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Title:

Effect of Temperature on Resilient Modulus of Recycled Unbound Aggregates
Cover of Effect of Temperature on Resilient Modulus of Recycled Unbound Aggregates

Accession Number:

01514820

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

The effect of temperature on plastic strain and resilient modulus (MR) of different sources of recycled asphalt pavements (RAP) and recycled concrete aggregates (RCA) was evaluated from the results of laboratory temperature-controlled MR tests and field falling weight deflectometer (FWD) tests. Temperature rise increases plastic strain and reduces MR of RAP under cyclic loads but has negligible effect on plastic strain and MR of RCA. Analysis of field test results showed that the effect of temperature on MR of RAP is best described by an exponential function. Freeze-thaw cycles steadily reduce the MR of RAP; however, long-term freeze-thaw cycles increase the MR of RCA. No concern is expected about the effect of temperature on performance of RCA. However, temperature effects should be considered in design of roadways constructed with RAP. Thermal preloading reduces plastic strain and increases the MR of the compacted RAP. Based on the results, construction of pavement system made with RAP is recommended during warm seasons to induce thermal preloading.

Supplemental Notes:

This paper was sponsored by TRB committee AFP70 Mineral Aggregates.

Monograph Accession #:

01503729

Report/Paper Numbers:

14-3139

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Soleimanbeigi, Ali
Shedivy, Ryan F
Tinjum, James M
Edil, Tuncer B

Pagination:

15p

Publication Date:

2014

Conference:

Transportation Research Board 93rd Annual Meeting

Location: Washington DC
Date: 2014-1-12 to 2014-1-16
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Plastic strain

Subject Areas:

Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I36: Aggregates

Source Data:

Transportation Research Board Annual Meeting 2014 Paper #14-3139

Files:

PRP, TRIS, TRB, ATRI

Created Date:

Jan 27 2014 3:05PM