Title:
Proposed Revision of: Placing Concrete with Belt Conveyors
Author(s):
ACI Committee 304
Publication:
Materials Journal
Volume:
91
Issue:
6
Appears on pages(s):
617-631
Keywords:
belt conveyors; concrete construction; concretes; conveying; conveyors; economics; feeders; fresh concretes; inspection; maintenance; placing; quality control; workability; Construction
DOI:
10.14359/1570
Date:
11/1/1995
Abstract:
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. Bell widths, speeds, and angles of inclination are considered as 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 bell conveyor placement is discussed. The quality of the in-place concrete and inspection procedures are stressed.