PROPOSED REVISION OF - PLACING CONCRETE WITH BELT CONVEYORS

This state-of-the-art report includes a short history on the early dev elopment 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 conv eyors are the portable, feeder and spreader types and their particular applications are covered. Field practices in the selection, use and m aintenance of conveyors are described. The economics of bell conveyor placement is discussed. The quality of the in-place concrete and inspe ction procedures are stressed.