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Author: Wenting Liu Publisher: ISBN: Category : Pavements, Asphalt Languages : en Pages : 58
Book Description
FPS 19W is the approved flexible pavement thickness design system used by the Texas Department of Transportation (TxDOT). Project 0-1869 made several enhancements to this system, including: a) transferring the system to the Windows® platform, b) automating the Texas Triaxial system to provide a thickness checking system, c) incorporating stress and strain computational subsystem so that classical fatigue and rutting lives can be estimated for the designed pavement, and d) incorporating an extensive on-line help system. In this project the models within FPS 19W were further calibrated. New approaches were also incorporated for handling designs on pavements with very thick flexible bases.
Author: Wenting Liu Publisher: ISBN: Category : Pavements, Asphalt Languages : en Pages : 58
Book Description
FPS 19W is the approved flexible pavement thickness design system used by the Texas Department of Transportation (TxDOT). Project 0-1869 made several enhancements to this system, including: a) transferring the system to the Windows® platform, b) automating the Texas Triaxial system to provide a thickness checking system, c) incorporating stress and strain computational subsystem so that classical fatigue and rutting lives can be estimated for the designed pavement, and d) incorporating an extensive on-line help system. In this project the models within FPS 19W were further calibrated. New approaches were also incorporated for handling designs on pavements with very thick flexible bases.
Author: Kasthurirangan Gopalakrishnan Publisher: Springer ISBN: 3642045863 Category : Computers Languages : en Pages : 330
Book Description
The term “soft computing” applies to variants of and combinations under the four broad categories of evolutionary computing, neural networks, fuzzy logic, and Bayesian statistics. Although each one has its separate strengths, the complem- tary nature of these techniques when used in combination (hybrid) makes them a powerful alternative for solving complex problems where conventional mat- matical methods fail. The use of intelligent and soft computing techniques in the field of geo- chanical and pavement engineering has steadily increased over the past decade owing to their ability to admit approximate reasoning, imprecision, uncertainty and partial truth. Since real-life infrastructure engineering decisions are made in ambiguous environments that require human expertise, the application of soft computing techniques has been an attractive option in pavement and geomecha- cal modeling. The objective of this carefully edited book is to highlight key recent advances made in the application of soft computing techniques in pavement and geo- chanical systems. Soft computing techniques discussed in this book include, but are not limited to: neural networks, evolutionary computing, swarm intelligence, probabilistic modeling, kernel machines, knowledge discovery and data mining, neuro-fuzzy systems and hybrid approaches. Highlighted application areas include infrastructure materials modeling, pavement analysis and design, rapid interpre- tion of nondestructive testing results, porous asphalt concrete distress modeling, model parameter identification, pavement engineering inversion problems, s- grade soils characterization, and backcalculation of pavement layer thickness and moduli.
Author: Gerardo W. Flintsch Publisher: ISBN: Category : Pavements, Composite Languages : en Pages : 70
Book Description
Composite pavement systems have shown the potential for becoming a cost-effective pavement alternative for highways with high and heavy traffic volumes, especially in Europe. This study investigated the design and performance of composite pavement structures composed of a flexible layer (top-most layer) over a rigid base. The report compiles (1) a literature review of composite pavement systems in the U.S. and worldwide; (2) an evaluation of the state-of-the-practice in the U.S. obtained using a survey; (3) an investigation of technical aspects of various alternative composite pavement systems designed using available methodologies and mechanistic-empirical pavement distress models (fatigue, rutting, and reflective cracking); and (4) a preliminary life cycle cost analysis (LCCA) to study the feasibility of the most promising composite pavement systems. Composite pavements, when compared to traditional flexible or rigid pavements, have the potential to become a cost-effective alternative because they may provide better levels of performance, both structurally and functionally, than the traditional flexible and rigid pavement designs. Therefore, they can be viable options for high volume traffic corridors. Countries, such as the U.K. and Spain, which have used composite pavement systems in their main road networks, have reported positive experiences in terms of functional and structural performance. Composite pavement structures can provide long-life pavements that offer good serviceability levels and rapid, cost-effective maintenance operations, which are highly desired, especially for high-volume, high-priority corridors. Composite pavements mitigate various structural and functional problems that typical flexible or rigid pavements tend to present, such as hot-mix asphalt (HMA) fatigue cracking, subgrade rutting, portland cement concrete (PCC) erosion, and PCC loss of friction, among others. At the same time, though, composite systems are potentially more prone to other distresses, such as reflective cracking and rutting within the HMA layer. Premium HMA surfaces and/or reflective cracking mitigation techniques may be required to mitigate these potential problems. At the economic level, the results of the deterministic agency-cost LCCA suggest that the use of a composite pavement with a cement-treated base (CTB) results in a cost-effective alternative for a typical interstate traffic scenario. Alternatively, a composite pavement with a continuously reinforced concrete pavement (CRCP) base may become more cost-effective for very high volumes of traffic. Further, in addition to savings in agency cost, road user cost savings could also be important, especially for the HMA over CRCP composite pavement option because it would not require any lengthy rehabilitation actions, as is the case for the typical flexible and rigid pavements.
Author: American Association of State Highway and Transportation Officials Publisher: 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.
Author: Martin P. Wanielista Publisher: John Wiley & Sons ISBN: 9780471571353 Category : Technology & Engineering Languages : en Pages : 618
Book Description
Designed for both students and practicing professionals, it addresses critical issues of water quality, focusing on the illustration and application of both hydrologic and economic water management techniques. Stresses applications using worked examples, case studies and problems. Software is to assist in solving more complex problems and to apply demonstrated techniques. The software discussed in the book is available for download at http://www.cee.ucf.edu/software/swm1993.zip
Author: David F. McCarthy Publisher: ISBN: 9781292039398 Category : Foundations Languages : en Pages : 848
Book Description
For courses in Soil Mechanics and Foundations. Essentials of Soil Mechanics and Foundations: Basic Geotechnics, Seventh Edition, provides a clear, detailed presentation of soil mechanics: the background and basics, the engineering properties and behavior of soil deposits, and the application of soil mechanics theories. Appropriate for soil mechanics courses in engineering, architectural and construction-related programs, this new edition features a separate chapter on earthquakes, a more logical organization, and new material relating to pile foundations design and construction and soil permeability. It's rich applications, well-illustrated examples, end-of-chapter problems and detailed explanations make it an excellent reference for students, practicing engineers, architects, geologists, environmental specialists and more.
Author: Thomas Auer Publisher: ISBN: 9789492516299 Category : Languages : en Pages :
Book Description
The PowerSkin Conference aims to address the role of building skinsto accomplish a carbon neutral building stock. Topics such as buildingoperation, embodied energy, energy generation and storage in context offacades, structure and environment are considered."
Author: Ali Vedavarz Publisher: Industrial Press Inc. ISBN: Category : House & Home Languages : en Pages : 1016
Book Description
A comprehensive handbook and essential reference, providing instant access to all the data, calculations, and equations needed for modern HVAC design.
Author: Wenting Liu
Author: Wenting Liu
Author: Kasthurirangan Gopalakrishnan
Author: 
Author: Gerardo W. Flintsch
Author: American Association of State Highway and Transportation Officials
Author: Martin P. Wanielista
Author: David F. McCarthy
Author: Paul D. Tennis
Author: Thomas Auer
Author: Ali Vedavarz