Accession Number:

AD0743460

Title:

Recycled Concrete

Descriptive Note:

Final rept. 1 Jul 1971-30 Apr 1972

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS

Personal Author(s):

• Buck, Alan D.

Report Date:

1972-05-01

Pagination or Media Count:

41.0

Abstract:

Supplies of natural mineral aggregates are diminishing even as usage increases. Disposal problems exist because of steadily increasing accumulation of solid wastes. In light of these two situations an investigation was made to evaluate the use of crushed waste concrete similar to pavement concrete as concrete aggregates. A discarded concrete driveway that contained siliceous aggregates and a laboratory concrete beam that contained limestone as coarse and natural siliceous sand as fine aggregate were selected to represent pavement concretes. Portions of each kind of concrete were processed into aggregate sizes. Three concrete mixtures were made to evaluate the driveway concrete as aggregate, and two other mixtures were made to evaluate the crushed concrete beam as aggregate.

Descriptors:

• *CONCRETE
• *CONSTRUCTION MATERIALS
• PARTICLE SIZE
• SOLIDS
• FREEZING
• MOISTURE
• WASTES(INDUSTRIAL)
• ACCEPTABILITY
• LIMESTONE
• MIXTURES
• TEMPERATURE

Subject Categories:

• Construction Equipment, Materials and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE