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Comparative study of ethanol foamed asphalt binders and mixtures prepared via manual injection and laboratory foaming device

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Journal of Traffic and Transportation Engineering(English Edition) 2019年第4期6卷 383-395页

作者： mohd rosli mohd hasan Zhanping You School of Civil Engineering Universiti Sains MalaysiaNibong Tebal 14300Pulau PinangMalaysia Department of Civil and Environmental Engineering Michigan Technological UniversityHoughtonMI 49931USA

The consistency of the ethanol foamed binders and mixtures prepared using asphalt binders foamed by the manual injection technique and laboratory foaming device were evaluated and compared in this study. The asphalt binders foamed using both methods was prepared at 120℃, 130℃ and 140℃. The performance of ethanol-foamed binders was evaluated in terms of rotational viscosity, expansion ratio, and low temperature ***, the performance of foamed WMA mixtures was tested using semi-circular bending(SCB), disk-shaped compact tension(DCT), and tensile strength ratio(TSR) tests. In order to conduct the TSR test, the samples were conditioned using the Moisture Induced Stress Tester(MIST) to simulate the pore pressure and scouring effects due to a tire passing over wet pavement. The foamed WMA mixtures were produced using pre-heated aggregates at 80℃ and 100℃ and foamed asphalt binders produced at 130℃. The nano-hydrated lime was used as the filler and anti-stripping agent. Overall, the properties of ethanol-foamed binders and WMA mixtures produced via both methods are significantly comparable, except the resistance to moisture damage test result. However, the findings indicate that the ethanol-foamed WMA mixtures prepared using both techniques are having good resistance to moisture damage, based on the TSR values more than 0.8. The foamed WMA mixtures also exhibited a better resistance to cracking, as indicated by a higher tensile strength compared to the control HMA. Additionally, the WMA specimen prepared at 100℃ was less susceptible to rutting than the samples produced at 80℃.

关键词： Warm mix asphalt Foaming technique Rheological Foam quality Mixture performance

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Preparation process of bio-oil and bio-asphalt,their performance,and the application of bio-asphalt:A comprehensive review

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Journal of Traffic and Transportation Engineering(English Edition) 2020年第2期7卷 137-151页

作者： Hainian Wang Ziye Ma Xi Chen mohd rosli mohd hasan School of Highway Chang'an UniversityXi'an 710064China School of Civil Engineering Universiti Sains MalaysiaNibong Tebal 14300Pulau PinangMalaysia

The objective of this paper is to establish the state of knowledge on fast pyrolysis of bio-oil and bio-asphalt binder and to facilitate efforts in improving the overall perform ance of bioasphalt and maximizing its road *** the basis of reviewing the relevant literature recently,the fast pyrolysis(FasP) preparation process of bio-oil and its main properties,the preparation process of bio-asphalt and its performance and the application of bio-asphalt have been *** to the variations in raw materials,the adopted methods of FasP to prepare bio-oil could be different,and the properties of bio-oil from different sources are also *** present,the plant-based bio-oil(mainly derived from wood waste and sawdust) has been widely used to prepare the *** on the low-temperature flexibility,high-temperature rheology,workability and other performance of biological asphalt showed that the workability and high-temperature performance of most asphalt are improved after adding ***,the low-temperature performance is found to relatively ***,with regards to its application as a rejuvenator,bio-oil can considerably rejuvenate the aged asphalt’s mixture *** far,most of research on bio-asphalt is still focused on the performance of bio-asphalt binder in the laboratory;its application in practical road engineering is still to be *** review also provides an outlook for the future,for example,establishing an integrated preparation process from bio-oil to bio-asphalt,and evaluating the properties of bioasphalt by new standards.

关键词： Road engineering Bio-oil Bio-asphalt Preparation process Performance Application of bio-asphalt

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Recent development,utilization,treatment and performance of solid wastes additives in asphaltic concrete worldwide:A review

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Journal of Traffic and Transportation Engineering(English Edition) 2022年第5期9卷 693-724页

作者： Tracy Leh Xin Wong mohd rosli mohd hasan Leo Choe Peng School of Civil Engineering Universiti Sains Malaysia14300 Nibong TebalPinangMalaysia School of Chemical Engineering Universiti Sains Malaysia14300 Nibong TebalPinangMalaysia

Asphalt modifications either involved commercial or recycled waste materials modifiers help optimise and improve the deficient properties of asphalt mixtures relative to current *** manuscript reviews the recycling of waste materials generated from various sources such as household,agricultural and industrial to minimise natural resources exploitation,lower energy demand,and enhance overall pavement *** actual development and implementation of recycled asphalt pavement in numerous countries in Asia,North America,South America,Europe and Africa are emphasised,and their influence on the performance of asphalt pavements is *** pavement showed satisfying performance for years as maintenance and restoration are not ***,solid wastes are required to undergo pre-requisite treatments via mechanical,biological stabilization,thermal or chemical methods before the implementation as asphalt modifiers to ease the handling *** damage issues have been spotted in the implementation of several types of solid wastes and consequently reduced the strength and durability of ***,potential hydrophobic treatment can be adopted to improve the quality of asphalt mixtures by modifying the hydrophilic characteristics that are contributed by the hydroxyl groups on the cellulose nanocrystals(CNCs)or providing a superhydrophobic coating onto the *** treatments greatly weakened the moisture sensitivity of modified materials by reducing their water absorption and increasing their water contact *** modified mixtures are necessary to have identical or enhanced pavement performance to the conventional ***,future researchers are encouraged to broaden the research field in pavement engineering by considering chemical treatments in improving material properties to achieve cost-saving,efficient waste management,and higher commercial *** implementing any virgin materials,waste material

关键词： Sustainable pavement Industrial waste Cleaner environment Resources preservation Hydrophobic treatments Mechanical performances

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Ethanol based foamed asphalt as potential alternative for low emission asphalt technology

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Journal of Traffic and Transportation Engineering(English Edition) 2016年第2期3卷 116-126页

作者： mohd rosli mohd hasan Zhanping You Department of Civil and Environmental Engineering Michigan Technological University School of Civil Engineering Universiti Sains Malaysia

Foamed asphalt typically relies on water as a foaming agent because water becomes gaseous at elevated temperatures, generating numerous tiny bubbles in the asphalt and causing spontaneous foaming. In this study, ethanol was used as a potential alternative to water as a foaming agent. Ethanol is expected to be a physical blowing agent in the same manner as water, except it requires less energy to foam due to its 78 ℃ boiling point. This study compares the performance of water and ethanol as foaming agents through the measurements of rotational viscosity, the reduction in temperature during foaming, and volatile loss. The ethanol-foamed asphalt binders were prepared at 80 ~C and 100 ~C, while the water-foamed asphalt binders were prepared at 100 ~C and 120 ~＇C. Additionally, the rolling thin film oven （RTFO） was used to generate short-term aging of the foamed asphalt binders. A rotational viscometer was used to determine the viscosity of the asphalt binders at 80 ~C, 100 ~C, 120 ~C, 140 ~C, and 160 ~C. Overall, ethanol can function in the same manner as water but requires less energy to foam. It is proven based on the smaller drop in temperature of the asphalt binder foamed using ethanol compared with that prepared with water. This is due to the lower latent heat capacity of ethanol, which requires less energy to vaporize compared with water. Through the rotational viscometer test, ethanol performs better in lowering the viscosity of asphalt binders, which is essential in allowing produc- tion processes at low temperatures, as well as a better workability and aggregate coating. Ethanol can be expelled from the foamed asphalt binders at a higher rate due to its lower boiling point and latent heat.

关键词： Warm mix asphalt Foaming agent Ethanol-based foaming Expulsion rate Aging factor

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Review of sustainability, pretreatment, and engineering considerations of asphalt modifiers from the industrial solid wastes

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Journal of Traffic and Transportation Engineering(English Edition) 2019年第3期6卷 209-244页

作者： mohd rosli mohd hasan J-Wei Chew Ali Jamshidi Xu Yang Meor Othman Hamzah School of Civil Engineering Universiti Sains Malaysia Nibong Tebal 14300 Pulau Pinang Malaysia School of Highway Chang'an University Xi'an 710064 China School of Science and Engineering University of Sunshine Coast Sippy Downs Queensland 4556 Australia Department of Civil Engineering Monash University Melbourne Victoria 3168 Australia

The escalating mass of solid waste at an overwhelming sum requires a global attention to strive for efficient waste management and to outsource the ecological treatments. The asphalt pavement industry that consumes a vast scale of natural resources while contributing to thermal and greenhouse emissions is viewed as a high potential alternative for the application of solid waste as asphalt modifier and substantial waste reduction. In efforts to urge for cleaner and greener asphalt production, a growing trend towards usage of solid waste as a renewable material is paving a sustainable future for the asphalt pavement industry. The economic options of incorporating solid waste into the asphaltic mixture coupled with proven effective performances are a green and cost-effective alternative to mitigate various pavement distresses. Various options either as coarse or fine aggregates and as fillers in powder, ash, or fibre form are to stimulate further research interest to incorporate a diversified range of solid waste into the asphalt binder and asphalt mixture. Prior to incorporating solid waste into the asphaltic mixture through the selected options, prerequisite tests in addressing engineering limitations due to the unknown properties of solid waste are reviewed. The concerns on environmental impact are given heavy metals leaching possibilities into water sources are addressed by Toxicity Characterization Leaching Procedure test, to leverage further the systematic reuse of solid waste in steering towards the cleaner production of the asphalt mixture. The microcosmic traits of solid waste namely surface morphology, mineralogical composition and chemical composition are summarized based on the usage of Scanning Electron Microscope, X-Ray Diffraction, and X-Ray Fluorescence, respectively. This systematic review is an enactment and stimulus for researchers to have a general overview before incorporating solid waste into asphalt mixture.

关键词： Asphalt modifier Waste materials Clean production Energy Carbon footprint Green pavement

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A hybrid strategy in selecting diverse combinations of innovative sustainable materials for asphalt pavements

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Journal of Traffic and Transportation Engineering(English Edition) 2016年第2期3卷 89-103页

作者： Baron Colbert mohd rosli mohd hasan Zhanping You Keweenaw Bay Ojibwa Community College BaragaMI 49908USA Department of Civil and Environmental Engineering Michigan Technological UniversityHoughtonM149931USA School of Civil Engineering Universiti Sains Malaysia14300 Nibong TebalPulau PinangMalaysia

This project integrates recent innovations of recycled materials used in designing and building sustainable pavements. An increasing environmental awareness and the demand for improving economic and construction efficiencies, through measures such as con- struction warrantees and goals to reduce air pollution under the Kyoto Protocol, have increased the efforts to implement sustainable materials in roadways. The objective of this research is to develop a systematic approach toward selecting optimum combinations of sustainable materials for the construction of asphalt pavements. The selected materials, warm mix asphalt （WMA）, recycled asphalt shingles {RAS）I and reclaimed asphalt pave- ment {RAP） were incorporated in this study. The results of this research are intended to serve as guidelines in the selection of the mixed sustainable materials for asphalt pave- ments. The approach developed from this project draws upon previous research efforts integrating graphical modeling with optimizing the amount of sustainable materials based on the performance. With regard to moisture susceptibility and rutting potential test re- suits, as well as the MIM analysis based on a 95% confidence interval, the rutting perfor- mance and moisture susceptibility of asphalt mixtures are not significantly different regardless of the percentages of RAS, RAP, or WMA. The optimum mixture choices could be made by the plant emission rankings with consideration of the optimal WMA types, per- centages of RAS/RAP, and WMA production temperatures. The WMA mixtures prepared with 75% RAP and Advera WMA have produced the lowest CO2 emissions among the investigated mixture types.

关键词： Pavement material Asphalt Sustainability Emission Graphical modeling

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Experimental assessments of methanol-based foaming agent in latex modified foamed binders and warm asphalt mixtures

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Journal of Road Engineering 2022年第1期2卷 84-97页

作者： mohd rosli mohd hasan Tai Guo Hainian Wang Zul Fahmi Mohamed Jaafar Zhanping You School of Civil Engineering Universiti Sains Malaysia(Engineering Campus)Nibong Tebal 14300Pulau PinangMalaysia School of Highway Chang'an UniversityXi'an 710064China Department of Civil and Environmental Engineering Michigan Technological UniversityHoughtonMI 49931USA

Latex is one of the natural rubbers that is used to enhance the performance of asphalt pavement for the last few *** presence of latex,which is categorized as an elastomer,helps to improve pavement performance and ***,higher viscosity of latex modified asphalt binder increases the production-temperatures of asphalt mixture,thus consuming higher energy during asphalt mixture’s production *** this study,the effectiveness of methanol as an energy-efficient foaming agent was assessed to reduce the viscosity and enhance the workability of the modified asphalt *** basic and rheological properties of the asphalt binders were determined through multiple laboratory tests including expansion ratio and half-life,rotational viscosity,softening point,torsional recovery,and dynamic shear *** properties of asphalt mixtures were assessed through the service characteristics,mechanical performance,and moisture resistance *** was found that the presence of latex results in an approximately twofold higher expansion ratio and a lower half-life of the asphalt binder at about the same *** the rotational viscosity test,the application of methanol into asphalt binder decreased the viscosity and led to better workability,despite the addition of latex as an asphalt *** application of methanol into asphalt binder improved the workability of mixture samples and lowered the compaction energy of the compaction process,which are the crucial criteria for a better mixing and compaction *** foamed asphalt mixtures with latex show much higher resistance to moisture damage and stiffness than control sample even though they were prepared at a lower temperature.

关键词： Foaming agent Foaming technique Latex Lower energy Methanol Natural rubber

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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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Research and applications of artificial neural network in pavement engineering:A state-of-the-art review

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Journal of Traffic and Transportation Engineering(English Edition) 2021年第6期8卷 1000-1021页

作者： Xu Yang Jinchao Guan Ling Ding Zhanping You Vincent C.S.Lee mohd rosli mohd hasan Xiaoyun Cheng School of Highway Chang'an UniversityXi'an 710064China School of Future Transportation Chang'an UniversityXi'an 710064China College of Transportation Engineering Chang'an UniversityXi'an 710064China Department of Civil and Environmental Engineering Michigan Technological UniversityHoughtonMI 49931USA Faculty of Information Technology Monash UniversityClaytonVIC 3800Australia School of Civil Engineering Universiti Sains MalaysiaNibong Tebal 14300Pulau PinangMalaysia

Given the great advancements in soft computing and data science,artificial neural network(ANN)has been explored and applied to handle complicated problems in the field of pavement *** study conducted a state-of-the-art review for surveying the recent progress of ANN application at different stages of pavement engineering,including pavement design,construction,inspection and monitoring,and *** study focused on the papers published over the last three decades,especially the studies conducted since *** literature retrieval,a total of 683 papers in this field were identified,among which 143 papers were selected for an in-depth *** ANN architectures used in these studies mainly included multi-layer perceptron neural network(MLPNN),convolutional neural network(CNN)and recurrent neural network(RNN)for processing one-dimensional data,two-dimensional data and time-series ***-based pavement health inspection and monitoring attracted the largest research interest due to its potential to replace human *** ANN has been proved to be an effective tool for pavement material design,cost analysis,defect detection and maintenance planning,it is facing huge challenges in terms of data collection,parameter optimization,model transferability and low-cost data *** attention should be paid to bring multidisciplinary techniques into pavement engineering to tackle existing challenges and widen future opportunities.

关键词： Pavement engineering Pavement design Artificial neural network Deep learning Pavement life cycle Health inspection and monitoring

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Rheological and physicochemical characteristics of asphalt mastics incorporating lime kiln dust and dolomite powder as sustainable fillers

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Journal of Road Engineering 2023年第1期3卷 98-112页

作者： Najib Mukhtar mohd rosli mohd hasan Hanizah Osman Zainiah mohd Zin Khairul Anuar Shariff Nur Izzi Md.Yusoff Ashiru Sani School of Civil Engineering Universiti Sains Malaysia(Engineering Campus)Nibong Tebal 14300PenangMalaysia Department of Civil Engineering Bayero University KanoKabuga 700241 KanoNigeria School of Materials and Mineral Resources Engineering Universiti Sains Malaysia(Engineering Campus)Nibong Tebal 14300PenangMalaysia Department of Civil Engineering Faculty of Engineering&Built EnvironmentUniversiti Kebangsaan MalaysiaSelangor Darul Ehsan 43600Malaysia Department of Civil Engineering Kano University of Science and TechnologyKano 3244Nigeria

The filler-bitumen interaction mechanism is one of the most essential phases for comprehending the asphalt mixture's ***,despite numerous studies,in-depth knowledge of filler-bitumen reciprocity at a microscale level is yet to be *** goal of this research is to gain a better understanding of the fillerbitumen microscale interaction in terms of the synergy and coaction between the physicochemical and rheological performance of mastics due to filler *** rheological properties of two sustainable mastics,dolomite powder(DP)and lime kiln dust(LKD),together with a neat PEN 60/70 binder,were analysed based on a temperature sweep at elevated temperature ***,frequency sweep and multiple stress creep recovery(MSCR)tests were also conducted at pavement serviceability temperature using the dynamic shear rheometer(DSR).Physicochemical tests using a scanning electron microscope(SEM)and energy dispersive X-rays(EDX)were conducted to analyse the impact of parameters such as particle shape,grain size,texture,and chemical *** DSR test results showcased how the incorporation of fillers in asphalt binder considerably improved the performance of the binder in terms of rutting and ***,its strain and nonrecoverable compliance parameters were substantially reduced at higher filler and binder *** filler attributes of low rigden voids(R.V),high fineness modulus(FM),and high specific surface area(SSA)led to greater interfacial stiffness and elasticity in LKD mastics compared to DP mastics at different loading frequencies and temperature *** SEM/EDX results also indicated that the elemental calcium and carbon composition of each filler component,together with its grain morphology,strongly influenced its rheological performance.

关键词： Asphalt mastics Industrial by-product Waste recycling Sustainable material consumption Rheological behaviour Chemical characterisation

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