Characterization of Internal Defects and Fiber Distribution of BFRC Based on the Digital Image Processing Technology

Adding basalt fiber into concrete can significantly improve its mechanical properties. In order to explore the influence of content on uniaxial compressive strength and splitting tensile mechanism action, this paper conducts tests three kinds specimens with different obtains relationship between macro properties content. At same time, help CT scanning equipment digital image processing technology, microstructure groups is reconstructed, pore, crack, distribution are quantitatively described using calculation function Avizo reconstruction software. The results show that when optimal 3 kg/m3, improvement rates 31.9% 23.7%, respectively. network structure formed by in has best compactness least number pores, an average sphericity 0.89 pore volume 20.26 μm3. Through analysis, it was found initial defects exist form addition will destroy large size concrete, change distribution, increase sphericity; a three-dimensional network, defect area parallel direction arrangement.