309.1R-08: Report on Behavior of Fresh Concrete During Vibration

309.1R-08: Report on Behavior of Fresh Concrete During Vibration

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Description

This report covers the rheological and mechanical processes that take place during consolidation of fresh concrete. The first chapter presents the historical developments relative to consolidating concrete. The second chapter provides notations and definitions. The third chapter deals with the rheological behavior of concrete during consolidation and the associated mechanisms of dynamic compaction. The fourth chapter presents the principles of vibratory motion occurring during vibration, vibratory methods, and experimental test results. Continuing research in the field of concrete vibration, as evidenced by the extensive literature devoted to the subject, is addressed.

Keywords: admixtures; aggregates; aggregate shape and texture; aggregate size; amplitude; compacting; consolidation; damping; energy; fresh concrete; hardening; history; mechanical impedance; mixture proportioning; reviews; rheological properties; stability; vibrations; vibrators (machinery).

 

Document Details

Author: ACI Committee 309

Publication Year: 2008

Pages: 18.00

ISBN: 9780870312960

Categories: Consolidation

Formats: PDF

Table of Contents

Chapter 1—Introduction and scope

Chapter 2—Notation and definitions

2.1—Notation

2.2—Definitions

Chapter 3—Influence of rheology on consolidation of fresh concrete

3.1—Rheology of fresh concrete

3.2—Rheology in practice

3.3—Conclusions

Chapter 4—Mechanisms of concrete vibration

4.1—Introduction

4.2—Vibratory motion

4.3—Parameters of concrete vibration

4.4—Vibratory methods

Chapter 5—References

5.1—Referenced standards and reports

5.2—Cited references

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