Abstract
In the context of global sustainable development, the use of natural and renewable bamboo as a building material is of great significance for building engineering. As an important part of bamboo, there is still a lack of systematic research on the effect of bamboo nodes on the mechanical properties of bamboo. In this paper, compression parallel to the grain of the bamboo, bending, tensile parallel to the grain, shear parallel to the grain, compression perpendicular to the grain and tensile perpendicular to the grain tests of an entire bamboo culm of P. edulis bamboo were carried out, and the effects of bamboo nodes on moisture content, bearing capacity and mechanical properties were analyzed. The relationship between the mechanical properties and standardized parameters of the node and internode specimens was established. A conversion method of mechanical properties of the same test type was proposed, and a conversion method among different mechanical properties was proposed. The bamboo was graded by tensile strength parallel to the grain. The results show that bamboo nodes have an obvious effect on the moisture content. Bamboo nodes have different effects on the bearing capacity and mechanical properties of different types of specimens. The mechanical properties of P. edulis bamboo can be predicted by the relationship between the mechanical properties and the standardized parameters and the mechanical property conversion method. The strength classification of P. edulis bamboo can be predicted by standardized parameters.
Highlights
The main building materials in China include masonry, concrete and steel, which are nonrenewable and polluting
Bamboo is rich in resources, and it has the advantages of a short growth cycle, a high ratio of strength to weight, a high ratio of rigidity to weight, good toughness and so on, which is called “plant reinforcement” and is an ideal new green building material [1,2,3,4,5]
It is of great significance to study how to utilize the structure of the original bamboo, and a clear grasp of the mechanical properties of the original bamboo is the basis of engineering applications
Summary
The main building materials in China include masonry, concrete and steel, which are nonrenewable and polluting. With the implementation of sustainable development strategies, the application of new building materials is very important. Bamboo is rich in resources, and it has the advantages of a short growth cycle, a high ratio of strength to weight, a high ratio of rigidity to weight, good toughness and so on, which is called “plant reinforcement” and is an ideal new green building material [1,2,3,4,5]. The typical achievements include the effects of moisture content, bamboo age, height, wall thickness, diameter and density on the properties of original bamboo [6,7,8,9,10]; the properties and analysis of recombined bamboo and glued bamboo [11,12,13]; and the composite components of bamboo and other materials [14,15,16,17,18]. As an important part of bamboo, the effect of bamboo nodes on the mechanical properties of bamboo, the effect of bamboo nodes on the mechanical properties of bamboo remains to bamboo remains to be studied
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