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ACI R – Guide for Consolidation of Concrete – Free Download PDF
We need your help to maintenance this website. By using certain chemical admixtures ACI 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.
Any applicable errata are included with individual documents at the time of purchase. Several methods and techniques are available, the choice depending mainly on the workability of the mixture, placing conditions, and degree of air removal desired. The mixture should be consolidated if it is to have the properties desired and expected of concrete.
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The paired values stated in inch-pound units and hard SI units are usually not exact equivalents. Please copy and paste this embed script to where you want to embed Embed Script. 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.
Therefore, each system is to be used independently of the other. Equipment and acci are now available for fast and efficient consolidation of concrete over a wide range of placing conditions. Olson Mike Thompson Bradley K.
309R-05: Guide for Consolidation of Concrete
Size px x x x x 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. Click here to view the first two pages of this publication – pdf file format. Please help us to share our service with your friends. Guide to Mass Concrete Reapproved It may also have a poor appearance. All rights reserved including rights of reproduction and use in any form or by any means, including the making of copies by any photo process, or by electronic or mechanical device, printed, written, or oral, or recording for sound or visual reproduction or for use in any knowledge or retrieval system or device, unless permission in writing is obtained from the copyright proprietors.
Consolidation is the process of removing entrapped air from freshly placed concrete. Reference to this document shall not be made in contract documents.
ACI 309R-05 – Guide for Consolidation of Concrete
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As the water content of the concrete is reduced, concrete strength, permeability, and other desirable properties improve, provided that the concrete is properly consolidated. We need your help!
Mixture proportioning is described in ACI The various consistency tests have been discussed by NevilleVollickand Ferraris When good consolidation practices are combined with good formwork and good form release agents, concrete surfaces have a highly pleasing appearance Fig.
Several methods and techniques are available, the choice depending on the workability of the mixture, placing conditions, and degree of air removal desired. Combining values from the two systems may result in nonconformance with this guide.
Please choose a product format. Manual of Concrete Inspection.
This guide includes information on the mechanism of consolidation and gives recommendations on equipment, characteristics, and 309r-055 for various classes of construction.
The full and complete returned product will be accepted if returned within 60 days of receipt and in salable condition. These methods are infrequently used.
Choose Product Language English. Some form of vibration is usually employed. Concrete Consolidation in the 21st Century. If adequate consolidation is not provided for these stiffer mixtures, the strength of the in-place concrete decreases rapidly. Consolidation is the process of removing entrapped air from freshly placed concrete.