FROST DURABILITY OF HIGH-PERFORMANCE CONCRETE INCORPORATING SLAG OR SILICA FUME

This paper presents the results of laboratory studies conducted to determine freezing and thawing and scaling resistance of high-performance concrete. High-performance concretes were made using a combination of different cementitious materials (blast-furnace slag and silica fume). The water-to-cementitious materials ratio was 0.27, and the bulk volume of coarse aggregate and fine aggregate per unit volume of concrete were fixed at 0.50 and 0.60, respectively. All mixtures used a superplasticizer and were non-air-entrained. Test cylinders were cast for testing in compression at 1 and 28 days, and test prisms were cast for determining resistance to freezing and thawing cycles in accordance with ASTM C 666, Procedure A, and for resistance to scaling from deicing chemicals according to ASTM C 672. The curing methods were water curing and steam curing. The air-void parameters of the hardened concrete were determined on the sawn sections. The test results indicate that non-air-entrained, high-performance concrete with steam curing showed low durability factors. High-performance concrete with water curing performed satisfactorily when subjected to up to 1500 cycles of freezing and thawing. Water-cured, high-performance concrete showed no appreciable scaling after 100 freezing and thawing cycles, showing high resistance to scaling.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 409-426

Subject/Index Terms

Filing Info

  • Accession Number: 00766029
  • Record Type: Publication
  • Report/Paper Numbers: SP 186-24
  • Files: TRIS
  • Created Date: Jul 2 2001 12:00AM