IPC Working Party on Harvesting and Utilization of Poplar and Willow Wood 2nd Conference on Engineered Wood Products based on Poplar/willow Wood León, Spain, September 8th-10th 2016 PROCEEDINGS 2ND CONFERENCE ON ENGINEERED WOOD PRODUCTS BASED ON POPLAR/WILLOW WOOD CEWPPW2 September 8th – 10th 2016 León, Spain Edited by Joris Van Acker Ghent University, Belgium IPC Working Party on Harvesting and Utilization of Poplar and Willow Wood 2nd Conference on Engineered Wood Products based on Poplar/willow Wood León, Spain, September 8th-10th 2016 2nd Conference on Engineered Wood Products based on Poplar/Willow Wood CEWPPW2 September 8th-10th 2016 Conference is linked to the 25th Session of IPC and with the help of the local organiser Garnica plywood taking place in León in Spain. The management of the conference is in the hands of the organisation Pro-Populus. Editor: Prof. Joris VAN ACKER (chairman IPC WP harvesting and utilization) Proceedings of the 2nd Conference on Engineered Wood Products based on Poplar/Willow Wood CEWPPW2 Edited by Ghent University Layout front page: Jan Van den Bulcke Printed by University Press IPC Working Party on Harvesting and Utilization of Poplar and Willow Wood 2nd Conference on Engineered Wood Products based on Poplar/willow Wood León, Spain, September 8th-10th 2016 PREFACE Under the structure of the International Poplar Commission (IPC) the “Working party (WP) on harvesting and utilization of poplar & willow wood” initiated a first conference on Engineered Wood Products Based on Poplar/Willow Wood at the Nanjing Forestry University - PRChina, October 21st-24th 2008. The 2nd conference is again linked to the IPC meeting, now the 25th meeting in Berlin (http://www.fao.org/forestry/ipc/en/). Since the first conference (proceedings available on http://foris.fao.org/static/pdf/ipc/IPCProceedingsNanjing2008.pdf) a lot of innovation and increased attention can be seen in the sector of engineered wood products, in particular related to poplar, aspen and willow. The 2nd Conference on Engineered Wood Products based on Poplar/Willow Wood is organised the 9th – 10th September, 2016 in at the Conference centre of the Parador de León, Plaza de San Marcos, 7 – León, Spain. For IPC a field trip to Garnica Plywood at Valencia de Don Juan is organised prior to the scientific sessions on 8th September, 2016. The president of the company Garnica Plywood, Mr. Pedro Garnica is also the president of Pro- Populus. This European association was created in 2008 and is considered the “European poplar association”, as it is unique in the sense that, for the first time, it gathers growers, promoters and industrial users of poplar for the variety of uses it offers (panels, packaging, energy, etc.). Both the company Garnica Plywood and the organisation Pro-Populus have been key in organizing this conference. The International Poplar Commission (IPC), an FAO technical statutory body on forestry, aims to promote the cultivation, conservation and utilization of members of the family Salicaceae, which includes poplars and willows. The Working Party on Harvesting and Utilization of Poplar and Willow Wood is specifically dedicated to the poplar/willow forestry- wood industry chain and has taken the initiative to organize this conference in León, Spain organized back to back immediately prior to the 25th IPC meeting in Berlin. The organisers and editor would like to thank the speakers for their papers because without them there is no conference. I am sure that everyone involved in the conference from organiser to participant would like to thank the local organisers of Garnica Plywood and Pro-Populus. We hope that you enjoy the conference and find the papers useful in your future work. Prof. Joris VAN ACKER Chairman IPC WP Harvesting & Utilization Ghent University IPC Working Party on Harvesting and Utilization of Poplar and Willow Wood 2nd Conference on Engineered Wood Products based on Poplar/willow Wood León, Spain, September 8th-10th 2016 IPC Working Party on Harvesting and Utilization of Poplar and Willow Wood 2nd Conference on Engineered Wood Products based on Poplar/willow Wood León, Spain, September 8th-10th 2016 Table of contents Phenotypic and genotypic correlations for wood properties of hybrid poplar clones 1 of Southern Quebec Azmul Huda, Ahmed Koubaa, Alain Cloutier, Roger E. Hernández, Pierre Périnet, Yves Fortin Early assessment of poplar and willow wood properties: selection of parameters 15 and their predictability Lieven De Boever, Jan Van den Bulcke, Joris Van Acker Demonstration of the low risk of transferring microorganisms from artificially 25 contaminated poplar crates to foodstuffs Mathilde Montibus, Rached Ismail, Isabelle Le Bayon, Adeline Jasick, Martine Gabille, Florence Aviat, Valérie Michel, Michel Federighi, Magdalena Kutnik Thermal insulating materials made up of poplar wood fibres 37 Pierre Vignon, Mohamad Hobballah, Huyen Tran, Jérôme Moreau, Christine Delisée, Michael Lecourt, Rachid Belalia, Thierry Sanguina Study of the stress-grading of poplar for a structural use 51 Stephan Kesteloot, Manfred Hudel Kiln drying properties of poplar hybrid clones from three growing sites 57 Yves Fortin, Suying Xing, Roger E. Hernández OPTISOUNDWOOD project: enhancing poplar plywood with sound absorption 71 properties Francesco Negro, Corrado Cremonini, Gaetano Castro, Marco Fringuellino, Antonio Spinelli, Guido Callegari, Roberto Zanuttini Durability of exterior wood works in poplar from France in real conditions of use 81 David Lorenzo, Magdalena Kutnik, Juan Fernández-Golfin, Manuel Touza, Manuel Guaita Poplar wood related research in Hungary 89 Róbert Németh, Sándor Fehér, József Ábrahám, Miklós Bak, Norbert Horváth, Szabolcs Komán, Péter Szeles OHT of poplar round wood – the wood’s resistance to white rot 101 Waldemar Perdoch, Stanisław Karpiński, Janusz Zawadzki, Bartłomiej Mazela Potential of thermally modified poplar wood for construction products 107 Lieven De Boever, Jan Van den Bulcke, Joris Van Acker Bending properties of tangentially and radially sawn European aspen and birch 113 wood after industrial scale thermo-mechanical modification Juhani Marttila, Veikko Möttönen, Yağmur Bütün, Henrik Heräjärvi IPC Working Party on Harvesting and Utilization of Poplar and Willow Wood 2nd Conference on Engineered Wood Products based on Poplar/willow Wood León, Spain, September 8th-10th 2016 The Garnica brick: a structural insulated sandwich panel based on modified 125 poplar plywood and an XPS core Marco Andrés Sufrategui, Juan Albiñana, Jaime Alvarez, Oscar Crespo Use of poplar for wood-polymer composites manufacturing 127 Sébastien Migneault, Ahmed Koubaa, Djamila Kada, Ghezalla Tabak, Hadidane Mohamed Mokhtar Poplar and willow wood as source for veneer based products: possibilities and 135 limitations Lieven De Boever, Jan Van den Bulcke, Joris Van Acker Laminated Veneer and Rubber Lumbers (LVRL): manufacturing and physico- 137 mechanical characteristics Xinwu Xu, Jingquan Han, Jining Lv, Changtong Mei Determination of poplar LVL effective modulus of elasticity by modelling peeling 155 and evolution of raw material properties on cambial age basis Stéphane Girardon, Louis Denaud, Guillaume Pot, Joffrey Viguier, Robert Collet Mechanical properties of Laminated Veneer Lumber made from 14 poplar 169 cultivars Louis Denaud, Jean Claude Butaud, Michael Krebs, Rémy Marchal, Istie Rahayu Producing medium density fibreboard based on bamboo-willow 181 Changtong Mei, Wanzhao Li, Rong Han Enhanced potential of poplar and willow for engineered wood products 187 Joris Van Acker, Nele Defoirdt, Jan Van den Bulcke IPC Working Party on Harvesting and Utilization of Poplar and Willow Wood 2nd Conference on Engineered Wood Products based on Poplar/willow Wood León, Spain, September 8th-10th 2016 Phenotypic and genotypic correlations for wood properties of hybrid poplar clones of Southern Quebec ASM Azmul Huda1, Ahmed Koubaa1, Alain Cloutier2, Roger E. Hernández2, Pierre Périnet3, Yves Fortin2 1 Forest Research Institure, Université du Québec en Abitibi-Témiscamingue, 445 Boul. de l'Université, Rouyn-Noranda, Québec, Canada J9X 5E4 [email: [email protected]] 2 Département des sciences du bois et de la forêt, Université Laval, 2425 Rue de la Terrasse, Québec, Canada G1V 0A6 [email: [email protected], [email protected], [email protected]] 3 Direction de la recherche forestière, Ministère des Ressources naturelles du Québec, 2700 Einstein, Québec, Canada G1P 3W8 [email: [email protected] ] Keywords: Hybrid poplar, phenotypic correlations, genotypic correlations, wood anatomical, physical and mechanical properties ABSTRACT This study aims to understand the phenotypic and genotypic correlations among wood anatomical, physical, and mechanical properties of hybrid poplar clones. Samples were taken from seven clones grown in three sites in Southern Quebec, Canada. Five trees per clone were randomly sampled from each site to measure anatomical, physical, and mechanical wood properties. The observed phenotypic and genotypic correlations between these wood properties were moderate to strong, except fiber length and vessel proportion. Genotypic correlations for all wood properties were higher than corresponding phenotypic correlations. Furthermore, fiber length showed weak correlations, whereas, vessel proportion showed strongly negative correlations with all other properties. Strong correlations were also found among fiber proportion, wall thickness, basic density, and mechanical properties.