Behavior of Stabilized Aggregate Bases Subjected to Cyclic Loading and Wet-Dry Cycles
Publication: Advances in Pavement Engineering
Abstract
A laboratory study was undertaken to investigate the effect of wet-dry (W-D) cycles on aggregate bases, namely, Meridian (M), Richard Spur (RS), and Sawyer (S), stabilized with cement kiln dust (CKD), class C fly ash (CFA), and fluidized bed ash (FBA). Cylindrical specimens were molded, cured, and subjected to W-D cycles prior to testing for resilient modulus (Mr). It was found that the Mr values for most of specimens decreased as W-D cycles increased. Sawyer aggregates stabilized with CKD, however, exhibited an increase with W-D cycles up to 8, beyond which a decrease in Mr occurred. It is believed that such a decrease/increase in Mr values may be attributed to the deceleration/acceleration of pozzolanic reactions. Laboratory observations revealed visual degradation of only Sawyer specimens stabilized with fluidized bed ash after 16 W-D cycles; no Mr tests were performed on the degraded specimens.
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Copyright
© 2005 American Society of Civil Engineers.
History
Published online: May 7, 2012
ASCE Technical Topics:
- Aggregates
- Ashes
- Bed loads
- Bed materials
- Construction materials
- Continuum mechanics
- Cyclic loads
- Dynamic loads
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Environmental engineering
- Fluidized bed technology
- Fly ash
- Infrastructure
- Laboratory tests
- Materials engineering
- Pavements
- River and stream beds
- River engineering
- Rivers and streams
- Solid mechanics
- Structural dynamics
- Tests (by type)
- Transportation engineering
- Waste management
- Waste treatment
- Water and water resources
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