ACI PRC-304.4-95: Placing Concrete with Belt Conveyors (Reapproved 2008)

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This state-of-the-art report includes a short history on the early development of conveyor belts for transporting and placing concrete. The design of conveyor systems is discussed in relation to the properties of the plastic concrete, the delivery rate and the job specifications. Belt widths, speeds, and angles of inclination are considered art they apply to specific site requirements. The three types of concrete conveyors are the portable, feeder, and spreader types and their particular applications are covered. Field practices in the selection, use and maintenance of conveyors are described. The economics of belt conveyor placement is discussed. The quality of the in-place concrete and inspection procedures are stressed.

Keywords: belt conveyors; concrete construction; concretes, conveying; conveyors; economics; feeders; fresh concretes; inspection; maintenance; placing; quality control; workability.


Document Details

Author: ACI Committee 304

Publication Year: 2002

Pages: 15

ISBN: 9780870315008

Categories: Placing

Formats: PDF

Table of Contents

Chapter 1--Introduction



1.3--Concrete conveyor development

Chapter 2--Design considerations

2.1--General requirements

2.2--Concrete ribbon parameters

2.3--Belt charging

2.4--Belt discharge

2.5--Belt conveyor design principles

2.6--Concrete mixture proportioning for conveying


Chapter 3--Types of conveyors and functions


3.2--Portable conveyors

3.3--Feeder conveyors

3.4--Spreading conveyors

3.5--Conveyor combinations

3.6--Special conveyors

3.7--Economics of conveyor placement

Chapter 4--Field practice

4.1--Selection of conveyors

4.2--Actual capacity

4.3--Conveyor charging

4.4--Discharge control


Chapter 5--Control practices

5.1--Concrete inspection


Chapter 6--Information sources

6.1 --Specified and/or recommended reference

6.2--Cited references

6.3--Additional references


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