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Title:

Top-Down Cracking of Hot-Mix Asphalt Layers: Models for Initiation and Propagation
Cover of Top-Down Cracking of Hot-Mix Asphalt Layers: Models for Initiation and Propagation

Accession Number:

01174671

Record Type:

Monograph

Availability:

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Order URL: http://worldcat.org/isbn/9780309430135

Abstract:

The research focused on: 1) Finalizing the two primary model components [i.e., a viscoelastic continuum damage (VECD) model for crack initiation and a hot mix asphalt fracture mechanics (HMA-FM) model for crack propagation], involving development and integration of sub-models that are relevant to dominant top-down cracking mechanisms into each model component; 2) Verifying the reasonableness of the two enhanced primary model components (i.e., the VECD-based model and the HMA-FM-based model); and 3) Developing for and integrating with the HMA-FM-based crack propagation model a simplified fracture energy-based crack initiation model to illustrate the potential of a completed system and to help formulate a plan for integrating, calibrating, and validating the two enhanced primary model components. In summary, the work performed clearly indicates that the VECD-based model and the HMA-FM-based model developed and evaluated in this project can form the basis for a top-down cracking model suitable for use in the Mechanistic-Empirical Pavement Design Guide (MEPDG). Furthermore, the component models can form the basis for an improved performance model to predict multiple cracking distresses simultaneously, including top-down cracking, bottom-up cracking, and thermal cracking. The project also identified and recommended research efforts to develop calibrated/validated top-down cracking performance models for use in the MEPDG.

Report/Paper Numbers:

NCHRP Project 1-42A

Language:

English

Authors:

Roque, Reynaldo
Zou, Jian
Kim, Y Richard
Baek, Cheolmin
Thirunavukkarasu, Senganal
Underwood, B Shane
Guddati, Murthy N

Pagination:

286p

Publication Date:

2010

Serial:

NCHRP Web-Only Document

Issue Number: 162
Publisher: Transportation Research Board

ISBN:

9780309430135

Edition:

Contractor Final Report

Media Type:

Web

Features:

Appendices (3) ; Figures; References; Tables

Subject Areas:

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

Files:

TRIS, TRB

Created Date:

Oct 4 2010 1:32PM