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Title:

Risk-Based Quantification of Loss of Pavement Life of Hot-Mix Asphalt Pavements due to Use of Moisture-Susceptible Mixes

Accession Number:

01587326

Record Type:

Component

Abstract:

Hot Mix Asphalt (HMA) is the most commonly used manufactured construction material for roadway and airport pavements. Moisture damage of HMA leads to premature deterioration of pavements and results in a significant amount of spending for road repair and rehabilitation. A significant improvement in pavement life can be achieved if moisture susceptible mixes could be screened during mix design. In spite of significant advancements in the understanding of damage mechanism and fundamental characterization of moisture susceptibility of mixes, there exists a need for a unified approach that combines a test, a conditioning process, and analysis method that can help identify moisture susceptible mixes and quantify the risk of using one, on a regular basis during mix design. This paper presents such an approach, combining a nondestructive test, the Ultrasonic Pulse Velocity method, the moisture induced stress tester (MIST) and a Monte Carlo based analysis method. Tests were carried out using two mixes containing moisture susceptible and non-moisture susceptible aggregates. Pre and post MIST conditioning tests were carried out with ultrasonic pulse velocity method, and the results were utilized in Monte Carlo simulations estimating the pavements lives (and life cycle cost) for these mixes. The results show that the Ultrasonic Pulse Velocity test is capable of detecting changes in moduli due to moisture damage in HMA samples, the results of modulus tests could be used, along with Monte Carlo analysis to predict distribution of fatigue life before and after moisture damage, and that a significant loss in fatigue life can be expected for mixes with poor quality aggregates due to moisture damage. A framework of testing and analyses is suggested for regular use for proper detection and quantification of moisture damage in HMA.

Supplemental Notes:

This paper was sponsored by TRB committee AFK40 Standing Committee on Characteristics of Asphalt-Aggregate Combinations to Meet Surface Requirements. Alternate title: Risk Based Quantification of Loss of Pavement Life of Hot Mix Asphalt (HMA) Pavements Due to the Use of Moisture Susceptible Mixes.

Monograph Accession #:

01584066

Report/Paper Numbers:

16-2625

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Mallick, Rajib B
Tao, Mingjiang
Worsman, Ryan
Daniel, Jo Sias
McCarthy, Leslie Myers

Pagination:

17p

Publication Date:

2016

Conference:

Transportation Research Board 95th Annual Meeting

Location: Washington DC, United States
Date: 2016-1-10 to 2016-1-14
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Identifier Terms:

Moisture Induced Stress Tester

Subject Areas:

Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials

Source Data:

Transportation Research Board Annual Meeting 2016 Paper #16-2625

Files:

TRIS, TRB, ATRI

Created Date:

Jan 12 2016 5:09PM