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Experimental investigation into the interface properties of composite concrete lined structures

Experimental investigation into the interface properties of composite concrete lined structures
Experimental investigation into the interface properties of composite concrete lined structures
Composite shell linings, consisting of a layer of permanent sprayed concrete to form a primary lining, a layer of spray applied waterproofing membrane and a further layer of sprayed or cast secondary concrete lining, represent the latest development in the tunnelling industry. While demand for the composite shell method is increasing, there are still some unknowns associated with it. One of the biggest areas of uncertainty for the composite shell method is the extent of composite action in the interfaces between the sprayed waterproofing membrane and the primary and the secondary linings. A research programme is in progress at the University of Southampton, UK, to investigate the behaviour of composite shell SCL tunnels. As part of the testing programme, a series of short-term direct tension and direct shear tests have been carried out on samples cut from panels built up from a sprayed primary layer, spray applied waterproofing membrane and sprayed secondary layer. The aim of the tests has been to understand the fundamental properties of sprayed concrete-membrane bonding systems, especially the impact of the interface roughness on strength and stiffness. This paper will report some of the test results obtained and their significance
9781138000940
CRC Press
Su, J.
b468112d-4f35-49fa-b57f-f6bd168ecde1
Bloodworth, A.G.
08ac0375-0691-41d4-937d-d7d643dc8ddb
Haig, B.
8309c942-ca07-443b-8750-d44cfe72b0d4
Anagnostou, Georg
Ehrbar, Heinz
Su, J.
b468112d-4f35-49fa-b57f-f6bd168ecde1
Bloodworth, A.G.
08ac0375-0691-41d4-937d-d7d643dc8ddb
Haig, B.
8309c942-ca07-443b-8750-d44cfe72b0d4
Anagnostou, Georg
Ehrbar, Heinz

Su, J., Bloodworth, A.G. and Haig, B. (2013) Experimental investigation into the interface properties of composite concrete lined structures. Anagnostou, Georg and Ehrbar, Heinz (eds.) In Underground. The Way to the Future. CRC Press. 8 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Composite shell linings, consisting of a layer of permanent sprayed concrete to form a primary lining, a layer of spray applied waterproofing membrane and a further layer of sprayed or cast secondary concrete lining, represent the latest development in the tunnelling industry. While demand for the composite shell method is increasing, there are still some unknowns associated with it. One of the biggest areas of uncertainty for the composite shell method is the extent of composite action in the interfaces between the sprayed waterproofing membrane and the primary and the secondary linings. A research programme is in progress at the University of Southampton, UK, to investigate the behaviour of composite shell SCL tunnels. As part of the testing programme, a series of short-term direct tension and direct shear tests have been carried out on samples cut from panels built up from a sprayed primary layer, spray applied waterproofing membrane and sprayed secondary layer. The aim of the tests has been to understand the fundamental properties of sprayed concrete-membrane bonding systems, especially the impact of the interface roughness on strength and stiffness. This paper will report some of the test results obtained and their significance

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Published date: 20 May 2013
Venue - Dates: World Tunnel Congress 2013, Switzerland, 2013-05-31 - 2013-06-07
Organisations: Infrastructure Group

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Local EPrints ID: 360944
URI: https://eprints.soton.ac.uk/id/eprint/360944
ISBN: 9781138000940
PURE UUID: d4ae94e5-3c4c-42b9-8530-7e0ee6b1b415

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Date deposited: 10 Jan 2014 10:22
Last modified: 09 Sep 2019 18:45

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