ACI 309.1R 08:2008 Edition

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

Published By	Publication Date	Number of Pages
ACI	2008	22

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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).

PDF Catalog

PDF Pages	PDF Title
3	CONTENTS
4	CHAPTER 1— INTRODUCTION AND SCOPE
6	CHAPTER 2— NOTATION AND DEFINITIONS 2.1—Notation 2.2—Definitions
7	CHAPTER 3— INFLUENCE OF RHEOLOGY ONCONSOLIDATION OF FRESH CONCRETE 3.1—Rheology of fresh concrete
8	3.2—Rheology in practice 3.2.1 Mixture proportioning 3.3—Conclusions CHAPTER 4— MECHANISMSOF CONCRETE VIBRATION 4.1—Introduction 4.2—Vibratory motion
9	4.3—Parameters of concrete vibration 4.3.1 Wave transmission through fresh concrete
10	4.3.2 Vibration process
12	4.3.3 Energy consumption 4.4—Vibratory methods 4.4.1 Internal vibration
15	4.4.2 Surface vibration 4.4.3 Form vibration
16	4.4.4 Table vibration
17	CHAPTER 5— REFERENCES 5.1—Referenced standards and reports
18	5.2—Cited references