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Title:

Effect of RAP Concrete Ductility on Critical Stress Analysis for Rigid Pavements

Accession Number:

01628589

Record Type:

Component

Abstract:

The use of reclaimed asphalt pavement (RAP) material in concrete pavement has been identified to greatly improve the toughness and energy absorbing capacity of Portland Cement Concrete (PCC). However, most finite element (FE) models characterize concrete material as a linear elastic material even though RAP concrete behavior actually exhibits non-linear stress-strain behavior. The current lack of material property model that enables to appropriately characterize the RAP concrete is probably the greatest shortcoming to accurately predict the change in structural response of PCC pavement including RAP material. In this study, a non-linear 3-D FE model in consideration of the actual stress-strain behavior of the RAP concrete was developed to evaluate how the non-linear stress-strain behavior affects the prediction results of the stresses in ductile concrete as compared to typical linear elastic model. The results indicated that the linear elastic model provides overestimated maximum concrete tensile stresses as compared with those predicted using actual stress-strain model. Consequently, this overestimated result will lead to underestimated potential performance of the concrete pavement containing RAP. Therefore, a non-linear model incorporating with the actual stress-strain response characteristics should more accurately predict the structural responses of the RAP concrete pavement in lieu of the typical material property model that assumes the concrete as a linear elastic material.

Supplemental Notes:

This paper was sponsored by TRB committee AFN20 Standing Committee on Properties of Concrete.

Monograph Accession #:

01618707

Report/Paper Numbers:

17-01351

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Kim, Kukjoo
Chun, Sanghyun
Park, Bongsuk
Tia, Mang
Bergin, Michael J

Pagination:

14p

Publication Date:

2017

Conference:

Transportation Research Board 96th Annual Meeting

Location: Washington DC, United States
Date: 2017-1-8 to 2017-1-12
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Subject Areas:

Highways; Materials; Pavements

Source Data:

Transportation Research Board Annual Meeting 2017 Paper #17-01351

Files:

TRIS, TRB, ATRI

Created Date:

Dec 8 2016 10:26AM