Karol Sikora

Dr. Karol Sikora

University of Wollongong in Dubai
+1
orcid

Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 December 2013 in Construction and Building Materials
Verified
Journal Article
Closed access
AKAgnieszka J. Klemm
Agnieszka J. Klemm
Karol SikoraKarol Sikora
Karol Sikora

1 May 2018 in Construction and Building Materials
Verified
Journal Article
Closed access
XLXingzi Liu
Xingzi Liu
MYMengpei Yan
Mengpei Yan
IGIsaac Galobardes
Isaac Galobardes
Karol SikoraKarol Sikora
Karol Sikora

6 October 2015 in The Journal of Adhesion
Verified
Journal Article
Closed access
Karol SikoraKarol Sikora
Karol Sikora
DMDaniel McPolin
Daniel McPolin
AHAnnette Harte
Annette Harte
This paper addresses the quality of the interface- and edge-bonded joints in layers of cross-laminated timber (CLT) panels. The shear performance was studied to assess the suitability of two different adhesives, polyurethane (PUR) and phenol–resorcinol–formaldehyde (PRF), and to determine the optimum clamping pressure. Since there is no established testing procedure to determine the shear strength of the surface bonds between layers in a CLT panel, block shear tests of specimens in two different configurations were carried out, and further shear tests of edge-bonded specimen in two configurations were performed. Delamination tests were performed on samples which were subjected to accelerated aging to assess the durability of bonds in severe environmental conditions. Both tested adhesives produced boards with shear strength values within the edge-bonding requirements of prEN 16351 for all manufacturing pressures. While the PUR specimens had higher shear strength values, the PRF specimens demonstrated superior durability characteristics in the delamination tests. It seems that the test protocol introduced in this study for crosslam-bonded specimens, cut from a CLT panel, and placed in the shearing tool horizontally, accurately reflects the shearing strength of glue lines in CLT.

1 September 2019 in Journal of Materials in Civil Engineering
Verified
Journal Article
Closed access
WXWeiqi Xing
Weiqi Xing
Jian Li HaoJian Li Hao
Jian Li Hao
Karol SikoraKarol Sikora
Karol Sikora
Tests were conducted of the bonding shear strength of different bamboo configurations in terms of grain direction, adhesive, and clamping pressure. The bonding shear tests were carried out with two basic configurations: glued together with the grain in the same direction, and cross-laminated. Five different adhesives were used: emulsion polymer isocyanate (EPI), polyurethane (PUR), melamine-urea-formaldehyde (MUF), hybrid polymer adhesive (HPA), and polyvinyl acetate (PVA). To assess the optimum value, specimens were prepared with three clamping pressures. According to the test results, the most suitable adhesive for glued laminated bamboo surface is MUF; EPI is not effective for bonding laminated bamboo elements, and PVA performs the best for scrimber produced with cross-laminated bamboo. The results also showed that end grain specimens had the highest bonding shear strengths among the four configurations, and that, in accordance with the properties of raw bamboo, cross-laminated types exhibited similar mechanical characteristics in both directions. It can be concluded that the testing method used for cross laminated timber is also suitable for assessing the shear strength of adhesive bonds for cross-laminated bamboo.

1 August 2017 in Construction and Building Materials
Verified
Journal Article
Closed access
COCaoimhe O'NEill
Caoimhe O'NEill
DMDaniel McPolin
Daniel McPolin
STSu E. Taylor
Su E. Taylor
AHAnnette Harte
Annette Harte
Conan O'CeallaighConan O'Ceallaigh
Conan O'Ceallaigh
Karol SikoraKarol Sikora
Karol Sikora