Title:
Durability of Dry-mix Shotcrete Containing Rapid-Set Accelerations
Author(s):
Steven H. Gebler, Albert Litvin, William J. McLean, and Ray Schutz
Publication:
Materials Journal
Volume:
89
Issue:
3
Appears on pages(s):
259-262
Keywords:
accelerating agents; compressive strength; durability; freeze-thaw durability; mixing; setting (hardening); shotcrete; Materials Research
DOI:
10.14359/2581
Date:
5/1/1992
Abstract:
Dry-mix shotcrete mixtures with and without the addition of rapid-set accelerators were tested for compressive strength development and resistance to freezing and thawing. Results showed that dry-mix shotcrete with rapid-set accelerators lost from a quarter to half of its compressive strength at 28 days as compared to a nonaccelerated control mix. In addition, the dry-mix shotcretes with rapid-set accelerators were judged to be vulnerable to freezing and thawing action. The reference dry-mix shotcrete mixtures without rapid-set accelerators had excellent resistance to freezing and thawing, and developed high compressive strength.