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Materials 2014, 7(10), 7130-7144; doi:10.3390/ma7107130

Application of Various NDT Methods for the Evaluation of Building Steel Structures for Reuse

Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube 755-8611, Japan
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Received: 11 June 2014 / Revised: 8 August 2014 / Accepted: 11 October 2014 / Published: 22 October 2014
(This article belongs to the Special Issue Recycled Materials)
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Abstract

The reuse system proposed by the authors is an overall business system for realizing a cyclic reuse flow through the processes of design, fabrication, construction, maintenance, demolition and storage. The reuse system is one of the methods to reduce the environmental burden in the field of building steel structures. These buildings are assumed to be demolished within approximately 30 years or more for physical, architectural, economic and social reasons in Japan. In this paper, focusing on building steel structures used for plants, warehouses and offices without fire protection, the performance of steel structural members for reuse is evaluated by a non-destructive test. First, performance evaluation procedures for a non-destructive test, such as mechanical properties, chemical compositions, dimension and degradation, are shown. Tensile strengths are estimated using Vickers hardness measured by a portable ultrasonic hardness tester, and chemical compositions are measured by a portable optical emission spectrometer. The weldability of steel structural members is estimated by carbon equivalent and weld crack sensitivity composition using chemical compositions. Finally, the material grade of structural members of the building steel structure for reuse is estimated based on the proposed procedures. View Full-Text
Keywords: steel structural member; reuse; mechanical properties; rolled section steel; non-destructive test; hardness; chemical composition steel structural member; reuse; mechanical properties; rolled section steel; non-destructive test; hardness; chemical composition
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fujita, M.; Masuda, T. Application of Various NDT Methods for the Evaluation of Building Steel Structures for Reuse. Materials 2014, 7, 7130-7144.

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