Assessment of the compression characteristics and coefficient of lateral earth pressure of aggregate-expanded polystyrene beads composite fill-backfill using large oedometer experiments

Shaghayegh Kazempour; Reza Jamshidi Chenari; Hadi Ahmadi; Meghdad Payan; Kostas Senetakis

doi:10.1016/j.conbuildmat.2021.124145

Assessment of the compression characteristics and coefficient of lateral earth pressure of aggregate-expanded polystyrene beads composite fill-backfill using large oedometer experiments

Shaghayegh Kazempour, Reza Jamshidi Chenari, Hadi Ahmadi, Meghdad Payan, Kostas Senetakis^*

^*Corresponding author for this work

Department of Architecture and Civil Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

33 Citations (Scopus)

Abstract

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 (K₀). The results showed that increasing the aggregate particles size led to a decrease of K₀ and the coefficient of volume compressibility, in pure aggregates and aggregate-EPS composites with rigid particles of d₅₀< 2mm. Increased angularity and coefficient of uniformity were observed to display competitive mechanisms in controlling K₀. 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.

Original language	English
Article number	124145
Journal	Construction and Building Materials
Volume	302
Online published	14 Jul 2021
DOIs	https://doi.org/10.1016/j.conbuildmat.2021.124145
Publication status	Published - 4 Oct 2021

Research Keywords

Coefficient of volume compressibility
Composite aggregate
Constrained modulus
EPS beads
Lateral earth pressure

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10.1016/j.conbuildmat.2021.124145

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Kazempour, S., Chenari, R. J., Ahmadi, H., Payan, M., & Senetakis, K. (2021). Assessment of the compression characteristics and coefficient of lateral earth pressure of aggregate-expanded polystyrene beads composite fill-backfill using large oedometer experiments. Construction and Building Materials, 302, Article 124145. https://doi.org/10.1016/j.conbuildmat.2021.124145

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title = "Assessment of the compression characteristics and coefficient of lateral earth pressure of aggregate-expanded polystyrene beads composite fill-backfill using large oedometer experiments",

abstract = "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 (K0). The results showed that increasing the aggregate particles size led to a decrease of K0 and the coefficient of volume compressibility, in pure aggregates and aggregate-EPS composites with rigid particles of d50 < 2mm. Increased angularity and coefficient of uniformity were observed to display competitive mechanisms in controlling K0. 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.",

keywords = "Coefficient of volume compressibility, Composite aggregate, Constrained modulus, EPS beads, Lateral earth pressure",

author = "Shaghayegh Kazempour and Chenari, {Reza Jamshidi} and Hadi Ahmadi and Meghdad Payan and Kostas Senetakis",

year = "2021",

month = oct,

day = "4",

doi = "10.1016/j.conbuildmat.2021.124145",

language = "English",

volume = "302",

journal = "Construction and Building Materials",

issn = "0950-0618",

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Assessment of the compression characteristics and coefficient of lateral earth pressure of aggregate-expanded polystyrene beads composite fill-backfill using large oedometer experiments. / Kazempour, Shaghayegh; Chenari, Reza Jamshidi; Ahmadi, Hadi et al.
In: Construction and Building Materials, Vol. 302, 124145, 04.10.2021.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Assessment of the compression characteristics and coefficient of lateral earth pressure of aggregate-expanded polystyrene beads composite fill-backfill using large oedometer experiments

AU - Kazempour, Shaghayegh

AU - Chenari, Reza Jamshidi

AU - Ahmadi, Hadi

AU - Payan, Meghdad

AU - Senetakis, Kostas

PY - 2021/10/4

Y1 - 2021/10/4

N2 - 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 (K0). The results showed that increasing the aggregate particles size led to a decrease of K0 and the coefficient of volume compressibility, in pure aggregates and aggregate-EPS composites with rigid particles of d50 < 2mm. Increased angularity and coefficient of uniformity were observed to display competitive mechanisms in controlling K0. 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.

AB - 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 (K0). The results showed that increasing the aggregate particles size led to a decrease of K0 and the coefficient of volume compressibility, in pure aggregates and aggregate-EPS composites with rigid particles of d50 < 2mm. Increased angularity and coefficient of uniformity were observed to display competitive mechanisms in controlling K0. 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.

KW - Coefficient of volume compressibility

KW - Composite aggregate

KW - Constrained modulus

KW - EPS beads

KW - Lateral earth pressure

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U2 - 10.1016/j.conbuildmat.2021.124145

DO - 10.1016/j.conbuildmat.2021.124145

M3 - RGC 21 - Publication in refereed journal

SN - 0950-0618

VL - 302

JO - Construction and Building Materials

JF - Construction and Building Materials

M1 - 124145

ER -

Assessment of the compression characteristics and coefficient of lateral earth pressure of aggregate-expanded polystyrene beads composite fill-backfill using large oedometer experiments

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GRF: Experimental Micromechanical Study on the Influence of Environment-soil and Fluid-soil Interactions at the Grain Contact Interfaces

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Assessment of the compression characteristics and coefficient of lateral earth pressure of aggregate-expanded polystyrene beads composite fill-backfill using large oedometer experiments

Abstract

Research Keywords

RGC Funding Information

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GRF: Experimental Micromechanical Study on the Influence of Environment-soil and Fluid-soil Interactions at the Grain Contact Interfaces

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