Author: Xinjun LiPublisher:
ISBN:
Category :
Languages : en
Pages : 238
Book Description
Evaluation of the Factors that Affect the Fracture Resistance of Asphalt Mixtures at Low Temperatures Using Mechanical Testing and Acoustic Emission Methods
Author: Xinjun LiMine engineering geological disaster forecasting, monitoring, and prevention
Author: Jie ChenPublisher: Frontiers Media SA
ISBN: 2832510566
Category : Science
Languages : en
Pages : 332
Book Description
Asphalt Paving Technology 2014
Author: Eugene SkokPublisher: DEStech Publications, Inc
ISBN: 1605952060
Category : Technology & Engineering
Languages : en
Pages : 777
Book Description
New developments in asphalt with bio-oil, rubber and polymer componentsEmpirical data and models on binders, aggregates, RAP, WMA, HMA for pavementSpecial section on asphalt paving research in IndiaFully-searchable text on CD-ROM (included) The latest volume of the AAPT series features over two dozen research presentations devoted to the chemistry, engineering, modeling and testing of asphalt materials and processing. Developments in the use of components like bio-oil are discussed, as are strategies for testing asphalt components for wear and durability at low and high temperatures. The book offers new data on the performance of reclaimed/recycled materials in asphalt paving. A special section focuses exclusively on discussions of binder modifications. The CD-ROM displays figures and illustrations in articles in full color along with a title screen and main menu screen. Each user can link to all papers from the Table of Contents and Author Index and also link to papers and front matter by using the global bookmarks which allow navigation of the entire CD-ROM from every article. Search features on the CD-ROM can be by full text including all key words, article title, author name, and session title. The CD-ROM has Autorun feature for Windows 2000 with Service Pack 4 or higher products along with the program for Adobe Acrobat Reader with Search 11.0. One year of technical support is included with your purchase of this product.
Evaluation of the Low Temperature Fracture Resistance of Asphalt Mixtures Using the Semi Circular Bend Test
Author: Investigation of the Fracture Resistance of Asphalt Mixtures at Low Temperatures with a Semi Circular Bend (SCB) Test
Author: Xue LiFracture Behavior of Asphalt Materials
Author: Sadjad PirmohammadPublisher: Springer Nature
ISBN: 3030399745
Category : Technology & Engineering
Languages : en
Pages : 229
Book Description
This book discusses the applications of fracture mechanics in the design and maintenance of asphalt concrete overlays. It provides useful information to help readers understand the effects of different material and loading type parameters on the fracture properties of asphalt concretes. It also reviews relevant numerical and experimental studies, and describes in detail design parameters such as aggregate type, air void, loading mode, and additives, based on the authors experience and that of other researchers.
An Acoustic Emission-based Test to Evaluate Low Temperature Behavior of Asphalt Materials
Author: Evaluation of the Fracture Resistance of Asphalt Mixtures Based on Bilinear Cohesive Zone Model
Author: Dong ZhangPublisher:
ISBN:
Category : Asphalt
Languages : en
Pages : 5
Book Description
The cohesive zone model was employed to study the fracture resistance of asphalt mixtures at low temperature. The bilinear traction-separation curve that directly reflects the magnitudes of the tensile strength, fracture energy, and failure separation of asphalt mixtures was proposed to evaluate the fracture resistance of asphalt mixtures. The fracture resistance of the asphalt mixtures with the nominal maximum aggregate size of 13 mm using different asphalt types and asphalt contents and at different temperatures was evaluated using the proposed method. The results of the study indicate that the proposed method can be used to comprehensively evaluate the fracture resistance of asphalt mixtures.
Low-temperature Cracking
Author: D. H. JungPublisher: National Research Council
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 124
Book Description
This report describes the thermal stress restrained specimen test (TSRST), which was selected to evaluate the low-temperature cracking resistance of asphalt concrete mixtures. The TSRST system includes a load frame, step-motor-driven load ram, data acquisition hardware and software, temperature controller, and specimen alignment stand. An experiment design that considered a range of mixture and test condition variables was developed to evaluate the suitability of TSRST for characterizing low-temperature cracking resistance of asphalt concrete mixtures. Four asphalts and two aggregates were selected for the experiment. The mixture variables included asphalt type, aggregate type, and air voids content; the test condition variables included specimen size, stress relaxation, aging, and cooling rate.
Selection and Performance Evaluation of a Test Method to Assess Thermal Cracking Resistance of Asphalt-aggregate Mixtures
Author: Duhwoe JungPublisher:
ISBN:
Category : Pavements, Asphalt concrete
Languages : en
Pages : 610
Book Description
Thermal distress in asphalt concrete pavements is a widespread problem around the world. Thermal cracking can be divided into two modes of distress: low temperature cracking and thermal fatigue cracking. Low temperature cracking results from extremely cold temperatures; thermal fatigue cracking results from daily temperature cycles. Low temperature cracking is attributed to tensile stresses induced in the asphalt concrete pavement as the temperature drops to an extremely low temperature. If the pavement is cooled, tensile stresses develop as a result of the pavement's tendency to contract. The friction between the pavement and the base layer resists the contraction. If the tensile stress equals the strength of the mixture at that temperature, a micro-crack develops at the surface of the pavement. Under repeated temperature cycles, the crack penetrates the full depth and across the asphalt concrete layer. The thermal stress restrained specimen test (TSRST) was identified as an accelerated laboratory test to evaluate the thermal cracking resistance of asphalt concrete mixtures. The TSRST system developed at OSU includes a load system, data control/acquisition system and software, temperature control system, and specimen alignment stand. The overall system is controlled by a personal computer. A TSRST is conducted by cooling an asphalt concrete specimen at a specified rate while monitoring the specimen at constant length. A typical thermally-induced stress curve is divided into two parts: relaxation and non-relaxation. The temperature at which the curve is divided into two parts is termed the transition temperature. The temperature at fracture is termed the fracture temperature and the maximum stress is the fracture strength. An extensive number of TSRSTs over a wide range of conditions were performed to investigate the thermal cracking resistance of asphalt concrete mixtures. The TSRST results provided a very strong indication of low temperature cracking resistance for all mixtures considered. A ranking of mixtures for low temperature cracking resistance based on the TSRST fracture temperature was in excellent agreement with a ranking based on the physical properties of the asphalt cements. It is highly recommended that the TSRST be used in mix evaluation to identify low temperature cracking resistance of asphalt concrete mixtures. The TSRST showed very promising results regarding the effect of all variables which are currently considered to affect the low temperature cracking of mixtures. The variables considered to have significant affect on the low temperature cracking resistance of mixtures in this study include asphalt type, aggregate type, degree of aging, cooling rate, and stress relaxation.