1,721,083 research outputs found
Fatigue behavior of beech and pine wood modified with low molecular weight phenol-formaldehyde resin
No full textModification of wood improves certain properties of natural wood and presents competitive alternatives to synthetic materials that may have larger environmental impacts. One aspect of modified wood that is currently not fully understood is the dynamic performance and how it is affected by the modification process. In this study, lowmolecular weight phenol formaldehyde (PF) resin was applied to Scots pine (Pinus sylvestris L.) and European beech (Fagus sylvatica L.) wood. The effect of this modification was evaluated using a three-point bending test undergoing cyclic loading. Compared to reference samples, modified wood showed higher static performance but revealed a reduction in cyclic fatigue strength (9% for pine and 14% for beech). Cyclic fatigue strength of unmodified wood was found to be 67% of the static modulus of rupture for both species. With PF resin modification, the fatigue strength dropped to 58% for pine and 53% for beech. While fatigue strength decreased, there was no reduction in cyclic modulus or change in the creep rate within the stationary creep phase. It is important to consider the reduction in fatigue strength when using PF modified wood for any construction purposes with expected cyclic loading conditions
Waste wood management and processing - opportunities for reducing the environmental impact of ports
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Evaluation of the environmental impacts of paper production in accordance with ISO 14025 in the paper mill in the Bío Bío, Chile
Full text linkCritical Appraisal of Building Materials
No full textThe significant role for sustainable wood was discussed within both the New European Bauhaus and the wider strategy to tackle climate change at a high-level meeting held 9 June 2022 in the Vatican. Hosted by the Pontifical Academy of Science and Bauhaus Earth, the event also featured the Wood4Bauhaus Alliance.
The building sector needs a revolution: it must drive down its excessive material use and harmful carbon emissions escalating climate change. Wood and other nature-based materials sequester and store carbon in multiple long-life products, which can foster reuse, remanufacture and recycling for decades. They represent a tremendous lever for the EU Green Deal and therefore need to be upscaled fast in the construction and renovation markets. Innovation and recovery of traditional woodworking knowledge will lead this revolution. A main driver will be demonstration projects to showcase the various solutions already existing in the market and to bring innovations to market readiness.
The presentation points out the role of building materials and their benefits they bring to sustainable construction and the sustainable development of society. The New European Bauhaus has rightly focused on nature-based materials such as wood, leading the way to a real paradigm shift in construction, precisely because in wood we can have hope
The New European Bauhaus Academy Pioneer Hub for Sustainable Built Environments with Renewable Materials
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