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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: A limited Investigation of Capping Materials for Concrete Test Specimens
Author(s): Thomas B. Kennedy
Publication: Journal Proceedings
Appears on pages(s): 117-128
Abstract:An investigation was made of the influence of type and age of cap on the apparent strength of concrete cylinders. The capping materials tested consisted of two types of commercial sulfur-silica compounds and two commercial plasters which had been in general use for this purpose. A total of 252 tests were made of concrete ranging in strengths from 2800 to 7500 psi. The results indicate that the age of the caps has an important bearing on the apparent strength of the concrete with I hr being the minimum time re-quired for the best of the materials to develop the full strength of the concrete.
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