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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: Repairing a Heavily Fire-Damaged Concrete Turbine Pedestal
Author(s): David D. Dorsch
Publication: Concrete International
Appears on pages(s): 33-38
Keywords: cooling; fire damage; formwork (construction); placing; plants; reinforced concrete; repairs; General
Abstract:Describes large-scale repairs to a fire-damaged reinforced concrete pedestal that supports a power-station generator. The concrete had spalled and cracked to depths ranging from 2 to 24 in. The form-and-pump method of repair was chosen because of the tight spacing of the reinforcing steel and the depth of the material to be repaired. The forming system required a one-sided form that was not supported from below and could contain the dead weight of the concrete plus the pumping pressure. The existing concrete was used for support; rock anchors were drilled into the concrete and coil rods, which were left in place for extra support for the concrete. Concrete was cooled at a nitrogen cooling station to help reduce the shrinkage and cracking that occurs when new concrete is cast against old material.
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