Restoration of a Concrete Clarifier Structure


  • 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: Restoration of a Concrete Clarifier Structure

Author(s): Stephen H. Tsui

Publication: Special Publication

Volume: 85


Appears on pages(s): 229-238

Keywords: cracking (fracturing); patching; concrete; repairs; scaling; seepage; thermal stresses; proofing; water tanks. -- reinfo water- rced

Date: 4/1/1985

This paper reports the structural investigation, concrete testing, and rehabilitation program for a concrete clarifier in a water treatment plant at Belle River, Ontario, Canada. This plant was constructed in 1945 with non-air entrained, site mixed concrete. Extensive concrete scaling and spalling, traces of leakage and random cracking were observed on the tank wall surfaces. Both analytical methods and in-situ testing were employed to evaluate the structural adequacy of the clarifier. removal of deteriorated concrete, Remedial works involving construction of an exterior semi-circular protective concrete wall with buttresses plus repairs to the interior wall were completed in July, 1981.