Flexible Pavement Design Example available in Appendix H AASHTO. A.4.5 Core Samples from Hot Mix Asphalt and PCCP.582.
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An example to illustrate how climatic considerations can be incorporated into the AASHTO design is presented. Utilizing a 24.3 Growth Factor from Pavement Design Workshop example for all design. 1.3 Overview of AASHTO Pavement Mechanistic-Empirical Design Procedure. By knowing the asphalt grade and the mix properties, the weighted, effective asphalt‐layer coefficient is calculated. Higher SN means stronger pavement, thus the impact of traffic on pavement deteriorations is less. So, we must check if the final SN 3 is similar to the assumed SN. A rational method is proposed to select the appropriate asphalt grade to minimize both low‐temperature cracking and rut depth. The goal of this research project was the development of the Texas Flexible Pavement Database (TFPD) to serve as a reference database comprising design. In the AASHTO flexible pavement design, traffic is considered in terms of ESAL for the terminal PSI (Table 20.13 for p t 2.5.) We must assume the structural number of the pavement.
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The impact of the ambient temperature on the asphalt‐concrete layer is evaluated by considering the interactive result of temperature and fatigue damage the concept of weighted effective dynamic modulus is thus used. Through a sensitivity analysis of the new AASHTO equation, the change in the structural number required to offset a reduction in the subgrade resilient modulus due to an increase in moisture content is evaluated an adjusted structural number is thus calculated. Climatic factors considered include seasonal changes in the subgrade moisture content and the annual variations in the ambient temperature. It can also be used to perform loss of support analysis and load transfer efficiency (LTE) calculations.This research is undertaken to study and assess carefully the effect of climatic factors on the new American Association of State Highway and Transportation Officials (AASHTO) design for flexible pavements. example, with a structural coefficient of 0.44 for an asphalt layer and a structural. The tool is capable of analyzing raw deflection data files obtained from Falling Weight Deflectometer (FWD) testing devices, backcalculating in-place elastic layer moduli for flexible and rigid pavements and generating inputs for performing rehabilitation design using Pavement ME. Work Plan for Evaluating the AASHTO Flexible Pavement Design.
FLEXIBLE PAVEMENT DESIGN AASHTO EXAMPLE SOFTWARE
The Pavement ME Deflection Data Analysis and Backcalculation Tools is a standalone software program that can be used to generate backcalculation inputs to the AASHTO Pavement ME Design software for rehabilitation design. ME Design is a production-ready software tool to support the day-to-day pavement design functions of public and private pavement engineers.
FLEXIBLE PAVEMENT DESIGN AASHTO EXAMPLE MANUAL
ME Design supports AASHTO"s Mechanistic-Empirical Pavement Design Guide, Interim Edition: A Manual of Practice. ***ĪASHTOWare Pavement ME Design is the next generation of AASHTOWare® pavement design software, which builds upon the mechanistic-empirical pavement design guide, and expands and improves the features in the accompanying prototype computational software. Work can be verified by using the Flexible Pavement Structural Design Utility.
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***AASHTOWare Backcalculation Tools v1.1.6 is now available. Design a new flexible pavement for a major interstate highway using the following conditions (four lanes each direction): Solution By looking at several different design periods and reliability levels this example gives an idea of the relative influence of these inputs. with the 1993 AASHTO Design Guide approach by working design examples with the PaveXpress. ***AASHTOWare Pavement ME Design v2.6.2.1 is now available. Flexible Pavement Design and Rehabilitation - NEW (81302017).