FROST RESISTANCE AND AIR-VOID CHARACTERISTICS IN HARDENED CONCRETE . NORDIC CONCRETE RESEARCH. PUBLICATION NO 7

For many construction sites it is a problem to keep the required air-void content during transportation and handling of the concrete. Also, for many concrete structures it is a problem to meet combined requirements of high compressive strength and high air-void content based on local aggregates available. Extensive testing of the air-void system in concrete from a variety of construction sites in Norway over recent years has shown that the majority of specimens had a relatively low air-void content, and only about half of the specimens had proper air-void characteristics according to common requirements. In order to provide a better basis for evaluating the observed air-void characteristics, freeze-thaw testing for a number of the concretes was also carried out, and this testing was based on the critical degree of saturation method. The results indicate that it may be difficult to establish a direct relationship between air-void characteristics and frost resistance without also taking into account information about capillary voids and strength properties. As a basis for evaluation of the potential frost resistance of a concrete the frost resistance number is introduced. This number is based on information about compressive strength, water-cement ratio, paste fraction and amount of air-voids smaller than 300 micron. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08006377
• Corporate Authors:

  Nordic Concrete Federation

  Ingeniorernes, Kronprinsesgade 17 N
  Oslo 2,   Norway 
• Authors:
  • Gjoerv, O G
  • Okkenhaug, K
  • Bathen, E
  • Husevaeg, R
• Publication Date: 1988-12

Media Info

• Pagination: p. 89-104
• Serial:
  • Publication of: NORDIC CONCRETE FEDERATION
  • Publisher: NORDIC CONCRETE FEDERATION
  • ISSN: 0800-6377

Subject/Index Terms

• TRT Terms: Compression; Concrete; Frost; Handling characteristics; Porosity; Quality control; Strength of materials
• Uncontrolled Terms: Handling; Quality
• ITRD Terms: 5532: Compression; 4755: Concrete; 2585: Frost; 5149: Mechanical handling; 5938: Porosity; 9063: Quality; 5544: Strength (mater)
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00493288
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 31 1990 12:00AM