Institutional-Repository, University of Moratuwa.  

Supervision of Fabrication of Precast Steel Fibre Reinforced Concrete (SFRC) Segmental Lining

Show simple item record Varghees, G 2015-08-24T11:55:00Z 2015-08-24T11:55:00Z 2015-08-24
dc.description.abstract Precast reinforced concrete (RC) segments have been widely used to construct tunnels for mass rapid transit lines in Singapore. However, the reinforcement bar cages are labour intensive to fabricate and install in moulds. Then the cages must be adjusted in moulds to achieve minimum cover at critical locations such as bolt sockets and cover to external face. Supervision has to be tight to achieve good quality segments. However, with the use of steel fibre reinforced concrete (SFRC), steel reinforcement bars have been eliminated. Steel fibres are added during the batching of concrete. Concrete is then poured in moulds and compacted. Compaction is done by using external vibrators mounted on moulds. For downtown line stage 3 contract 933, SFRC segments were used as tunnel lining. C@nspecs Pte Ltd supervised the production of SFRC segments in the factory. This paper outlines the quality control tests done on the fresh and hardened concrete. en_US
dc.description.sponsorship International Council for Research and Innovation in Building and Construction (CIB) en_US
dc.language.iso en en_US
dc.subject Precast Reinforced Concrete; Steel Fibre Reinforced Concrete (SFRC) en_US
dc.title Supervision of Fabrication of Precast Steel Fibre Reinforced Concrete (SFRC) Segmental Lining en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty IT en_US
dc.identifier.department Department of Building Economics, University of Moratuwa, Sri Lanka en_US
dc.identifier.year 2015 en_US
dc.identifier.conference The 4th World Construction Symposium 2015 en_US Colombo en_US
dc.identifier.pgnos p 469-474 en_US
dc.identifier.proceeding Sustainable Development in the Built Environment: Green Growth and Innovative Directions en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record