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ACI 309R

Guide for Consolidation of Concrete

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Organization: ACI
Publication Date: 1 January 2005
Status: active
Page Count: 36
scope:

Freshly placed unconsolidated concrete contains excessive and detrimental entrapped air. If allowed to harden in this condition, the concrete will be porous and poorly bonded to the reinforcement. It will have low strength, high permeability, and poor resistance to deterioration. It may also have a poor appearance. The mixture should be consolidated if it is to have the properties desired and expected of concrete.

Document History

ACI 309R
January 1, 2005
Guide for Consolidation of Concrete
Freshly placed unconsolidated concrete contains excessive and detrimental entrapped air. If allowed to harden in this condition, the concrete will be porous and poorly bonded to the reinforcement. It...
ACI 309R
May 24, 1996
Guide for Consolidation of Concrete
This guide includes information on the mechanism of consolidation, and gives recommendations on equipment, characteristics, and procedures for various classes of construction.
309R
January 1, 1987
Guide for Consolidation of Concrete
A description is not available for this item.

References

This document references:
ACI 309.2R - Guide to Identification and Control of Visible Surface Effects of Consolidation on Formed Concrete Surfaces
Published by ACI on February 1, 2015
This guide does not define an acceptable level of quality, as this should be determined by the parties involved with the project. A perfectly formed concrete surface, uniformly smooth or deeply...
This document references:
ACI 234R - Guide for the Use of Silica Fume in Concrete
Published by ACI on January 1, 2006
General Silica fume, a by-product of the ferrosilicon industry, is a highly pozzolanic material that is used to enhance mechanical and durability properties of concrete. It may be added directly to...
This document references:
ACI 304.3R - Heavyweight Concrete: Measuring, Mixing, Transporting, and Placing
Published by ACI on November 1, 2020
Heavyweight concrete is used in counterweights of bascule, lift, and cable-stay bridges. It is used for counterweights for both cranes and concrete-conveying equipment. It has also been used for...
This document references:
ACI 212.3R - Report on Chemical Admixtures for Concrete
Published by ACI on March 1, 2016
This report deals with state-of-the-art and commonly used admixtures. Materials such as supplementary cementitious materials that are used to produce concrete are only referred to in regards to their...
This document references:
ACI 211.2 - Standard Practice for Selecting Proportions for Structural Lightweight Concrete
Published by ACI on January 1, 1998
Discussion in this standard is limited to structural grade, lightweight aggregates, and structural lightweight-aggregate concrete. Structural lightweight-aggregate concrete is defined as concrete...
This document references:
ACI 212.3R - Report on Chemical Admixtures for Concrete
Published by ACI on March 1, 2016
This report deals with state-of-the-art and commonly used admixtures. Materials such as supplementary cementitious materials that are used to produce concrete are only referred to in regards to their...
This document references:
ACI 233R - Guide to the Use of Slag Cement in Concrete and Mortar
Published by ACI on September 1, 2017
Scope and objective The objective of this report is to compile and to present experiences in research and field use of slag cement in concrete and mortar, and to offer guidance in its specification,...
This document references:
ACI 234R - Guide for the Use of Silica Fume in Concrete
Published by ACI on January 1, 2006
General Silica fume, a by-product of the ferrosilicon industry, is a highly pozzolanic material that is used to enhance mechanical and durability properties of concrete. It may be added directly to...
This document references:
ACI 304.3R - Heavyweight Concrete: Measuring, Mixing, Transporting, and Placing
Published by ACI on November 1, 2020
Heavyweight concrete is used in counterweights of bascule, lift, and cable-stay bridges. It is used for counterweights for both cranes and concrete-conveying equipment. It has also been used for...
This document references:
ACI 309.2R - Guide to Identification and Control of Visible Surface Effects of Consolidation on Formed Concrete Surfaces
Published by ACI on February 1, 2015
This guide does not define an acceptable level of quality, as this should be determined by the parties involved with the project. A perfectly formed concrete surface, uniformly smooth or deeply...
This document is referenced by:
ACI 363.2R - Guide to Quality Control and Assurance of High-Strength Concrete
Published by ACI on July 1, 2011
This guide discusses QC and testing practices of HSC. HSC usually is associated with structures that have been optimized for performance. Therefore, a high degree of confidence in concrete quality...
This document is referenced by:
ACI 543R - Guide to Design, Manufacture, and Installation of Concrete Piles
Published by ACI on March 1, 2012
General Piles are slender structural elements installed in the ground to support a load or compact the soil. They are made of several materials or combinations of materials and are installed by...
This document is referenced by:
533R - Guide for Precast Concrete Wall Panels
Published by ACI on January 1, 2011
This document provides guidelines for specifying, planning, designing, fabrication, and erecting precast concrete wall panels. Although the focus is on precast wall panels produced in established...
This document is referenced by:
ACI 408R - Bond and Development of Straight Reinforcing Bars in Tension
Published by ACI on November 1, 2003
PREFACE The bond between reinforcing bars and concrete has been acknowledged as a key to the proper performance of reinforced concrete structures for well over 100 years (Hyatt 1877). Much research...
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