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Concrete Rehabilitation Options and Solutions

by Ralph G. Oesterle, Portland Cement Assoc, Analytical, Design Section, Skokie, IL, USA,



Document Type: Proceeding Paper

Part of: Rebuilding America: Infrastructure Rehabilitation

Abstract:

This paper demonstrates the basic steps for a successful rehabilitation program using a case study of the rehabilitation work for the NASA/JPL 64-meter deep space communication antenna. Service life of the concrete foundation supporting the antenna was threatened by alkali-silica reactivity. An investigative project was carried out by engineers and materials experts from the Construction Technology Laboratories working in conjunction with engineers from the Jet Propulsion Laboratory to evaluate the structure and recommend repairs. Methods of diagnosis of the source of distress using nondestructive testing and computer analyses are discussed.

Subject Headings: Rehabilitation | Concrete | Antennas | Nondestructive tests | Laboratory tests | Foundation construction | Construction methods

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