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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > 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.
Title: Repair Strategy and Evaluation of Materials and Methods for Rehabilitation of Concrete Shells for Two Natural Draft Cooling Towers
Author(s): S. Gebler, P. Nussbaum, W. Dziedzic, J. Glikin, A. Litvin, W. Bilenki, Jr., and J. Stefanik
Publication: Special Publication
Appears on pages(s): 323-362
Keywords: absorption; coatings; compressive strength; cooling towers; damage; deterioration; dynamic modulus of elasticity; freeze-thaw durability; renovating; repairs; saturation; shotcrete; structural analysis; Materials Research
Abstract:Two concrete natural draft cooling towers exhibited honeycombing and freeze-thaw damage. This paper presents results of inspections and laboratory and field tests used to develop cooling tower rehabilitation repair strategies. Different repair materials were evaluated and tested in the laboratory. The repair strategy selected involved measures to dry out the marginally air-entrained saturated tower shell concrete to minimize future freeze-thaw damage and then replace concrete exhibiting honeycombing and condensate leakage with dry-mix shotcrete (gunite). The interior concrete shell was then coated with an impermeable membrane. Six materials for coating the interior shell concrete and two types of shotcrete processes were evaluated.
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