ACI 304.2R 17:2017 Edition
$29.52
304.2R-17 Guide to Placing Concrete by Pumping Methods
Published By | Publication Date | Number of Pages |
ACI | 2017 | 24 |
This guide discusses the use of pumps for transporting and placing concrete. Rigid and flexible pipelines, couplings and other accessories, and the various types of concrete pumps are discussed. The importance of proportioning a pumpable concrete mixture is emphasized with reference to sources for further direction on its design. Evaluation of trial mixtures to ensure pumpability and strength is encouraged. Of specific importance is a discussion on the use of lightweight aggregates. Methods to saturate these aggregates and provide a consistent moisture content are discussed. Preconstruction planning for equipment placement and line routing are emphasized. Discussions on achieving a consistent mixture and its critical importance are also addressed.
PDF Catalog
PDF Pages | PDF Title |
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3 | TITLE PAGE |
4 | CHAPTER 1—INTRODUCTION AND SCOPE 1.1—Introduction 1.2—Scope CHAPTER 2—DEFINITIONS CHAPTER 3—PUMPING CONCRETE 3.1—Mixture component distribution |
5 | 3.2—Disruptions to flow |
6 | CHAPTER 4—PUMPING EQUIPMENT AND COMPONENTS 4.1—Piston pumps 4.2—Valve types |
7 | 4.3—Trailer pumps 4.4—Truck-mounted concrete pumps |
8 | 4.5—Separate placing booms 4.6—Specialized equipment 4.7—Pipeline and accessories |
11 | 4.8—Flexible system hose types and applications 4.9—Concrete placing system accessories |
13 | CHAPTER 5—PUMPABLE CONCRETE 5.1—Basic considerations 5.2—Normalweight aggregate |
14 | 5.3—Lightweight aggregate concrete 5.4—Water and slump |
16 | 5.5—Cementitious materials 5.6—Admixtures 5.7—Fiber reinforcement |
17 | 5.8—Trial mixtures and pumpability testing 5.9—Estimating performance CHAPTER 6—FIELD PRACTICES 6.1—General |
18 | 6.2—Pipeline concrete placement |
19 | 6.3—Powered boom placement |
20 | 6.4—Equipment and operational safety 6.5—Reduction in air content |
21 | CHAPTER 7—FIELD CONTROL CHAPTER 8—REFERENCES Authored documents |