The basic properties ( including basic and air-dried density, the shrinkage rate, the tensile strength and the tensile modulus of elasticity parallel to grain) of Moso bamboo at different locations were studied. 毛竹的气干密度、基本密度、弦向干缩率、顺纹抗拉弹性模量和顺纹抗拉强度从竹青向竹黄方向变异很大,呈逐渐降低的趋势。
In air-dried condition, the parameter n increased with the increase of confining pressure for both peak and residual strength. 而且在气干状态下,不管是峰值强度还是残余强度的n值均随着围压的增加而增加。
Analysis of disturbed soil with natural moisture and air-dried soil shear strength 天然含水量的扰动土与风干土抗剪强度的分析
In this paper, rheological experimental study of granite is done in a saturated state, and comparison is made with that of air-dried state. Important data are obtained about strength and deformation properties of granite in the given condition. 鉴于此,开展了花岗岩在饱水状态下流变特性的试验研究,并与其风干状态作了对比,在强度和变形特性方面获得了重要的资料。
In physical and mechanical indexes, the basic density, air-dried density, compression strength parallel to grain, MOR, MOE and toughness of mature wood are higher than that of juvenile wood. The shrinkages of juvenile wood are higher than that of mature wood. 在物理力学性质指标中成熟材的基本密度、气干密度、顺纹抗压强度、抗弯强度、抗弯弹性模量及冲击韧性高于幼龄材;而幼龄材全缩率高于成熟材。