![]() IRC:SP-76-2008, Tentative guidelines for conventional, thin and ultra-thin white-topping. In: Design, analysis, and asphalt material characterization for road and airfield pavements GSP, 246. ![]() Jinwoo A, BooHyun N, Kim J (2014) Numerical analysis of reflective cracking in an asphalt concrete overlay over a flexible pavement. Project Report, National Institute of Technology Rourkela Singh SG (2014) Overlay of flexible pavements: an ANN approach. ![]() The results show that bonding condition, temperature, and thickness of the overlay are critical for the design of rigid overlays. Validation of the finite element (FE) analysis results was carried out using Bradbury’s equation for temperature stress and Ioannides modified solution of Westergaard’s closed-form formulas for response to wheel loading. Further, parametric studies were carried out on varying thickness of slabs (75, 100, 260, 280, and 300 mm) to identify the significant design parameters of the pavement model. The response of the pavement was computed in terms of surface deflections and stresses at interior, corner, and edge, along with the effect of temperature, dowel bars, and slab thickness which were considered as design parameters. In the present work, white topping is considered as the concrete overlay over 150 mm thick hot mix asphalt (HMA) pavement and has been modeled and analyzed by using ANSYS software. Use of this design tool implies acceptance of the terms of use and understanding of the assumptions / limitations of the research on which this tool is based.Concrete overlays offer enormous potential as a rehabilitation strategy for Indian roads, whereas white topping offers a new advanced technique which will extend the life of a deteriorated existing bituminous pavement. American Concrete Pavement Association, its Officers, Board of Directors and Staff are absolved of any responsibility for any decisions made as a result of your use. ![]() The user accepts ALL responsibility for decisions made as a result of the use of this design tool. For more details on the design and construction of concrete overlays, see the National Concrete Pavement Technology Center’s (CP Tech Center’s) “Guide to Concrete Overlays,” available in PDF format here or printed format here, the National Concrete Overlay Explorer, or use the contact button below to contact the ACPA or your local ACPA Chapter or State Paving Association. Thus, this tool should be treated as a state-of-the-art interim design procedure for BCOA. Research to better define the impact of fibers on thin concrete overlays also is ongoing the results of such research will be included in future updates of this tool. For example, research into typical effective temperature gradients and time at the effective temperature gradient for different locations in the United States is currently being conducted and will be incorporated into this web app upon its release. While this thickness designer is based on the latest in bonded concrete overlay on asphalt (BCOA) design methodologies, research into this topic is still ongoing. Designers should understand the assumptions/limitations of the research on which this tool is based and also be knowledgeable about the various types of concrete overlay offerings and design/construction details of each type. Necessarily reflect the official views or policies of ICT, IDOT, or FHWA, and this application does not constitute a standard, specification, or regulation. The web application reflects the views of the ACPA, who is responsibleįor the facts and accuracy of the data presented within it. (ICT), the Illinois Department of Transportation (IDOT), and the Federal Highway Administration ![]() Is based primarily on the results of FHWA-ICT-08-016, " Design and Concrete Material Requirements for Ultra-Thin Whitetopping", a research project conducted in cooperation with the Illinois Center for Transportation at the University of Illinois This bonded concrete overlay on asphalt (BCOA) thickness design web application ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |