Author: Xiaorui ZhangPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Analysis of Pavement Remaining Service Life on the Basis of Dynamic Deflections Measurement Considering the Temperature in Asphalt Pavement Layers
Author: Xiaorui ZhangTemperature Adjustment of Dynamic Deflection Measurements on Asphalt Concrete Pavements
Author: Robert Kenneth WolfePublisher:
ISBN:
Category : Pavements, Asphalt concrete
Languages : en
Pages : 116
Book Description
The application of elastic theory to the design of overlays on existing pavement requires that a modulus of elasticity be assigned to the existing structural system. Estimates of elastic modulus are obtained from dynamic deflection reading in the field; but asphalt is a highly temperature-sensitive visco-elastic material and deflections not corrected to a standard temperature can produce misleading results. It is therefore the objective of the present study to develop a procedure for estimating an effective modulus of elasticity for a layer of asphaltic concrete in which some temperature gradient exists because of the combined influences of solar radiation, wind, air temperature, cloud cover and other variables specific to time and location which cause temperature variation within the pavement layer. Two models are presented from the achievement of that objective.
Pavement Condition Index -- Remaining Service Life
Author: GY. BaladiPublisher:
ISBN:
Category : Distress Index
Languages : en
Pages : 28
Book Description
The issues and the setting of common engineering criteria to establish threshold values for a better calculation of the pavement distress indices and Remaining Service Life (RSL) are presented. Benefits derived from the use of RSL such as simplifying the Pavement Management System (PMS), computational procedures, improving communication between the various PMS users, and increasing the PMS capability are also included. Within the framework of a PMS, most State Highway Agencies (SHAs) collect pavement condition data to calculate pavement distress indices. Because pavement condition data is the basis for all PMS analysis, the values of the pavement indices are typically prioritized and the highest priority is placed on eliminating most deficiencies. Examination of this effort has indicated that the method is deficient and that the RSL is a better pavement condition index.
AASHTO Guide for Design of Pavement Structures, 1993
Author: American Association of State Highway and Transportation OfficialsPublisher: AASHTO
ISBN: 1560510552
Category : Pavements
Languages : en
Pages : 622
Book Description
Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.
Airport Pavement Design and Evaluation
Author: Publisher:
ISBN:
Category : Runways (Aeronautics)
Languages : en
Pages : 42
Book Description
Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields
Author: Inge HoffPublisher: CRC Press
ISBN: 1000533336
Category : Technology & Engineering
Languages : en
Pages : 501
Book Description
Innovations in Road, Railway and Airfield Bearing Capacity – Volume 1 comprises the first part of contributions to the 11th International Conference on Bearing Capacity of Roads, Railways and Airfields (2022). In anticipation of the event, it unveils state-of-the-art information and research on the latest policies, traffic loading measurements, in-situ measurements and condition surveys, functional testing, deflection measurement evaluation, structural performance prediction for pavements and tracks, new construction and rehabilitation design systems, frost affected areas, drainage and environmental effects, reinforcement, traditional and recycled materials, full scale testing and on case histories of road, railways and airfields. This edited work is intended for a global audience of road, railway and airfield engineers, researchers and consultants, as well as building and maintenance companies looking to further upgrade their practices in the field.
Superpave Mix Design
Author: Asphalt InstitutePublisher:
ISBN: 9781934154175
Category : Asphalt
Languages : en
Pages : 102
Book Description
Mechanistic-empirical Pavement Design Guide
Author: American Association of State Highway and Transportation OfficialsPublisher: AASHTO
ISBN: 156051423X
Category : Pavements
Languages : en
Pages : 218
Book Description
Aircraft Pavement Design
Author: Institution of Civil Engineers (Great Britain)Publisher:
ISBN:
Category : Transportation
Languages : en
Pages : 128
Book Description
With airport design and construction continuing to be a challenge to civil engineers, these proceedings contribute to the sharing of knowledge necessary for the development of technical improvements.
Design of Long-life Flexible Pavements for Heavy Traffic
Author: M. E. NunnPublisher:
ISBN: 9780727727961
Category : Pavements, Bituminous
Languages : en
Pages : 81
Book Description
Due to an increase in traffic levels over the last 20 years, the costs and disruption of roadworks have increased proportionately. This has led to a re-evaluation of previous standards, and a proposal that a design life of 40 years for heavily trafficked areas should become the new standard. This report reviews design practice and information on flexible pavement performance, and develops an improved design method for heavily trafficked, flexible pavement. design criteria and design concepts. A well constructed pavement, built above threshold strength, will have a very long structural service life provided that distress, in the form of cracks and ruts appearing at the surface, is treated before it begins to affect the structural integrity of the road.