Durability of Concrete Made With Alkali-Activated Slag

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Durability of Concrete Made With Alkali-Activated Slag

Author(s): K. Byfors, G. Klingstedt, V. Lehtonen, H. Pyy, and L. Romben

Publication: Special Publication

Volume: 114

Issue:

Appears on pages(s): 1429-1466

Keywords: activators; alkalies; concrete durability; freezing; microstructure; reinforcing steels; salts; slag cements; strength; Materials Research

Date: 5/1/1989

Abstract:
Durability properties of concrete and mortar based on a special type of alkali-activated slag called F-cement have been studied. The microstructure was found to possess a high occurrence of microcracks that had an obvious influence on the flexural strength and rate of carbonation. The rate of chloride-ion diffusion was about 30 times lower than in the portland cement concrete. Salt scaling was found to depend solely on the water-to-binder ratio and is independent of the air content. Early freezing takes place when the strength exceeds 5 MPa, and F-mortar shows high chemical resistance against solutions of sodium, calcium, and magnesium chloride.