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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: Cracks in Concrete
Author(s): Byram W. Steele
Publication: Journal Proceedings
Appears on pages(s): 629-634
Abstract:Cracks in concrete that are irregular and uncontrolled are objectionable. If causes were better understood, the elimination of cracks would be less diffi-cult. Cracks are mainly due to one or more of the following causes: (I) lack of adequate investigation of all the ingredients involved; (2) lack of sufficient advance planning to obtain satisfactory results; (3) lack of team work in the human element involved in this intricate manufacturing process; and (4) lack of teamwork (compatibility) in the Ingredients which include alkali-aggregate reaction and the use of argillaceous limestone and chert as aggregate. The modern laboratory’s test procedure will not condemn many limestones and cherts that are capable of starting surface cracking. The elimination of unsound types is not at all a simple procedure. A suggested A-B-C procedure is offered toward the partial elimination of cracks: A. to qate with good establish approved sources service record: B. thorough aggregate investigatie new sources of supply subjecting them to all known tests including analysis by a petrographer; C. study the design of every structure proposed with a view towards eliminating structural cracks by proper control of the design of the mix and the placing of the concrete and provide relief from volume change tensile stresses, with designed cracks placed where they will not be objectionable.
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