Using the Micro-Deval Test to Assess Alaska Aggregates

Abstract and project information last updated: 11 July 2013. Project updates are dated below.

A man in jeans and a white t-shirt, wearing safety goggles, holds a steel cylinder near some blue testing equipment in a laboratory.

Credit: Ruiqiang Song

Research assistant Lin Li takes samples for data analysis in the Duckering Building Room 123 as part of a project examining a new aggregate testing method, the Micro-Deval test, which is a wet test of how aggregates degrade when tumbling in a rotating steel drum with water and steel balls.

AUTC
Project
Number
410009
Principal
Investigator
Juanyu (Jenny) Liu (UAF)
jliu6@alaska.edu
Funding
Agency

US Department of Transportation (RITA)

Alaska Department of Transportation & Public Facilities

Project
Budget
100000
Start
Date
1 July 2010
Estimated
End Date
1 June 2012

Abstract

Choosing the right material is half the battle in building roads for Alaska. The extreme conditions typical to cold regions require a durable, abrasion resistant and freeze-thaw resistant aggregate. Recently the state has been wondering exactly how effective and accurate its selection methods are. Currently there is limited information regarding the Alaska Testing Method 313 (sometimes known as the Washington degradation test) used by ADOT&PF to test abrasion and degradation value. This project will examine a new testing method, the Micro-Deval test — a wet test of how aggregates degrade when tumbling in a rotating steel drum with water and steel balls — to determine whether it can provide safe and cost-effective aggregate testing with reproducible results that correlate with field performance. The Micro-Deval test is easy, safe, and less costly to perform than traditional testing methods. It is suitable for smaller equipment, requires smaller sample quantities and uses a simple procedure. This study will provide data and recommendations on the suitability of the
Micro-Deval test as a as a rapid, simple, repeatable and inexpensive technique for assessing the durability of Alaska aggregates.

Final Report

Use of the Micro-Deval Test for Assessing Alaska Aggregates
3 Mar 2014

Use of the Micro-Deval Test for Assessing Alaska Aggregates
Juanyu Liu, Ph.D., P.E. Anthony Mullin Jason Rein
410009.Liu_.MicroDeval.FINAL_.pdf

Related Project Activity

3 March 2014

Use of the Micro-Deval Test for Assessing Alaska Aggregates

by

410009.Liu.MicroDeval.FINAL