Barriers to the Effective Adhesion of High-Density Hardwood Timbers for Glue-Laminated Beams in Australia

A number of international timbers of high commercial importance are extremely difficult to glue, which is significantly hindering access to global market opportunities for engineered wood products, especially for heavily demanded structural products. Some particularly problematic timbers in Australia are the dominant commercial hardwood species, including spotted gum (Corymbia spp.) and Darwin stringybark (Eucalyptus tetrodonta). These species are renowned for their very high mechanical properties, natural durability and attractive aesthetic appeal. However, they are notoriously difficult to glue, especially for sawn laminate-based engineered wood products, such as structural glue-laminated beams. Despite considerable effort and testing of diverse internationally established best-practice approaches to improve adhesion, glue-laminated beam samples of these timbers still frequently fail to meet the requirements of the relevant standard, mainly due to excessive glue line delamination. This paper discusses the key barriers to effective adhesion of these high-density timbers and particularly emphasises the necessity of achieving greater adhesive penetration. Greater adhesive penetration is required to enhance mechanical interlocking, entanglement and molecular interactions between the adhesive and the wood to achieve stronger and more durable bonds. Potential solutions to enhance adhesive penetration, as well as to improve gluability in general, are discussed in terms of their likelihood to satisfactorily prevent delamination and the potential to be applied at an industrial scale. This new fundamental understanding will assist the development of solutions, allowing industry to commercialise newly engineered wood products made from high-density timbers

Using the IUCN Red List to map threats to terrestrial vertebrates at global scale

Abstract: The Anthropocene is characterized by unparalleled human impact on other species, potentially ushering in the sixth mass extinction. Yet mitigation efforts remain hampered by limited information on the spatial patterns and intensity of the threats driving global biodiversity loss. Here we use expert-derived information from the International Union for Conservation of Nature Red List on threats to 23,271 species, representing all terrestrial amphibians, birds and mammals, to generate global maps of the six major threats to these groups: agriculture, hunting and trapping, logging, pollution, invasive species, and climate change. Our results show that agriculture and logging are pervasive in the tropics and that hunting and trapping is the most geographically widespread threat to mammals and birds. Additionally, current representations of human pressure underestimate the overall pressure on biodiversity, due to the exclusion of threats such as hunting and climate change. Alarmingly, this is particularly the case in areas of the highest biodiversity importance

Strategic partnerships for transformational change towards a sustainable society

Today, global socio-ecological problems are too complex and urgent for isolated actions, and cross-sector collaboration is increasingly required to generate transformational change towards a sustainable future. Partnerships between businesses and civil society organisations (CSOs) in particular have the potential to achieve the required change for sustainability. However, the ‘backcasting’ approach used in this study highlights a gap between current approaches and what partnerships might look like in a sustainable future. Research draws on literature, eighteen interviews and an action research project with Interface Europe. Results indicate that: 1) in the current paradigm shift, collaboration provides a competitive advantage; 2) individual, organisational and societal benefits of partnering are significant; 3) understanding the art and science of partnering is needed to make them work 4) organisational development and strategy affect partnership type and outcomes; 5) Corporate Social Responsibility efforts initiate cross-sector partnerships, but are responsive and fall short of being strategic; 6) articulation of visions for a sustainable future is rare and; 7) most partnerships are not aligned with core business strategies. In conclusion, dialogue across all sectors is advocated to co-create a sustainable future and The Natural Step Framework is recommended to align business planning and partnership strategies with sustainability.Andrew Outhwaite ([email protected]) Miriam Karell ([email protected]) Richard Blume ([email protected]) Website http://partnerships4SSD.blogspot.com</p

Strategic partnerships for transformational change towards a sustainable society

Today, global socio-ecological problems are too complex and urgent for isolated actions, and cross-sector collaboration is increasingly required to generate transformational change towards a sustainable future. Partnerships between businesses and civil society organisations (CSOs) in particular have the potential to achieve the required change for sustainability. However, the ‘backcasting’ approach used in this study highlights a gap between current approaches and what partnerships might look like in a sustainable future. Research draws on literature, eighteen interviews and an action research project with Interface Europe. Results indicate that: 1) in the current paradigm shift, collaboration provides a competitive advantage; 2) individual, organisational and societal benefits of partnering are significant; 3) understanding the art and science of partnering is needed to make them work 4) organisational development and strategy affect partnership type and outcomes; 5) Corporate Social Responsibility efforts initiate cross-sector partnerships, but are responsive and fall short of being strategic; 6) articulation of visions for a sustainable future is rare and; 7) most partnerships are not aligned with core business strategies. In conclusion, dialogue across all sectors is advocated to co-create a sustainable future and The Natural Step Framework is recommended to align business planning and partnership strategies with sustainability.Andrew Outhwaite ([email protected]) Miriam Karell ([email protected]) Richard Blume ([email protected]) Website http://partnerships4SSD.blogspot.com</p

Advanced Leadership in an Integrated Children's Service Environment : how academic poster presentations have facilitated developments in multiagency teamwork and professional learning and dissemination

This paper outlines and evaluates how the Advanced Leadership in Children’s Service Education (ALICSE) programme took place between 2010 and 2015 across England, UK. In particular, using data gathered from the East Midlands cohort, it outlines how senior leaders across areas of children’s services (from health, education, local authority, legal and policing sectors) developed integrated leadership practices which supported marginalized children and their families through a policy initiative that supported these leaders to come together in a multi-disciplinary environment to learn a common professional language. These senior leaders achieved 30 credits towards Level 7 (Masters) degrees, from this programme, that were little used until different assessment strategies were developed. This paper traces the assessment methods that enabled these senior leaders to achieve

Barriers to the Effective Adhesion of High-Density Hardwood Timbers for Glue-Laminated Beams in Australia

A number of international timbers of high commercial importance are extremely difficult to glue, which is significantly hindering access to global market opportunities for engineered wood products, especially for heavily demanded structural products. Some particularly problematic timbers in Australia are the dominant commercial hardwood species, including spotted gum (Corymbia spp.) and Darwin stringybark (Eucalyptus tetrodonta). These species are renowned for their very high mechanical properties, natural durability and attractive aesthetic appeal. However, they are notoriously difficult to glue, especially for sawn laminate-based engineered wood products, such as structural glue-laminated beams. Despite considerable effort and testing of diverse internationally established best-practice approaches to improve adhesion, glue-laminated beam samples of these timbers still frequently fail to meet the requirements of the relevant standard, mainly due to excessive glue line delamination. This paper discusses the key barriers to effective adhesion of these high-density timbers and particularly emphasises the necessity of achieving greater adhesive penetration. Greater adhesive penetration is required to enhance mechanical interlocking, entanglement and molecular interactions between the adhesive and the wood to achieve stronger and more durable bonds. Potential solutions to enhance adhesive penetration, as well as to improve gluability in general, are discussed in terms of their likelihood to satisfactorily prevent delamination and the potential to be applied at an industrial scale. This new fundamental understanding will assist the development of solutions, allowing industry to commercialise newly engineered wood products made from high-density timbers