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Quality assurance of concrete foundation elements using an ultrasonic evaluation technique

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This paper presents the approach and results adopted in a proactive quality assurance testing technique which was used to inspect, in a non-destructive manner, the integrity and homogeneity of over 200 different in-situ cast concrete foundation elements (ie bored piles, concrete barrette piles and diaphragm wall panels) in various Hong Kong construction sites. The test results were obtained from both public and private buildings and civil engineering projects in Hong Kong. These results show the effectiveness of the use of the Cross-hole Sonic Logging (CSL) method in revealing the different kinds of defects (such as honeycombing, voids, soil inclusions etc.) found during the construction process which under other forms of testing would otherwise remain undiscovered.
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Document Type: Research Article

Affiliations: 1: Department of Manufacturing Engineering and Engineering Management, The City University of Hong Kong. 2: Department of Building and Real Estate, The Hong Kong Polytechnic University

Publication date: June 1, 2006

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