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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: Lateral Pressures of Concrete on Formwork
Author(s): Roy H. Olsen, Franklin Salek, and Charles F. Peck, Jr.
Publication: Journal Proceedings
Appears on pages(s): 358-361
Keywords: concrete construction; concretes; formwork
(construction); lateral pressure; loading rate; loads (forces);
placing; pressure; triaxial loads.
Abstract:The cost of formwork is often the major factor in the total cost of cast-in-place reinforced concrete. The pressures exerted by the concrete on other than horizontal formwork have been determined in the past by empirical means. The advent of different cements, aggregates, and admixtures makes the use of the existing empirical expressions limited in applicability. A means of readily determining pressures on the formwork by means of laboratory tests is desirable. The triaxial test was used to determine the lateral pres-sures to be expected in formwork. The experiments were conducted using normal cement and aggregate, without admixtures. The results compared favorably with the empirical values currently being used. It is concluded that the triaxial test can be used to determine pressures which other concretes will exert.
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