THE EFFECTS OF AGES ON THE SOME MECHANICAL PROPERTIES OF PHYLLOSTACHYSPUBESCENSBAMBOO.

This paper formulates and reviews Indicators of mechanical strength of bamboo such as: vertical compression strength, vertical tensile strength, radial direction bending strength, tangent direction bending strength...is one of the important bases for determining the time to exploit rationally and effectively. In this article, values of mechanical strength have been mentioned above, when the test sample moisture reaches 12%, by different ages of Phyllostachyspubescenshave been studied. The collection of test sample, determine the mechanical properties of bamboo is determined according to standard GB / T 15780 - 1995 of China - Testing methods for physical and mechanical properties of bamboos. According to research results, when the age of Phyllostachyspubescens varies from 1 to 6 years old, the vertical compression strength, vertical tensile strength, radial direction bending strength, tangent direction bending strength,... tend to increase and reach the maximum value when Phyllostachyspubescensat the age of 5 years. When the age of 6 years, Indicators of this mechanical properties tends to decrease