Abstract
The use of composite beams made with traditional concrete and bio-based materials (such as timber and bamboo) is a valuable solution to reduce the environmental impact of the building sector. Timber-Concrete Composite (TCC) beams have been used for decades in structural applications such as new buildings, refurbishment of old timber structures, and bridges. Recently, different researchers suggested composite beams based on engineered bamboo, commonly named Bamboo-Concrete Composite (BCC) beams. This study presents a systematic comparison of structural performances and connection behavior of TCC and BCC beams under short-term static load. TCCs beams are compared to BCC ones using similar shear connectors. The most important aspects of the two composite systems are compared: mechanical behavior of connectors and structural behaviors of full-scale composite beams (e.g., failure modes, connection stiffness, connection shear strength, ultimate load-carrying capacity, maximum deflection and composite efficiency). This comprehensive review indicates that BCC beams have similar or even better structural performances compared with TCC.
Highlights
The development of the Timber-Concrete Composite (TCC) emerged in Europe after the first and second world wars [1] due to the lack of steel for the reinforcement of concrete
As can be seen in Fig. (25), the stability varies for various connections, it is noticeable that generally, the bamboo-concrete composite (BCC) has better stability in terms of stiffness degradation when compared to the TCC
This paper presented a rational comparison of the mechanical properties of connections and bending performances of TCC to the BCC system based on the experimental results available in the literature
Summary
The development of the Timber-Concrete Composite (TCC) emerged in Europe after the first and second world wars [1] due to the lack of steel for the reinforcement of concrete. Several studies have been conducted to optimize the use of timber in the building sector For this reason, TCC has been recognized as a better economical solution than timber, which improves its use in structural applications. Studies were extended to different types of timber products, such as lumber as a timber, Laminated Veneer Lumber (LVL), Cross-Laminated Timber (CLT), and Nail Laminated Timber (NLT) Their use in sustainable construction practice has not been explored yet. 18 The Open Construction & Building Technology Journal, 2021, Volume 15 beams through systematic and rational comparison of available experimental results This pioneering comparison study can provide specific information for the future of BCC on large scale applications.
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