An Experimental Plan for Validation of an Endurance Limit for HMA Pavements (2009) / Chapter Skim
Currently Skimming:
Pages 1-12
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 1... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements 1. INTRODUCTION AND RESEARCH APPROACH 1.1 Introduction This report documents the research completed in National Cooperative Highway Research Program (NCHRP)
|
From page 2... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements empirical pavement design. To be successful, the research plan must address the following: 1.
|
From page 3... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements 1.3.2 Task 2. Conduct Facilitated Workshop.
|
From page 4... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements Table 1. HMA Endurance Limit Workshop Invitees and Attendees.
|
From page 5... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements AGENDA Item Questions to be answered Sponsor Welcome, Facilitator Opening, Introductions Personal Expectations What are your expectations for this session? Briefing 1 Fatigue in the MEDPG How are fatigue and the endurance limit addressed in the MEPDG?
|
From page 6... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements 6 1.3.3 Task 3. Identify Data Requirements A major part of Task 3 was the development of a framework for designing pavements to resist bottom initiated fatigue cracking that considers the effects of an endurance limit.
|
From page 7... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements Table 2. Summary of Existing Pavement Analysis Approaches Considered.
|
From page 8... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements Five experiments were identified to full develop the design procedure incorporating an HMA endurance limit. Table 3 summarizes the laboratory experiments that are needed.
|
From page 9... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements for determining allowable strain limits that result in complete healing will be developed in Experiment 4. This experiment will include testing and analysis of selected mixtures from Experiment 1 and mixtures used in the endurance limit testing completed in NCHRP Project 938.
|
From page 10... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements The allowable strain limit design procedure will be calibrated and validated using in-service pavement sections. It is important to recognize that the allowable strain limit design procedure is not intended to be a tool for predicting the extent of bottom initiated cracking with time and traffic like the MEPDG fatigue model.
|
From page 11... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements advantage of jackknifing is the goodness of fit statistics are based on predictions of measurements that are not included in the calibration. They are, therefore, better estimates of the accuracy of future predictions than goodness of fit statistics based on calibration using the full data set.
|
From page 12... ...
NCHRP Web-Only Document 134: An Experimental Plan for Validation of an Endurance Limit for HMA Pavements 1.3.6 Task 6. Prepare Final Report.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.