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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 Units Used as Forms
for Cast-in-Place Concrete
Author(s): ACI Committee 347
Publication: Journal Proceedings
Appears on pages(s): 798-813
Keywords: architectural concrete; bond (concrete to concrete) ; bridges (structures); buildings; concrete blocks; concrete construction; concrete dams; connections; ferrocements; floors; formwork (construction);hydraulic structures; inserts;joints (junctions).
Abstract:Precast concrete units, unreinforced, reinforced, or prestressed, are used as forms for both cast-in-place and precast concrete. This report deals with precast units as forms for cast-in-place work, showing how such units are used: (a) as structurally adequate for applied loads and concrete pressures without support except ties and alignment braces, or (b) as liners for forms made of other materials. These concrete forms may either be removed after casting or remain in place as a permanent part of the structure. A principal application of stay-in-place forms has been as architectural facing, but some stay-in-place forms also become structurally composite with the cast-in-place concrete. This report surveys development of various types of precast forms including ferrocement and facing slabs for mass concrete and hydraulic structures, but concentrates on structural and architectural uses which have been most prevalent in the United States and Canada. Typical formwork installations are described and factors influencing their use are discussed. Also, design and construction requirements for this type of formwork are outlined and suggestions are made for handling, erection, and use of precast forms. Recommendations are given for treatment of joint and connection details and for bond and anchorage of the form units.
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