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Title:

Correlation of Asphalt Concrete Layer Moduli Determined from Laboratory and Nondestructive Field Tests

Accession Number:

01333287

Record Type:

Component

Abstract:

Nondestructive devices have been used for the assessment of pavement layer moduli. The falling weigh deflectometer (FWD) has been the most widely adopted along with various backcalucation methodologies to come up with layer moduli. Recently, the portable seismic pavement analyzer (PSPA) is used for the evaluation of the seismic stiffness of a pavement structure. The PSPA provides a direct measurement of seismic moduli at a higher load frequency level than typical traffic load frequency. In this paper, efforts were made to compare asphalt concrete (AC) layer modulus that is determined from laboratory dynamic modulus test and field measurements using FWD and PSPA at corresponding load frequency and temperature. The results exhibited favorable correlation between the AC moduli estimated. The methodology was also proposed to obtain a composite modulus from individual layer properties of AC layer for the purpose of comparison with field based determined modulus in case where the dynamic modulus test is not applicable when thinner AC layer encounters. From this, the procedure to obtain composite corrected PSPA modulus was evaluated using Odemark's assumption along with individual master curve generation using temperature viscosity relationship and volumetric properties. The comparison showed a promising correlation between the corrected PSPA modulus based on the proposed procedure and FWD backcalculated AC modulus even though there still needs to enhance the relationship particularly in thin AC layer where the predicted deflection basin is not sensitive to the backcalculated AC modulus.

Monograph Accession #:

01329018

Report/Paper Numbers:

11-3673

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Oh, Jeong Ho
Fernando, Emmanuel G
Lee, Sang Ick
Holzschuher III, Charles R

Pagination:

24p

Publication Date:

2011

Conference:

Transportation Research Board 90th Annual Meeting

Location: Washington DC, United States
Date: 2011-1-23 to 2011-1-27
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures; References (5) ; Tables (2)

Subject Areas:

Highways; Maintenance and Preservation; Pavements; I61: Equipment and Maintenance Methods

Source Data:

Transportation Research Board Annual Meeting 2011 Paper #11-3673

Files:

TRIS, TRB

Created Date:

Feb 17 2011 6:36PM