Title:
Restoration of a Concrete Clarifier Structure
Author(s):
Stephen H. Tsui
Publication:
Symposium Paper
Volume:
85
Issue:
Appears on pages(s):
229-238
Keywords:
cracking (fracturing); patching;
concrete; repairs; scaling; seepage; thermal stresses;
proofing; water tanks. --
reinfo
water-
rced
DOI:
10.14359/6543
Date:
4/1/1985
Abstract:
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.