Budiono, Arif Mudianto

Experimental Evaluation of Tali Bamboo Trusses with FRP Connections for Sustainable Structural Applications

Introduction

Experimental evaluation of tali bamboo trusses with frp connections for sustainable structural applications. Evaluate Tali bamboo trusses with FRP connections for sustainable structures. Research shows 2 layers of FRP with PVAc/epoxy optimally withstand 25.2 kN, improving connection strength.

Abstract

Tali Bamboo is a local material that is widely utilized in traditional construction due to its availability, strength, and flexibility. However, weaknesses in the connection system are a major obstacle in its application as a structural element. This research aims to evaluate the strength and stiffness of tali bamboo joints using Fiber Reinforced Polymer (FRP) as joint reinforcement in plane trusses. The method used was experimental testing of three truss models with varying numbers of FRP laminate layers (1, 2, and 3 layers) combined with Polyvinyl Acetate (PVAc) adhesive and epoxy resin. Tests were conducted with center point loading to assess the performance of the connection. The results showed that the connection with 2 layers of FRP was able to withstand the maximum load optimally, or was able to withstand an average maximum load of 25.2 kN with an average deflection of 3.1 cm. The highest value reached 30 kN and a deflection of 4.0 cm, indicating optimal efficiency and strength. The physical properties of tali bamboo in the internode section are weaker than those in the book section, but still generally meet the criteria for structural materials. The implications of this study suggest that the use of double-layered FRP connections in tali bamboo can be an effective solution in improving the performance of plane truss structures, although further testing is required for more complex connections between truss elements.

Review

This study presents an experimental investigation into enhancing the structural performance of tali bamboo trusses, a crucial area given bamboo's potential as a sustainable building material. The abstract clearly articulates the central challenge facing bamboo construction – the inherent weaknesses in traditional connection systems – and proposes a contemporary solution through the integration of Fiber Reinforced Polymer (FRP) as joint reinforcement. The research objective to evaluate the strength and stiffness of tali bamboo joints within plane trusses is well-defined and directly addresses a significant barrier to its wider adoption in modern structural applications. The methodology employed involves experimental testing of three distinct truss models, systematically varying the number of FRP laminate layers (1, 2, and 3) in conjunction with PVAc adhesive and epoxy resin. This comparative approach, using center point loading, is appropriate for assessing the performance of the connections. A key finding, highlighted in the abstract, is the optimal performance achieved with two layers of FRP, which withstood an impressive average maximum load of 25.2 kN and an average deflection of 3.1 cm, with peak values reaching 30 kN and 4.0 cm, respectively. This quantitative data provides strong evidence for the efficacy of the proposed FRP reinforcement. The observation regarding the weaker internode sections compared to book sections also offers valuable insight into the material's structural characteristics. The implications of this research are significant, pointing towards double-layered FRP connections as an effective solution for improving the performance of tali bamboo plane truss structures, thereby contributing to more sustainable construction practices. This aligns well with the study's title and its focus on sustainable structural applications. While the findings are promising, the abstract prudently acknowledges the need for further testing on more complex connections between truss elements. This transparency enhances the credibility of the study and sets a clear direction for future research, underscoring its potential as a foundational step in developing robust and sustainable bamboo-FRP hybrid structures.

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