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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 > Tools > Frequently Asked Questions
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Consolidation of concrete—required or not?
What nominal maximum sizes of aggregate are recommended?
How should the concrete be consolidated to obtain a complete filling of the forms and around the reinforcement?
Why is consolidation needed?
How is concrete consolidated?
How is concrete placed?
What consideration should be given to water that may be lost from concrete between the time it leaves the mixer and its final consolidation in the form?
Factors governing the strength of concrete
What is the importance of consolidation on strength?
Why is a plastic consistency usually desirable for placing concrete?
How is the selection of mixture proportions affected by the materials to be used and the placing requirements?
What are the essential requirements of consistency?
Does over-vibration cause segregation and loss of air content?
Can the importance of proper consistency for placing be overemphasized?
Factors affecting permeability
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