Accession Number:

ADA010327

Title:

Use of Belt Conveyors to Transport Mass Concrete.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s):

Report Date:

1974-09-01

Pagination or Media Count:

44.0

Abstract:

A series of tests was conducted to determine the effects of using conveyor belts to transport concrete. Concrete mixtures containing aggregate up to 6 in. in nominal maximum size were mixed, placed on conveyors arranged in a triangular pattern, transported up to simulated distances of 6000 ft, and tested for changes in temperature, air content, and workability slump. The results indicate a no change in temperature of the concrete results due to conveying, per se b less than 0.5 percent loss of air may be expected from concrete containing approximately 5 percent air c slump loss of approximately 1-12 in. may be expected when conveying for 1500 ft or less within 10-15 min d comparative tests of idle concrete showed a 1-12-in. slump loss at 20-25 min e indications are that slump loss is increased with 1 increased belt travel time and 2 for a given travel time, greater belt speed and f when conveyor belts are kept full, no segregation due to conveying is apparent.

Subject Categories:

  • Construction Equipment, Materials and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE