Geo-Congress 2020
Particle Breakage and Fines Generation of Recycled Concrete Aggregates Subjected to Compaction
Publication: Geo-Congress 2020: Geo-Systems, Sustainability, Geoenvironmental Engineering, and Unsaturated Soil Mechanics (GSP 319)
ABSTRACT
In this study, the particle breakage and fines generation of due to compaction were investigated for recycled concrete aggregates (RCA). RCA samples containing two common aggregate types, i.e., sedimentary versus igneous, were selected and compacted with a modified Proctor compaction procedure. Sieve analyses pre- and post-compaction showed that both types of RCA were more susceptible to particle breakage when compared to virgin dolomite aggregates. In particular, the sedimentary RCA sample containing dolomite aggregates exhibited significant levels of breakage and fines generation. Degradation of such RCA materials due to compaction may lead to reduced drainage performance and heightened clogging potential, and therefore should be evaluated before they are used as fill materials.
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Information & Authors
Information
Published In
Geo-Congress 2020: Geo-Systems, Sustainability, Geoenvironmental Engineering, and Unsaturated Soil Mechanics (GSP 319)
Pages: 124 - 130
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): 978-0-7844-8282-7
Copyright
© 2020 American Society of Civil Engineers.
History
Published online: Feb 21, 2020
Published in print: Feb 21, 2020
ASCE Technical Topics:
- Aggregates
- Chemical degradation
- Chemical processes
- Chemistry
- Compaction (material)
- Concrete
- Engineering materials (by type)
- Environmental engineering
- Geotechnical engineering
- Infrastructure
- Materials characterization
- Materials engineering
- Particles
- Pavements
- Recycling
- River engineering
- Sediment
- Transportation engineering
- Water and water resources
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