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Mechanical Properties of the Oriented Strand Board (OSB) Distributed in the Korean Market

  • Eun-Chang KANG (Forest Products and Industry Department, National Institute of Forest Science) ;
  • Min LEE (Forest Products and Industry Department, National Institute of Forest Science) ;
  • Sang-Min LEE (Forest Products and Industry Department, National Institute of Forest Science) ;
  • Se-Hwi PARK (R&D Center, Dongwha Enterprise)
  • Received : 2023.02.21
  • Accepted : 2023.05.26
  • Published : 2023.07.25

Abstract

Oriented strand board (OSB) distributed in Korea was collected, and its mechanical properties were investigated according to the International Organization for Standardization (ISO), Japanese Industrial Standards, and Korean Design Standard. Ten types of OSBs were collected, including six types for walls and others for floors. The thickness swelling, moisture content, and density of each product satisfied the ISO standards. All products showed lower formaldehyde emission values than those of the SE0 grade. The internal bonding strengths of all products, except products B, H, and I, met the ISO standards. However, products A, B, C, F, and H did not satisfy the thickness swelling standard of the load-bearing OSB for use in dry conditions. Products D and G showed heavy duty load-bearing OSB for use in humid conditions in terms of internal bonding and bending strength after boiling. In the nail head pull-through force and lateral nail resistance tests, all products met the standards. In terms of the structural bending performance (four points), the six types of OSBs for walls satisfied the standard for bending strength and modulus of elasticity. All the products for flooring met the standard for bending strength but, except for product G, the products did not meet the standard for modulus of elasticity. Although the results of this study cannot represent the performance of all imported OSBs, considering the above results, the water resistance performance of seven types of OSB products did not meet the standard, and 10 types of products did not match the labeling grades.

Keywords

Acknowledgement

This research was supported by a Research Project (FP0600-2020-01-2020) through the National Institute of Forest Science (NIFoS), Korea.

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