On Determining the Elasticity Modulus of Moso Bamboo Based on the Static Bend Test Results by Analogy with Wood and Engineering Plastics

Abstract

AbstractThe application of bamboo in the practice of modern construction is considered. The physical and mechanical properties of bamboo, the peculiarities of genera and species of bamboo, the structure of the trunk are described. The publications of ISO (International Organization for Standardization) concerning building codes and rules for the use of bamboos in construction are considered. The backlog in the release of manuals on the use of bamboo as a structural material in construction is determined. The peculiarity of the cross-section of bamboo samples for static bending testing is indicated. To determine the geometric characteristics of the cross-section of the samples, a diagram of a thin-walled ring segment bounded by a sector with a central angle is used. The features of differentiation of cylindrical compartments of the trunk by interstitial diaphragms are considered. Reducing the length of the cylindrical compartments of the bamboo trunk eliminates the possibility of manufacturing samples that do not contain “joints” along the length of the working area of the sample. The paper considers the possibility of using recommendations for determining the mechanical characteristics of wood and plastic composite materials when testing Moso bamboo samples for static bending to define the modulus of elasticity. A series of test samples were made, the geometric characteristics of the cross sections of the samples were determined taking into account the characteristics of the material. An experimental test facility was prepared, bamboo samples were tested for static bending. As supports for bamboo samples, special devices have been selected that allow the ends of the sample to be tightly placed on the surface of these devices.KeywordsMoso bambooTransport infrastructureJointInternodal diaphragmModulus of elasticityTray-likeness/Tray-shapenessStatic bendingSegment of a circular ringa