Long-Term Degradation and Strength Characteristics of Wisconsin Virgin Base Aggregates under HMA Pavements [Research Brief]

Titi, Hani H.; Wisconsin Highway Research Program

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Long-Term Degradation and Strength Characteristics of Wisconsin Virgin Base Aggregates under HMA Pavements [Research Brief]

2019-04-01
By Titi, Hani H.

[PDF-209.55 KB]

English

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Details:

Creators:

Titi, Hani H.
Corporate Creators:

Wisconsin Highway Research Program
Corporate Contributors:

Wisconsin. Dept. of Transportation.
Subject/TRT Terms:

[+]

Aggregate Base Layer Aggregates Base Construction Specifications Base Course (Pavements) Calibration DARWin-ME Degradation Failures Density-based Specifications Falling Weight Deflectometer FWD Geotechnics HMA Hot Mix Asphalt Light Weight Deflectometer LWD Mechanistic Design Modulus-based Specifications Pavement Pavement Design QA QC Quality Assurance Quality Control Software Structural Design WHRP Wisconsin Department Of Transportation Wisconsin Highway Research Program WisDOT
Publication/ Report Number:

0092-15-06
Resource Type:

Brief
Geographical Coverage:

United States
Corporate Publisher:

Wisconsin. Dept. of Transportation
Abstract:

Aggregate base course layers serve an important role in hot mix asphalt (HMA) pavement stability and performance by providing structural support to the surface layer and by dissipating traffic loads and transferring them to the underlying pavement layers or subgrade. Poor base layer performance due to long-term degradation can cause serious pavement distress such as fatigue cracking, rutting, corrugation, depression and frost heave. The Wisconsin Department of Transportation (WisDOT) has hypothesized that base layer aggregate degradation may be caused by: individual aggregate chemical and physical breakdown; freezethaw action; and infiltration of subgrade materials. WisDOT is deploying AASHTOWare Pavement ME Design software in which the base layer aggregate characteristics significantly influence the pavement thickness design and pavement performance. The purpose of this research was to investigate longterm performance of virgin aggregate bases in HMA pavements; investigate and document strength reductions over time; and evaluate the likely causes of both. This information will help local calibration of the AASHTOWare Pavement ME Design software
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:655ab2c73fecc8079a5ea3ee8511ae925b18bbf3b9f42b2fe315fc43d60b502d
Download URL:

https://rosap.ntl.bts.gov/view/dot/40780/dot_40780_DS1.pdf
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No Additional Files

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Long-Term Degradation and Strength Characteristics of Wisconsin Virgin Base Aggregates under HMA Pavements [Research Brief]

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