LTAP X520 - Aggregates for Asphalt Mixtures for Local Agencies and Tribes (FHWA)
Description
Aggregates have many varied uses in transportation systems. The desirable properties and appropriate specifications are typically governed by the end use of the materials. In other words, aggregates that are well suited to a stabilized permeable base material may not be suitable for use in a PCC mixture.
Aggregates play a primary role in the ability of asphalt concrete to carry traffic loads. The interaction between the aggregate particles is responsible, in large part, for the strength and deformation characteristics of the asphalt.
This course will relate the physical properties of aggregates to the performance of asphalt mixtures. It will also cover the most important coarse and fine aggregate properties for asphalt mixtures and the tests used to determine those properties. Lastly, the role of aggregates in providing skid resistance on asphalt concrete pavements will be explained.
Who Should Take This Course
This course is intended for a variety of positions within local agencies and tribal governments, with an emphasis on those involved in the construction, maintenance, and testing process for highways and structures.
Accessing the Course
This training is offered via the course management system Canvas. Upon completing your online registration, you will receive an email confirmation. To access the course, please visit Canvas and login with your University of Minnesota internet ID and password. Once you have been enrolled, your course will appear on your Canvas dashboard.
If for any reason you do not have access to the course after enrolling, please contact Natalie Niskanen at niskanen@umn.edu for assistance.
Credit
Students will earn .025 Roads Scholar Program Maintenance Certificate credits and 0.25 Continuing Education Credit.
To the best of our knowledge, this course meets the continuing education requirements for 1.0 PDHs as outlined in Minnesota Statute 326.107. More information concerning continuing education for professionals is available on the Minnesota Board of AELSLAGID website.
Outline
Objectives
Learning Outcomes
- Relate the physical properties of aggregates to the performance of asphalt mixtures
- List the most important coarse aggregate properties for asphalt mixtures and the tests used to determine those properties
- List the most important fine aggregate properties for asphalt mixtures and the tests used to determine those properties
- Explain the role of aggregates in providing skid resistance on asphalt concrete pavements