科研之友
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摘要
With the increasing depth of coal mining in China, there is an immediate need to improve the strength and durability of high performance concrete used in deep topsoil mine shafts. Based on computer tomography (CT), the micro-mechanical behavior of C100 high-performance concrete samples used in the shaft of deep topsoil was investigated, and the courses of the origination and development of cracks and links were analyzed under uniaxial compression. Using the box-counting dimension method, the surface fractal dimensions of its cracks were calculated. On the basis of the results, the relationship among the stress load, the crack development and the fractal dimensions was found. The test results show that the C100 high-performance concrete has high intensity; and with the increase of the stress load, the breakage of concrete deepens, and the degree of bending increases, so the surface fractal dimension of the crack also increases.
- 出版日期2009
- 单位中国矿业大学（北京）
