Assessment of the compression characteristics and coefficient of lateral earth pressure of aggregate-expanded polystyrene beads composite fill-backfill using large oedometer experiments
| Autor: | Kostas Senetakis, Meghdad Payan, Shaghayegh Kazempour, Hadi Ahmadi, Reza Jamshidi Chenari |
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| Rok vydání: | 2021 |
| Předmět: |
Aggregate (composite)
Materials science Composite number Building and Construction Compression (physics) Oedometer test chemistry.chemical_compound Volume (thermodynamics) chemistry Lateral earth pressure Compressibility General Materials Science Polystyrene Composite material Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 302:124145 |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2021.124145 |
| Popis: | We examined the compression behaviour of aggregate-expanded polystyrene (EPS) granular composites using large-size oedometer tests measuring directly the coefficient of lateral earth pressure at rest ( K 0 ). The results showed that increasing the aggregate particles size led to a decrease of K 0 and the coefficient of volume compressibility, in pure aggregates and aggregate-EPS composites with rigid particles of d 50 2 m m . Increased angularity and coefficient of uniformity were observed to display competitive mechanisms in controlling K 0 . The increase of EPS content led to a transition from a behaviour dominated by aggregate contacts to aggregate-EPS and EPS-EPS major contributions in the load transfer mechanism. |
| Databáze: | OpenAIRE |
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