalt mixtures under controlled-stress and controlled-strain modes

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Journal of Southeast University(English Edition) 2019年第1期35卷 89-96页

作者： Cai Xing Yang Jun School of Transportation Southeast UniversityNanjing 210096China

A fatigue damage model based on thermodynamics was deduced for asphalt mixtures under controlled-stress and controlled-strain modes. By employing modulus of resilience as the damage hardening variable, a damage variable related with dynamic modulus was extracted as the evaluation index. Then, the damage evolution law under two control modes was proposed, and it has a similar form to the Chaboche fatigue model with a nonnegative material parameter m related to its loading level. Experimental data of four loading levels were employed to calibrate the model and identify the parameter in both control modes. It is found that the parameter m shows an exponential relationship with its loading level. Besides, the difference of damage evolution under two control modes was explained by the law. The damage evolves from fast to slow under a controlled-strain mode. However, under a controlled-stress mode, the evolution rate is just the opposite. By using the damage equivalence principle to calculate the equivalent cycle numbers, the deduced model also interprets the difference of damage evolution under two control modes on the condition of multilevel loading. Under a controlled-strain mode, a loading sequence from a low level to a high level accelerates damage evolution. An inverse order under the controlled-stress mode can prolong fatigue life.

关键词： asphalt mixtures fatigue model control mode continuum damage mechanics dynamic modulus

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Parameter Characterisation of asphalt mixtures for Visco-Elastoplastic Analysis

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Journal of Southwest Jiaotong University(English Edition) 2002年第1期10卷 45-56页

作者：陆阳廖敬梅廖军 School of Civil Engineering Southwest Jiaotong University Chengdu 610031 China

asphalt mixtures exhibit strong viscous properties under repetitive loads. This phenomenon can be simulated in creep and recovery tests. By applying the visco elastoplastic model proposed, data recorded in the tests are interpreted. It is emphasised that applicability of the visco elastoplastic model depends on the proper method of characterising parameters involved in the constitutive equations. Since two or more strain components of elasticity and viscosity coexist during the loading or unloading, a measuring system of two loggers is introduced to decouple these components. Test data are analysed in three steps as elastic, visco elastic and visco plastic evaluations, using the records collected at the moment of unloading, during the periods of recovery and creep respectively. Factors that may influence the accuracy of data analysis are also discussed.

关键词： visco elastoplastic asphalt mixtures creep and recovery tests parameter evaluation.

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Shear resistance properties of TPS modified bitumen binders and asphalt mixtures

Shear resistance properties of TPS modified bitumen binders ...

引用

The 9th National Conference on Rheology

作者：曹庭维吴少鹏刘聪慧张涛 Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education Wuhan University of Technology

＜正＞Shear resistance properties of the virgin bitumen and modified bitumen binders with Tafpack Super （TPS） modifier and SBS modified bitumeh were *** shear rheometer （DSR） was used to measure the laboratory creep data for these binders over a wide range of constant shear stresses at 20℃ to characterize the shear creep behaviors of all kinds of asphalt binders, and the rutting test system was used to investigate the permanent deformation of porous asphalt mixtures using the above bitumen binders for a fixed compressive *** shear strain rate and shear creep modulus were used to characterize the shear creep behavior of the TPS modified bitumen,and the rutting test results were used to show the consistency of porous asphalt mixtures with the bitumen *** indicate that a distinction of shear creep strain can be made among different contents of TPS modified bitumen at the same stress level,where the shear creep strain—time response curve of the SBS modified bitumen binder is between the curves of the 8% TPS and 12% TPS modified bitumen *** shear strain rate and the shear creep modulus of the TPS modified bitumen binders are obtained to compare with those of the SBS modified bitumen binder which results in the same trend as the shear creep strain-time response *** deformation results of all the porous asphalt mixtures from the rutting test show reasonable agreement with the findings of the shear strain rates and shear creep modulus over the range of shear stress levels.

关键词： TPS modifier bitumen binders asphalt mixtures shear resistance properties

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Effect of aggregate gradation on low temperature performance of asphalt paving mixtures

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Journal of Harbin Institute of Technology(New Series) 2011年第1期18卷 11-17页

作者：谭忆秋徐慧宁石昆磊吴建涛 School of Traffic Science and Engineering Harbin Institute of Technology Shanghai Municipal Engineering Design General Institute

Low temperature cracking has become one of the important factors that diminish asphalt pavement's ride quality and service *** in cold region,cracking caused by low temperature is the main distress *** paper discussed the effect of aggregate gradation on the low temperature performance in asphalt paving mixtures.A total of 11 asphalt mixtures with 11 different aggregate gradations and one asphalt binder content were *** properties of the coarse aggregate and asphalt mixtures showed aggregate grading has a significant impact on the degree of aggregate interlock in asphalt mixtures.A trend is existed in the low temperature performance with the change of *** the aid of mathematic statistics,it indicates gradation affects the low temperature performance *** findings also indicate the relationship between the degree of aggregate interlock in asphalt mixtures and the low temperature performance:With the stone-to-stone contact developed,the mixture has a high energy to resist contract and deformation at low *** properties of fine aggregate and asphalt play an important part in resisting low temperature cracking in floating *** it provides lower energy to resist low temperature cracking compared to the skeleton structure.

关键词： asphalt mixtures aggregate gradation low temperature performance the degree of aggregate interlock rank sum test

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