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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Precast Concrete for Underground Transport Systems
Author(s): E. C. Lim
Publication: Special Publication
Appears on pages(s): 835-862
Keywords: concrete construction; grouting; precast concrete;
subsurface structures; tunnel linings; tunnels; waterproofing
Abstract:With limited land space in urban areas, more and more s tructures are being built underground. The housing of under-ground transport facilities requires the construction of structures such as tunnels and shafts. The progress of such works has often been affected by poor soil conditions and the ingress of water. To overcome problems associataed with the use of poured-in-place concrete in such conditions, an increasing number of projects rely on the use of precast concrete. This paper discusses the role of precast concrete segments in the lining of bored tunnels, the use of prefabricated diaphragm walls for cut-and-cover tunnels and precast concrete elements for immersed tube tunnels. Constructional aspects of the London Underground Piccadilly Line Extension, Toronto Subway, Hong Kong Mass Transit Railway, Ahmed Hamdi Road Tunnel, Suez and the Lyon Metro are discussed. The topics elaborated include the manufacture of precast concrete elements, their delivery to site, erection procedures, grouting, waterproofing and protection of concrete against aggressive environment.
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