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Shear strength characteristics of mechanically biologically treated (MBT) waste

Shear strength characteristics of mechanically biologically treated (MBT) waste
Shear strength characteristics of mechanically biologically treated (MBT) waste
Mechanical biological treatment (MBT) is the generic name for a group of processes which have been used to reduce the biodegradable content of municipal solid waste (MSW) in order to aid compliance with the Landfill Directive. As a result of mechanical biological treatment, MSW is converted to a material which has different properties to its parent material, including changes to its mechanical properties.

The aims of this research were to identify:

• The shear strength characteristics of aerobically treated MBT, processed at New Earth Solutions (NES) in the UK
• Changes to the properties of the reinforcing elements due to the MBT process and its impact to the shear strength

NES produced two fractions of MBT residue (0-10 mm and 0-20 mm) which were tested using direct shear equipment in order to identify the shear strength characteristic of the MBT residues. It was thought MBT might be a weak material compared to MSW due to the significant reduction of the reinforcing particles size and content, the results confirmed that MBT is a strong material (mobilizes its strength rapidly with displacement) compared to MSW. MBT processes lead to changes in both the content of reinforcing particles and their properties. The reinforcing effect and its impact on the shear strength of MBT waste was tested using direct shear. To an unreinforced basic matrix of either MBT or compost were added reinforcing elements in a controlled way to investigate the impact on shear strength from each identified reinforcement property.
Fernando, V.I. Sudarshana C.K.
7610f1e6-a814-4e0a-a5d5-5353907fff3c
Fernando, V.I. Sudarshana C.K.
7610f1e6-a814-4e0a-a5d5-5353907fff3c
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Richards, David
a58ea81e-443d-4dab-8d97-55d76a43d57e

Fernando, V.I. Sudarshana C.K. (2011) Shear strength characteristics of mechanically biologically treated (MBT) waste. University of Southampton, School of Civil Engineering and the Environment, Doctoral Thesis, 206pp.

Record type: Thesis (Doctoral)

Abstract

Mechanical biological treatment (MBT) is the generic name for a group of processes which have been used to reduce the biodegradable content of municipal solid waste (MSW) in order to aid compliance with the Landfill Directive. As a result of mechanical biological treatment, MSW is converted to a material which has different properties to its parent material, including changes to its mechanical properties.

The aims of this research were to identify:

• The shear strength characteristics of aerobically treated MBT, processed at New Earth Solutions (NES) in the UK
• Changes to the properties of the reinforcing elements due to the MBT process and its impact to the shear strength

NES produced two fractions of MBT residue (0-10 mm and 0-20 mm) which were tested using direct shear equipment in order to identify the shear strength characteristic of the MBT residues. It was thought MBT might be a weak material compared to MSW due to the significant reduction of the reinforcing particles size and content, the results confirmed that MBT is a strong material (mobilizes its strength rapidly with displacement) compared to MSW. MBT processes lead to changes in both the content of reinforcing particles and their properties. The reinforcing effect and its impact on the shear strength of MBT waste was tested using direct shear. To an unreinforced basic matrix of either MBT or compost were added reinforcing elements in a controlled way to investigate the impact on shear strength from each identified reinforcement property.

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More information

Published date: November 2011
Organisations: University of Southampton, Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 301380
URI: http://eprints.soton.ac.uk/id/eprint/301380
PURE UUID: a6eab61b-85e4-49e3-8e2e-8fb2937932bb
ORCID for William Powrie: ORCID iD orcid.org/0000-0002-2271-0826

Catalogue record

Date deposited: 02 Apr 2012 15:55
Last modified: 06 Jun 2018 13:06

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Contributors

Author: V.I. Sudarshana C.K. Fernando
Thesis advisor: William Powrie ORCID iD
Thesis advisor: David Richards

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