Geo-Congress 2020
Particle Size Characteristics of Unconventionally Large Aggregate Particles by Stereophotography
Publication: Geo-Congress 2020: Modeling, Geomaterials, and Site Characterization (GSP 317)
ABSTRACT
In recent years, the use of unconventionally large aggregates for subbase layer construction has become popular. Such aggregates generally require less crushing than conventional size aggregates; therefore, the use of such aggregates can help to achieve energy savings and improved pavement sustainability. The engineering properties of aggregates greatly depend on the particle size distribution; therefore, size characteristics of aggregate particles must be well known. Sieve analysis may not be practical for unconventionally large aggregates due to the limitations of the existing test apparatus. In this study, stereophotography, a digital imaging technique, was evaluated as an alternative to sieve analysis to determine the size characteristics of aggregate particles. Sieve analysis and stereophotography were performed on an unconventionally large aggregate material. Their results were compared and it was concluded that the digital imaging technique was a very useful approach for size characterization of aggregate particles.
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ACKNOWLEDGMENT
This study is funded by the National Road Research Alliance (NRRA), a multi-state pooled fund. The authors would like to thank John Siekmeier and other MnDOT staff to provide the large crushed granite used in this study. All the information presented herein are those of the authors and do not represent the views of the sponsor and NRRA-member state DOTs.
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Information & Authors
Information
Published In
Geo-Congress 2020: Modeling, Geomaterials, and Site Characterization (GSP 317)
Pages: 183 - 191
Editors: James P. Hambleton, Ph.D., Northwestern University, Roman Makhnenko, Ph.D., University of Illinois at Urbana-Champaign, and Aaron S. Budge, Ph.D., Minnesota State University, Mankato
ISBN (Online): 978-0-7844-8280-3
Copyright
© 2020 American Society of Civil Engineers.
History
Published online: Feb 21, 2020
ASCE Technical Topics:
- Aggregates
- Business management
- Computer vision and image processing
- Construction engineering
- Construction management
- Earth materials
- Energy efficiency
- Energy engineering
- Engineering fundamentals
- Geomaterials
- Geomechanics
- Geotechnical engineering
- Infrastructure
- Methodology (by type)
- Particle size distribution
- Pavements
- Practice and Profession
- Soil mechanics
- Soil properties
- Sustainable development
- Transportation engineering
Authors
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