The Experts below are selected from a list of 14766 Experts worldwide ranked by ideXlab platform
Li Jun Suo - One of the best experts on this subject based on the ideXlab platform.
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Analysis of Thermal Stress for Asphalt Surface on Porous Concrete Base
Advanced Materials Research, 2012Co-Authors: Li Jun Suo, Huai Feng TongAbstract:In the paper, three–dimension finite element model of Asphalt pavement, which includes transverse contraction joint of porous concrete base and Asphalt Surface, is established for the purpose of studying thermal stress of Asphalt Surface which is located in transverse contraction joint of porous concrete base. Calculation results of thermal stress are compared with each other. The results show that thermal stress of Asphalt Surface increases with increase of Surface’s modulus, and thermal stress of Asphalt Surface increases with increase of ratio of base’s modulus to foundation’s modulus, and thermal stress of Asphalt Surface increases with increase of temperature field of base.
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Study on Shearing Stress of Asphalt Surface on Lean Concrete Base
Applied Mechanics and Materials, 2012Co-Authors: Li Jun SuoAbstract:In order to study the shearing stress of Asphalt Surface on lean concrete base, first of all, three–dimension finite element model of the Asphalt pavement is established. The main objectives of the paper are investigated. One is calculation for shearing stress of Asphalt Surface in transverse contraction joint of lean concrete base, and the other is analysis for relationship between load stress of Asphalt Surface and parameters, such as thickness, modulus. The results show that maximum shearing stress, which is caused by load, is evident in Asphalt Surface which is located in transverse contraction joint of lean concrete base of Asphalt pavement. Maximum shearing stress decrease, decrease, decrease and increase respectively with increase of the Surface’s modulus, the Surface’s thickness, base’s thickness and ratio of base’s modulus to foundation’s modulus.
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Mechanical Analysis for Asphalt Surface in Transverse Contraction Joint of Porous Concrete Base
Advanced Materials Research, 2012Co-Authors: Li Jun SuoAbstract:In the field of Asphalt pavement, the study has shown that porous concrete base has a good performance of drainage capacity. When porous concrete is used in Asphalt pavement, problem of water damage for Asphalt pavement can be settled effectively. Because of that, more and more porous concrete base have been applied to Asphalt pavement construction in recent years. As a matter of fact, it is necessary to do mechanical analysis for Asphalt Surface, which is located in the middle of porous concrete base’s transverse contraction joint, in order to put forward theoretical basis for Asphalt Surface design. In the paper, three–dimension finite element model of Asphalt pavement, which includes transverse contraction joint of porous concrete base and Asphalt Surface, is created for the aim of doing mechanical analysis of Asphalt Surface which is located in transverse contraction joint of porous concrete base. Based on numerical method, finite element software, such as ANSYS, is employed to do mechanical analysis for Asphalt Surface which is located in transverse contraction joint of porous concrete base of Asphalt pavement. Mechanical analysis show that load stress is compressive stress, and maximum shearing stress, which is caused by load, is evident in Asphalt Surface which is located in transverse contraction joint of porous concrete base of Asphalt pavement. Maximum shearing stress decrease, decrease, decrease and increase respectively with increase of the Surface’s modulus, the Surface’s thickness, base’s thickness and ratio of base’s modulus to foundation’s modulus. Meanwhile, maximum shearing stress, which is caused by thermal stress, increase and decrease respectively with increase of Surface’s modulus and ratio of base’s modulus to foundation’s modulus.
Chris A Bell - One of the best experts on this subject based on the ideXlab platform.
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study of aircraft accident related to Asphalt runway skid resistance
Transportation Research Record, 1996Co-Authors: Guillermo Thenoux, Wendy Allen, Chris A BellAbstract:On February 20, 1991, a brand-new British Aerospace BAE 146-200 aircraft, operated by a commercial airline, landed at Guardiamarina Airport in Port Williams, Chile. The aircraft landed under good weather conditions on an Asphalt Surface treatment runway and skidded more than 1,000 m into the Beagle Channel. It was a charter flight with 60 tourists on board; 40 survived. A long investigation provided evidence on why the aircraft skidded off the end of the runway.
Gregory W White - One of the best experts on this subject based on the ideXlab platform.
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Quantifying the impact of reclaimed Asphalt pavement on airport Asphalt Surfaces
Construction and Building Materials, 2019Co-Authors: Gregory W WhiteAbstract:Abstract Airports desire sustainable infrastructure solutions and airport pavements provide an opportunity for increased reuse and recycling of materials. The recycling of reclaimed Asphalt pavement (RAP) in airport pavement Surfaces is attractive and viable, but has been resisted by many airports. Two Asphalt mixtures, both produced with and without RAP, were compared based on Marshall mixture design properties, laboratory performance-indicative test results and full-scale Asphalt production properties. No testing indicated any detrimental effect associated with the inclusion of low-risk RAP sources at 5–10% RAP content. However, the Surface friction was significantly reduced by the inclusion of RAP. It is recommended that further research consider the cause of the reduced Surface friction associated with low-risk RAP inclusion, as well as the influence of other RAP sources on airport Asphalt Surface performance.
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Australian airport Asphalt Surface treatments
Proceedings of 6th Eurasphalt & Eurobitume Congress, 2016Co-Authors: Gregory W White, Michael ThompsonAbstract:Many airport Surfaces in Australia are constructed of dense graded Asphalt. These Surfaces are generally replaced by Asphalt overlay every 10-15 years. Airport Asphalt Surfaces are highly suited to sprayed Surface preservation treatments. There are a range of treatments to preserve and extend the life of Asphalt Surfaces. These generally replace lost binder and/or fine mineral material. These treatments generally create a temporary protective coating over the existing Surface. A number of new materials have largely replaced the traditional coal-tar based and cutback bitumen products. These new materials are emulsion based and often include polymers. This paper presents a summary of experience and new materials for treatment of Asphalt Surfaces at Australian airports. Oxidation retarders and Surface filling treatments are explored, as well as fuel resistant membranes. A number of lessons learnt are presented and a whole of life approach is undertaken in considering future opportunities
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State of the art: interface shear resistance of Asphalt Surface layers
International Journal of Pavement Engineering, 2016Co-Authors: Gregory W WhiteAbstract:AbstractInterface shear resistance is a measure of the bonding between two layers under shear loading. Adequate interface shear resistance and long-term bonding of the Surface to the underlying pavement are critical to the performance of pavement structures. Interface shear strength is a function of adhesion, friction and aggregate embedment or interlock and is commonly modelled as a Mohr–Coulomb type envelope. Measurement of interface shear resistance can be performed in the field on full-scale pavements, in the laboratory on cores recovered from the Surface or in the laboratory using samples prepared in the laboratory. However, laboratory testing of cores recovered from the field is likely to be more reliable and repeatable than field testing. There is a large range of test methods and procedures for the measurement of interface bond. These test methods are generally grouped into three main loading mechanisms; axial tension, torsional shear and direct shear. Direct shear tests offer a more comprehensive...
Hong-xin Guan - One of the best experts on this subject based on the ideXlab platform.
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Dynamic Stability Control Criterion for an Asphalt Surface Course under Different Traffic Volumes
Journal of Highway and Transportation Research and Development (English Edition), 2017Co-Authors: Yu Gao, Hong-xin GuanAbstract:To control the rutting resistance of a semi-rigid-base Asphalt pavement under different traffic volumes, a rutting test is conducted to simulate the actual pavement internal temperature field on full-depth Asphalt Surface course samples excavated from different sections (different corresponding traffic volumes) and rutting depths in an expressway reconstruction and extension project. The relationship between dynamic stability and rutting depth on the main lane is analyzed. The dynamic stability control criteria, which are dynamic stabilities corresponding to 15 mm rut depth, to fit the traffic volumes of different sections are determined. The accumulative equivalent axles of different sections are collected and calculated. The relationship between the dynamic stability control criterion of each section and its accumulative equivalent axle is analyzed to obtain a fitting equation. A dynamic stability control criterion for the Asphalt pavement structure at heavy traffic level is suggested based on this fitting equation. Afterward, a method of determining the dynamic stability control criterion for the entire Asphalt Surface course under different traffic volumes is recommended.
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Layered Decomposing Method for Dynamic Stability Controlling Criterion of Asphalt-Surface Course
Journal of Highway and Transportation Research and Development (English Edition), 2016Co-Authors: Hong-xin GuanAbstract:AbstractThis paper proposes an equation to decompose the dynamic stability (DS) and its controlling criterion of an Asphalt Surface course into DS of the Asphalt mixture layer. Wheel tracking tests...
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Asphalt Surface Course Structure Combination Design Based on Anti-Rut Performance for Very Long Uphill Expressway
Applied Mechanics and Materials, 2011Co-Authors: Hong-xin Guan, Zeng Jie Luo, Qi Sen ZhangAbstract:Rut disease and anti-rut performance of a 13km very long uphill expressway was studied, which indicates that standard rut testing methods and dynamic stability controlling standard values are not suitable for the very long uphill expressway. According to the study, the 52km very long continuous uphill expressway was divided into three sections based on the temperature and longitudinal slope condition. Many Asphalt Surface course combination structures were set for the three sections. Total-thickness rut tests were carried out for these combination structures at heavy loading, low speed and different temperature conditions with the developed Wheel Tracking Test equipment. A dynamic stability controlling standard value for the whole Asphalt Surface course of the 52km long uphill expressway was determined, and according to the dynamic stability controlling standard value, the optimal Asphalt Surface course combination structures were recommended for the three sections.
Guillermo Thenoux - One of the best experts on this subject based on the ideXlab platform.
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study of aircraft accident related to Asphalt runway skid resistance
Transportation Research Record, 1996Co-Authors: Guillermo Thenoux, Wendy Allen, Chris A BellAbstract:On February 20, 1991, a brand-new British Aerospace BAE 146-200 aircraft, operated by a commercial airline, landed at Guardiamarina Airport in Port Williams, Chile. The aircraft landed under good weather conditions on an Asphalt Surface treatment runway and skidded more than 1,000 m into the Beagle Channel. It was a charter flight with 60 tourists on board; 40 survived. A long investigation provided evidence on why the aircraft skidded off the end of the runway.
