opthinal optimization of thin asphalt layers

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OPTHINAL Optimization of Thin Asphalt Layers - DiVA

2014-7-4  OPTHINAL Final report 15 March 2011 3 Project No. VV 2009/40520 Project acronym: OPTHINAL Project title: Optimization of Thin Asphalt Layers Final Report Due date of deliverable: 30 November 2011 Actual submission date: 17 December 2010 Start date of project: 23 June 2009 End date of project: 31 March 2011

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Optimization of thin asphalt layers, OPTHINAL. Final report

ERA-NET ROAD initiated a transnational research project titled "Optimization of thin asphalt layers". Thin asphalt layers have been used extensively and with promising results for more than 15 years in several countries in Europe and abroad. They seem to be cost effective, fast to build and may have good surface properties.

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Optimization of thin asphalt layers : state-of-the ... - CORE

Abstract. ERA-NET ROAD initiated a transnational research project titled "Optimization of thin asphalt layers". The DRI-BRRC-VTI Consortium was trusted with carrying out the project and began with a State-of-the-Art report covering, among other things, a literature study and an inventory of experience with using thin asphalt layers (TAL).

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Design Optimization of Ultra-Thin Asphalt Pavement on ...

2020-12-27  In the design of cement concrete bridge deck ultra-thin layer asphalt pavement, due to the insufficient design of construction method and asphalt preparation ratio, the adhesion and firmness of the bridge deck ultra-thin layer are poor. Therefore, the optimization method of asphalt pavement design based on artificial intelligence is designed. Through the setting of coarse and

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Reliability-Based Design Optimization of Flexible ...

Reliability-Based Design Optimization of Flexible Pavements Using Kriging Models ... for pavement sections that are designed with thin asphalt layers and thicker granular base/subbase layers, the same (target) levels of reliability can be achieved by increasing the asphalt layer thickness, particularly when the pavement failure is governed by ...

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Prediction of thin asphalt concrete overlay thickness and ...

2018-12-1  A typical thin AC overlay FDTD model is shown in Fig. 3. The dielectric constants of the AC overlay and existing old AC pavement are assumed to be 7 and 4, respectively. In practice the dielectric values typically range from 4 to 8. Both layers are

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Real-Time Density and Thickness Estimation of Thin

2019-7-15  Achieving desired density is crucial for thin asphalt concrete (AC) overlay construction quality control and quality assurance purposes. Ground penetrating radar (GPR) can be implemented for AC pavement layer thickness and density prediction during compaction. However, the overlapping of GPR reflections from surface and bottom of the thin AC overlay,

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Development and Performance Evaluation of Thin-Layer

2021-6-11  The asphalt mixture rut board specimen (300 mm × 300 mm × 50 mm) was prepared, and the surface was laid with a color antiwearing thin layer. The frequency conversion and wear times were set according to the test speed requirements, and the texture depth in the circular wear zone and the mass loss per unit area of the specimen were measured ...

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于华洋

2021-6-3  职称:副教授,硕士生导师电子邮件:[email protected]办公地址:交通大楼306室办公电话:18898837614个人简介于华洋,中共党员,先后在东南大学、香港理工大学获得本硕、博士学位,在华南理工大学完成博士后研究。主要从事高性能路面 ...

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An Artificial Intelligence Method for Asphalt Pavement ...

2018-4-30  This study establishes an artificial intelligence (AI) model for detecting pothole on asphalt pavement surface. Image processing methods including Gaussian filter, steerable filter, and integral projection are utilized for extracting features from digital images. A data set consisting of 200 image samples has been collected to train and validate the predictive performance of

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Optimization of thin asphalt layers : state-of-the ... - CORE

Abstract. ERA-NET ROAD initiated a transnational research project titled "Optimization of thin asphalt layers". The DRI-BRRC-VTI Consortium was trusted with carrying out the project and began with a State-of-the-Art report covering, among other things, a literature study and an inventory of experience with using thin asphalt layers (TAL).

Get Price

Design Optimization of Ultra-Thin Asphalt Pavement on ...

2020-12-27  In the design of cement concrete bridge deck ultra-thin layer asphalt pavement, due to the insufficient design of construction method and asphalt preparation ratio, the adhesion and firmness of the bridge deck ultra-thin layer are poor. Therefore, the optimization method of asphalt pavement design based on artificial intelligence is designed. Through the setting of coarse and

Get Price

Real-Time Density and Thickness Estimation of Thin

2019-7-15  Achieving desired density is crucial for thin asphalt concrete (AC) overlay construction quality control and quality assurance purposes. Ground penetrating radar (GPR) can be implemented for AC pavement layer thickness and density prediction during compaction. However, the overlapping of GPR reflections from surface and bottom of the thin AC overlay,

Get Price

Prediction of thin asphalt concrete overlay thickness and ...

2018-12-1  A typical thin AC overlay FDTD model is shown in Fig. 3. The dielectric constants of the AC overlay and existing old AC pavement are assumed to be 7 and 4, respectively. In practice the dielectric values typically range from 4 to 8. Both layers are

Get Price

Optimization of Inverted Base Pavement Designs with Thin ...

Optimization of Inverted Base Pavement Designs with Thin Asphalt Surfacing ... Inverted base pavements can be built using conventional techniques, by placing a well compacted graded aggregate base layer between a thin asphalt concrete layer and a cement-treated subbase. The proximity of the graded aggregate base layer to the load makes its ...

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FDTD Simulation for Moisture Asphalt Pavement Thickness ...

2021-5-22  Ground penetrating radar (GPR) has the potential to estimate the thickness and density of asphalt pavement during compaction. However, the surface moisture sprayed by the compactor interferes with the accuracy of data collection significantly. This study proposed an approach based on the extended common midpoint (XCMP) method to minimize the effect of

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What Are The Different Types Of Asphalt Surface Layers?

2019-5-3  Asphalt Road Construction may seem you not a curious thing to know. However, asphalt is designed to combat the weathers, heavy traffics and other pavement problems. Different Types Of Asphalt Layers For Surface Pavement

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Thin noise reducing pavements - Experiences

In Denmark a project on urban roads was started in 2003.The goal was to develop and test thin layers as noise reducing pavements under Nordic conditions.This project is a part of the European SILVIA project started in September 2002.Another Danish project with test sections of thin layer pavements on a highway was started in the summer of 2004 ...

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DYNAPAC TANDEM ASPHALT ROLLERS

COMPACTS ANY TYPE OF ASPHALT MIX With high frequency/low amplitude for thin layers and high amplitude for thick layers the machines are versatile and will efficiently compact any type of asphalt mix. Thin layers with high stone content cool off quickly and need to be compacted fast, but use of a high amplitude risks crushing the aggregate.

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Publications — Materials and Pavements

Linear Elastic Layer Theory as a Model of Displacements Measured Within and Beneath Flexible Pavement Structures Loaded by the Dynaflect: 123-25: F.H. Scrivner, C.H. MichalakAugust 1974: Calculation of the Elastic Moduli of a Two Layer Pavement System from Measured Surface Deflections - Part II: 123-6A: F.H. Scrivner, C.H. Michalak, W.M. Moore1971

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FDTD Simulation for Moisture Asphalt Pavement Thickness ...

2021-5-22  Ground penetrating radar (GPR) has the potential to estimate the thickness and density of asphalt pavement during compaction. However, the surface moisture sprayed by the compactor interferes with the accuracy of data collection significantly. This study proposed an approach based on the extended common midpoint (XCMP) method to minimize the effect of

Get Price

Optimization of Inverted Base Pavement Designs with Thin ...

Optimization of Inverted Base Pavement Designs with Thin Asphalt Surfacing ... Inverted base pavements can be built using conventional techniques, by placing a well compacted graded aggregate base layer between a thin asphalt concrete layer and a cement-treated subbase. The proximity of the graded aggregate base layer to the load makes its ...

Get Price

DYNAPAC ASPHALT TANDEM ROLLERS - jalarue

2021-6-21  FAST, EFFECTIVE COMPACTION FOR THIN LAYERS High vibration frequency compaction has long been an important feature on Dynapac asphalt rollers. Modern thin layers need to be compacted fast because they cool off quickly. A higher amplitude will compact fast but might crush the aggregate material.

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Rehabilitation Strategies for Highway Pavements

Asphalt pavement on untreated or treated base has a hot-mixed asphalt concrete surface, usually over a base layer which may be either untreated or treated granular material, and possibly a subbase layer (usually untreated). Full-depth asphalt concrete pavements are those in which all layers contain an asphaltic binder. The asphalt concrete

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Experimental study of the performance of porous ultra

2021-10-19  Porous ultra-thin asphalt overlay (PUAO) is widely used in maintenance and new road surface layers. Since the paving thickness of PUAO is

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Thin noise reducing pavements - Experiences

In Denmark a project on urban roads was started in 2003.The goal was to develop and test thin layers as noise reducing pavements under Nordic conditions.This project is a part of the European SILVIA project started in September 2002.Another Danish project with test sections of thin layer pavements on a highway was started in the summer of 2004 ...

Get Price

DYNAPAC TANDEM ASPHALT ROLLERS

COMPACTS ANY TYPE OF ASPHALT MIX With high frequency/low amplitude for thin layers and high amplitude for thick layers the machines are versatile and will efficiently compact any type of asphalt mix. Thin layers with high stone content cool off quickly and need to be compacted fast, but use of a high amplitude risks crushing the aggregate.

Get Price

AnArtificialIntelligenceMethodforAsphaltPavementPothole ...

2018-3-19  traffic condition, poor drainage, thin asphalt layer sub-structure, and weak substructure can be the causes of potholeappearance[6].Indevelopingcountries,thepave- ... instead of a nonlinear optimization problem in SVM. During the learning process, LS

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The advancement of asphalt pavements over the last 50 ...

The advancement of asphalt pavements over the last 50 years. Dr. Jon A. Epps, Ph.D., P.E. and Dave Johnson, P.E. Asphalt pavements are the surfacing choice for about 94 percent of the roughly 2.75 million miles of paved roads in the United States. Asphalt is used to construct sub-base, base course and surface layers.

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Publications — Materials and Pavements

Linear Elastic Layer Theory as a Model of Displacements Measured Within and Beneath Flexible Pavement Structures Loaded by the Dynaflect: 123-25: F.H. Scrivner, C.H. MichalakAugust 1974: Calculation of the Elastic Moduli of a Two Layer Pavement System from Measured Surface Deflections - Part II: 123-6A: F.H. Scrivner, C.H. Michalak, W.M. Moore1971

Get Price