Comparative mechanical characterization of Guadua angustifolia Kunth from Villavicencio and other regions

Abstract

This study presents a comparative analysis of the physical and mechanical properties of Guadua angustifolia Kunth, a bamboo species with significant potential as a sustainable construction material. The research focuses on specimens harvested from Villavicencio in Colombia, a region characterized by high rainfall and low altitude and compares the results with data from five other geographical locations in Colombia. Eight mature culms were subjected to 193 mechanical tests, including parallel and perpendicular compression, shear, tension and bending, following the NTC 5525 standard. The study examined the lower, middle and upper sections of the culms to provide a nuanced understanding of the material's properties. Significant variations occurred in mechanical properties across different culm sections and geographical locations. Notably, the shear strength of Guadua from Villavicencio showed superior performance in the upper section, while the lower and middle sections exhibited moderate behaviour. The study also found correlations between geographical factors (altitude, temperature and precipitation) and mechanical properties, although these relationships require further investigation. This research contributes valuable data to the growing body of knowledge on G. angustifolia, highlighting its potential as a sustainable construction material. The findings underscore the importance of considering culm section and geographical origin when selecting Guadua for structural applications. Furthermore, this study lays the groundwork for future research into standardization of testing methodologies, long-term performance studies and optimization of cultivation practices.