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Correlation between morphology parameters and skid resistance of asphalt pavement

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Transportation Safety and Environment 2022年第1期4卷 76-84页

作者： Weimin Song Central South University School of Civil EngineeringChangsha 410075China

Pavement skid resistance is critical for contributing to traffic safety.In this study,two pavement specimens were fabricated using different aggregate gradations and binder contents.Compaction efforts were made to ensure the same porosity of the two specimens.Some parameters related to the surface morphology were measured using the sand patching method and a 3D laser.The parameters include mean texture depth(MTD),interface roughness(R_(a)),skewness(R_(sk)),kurtosis(R_(ku)),fractal dimension(D)and parameters related to material ratio curve.Relationships between these parameters and skid resistance were quantitatively developed.skid resistance increased along with the increase of MTD,R_(a) and D.From the surface A to surface B,MTD increased from 0.23 to 1.10 mm,R_(a) increased from 0.93 to 1.80 mm,D increased from 2.25 to 2.43 and the British Pendulum Number increased from 80 to 97 accordingly.The comprehensive analysis could assist scholars and practitioners to facilitate the understanding of tyre-pavement interaction and further assist pavement design.

关键词： skid resistance fractal dimension material ratio curve mean texture depth correlation

skid resistance performance and texture lateral distribution within the lanes of asphalt pavements

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Journal of Traffic and Transportation Engineering(English Edition) 2021年

作者： DiYun LiqunHu UlfSandberg ChengTang SchoolofHighway，Chang'anUniversity KeyLaboratoryofSpecialAreaRoadEngineeringofMinistryofEducation，Chang'anUniversity SchoolofCivilEngineeringandTransportation，SouthChinaUniversityofTechnology

The skid resistance and pavement texture can vary a lot for different lane paths， meaning that the lateral shift of the vehicle driving in the lane section can affect the safety significantly. On the other hand， a varying skid resistance across a lane section provides the opportunity to influence vehicles to run in lateral positions where the tire/road friction has not yet been reduced by wear; thus， improving safety. This measure would be useful only if the distribution of skid resistance and pavement texture in the lane sections are investigated at frequent intervals. This study focused on four test sections on in-service urban roads. A friction measuring device known as the T2GO system was used to test the skid resistance performance of pavements for both dry and wet conditions. A high-precision 3D-scanner was used to capture the pavement macrotexture， and a microscope was employed to investigate the pavement abrasion. Subsequently， the effect of the lateral variation across the lane of friction and texture was discussed. The feasibility of displacing the vehicles to run in tracks with better skid resistance was explored in terms of the measured friction and the texture-dependent drainage capacity. The results indicated that driving closer to the lanes’ right side means that better values of friction， texture， and drainage parameters of the unworn pavement surface can be utilized. A 0.3 m or more lateral displacement would create improved friction， in a range between 13% and 14% for 1.5 m track width and between 8 and 11% for 1.65 m track width. Furthermore， the results are useful in studying the vehicles’ sideslip.

关键词： Asphalt pavement lane section skid resistance friction pavement texture drainage，lateral position

Determination and prediction of pavement skid resistance–connecting research and practice

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Journal of Road Engineering 2021年第1期1卷 43-62页

作者： T.F.Fwa Department of Civil&Environmental Engineering National University of SingaporeSingapore 117576Singapore

Adequate pavement skid resistance is a key requirement for safe road operations.Unfortunately,the measurement and prediction of the skid resistance property of an in-service road pavement,or pavement mixture specimens in the laboratory,is a highly challenging process from both theoretical and practical points of view.For more than 60 years,owing to the lack of theoretical solutions to the complex tire-fluid-pavement interaction problem,the practice of pavement skid resistance determination and prediction has essentially been derived from experimental and field observed data.The rapid development of efficient numerical computational techniques and high-power computing facilities in the last two decades made it possible for researchers to numerically solve the tire-fluidpavement interaction problem.It enables the numerical evaluation and prediction of high-speed wet skid resistance,and the determination of the tire-pavement kinetic friction coefficient in the evaluation of low-speed skid resistance.This paper presents a state-of-the-art review of the research development of theoretical mechanistic approaches in the determination and prediction of pavement skid resistance.It covers the following main aspects of the subject matter:(i)mechanisms of skid resistance generation in dry,wetted(i.e.,damp),wet and flooded pavements;(ii)theoretical evaluation of pavement skid resistance in dry,wetted,wet and flooded states;(iii)theoretical approaches in pavement skid resistance prediction;and(iv)concepts of representing the skid resistance state of pavement.The capability of finite element simulation approach for wet skid resistance evaluation with good accuracy is explained.Also highlighted is the practical significance of the Concept of skid resistance State.Areas of practical applications of the concept,coupled with the simulation model,are introduced.They include applications in driving safety analysis,road safety design and control,design of paving mixtures,safety maintenance and management of pavements,and harmonizat

关键词： skid resistance Tire-fluid-pavement interaction Coefficient of kinetic friction Microtexture Macrotexture Pavement friction management

Pavement Friction and skid resistance Measurement Methods: A Literature Review

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Open Journal of Civil Engineering 2016年第4期6卷 537-565页

作者： Behrouz Mataei Hamzeh Zakeri Mohsen Zahedi Fereidoon Moghadas Nejad Department of Engineering Razi University Kermanshah Iran Department of Civil and Environment Engineering Amirkabir University of Technology Tehran Iran

Driving safety is of significance in the automobile industry and transportation systems. Pavement skid resistance has long been recognized as the most important parameter in reducing traffic accidents especially in wet conditions. The knowledge of the friction coefficient and skid resistance is very valuable information for safety enhancement of roads. Thus, it is important to find proper methods for measuring skid resistance and frictional properties of the pavement surface. There is a wide range of measurement methods and devices for measuring skid resistance. This paper presents a review on the research studies that have been done on characterization of the frictional properties of the pavement surface and discussed methods used for measurement and evaluation of texture characteristics and the strengths and weaknesses of these methods. Finally, some ideas have been suggested to develop new methods for better and proper measurement of skid resistance.

关键词： skid resistance Asphalt Pavement Emerging Technology Image Processing Device

Characterization of road surfacing aggregates based on their mineralogical fingerprint

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Journal of Traffic and Transportation Engineering(English Edition) 2022年第5期9卷 880-891页

作者： Dawei Wang Yulin He Chonghui Wang Zeyu Zhang Guoyang Lu Pengfei Liu Markus Oeser School of Transportation Science and Engineering Harbin Institute of TechnologyHarbin 150090China Institute of Highway Engineering RWTH Aachen UniversityAachen 52074Germany Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina

To ensure the safety of infrastructure users,the long-term skid resistance is a crucial factor and is determined in large by the mineralogical and morphological characteristics of surfacing aggregate.Most studies have investigated these aggregate properties separately without considering the interrelation between one another.The objective of this study is to consider the morphological characteristics as well as the mineralogical fingerprint of aggregate to develop an innovative approach to optimize the aggregate selection process.The investigations are based on 11 different aggregate types with a broad range of mineralogy,commonly used in Germany.The long-term influence of polishing and wearing on the surface aggregate was simulated by means of the Aachen Polishing Machine and the MicroDeval test respectively.To evaluate the impact of these tests,the aggregate shape was characterized by means of an imaging system called Aggregate Image Measurement System while the skid resistance of aggregates was evaluated with the British Pendulum Test.The test results show that the quartz and calcite are the key crystals to determine the anti-wear resistance of aggregates.A correlation between the skid resistance,morphological properties and mineralogy is derived,which proves the mineralogical fingerprint technology is practical for characterization of aggregates used in pavement surface layers.

关键词： skid resistance Morphological properties Mineralogical fingerprint identification Road surface Accelerating polish

The mechanisms,evaluation and estimation of anti-skid performance of snowy and icy pavement:A review

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道路工程学报(英文) 2023年第3期3卷 229-238页

作者： Yiqiu Tan Jilu Li Huining Xu Zhiwei Li Heru Wang School of Transportation Science and Engineering Harbin Institute of TechnologyHarbin 150090China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090China College of Intelligent Systems Science and Engineering Harbin Engineering UniversityHarbin 150001China

The anti-skid performance of snowy and icy pavements is a popular research topic among road workers.Snow and ice are pollutants on a road surface.They significantly reduce the skid resistance of pavements,and thus,cause traffic accidents.Pertinent research progress on the skid resistance of snowy and icy pavements was reviewed and summarized in this work.The formation and classification of snowy and icy pavements were described on the basis of the state of snow and ice.The friction mechanisms between tires and snowy and icy pavements were revealed.Measurement methods and their applicability to the skid resistance of snowy and icy pavements were summarized.Factors that affect the skid resistance of pavements were discussed from the perspectives of pavement,environment,and vehicle.In addition,models of snowy and icy pavement resistance were classified into experience,mechanical,and numerical models.The advantages and disadvantages of these models were then compared and analyzed.Some suggestions regarding snowy and icy pavements were presented in accordance with the aforementioned information,including the development of efficient testing tools,the quantification of skid resistance under the coupling effects of multiple factors,the establishment of unified evaluation standards,and the development of more effective skid resistance models.

关键词： Pavement engineering Snowy and icy pavement skid resistance Test approach Friction estimation

A state-of-the-art review of asphalt pavement surface texture and its measurement techniques

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Journal of Road Engineering 2022年第2期2卷 156-180页

作者： Siyu Chen Xiyin Liu Haoyuan Luo Jiangmiao Yu Fuda Chen Yang Zhang Tao Ma Xiaoming Huang School of Transportation Southeast UniversityNanjing 211189China School of Civil Engineering and Transportation South China University of TechnologyGuangzhou 510640China

To understand the research status of asphalt pavement texture,the related achievements and progress of pavement surface texture were systematically sorted out from three aspects:the characterization of pavement surface texture,the texture measurement and evaluation,and the relationship between texture and the skid resistance.Based on the statistical geometric characteristics,the spectral characteristics,the fractal characteristics and the multifractal characteristics,the characteristics of pavement texture were discussed.The test methods of pavement texture were divided into two categories:direct measurement methods and indirect measurement methods.The advantages and disadvantages of each measurement method were summarized.The effects of macro-texture and micro-texture on asphalt pavement were discussed,respectively.The relationship between texture and skid resistance was studied.This review shows that multifractal theory should be further studied from the aspect of road engineering.High-precision non-contact integrated detection technology should be further studied to meet the needs of complex testing environments.The method of finite element numerical simulation has potential for the analysis of pavement skid resistance.In addition,methods such as big data analysis,neural network,and deep learning should be studied to achieve the intelligent perception and management of the whole state of skid resistance prediction.

关键词： Asphalt pavement Surface texture Measurement skid resistance Friction

The slip resistance of profiled surfaces ＆ their interaction with footwear 17th

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The slip resistance of profiled surfaces ＆ their interactio...

Comparison of Two Test Methods for the Assessment of the Slip resistance of Four Different Safety Shoes 17th

第十七届国际工效学大会暨中国人类工效学会成立20周年庆...

作者： Steve Thorpe Paul Lemon Graeme Hunwin Kevin Hallas Health ＆ Safety Laboratory An Agency of the Health ＆ Safety Executive

Profiled flooring materials such as five-bar aluminium chequer-plate are often perceived as slip resistant and commonly used to control slip risk in industrial workplaces.For example,walkways,stairs and platforms in many food factories are made from or covered with this material.Similar materials are used in other high-risk areas such as elevated work platforms and tail lifts fitted to commercial vehicles.The experience of workplace slip accidents suggests that these surfaces may not offer the slip resistance expected when contaminated.In the UK,the pendulum test has been used by the Health ＆ Safety Laboratory（HSL） to measure the frictional properties of these surfaces where accidents have occurred,often indicating low levels of friction.To explore this technique further,modifications were made to the slider dimensions in order to allow measurements of specific elements of the profiled surface.This will allow the pendulum to be used to characterise individual components within profiled floors and allow small areas of wear or defects to be better evaluated.Of course,it is difficult to separate the properties of the flooring from those of the footwear,and it is important to understand how the two work together in a particular environment.HSL have undertaken footwear slip resistance testing on five-bar aluminium chequer plate using the ramp method.The results show that the selection of slip resistant footwear,which can be difficult on simple surfaces,is even more difficult in combination with a profiled surface.Without testing particular shoes on the surface,it is hard to predict their behaviour.

关键词： LIPE gene Decks Fruit Products Accidents Work platforms Clock weights footwear Surfaces skid resistance

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Comparison of Two Test Methods for the Assessment of the Sli...