PUFJ and FRPU innovative polyurethane bonding systems for wood envelopes in nearly zero energy buildings / Konrad Kwiecień, Klaudia Śliwa Wieczorek, Fabio Rizzo, Arkadiusz Kwiecień, Bogusław Zając ... więcej

PUFJ and FRPU innovative polyurethane bonding systems for wood envelopes in nearly zero energy buildings / Konrad Kwiecień, Klaudia Śliwa Wieczorek, Fabio Rizzo, Arkadiusz Kwiecień, Bogusław Zając // W: International Conference on Wood Adhesives 2022, Portland, Oregon, USA, 11-13 May 2022. Vol. 1 of 2. – LaGrange, Georgia, USA : Forest Products Society (FPS), 2022. – S. 344-351 : rys., schem., tab., wykr. – Bibliogr. s. 351, Abstr. – Wydaw. wg cop. – Data wyd. wg cop. – ISBN 978-1-7138-5744-0

PolyUrethane Flexible Joints (PUFJ) and Fiber Reinforced PolyUrethanes (FRPU) have been manifested their high efficiency in bonding and strengthening of structural elements for last years, assuring simultaneous ... więcej

PolyUrethane Flexible Joints (PUFJ) and Fiber Reinforced PolyUrethanes (FRPU) have been manifested their high efficiency in bonding and strengthening of structural elements for last years, assuring simultaneous transfer of high loads and high deformations. They can be used in structural and non structural bonding of various structural materials as concrete, masonry and wood. Many research and in situ applications confirmed they innovative and unique characteristics in civil engineering. PUFJ and FRPU systems are considering now as testing products in frame of a MEZeroE project (MEZeroE - measuring envelope products and systems contributing to the next generation of healthy nearly-zero-energy buildings) funded by European Commission in Horizon 2020 program. PUFJ and FRPU are proposed as new structural and non structural bonding systems or joints in wood constructions, mainly in envelopes of nearly-zero-energy buildings. PUFJ system can be applied as injection or prefabricated laminates creating wood-to-wood, wood-to-concrete or wood-to-masonry bonds. They can form thin or thick flexible adhesive bondlines with adjusted properties. FRPU system is dedicated quick repair intervention or strengthening as it uses high strength fibers and flexible polyurethane matrix for externally bonded composites. Special polyurethanes using in PUFJ and FRPU can work safely under various loads (strong winds, earthquakes) and manifest stable properties in elevated temperatures. They are dedicated to bonding of CLT panels, where they can replace steel connectors, providing thermal and humid problems and pure resistance to cyclic loads. In the paper, properties of PUFJ and FRPU systems are presented with examples of connections, planned to be tested at Cracow University of Technology in a Pilot Measurement and Validation Line (PM&VL) of the MEZeroE project. Presented connection solutions bond wood elements with other wood, concrete and masonry elements, providing advantageous hydro-thermal properties.