Abstract
Adhesives and metal fasteners play important roles in the composition and connections of engineered wood products (EWPs) such as cross-laminated timber and glue-laminated timber in the building construction industry. However, due to their petroleum-based nature, adhesives can cause toxic gas emissions, while metal fasteners compromise the end-of-life disposal and reusability of EWPs. These issues adversely affect the sustainable material properties of EWPs. Numerous studies have been conducted in the literature on the technological, ecological, social, and economic aspects of EWPs in construction with different construction solutions, but no studies have been conducted to evaluate the technical performance of dovetail wood board elements (DWBE) in multi-story or tall building construction. This study focuses on adhesive- and metal fastener-free DWBE as sustainable material alternatives for ecologically sensitive engineering solutions. Various preliminary design proposals are presented for DWBE using architectural modeling programs as an environmentally friendly approach intended for use in the timber construction industry. The research findings are based on a theoretical approach that has not yet been practically tested but is proposed considering existing construction practices that need further investigation, including technical performance tests. It is believed that this paper will contribute to the promotion and diffusion of DWBE for more diverse and innovative architectural and structural applications, particularly in multi-story timber building construction, as one of the key tools in tackling climate change challenges.
Highlights
Adhesive bonding is among the key factors, and adhesives play an important role in engineered wood products (EWPs), especially by helping to protect the wood, enabling the structure to be strong and light, and preventing shrinkage and expansion caused by natural humidity [12,13,14,15]
The use of adhesives raises some concerns about sustainability, recyclability, further processing, and wider environmental impact due to toxic gas emissions (e.g., VOC emissions and formaldehyde) during their lifetime and when burning from their petroleum-based ingredients [16,17,18,19,20]
The innovativeness of dovetail wood board elements (DWBE) is based on a new way of combining the understanding of the characteristics of wood and its potential, traditional woodworking skills, the mechanical ability to mill efficiently and exactly large wood boards, digital machining control, and digital design
Summary
(Figure 1), the 84 m and 24-story HoHo (Austria, 2020) [9] (Figure 2), and the 49 m and. With the standardization of the construction industry, are often employed as a connection in EWPs for contemporary timber buildings replacing conventional wood-to-wood assemblies [11]. In this context, adhesive bonding is among the key factors, and adhesives play an important role in EWPs, especially by helping to protect the wood, enabling the structure to be strong and light, and preventing shrinkage and expansion caused by natural humidity [12,13,14,15].
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