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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.
Showing 1-5 of 13 Abstracts search results
Document:
SP85-02
Date:
April 1, 1985
Author(s):
James R. Clifton
Publication:
Symposium Papers
Volume:
85
Abstract:
This paper describes nondestructive evaluation (NDE) methods that can be used in assessing the condition of concrete and masonry materials and components in structures being rehabilitated or preserved. Metal reinforcement is also included. The appropriate use of NDE methods is discussed and a recommended approach to selecting NDE methods for specific situations is given. NDE methods are briefly described based on their principle of operation, information they provide, applications, expertise required to use them, and advantages and limitation to their use.
DOI:
10.14359/6535
SP85-10
Stephen H. Tsui
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.
10.14359/6543
SP85-09
Theodore Prudon and Jerry Stockbridge
The 53-story Woolworth Building in New York was designed by Cass Gilbert. Ornamental Significant deterioration in the highly terra cotta facade necessitated the extensive renovation program which was completed in 1981, Extensive field and laboratorv testing was performed to develop the optimum selected utilized un the actual facade pi repair scheme. The its formed in molds t eces.precast concrete system taken from impressions
10.14359/6542
SP85-06
Dov Kaminetzky
The various steps that must be taken in order to or restored are described. After the history of the structure has been researched, a condition survey of the structure and its foundations should be performed and supplemented with a geometry Laboratory testing of material samples then follow with structural analysis carried out to determine final structural adequacy and economical feasibility. A case history is described, The paper is concluded with recommendations for the establishment of an ACI guideline and additional research.
10.14359/6539
SP85-03
Edward Cohen, Norval Dobbs, and William Combs
This paper describes the engineering procedures in the renovation of Kresge Auditorium which is located at the Massachusetts Institute of Technology in Boston. Described are inspection procedures used to determine any structural deterioration which may have occured since the building's inception. These procedures included visual inspection to determine cracking and other aspects which would possibly reduce the structure strength, pulse-echo test and chemical and petrographic tests of the structure's concrete as well as continuous monitoring of structure motions during remedial construction. To assist in this remedial work, a series of finite element analyses were performed to determine stress levels within the structure. These analyses considered initial construction stresses as well as increased stresses due to structure deterioration. Based on the above, a series of structural modifications were developed and implemented in the structure restoration.
10.14359/6536
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