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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: 309R-05: Guide for Consolidation of Concrete
Author(s): ACI Committee 309
Publication: Technical Documents
Appears on pages(s): 36
Keywords: box out; compaction; consistency; consolidation; placing, rheology; rodding; segregation; spading; tamping; vibration; vibrator; workability.
Abstract:Consolidation is the process of removing entrapped air from freshly placed concrete. Several methods and techniques are available, the choice depending mainly on the workability of the mixture, placing conditions, and degree of air removal desired. Some form of vibration is usually employed. This guide includes information on the mechanism of consolidation and gives recommendations on equipment, characteristics, and procedures for various classes of construction. The paired values stated in inch-pound units and hard SI units are usually not exact equivalents. Therefore, each system is to be used independently of the other. Combining values from the two systems may result in nonconformance with this guide.