DE-ICING - SALT - RESISTANT CONCRETE - A NEW GUIDELINE OF THE AUSTRIAN CONCRETE ASSOCIATION

FROST - TAUSALZ - BESTAENDIGER BETON - EINE NEUE RICHTLINIE DES OESTERREICHISCHEN BETONVEREINS

The background to the development of the recommendations of the Austrian concrete association on deicing salt resistant concrete is outlined and the guidelines are summarised. The most important factors are the water/cement ratio, air porosity and the type of frost resistant additives used. The new guideline was necessary, not so much for the pavement quality concrete which has been successfully produced for many years, but for other elements such as ducting and noise abatement walls. Surfaces should in general be only roughly smoothed to prevent damage to the air-holes in the surface. The maximum permissible water/cement ratio has been slightly lowered from 0.47 to 0.45 and the air content must be within 3.5 to 5.5 per cent. The air pore agent used must conform to a given standard. If other agents are used as well, the contractor must provide proof that the finished concrete contains on adequate number of small pores as well as large ones. Hammer tests must be carried to determine the friable grain content of the concrete. Concrete must be laid within a period of 90 minutes after water has been added at the mixing plant. Rapid drying of the concrete must be avoided. This paper was originally published in Austrian in Zement und Beton (1989) 34(3), p125-8.

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Tambour, A
  • Nischer, P
• Publication Date: 1990-4

Language

• English

Media Info

• Pagination: 11 p.
• Serial:
  • TRRL TRANSLATION
  • Publisher: Transport and Road Research Laboratory (TRRL)

Subject/Index Terms

• TRT Terms: Additives; Concrete; Corrosion; Deicing chemicals; Durability; Frost damage; Mix design; Porosity; Prevention; Specifications; Translations
• Geographic Terms: Austria
• Subject Areas: Data and Information Technology; Security and Emergencies;

Filing Info

• Accession Number: 00606123
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: T 3614
• Files: ITRD, TRIS
• Created Date: Mar 31 1991 12:00AM