Fracture Mechanics Based Approaches to Fatigue Cracking of Paving Mixtures PDF Download
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Author: Ibrahim Hussien Shehata
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 106
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Author: Ibrahim Hussien Shehata
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 106
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Author: O. Abdulshafi
Publisher:
ISBN:
Category : Asphalt emulsion mixtures
Languages : en
Pages : 14
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Book Description
Fatigue failure can be attributed to cyclic (dynamic) loading energy which induces stresses and/or strains below the allowable strength and/or fracture strain level of a material. Since fatigue failures evolve over time, damage theories have been postulated to describe the mechanism by which this failure occurs. When a crack exists or forms early in the life of a pavement, fracture mechanics becomes the most relevant theory to explain the damage process. If conditions prevail to promote brittle fracture, the stress intensity factor and its critical value, Kc (or Gc) , becomes the most relevant parameter controlling the cracking and fatigue damage process. If conditions prevail to promote ductile fracture, the ductile fracture parameter, Jc, becomes the parameter for consideration. If conditions prevail to promote creep fracture, the C* - Line Integral offers the most relevant fracture criteria. Since the definition of Jc or C* in fracture mechanics imposes the condition that either parameter will degenerate into Kc (or Gc) when brittle fracture conditions, prevail, the utilization of Jc or C* provides the user with a powerful tool to characterize the fatigue/fracture process in a more general form. Since asphaltic mixtures can exhibit brittle and/or creep fracture, it is apparent that the C* - Line Integral can more closely capture the fatigue/fracture damage process than Kc or Jc. In this paper, a simple laboratory procedure to determine the C* - Integral, which is interpreted as the energy release rate, is presented. In addition, a mixture efficiency factor (`?*) is introduced. The mixture efficiency factor is used to examine and compare the efficiency of asphaltic concrete mixture in resisting fracture cracking using different aggregates and asphalt cement binders.
Author: Fujie Zhou
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 94
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Book Description
The main objective of this project was to develop and verify the overlay tester (OT) based fatigue cracking prediction approach in which the OT is used to determine fracture properties (A and n) of hot-mix asphalt (HMA) mixtures. This approach was developed based on fracture mechanics. However, not only was the fatigue crack propagation characterized by Paris' law fracture concepts, but the crack initiation described by traditional fatigue model was also included in this approach. In this approach, the fundamental HMA fracture properties (A and n) were used to estimate fatigue life of asphalt pavements including crack initiation and crack propagation.
Author: K. Majidzadeh
Publisher:
ISBN:
Category : Asphalts
Languages : en
Pages : 18
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The paper discusses application of fracture mechanics to the analysis of fatigue characteristics of paving mixtures. A method of determination of crack growth parameters for asphaltic beams resting on elastic foundation is presented. The finite element method of analysis is used for the determination of stress intensity factors for various crack sizes. The effect of material characteristics, foundation modulus, and mode of loading on the crack growth process of asphaltic mixtures, is discussed. The effect of asphalt content, mixture density, and asphalt penetration on the Paris crack growth law is shown. It is also shown that fracture mechanics principles can be used to predict fatigue life of pavement material.
Author: Adli Hekmat Al-Balbissi
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 410
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Author: Kenneth L. Jerina
Publisher: ASTM International
ISBN: 0803126174
Category : Technology & Engineering
Languages : en
Pages : 480
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Author: Sadjad Pirmohammad
Publisher: Springer Nature
ISBN: 3030399745
Category : Technology & Engineering
Languages : en
Pages : 229
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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.
Author: A. Scarpas
Publisher: Springer Science & Business Media
ISBN: 9400745664
Category : Technology & Engineering
Languages : en
Pages : 1340
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Book Description
In the recent past, new materials, laboratory and in-situ testing methods and construction techniques have been introduced. In addition, modern computational techniques such as the finite element method enable the utilization of sophisticated constitutive models for realistic model-based predictions of the response of pavements. The 7th RILEM International Conference on Cracking of Pavements provided an international forum for the exchange of ideas, information and knowledge amongst experts involved in computational analysis, material production, experimental characterization, design and construction of pavements. All submitted contributions were subjected to an exhaustive refereed peer review procedure by the Scientific Committee, the Editors and a large group of international experts in the topic. On the basis of their recommendations, 129 contributions which best suited the goals and the objectives of the Conference were chosen for presentation and inclusion in the Proceedings. The strong message that emanates from the accepted contributions is that, by accounting for the idiosyncrasies of the response of pavement engineering materials, modern sophisticated constitutive models in combination with new experimental material characterization and construction techniques provide a powerful arsenal for understanding and designing against the mechanisms and the processes causing cracking and pavement response deterioration. As such they enable the adoption of truly "mechanistic" design methodologies. The papers represent the following topics: Laboratory evaluation of asphalt concrete cracking potential; Pavement cracking detection; Field investigation of pavement cracking; Pavement cracking modeling response, crack analysis and damage prediction; Performance of concrete pavements and white toppings; Fatigue cracking and damage characterization of asphalt concrete; Evaluation of the effectiveness of asphalt concrete modification; Crack growth parameters and mechanisms; Evaluation, quantification and modeling of asphalt healing properties; Reinforcement and interlayer systems for crack mitigation; Thermal and low temperature cracking of pavements; and Cracking propensity of WMA and recycled asphalts.
Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461519691
Category : Science
Languages : en
Pages : 426
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 38 (thesis year 1993) a total of 13,787 thesis titles from 22 Canadian and 164 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 38 reports theses submitted in 1993, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Author:
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ISBN:
Category :
Languages : en
Pages :
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