Work Item
ASTM WK71466

New Test Method for Determination of Rutting Tolerance Index of Asphalt Mixture Using the Rapid Rutting Test

1. Scope

The scope of the Committee shall be the promotion of knowledge, stimulation of research, and the development of standards pertaining to asphalt materials used in pavements, asphalt surface treatments, aggregates used in asphalt mixtures, graded aggregate used in bases or subbases, and to other materials, products, systems, and services incidental to all types of highway and transportation construction and maintenance. The types of standards developed include, but are not limited to, specifications, test methods, practices, guides, and terminology.

The work of this Committee will be coordinated with other ASTM committees and other organizations having mutual interest.
The activities shall be coordinated with other ASTM Committees when necessary.
The area of interest of the Committee is materials used in the construction and maintenance of highways, and other transportation construction.

Keywords

asphalt mixture rutting resistance; rapid rutting test; rutting tolerance index

Rationale

Many state Departments of Transportation (DOTs) are in the process of implementing balanced mix design method to improve asphalt mix performance with both rutting and cracking tests. There are many rutting tests developed in the past, but the two most often used rutting tests are the Hamburg Wheel Tracking Test and the Asphalt Pavement Analyzer (APA). However, neither of them is designed for quality control and quality assurance (QC/QA) testing at asphalt plants. Thus, there is an urgent need for a rapid shear rutting test for QC/QA so that the mix quality could be similar to what was designed in the laboratory. This standard introduces the rapid shear rutting test (RSRT). The RSRT has the following features: (1) simplicity: no instrumentation, coring, cutting, gluing, or notching samples; (2) efficiency: test completion within 1 min; (3) practicality: workable for both laboratory molded specimens and field cores; no sophisticated training needed for running the test; (4) low cost: use of existing test equipment with minimum cost; (5) repeatability: great repeatability and low coefficient of variation (COV) (10 % with three replicates); (6) sensitivity: sensitive to asphalt mix composition (aggregate, binder, recycled materials), air voids, and aging; (7) nanifesting rutting mechanism: RSRT measures shear stress resistance of asphalt mixes; and (8) good correlation with field rutting performance: the shear-resistance-based rutting parameter has good correlation with measured field-rutting performance. The rapidity, simplicity, and other features make the RSRT a great fit for field QC/QA testing.

The title and scope are in draft form and are under development within this ASTM Committee.

Details

Developed by Subcommittee: D04.26

Committee: D04

Staff Manager: Ashley Wiand

Work Item Status

Date Initiated: 01-17-2020

Technical Contact: Rasool Nemati

Item: 001

Ballot: D04 (20-05)

Status: Will Reballot Item

Item: 004

Ballot: D04 (22-01)

Status: Negative Votes Need Resolution