Title: Durability of Dry-Mix Shotcrete

Author(s): G. W. Seegebrecht, A. Litvin, and S. Gebler

Publication: Commentary Reference

Volume:

Issue:

Appears on pages(s): 47-50

Keywords: absorption; air entrainment; chlorides; compressive strength; durability; freeze-thaw durability; permeability; shotcrete; Materials Research

DOI:

Date: 10/1/1989

Abstract:
Dry-mix shotcrete specimens sawed from field-shot panels were tested for freeze-thaw durability, resistance to chloride-ion penetration, compressive strength, air-void system characteristics, and absorption. Results showed that characteristics of the air-void systems, relatively high compressive strength, and low permeability resulted in freeze-thaw resistance in a fresh-water environment comparable to that of properly air-entrained concrete. However, for saltwater exposure in a freeze-thaw environment, dry-mix shotcrete made with portland cement may require treatment with sealers or coatings, or greater shotcrete cover may be needed to protect embedded steel reinforcement.