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R Guide for Consolidation of Concrete
If allowed to harden in this condition, the concrete will be porous and poorly bonded to the reinforcement. For a listing of and access to all product errata, visit the Errata page. This guide includes information on the mechanism of consolidation and gives recommendations on equipment, characteristics, and procedures for various classes of construction.
Therefore, each system is to be used independently of the 309r-055.
ACI R – Guide for Consolidation of Concrete – Free Download PDF
Errata are not included for collections or sets of documents such as the ACI Collection. Consolidation is the process of inducing a closer arrangement of the solid particles in freshly mixed concrete or mortar during placement by the reduction of voids, usually by vibration, centrifugation spinningrodding, spading, tamping, or some combination of these actions.
This guide includes information on the mechanism of consolidation and gives recommendations on equipment, characteristics, and procedures for various classes of construction.
The mixture should be consolidated if it is to have the properties desired and expected of concrete. We need your help! Concrete with a relatively low water content can be readily molded into an unlimited variety of shapes, making it a highly versatile and economical construction material.
Thank you for interesting in 309-05 services. Ford Subcommittee Chair Neil A. Size px x x x x When good consolidation practices are combined with good formwork and good form release agents, concrete surfaces have a highly pleasing appearance Fig. Click here to view the first two pages of this publication – pdf file format. Equipment and methods are now available for fast and efficient consolidation of concrete over a wide range of placing conditions. Combining values from the two systems may result in nonconformance with this guide.
These methods are infrequently used. We need your help to maintenance this website. Some form of vibration is usually employed. Guide to Mass Concrete Reapproved We are a non-profit group that run this website to share documents.
Any applicable errata are included with individual documents at the time of purchase. The full and complete returned product will be accepted if returned within 390r-05 days of receipt and in salable condition. Some form of vibration is usually employed.
Several methods and techniques are available, the choice depending on the workability of the mixture, placing conditions, and degree of air removal desired. Choose Product Language English. By using certain chemical admixtures ACI The American Concrete Institute disclaims any and all responsibility for the stated principles. As the water content of the concrete is reduced, concrete strength, permeability, and other desirable properties improve, provided acci the concrete is properly consolidated.
Please copy and paste this embed script to where you want to embed Embed Script. Please fill this form, we will try to respond as soon as possible. Please choose a product format. If adequate consolidation is not provided for these stiffer mixtures, the strength of the in-place concrete decreases rapidly. Concrete Consolidation in the 21st Century.
The paired values stated in aaci units and hard SI units are usually afi exact equivalents. These items are not eligible for return. Consolidation is the process of removing entrapped air from freshly placed concrete. Mixture proportioning is described in ACI Celik Ozyildirim Timothy P. PDF free access to members.
It may also have a poor appearance. This document is intended for the use of individuals who are competent to evaluate the significance and limitations of its content and recommendations and who will accept responsibility for the application of the material it contains.
The Institute shall not be liable for any loss or damage arising therefrom.
Stiffer mixtures require greater effort to achieve proper consolidation. Several methods and techniques are available, the choice depending mainly on the workability of the mixture, placing conditions, and degree of air removal desired.
ACI 309R-05 – Guide for Consolidation of Concrete
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Compaction of Roller-Compacted Concrete Reapproved Olson Mike Thompson Bradley K. Consolidation is the process of removing entrapped air from freshly placed concrete. ACI Committee Reports, Guides, Standard Practices, and Commentaries are intended for guidance in 309g-05, designing, executing, and inspecting construction.
It will have low strength, high permeability, and poor resistance to deterioration. The various consistency tests have been discussed by NevilleVollickand Ferraris Manual of Concrete Inspection. Reference to this document shall not be made in contract documents. Please help us to share our service with your friends.