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Published VersionCC BY V4.0, Open Access
Journal article
Influence of wet-dry cycles on the withdrawal capacity and corrosion of zinc electroplated self-tapping screws in CCA-treated and untreated Southern pine
Case Studies in Construction Materials, Vol.19, pp.1-13
2023
Abstract
Fastener products are commonly exported to different continents, and it is important to understand their performance in local timber species and construction practices. This paper investigates the effects of cyclic moisture changes on the withdrawal performance of yellow-zinc and nickel-zinc coated European screws in Australian copper chrome arsenate (CCA) treated Southern Pine, up to a maximum of 24 cycles. A 68–78% loss of the initial withdrawal strength was observed after three cycles, but this was recovered after twelve cycles. Overall, screws lost at least 50% of their initial strength after 24 cycles, regardless of the treatment or fastener coating. The corrosion resistance of nickel-zinc screws in CCA-treated timber was superior to that of yellow-zinc screws in the first three cycles, but the difference disappeared as the moisture cycle number increased. In CCA-treated timber, the corrosion rates of yellow-zinc screws were 40% higher than those in untreated timber. Although nickel-zinc screws were relatively more corrosion-resistant than yellow-zinc screws, the strength loss caused by corrosion confirms that the selected screws are best suited for indoor use. Finally, following a comparative analysis of test results, some recommendations were made in this paper for future research.
Details
- Title
- Influence of wet-dry cycles on the withdrawal capacity and corrosion of zinc electroplated self-tapping screws in CCA-treated and untreated Southern pine
- Authors
- Zidi Yan (Corresponding Author) - The University of QueenslandLisa-Mareike Ottenhaus - The University of QueenslandLuis Yermán - The University of QueenslandJohann Scheibenreiter - Schmid Schrauben Hainfeld GmbH (Austria)
- Publication details
- Case Studies in Construction Materials, Vol.19, pp.1-13
- Publisher
- Elsevier BV
- Date published
- 2023
- DOI
- 10.1016/j.cscm.2023.e02429
- ISSN
- 2214-5095
- Copyright note
- © 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
- Data Availability
- Data will be made available on request.
- Grant note
- This research was jointly funded by the Faculty of Engineering, Architecture, and Information Technology (EAIT) and the School of Civil Engineering of The University of Queensland. Schmid Schrauben Hainfeld GmbH and SHERPA Connection Systems GmbH are gratefully acknowledged for providing the screws.
- Organisation Unit
- National Centre for Timber Durability and Design Life
- Language
- English
- Record Identifier
- 991076697102621
- Output Type
- Journal article
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- Collaboration types
- International collaboration
- Web Of Science research areas
- Construction & Building Technology
- Engineering, Civil
- Materials Science, Multidisciplinary