EFFECTS OF REACTIVE CARBONATE AGGREGATES ON THE DURABILITY OF LABORATORY CONCRETE SPECIMENS

THE OBJECTIVES OF THIS STUDY WERE TO DETERMINE: (1) THE RELATIONSHIP BETWEEN THE EXPANSION OF CARBONATE ROCK PRISMS IN 1 N NAOH AND THE EXPANSION OF CONCRETE MADE WITH THESE CARBONATE ROCKS IN VARIOUS ENVIRONMENTS AND WITH CEMENT OF VARIOUS ALKALI CONTENTS, (2) THE REDUCTION IN EXPANSION ON REPLACING 20 PERCENT OF THE CEMENT WITH FLY ASH. FROM THE WORK, IT WAS FOUND THAT: (1) EXPANSION OF CONCRETE TENDS TO BE DIRECTLY RELATED TO (1) EXPANSION OF THE ROCK PRISMS, (2) THE ALKALI CONTENT OF THE CEMENT, (3) THE ENVIRONMENT TO WHICH THE CONCRETE IS SUBJECTED, (4) THE LENGTH OF THE TEST PERIOD. STORAGE OF THE CONCRETES CONTAINING REACTIVE CARBONATE ROCKS IN 4 PERCENT NACL SOLUTION SIGNIFICANTLY INCREASED EXPANSION THE USE OF FLY ASH IN CONCRETE DECREASED EXPANSION ONLY SLIGHTLY. /BPR/

Subject/Index Terms

Filing Info

  • Accession Number: 00212016
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Report/Paper Numbers: Hpr 60-1
  • Files: TRIS
  • Created Date: Oct 4 1994 12:00AM