RECYCLED CONCRETE

THE USE OF CRUSHED WASTE CONCRETE AS CONCRETE AGGREGATES WAS EVALUATED IN ORDER TO SAVE THE DIMINISHING SUPPLIES OF NATURAL MINERAL AGGREGATES AND TO FIND A MEANS OF SOLVING THE DISPOSAL PROBLEM OF CONCRETES. PORTIONS OF A DISCARDED CONCRETE DRIVEWAY AND A LABORATORY CONCRETE BEAM CONTAINING SILICEOUS AGGREGATES, LIMESTONE AS COARSE AND NATURAL SILICEOUS SAND AS FINE AGGREGATES WERE DIVIDED INTO 6 MIXTURES. EACH MIXTURE WAS TESTED FOR COMPRESSIVE STRENGTH AT DIFFERENT AGES UP TO 6 MONTHS, FOR RESISTANCE TO ACCELERATED FREEZING AND THAWING, AND FOR VOLUME CHANGES DUE TO TEMPERATURE CHANGES OR TO MOISTURE EFFECTS AT A CONSTANT TEMPERATURE. THE RESULTS ARE SUMMARIZED. FOR INSTANCE, THE AGGREGATE PARTICLES PRODUCED BY CRUSHING CONCRETE HAD GOOD PARTICLE SHAPE, HIGH ABSORPTIONS, AND LOW SPECIFIC GRAVITIES. THUS, IT IS CONCLUDED THAT RECYCLED PAVEMENTS OR SIMILAR CONCRETES CAN BE UTILIZED AS COARSE AGGREGATES AND SOMETIMES AS FINE AGGREGATES.

  • Authors:
    • Buck, A D
  • Publication Date: 1972-5

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00214152
  • Record Type: Publication
  • Report/Paper Numbers: No C-72-14
  • Files: TRIS
  • Created Date: Aug 20 1972 12:00AM