A study about durability with regard to framework corrosion of concretes formulated with high blast-furnace slag content

The durability of nine concretes, mainly formulated with blast-furnace slag based cements, has been studied from life-size test samples. This article recalls hydration properties of blast-furnace slag and its different activation forms. It presents experimental results obtained at the time of tests carried out in laboratory on cores extracted from 90 days old test samples. Several quantities have been measured to determine the properties of concretes with regard to their mechanical resistance and durability: compression strength, water porosity, gas permeability, effective diffusion coefficient of chloride ions, carbonation resistance by an accelerated test, pore size determination by mercury porosimetry, and microstructure following by thermal analysis. Experimental results show that blending in cements of more than 40 % of blast-furnace slag generates better durability concretes with regard to processes linked with chlorides penetration in the material. The use of blast-furnace slag based cement in raising frameworks is not systematically associated with a corrosion risk of armature by carbonation.

• Authors:
  • DIVET, Loïc
  • LE ROY, Robert
• Publication Date: 2013

Language

• French

Media Info

• Media Type: Digital/other
• Pagination: pp 63-84
• Serial:
  • Bulletin des Laboratoires des Ponts et Chaussées
  • Issue Number: 280-281

Subject/Index Terms

• TRT Terms: Cement; Durability; Slag
• ITRD Terms: 4758: Ciment; 5910: Durabilite; 4561: Laitier
• Subject Areas: Materials;

Filing Info

• Accession Number: 01537676
• Record Type: Publication
• Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Amenagement et des Reseaux (IFSTTAR)
• Files: ITRD
• Created Date: Sep 16 2014 11:26AM