DURABILITY OF CONCRETE INCORPORATING HIGH VOLUMES OF FLY ASH FROM SOURCES IN THE U.S.

This paper presents the results of investigations to determine the various durability aspects of high-volume fly ash concrete using eight fly ashes and two portland cements from United States (U.S.) sources. Briefly, in high-volume fly ash concrete, the water and cement content are kept low at about 115 and 155 kg/m of concrete, respectively, and the proportion of fly ash in the total cementitious materials content ranges from 55 to 60 percent. The durability aspects investigated included resistance to the repeated cycles of freezing and thawing, the deicing salt-scaling resistance, the resistance to the chloride-ion penetration, and the determination of water permeability coefficient. Based upon the test results, it is concluded that regardless of the type of fly ash and the cements used, the air-entrained high-volume fly ash concrete exhibited excellent durability characteristics in the tests investigated. The only exception was the deicing salt-scaling test in which the performance of the concretes investigated was less than satisfactory.

Language

  • English

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  • Accession Number: 00664778
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 29 1994 12:00AM