Abstract： To precisely characterize the surface profile of corroded steel bars, a calculating model of fractal dimension and scale coefficient for the crosssectional diameter of corroded steel bars was derived based on structure function method. Four steel specimens with different corrosion rates were obtained from concrete beams eroded by chloride salt. Utilizing micrometer to measure the crosssectional diameter, the distribution characteristics were analyzed. The results show that the diameter of corroded steel bar does not reject normal distribution, lognormal distribution and Weibull distribution. The fractal dimension and the scale coefficient are calculated by derived calculating model, and the fractal dimension of crosssectional diameter is positively correlated with rebar corrosion rate. Combining with fractal dimension and scale coefficient, the unified relationship between absolute measurement and similar measurement of surface profile of corroded steel bars can be realized by the characteristic parameter of corroded steel bars, which helps to characterize the surface profile of corroded steel bars more precisely.
陆春华, 杨金木, 延永东, 傅巧瑛. 基于分形理论的锈蚀钢筋表面轮廓分布特征[J]. 江苏大学学报（自然科学版）, 2018, 39(1): 102-107.
LU Chun-Hua, YANG Jin-Mu, YAN Yong-Dong, FU Qiao-Ying. Surface profile distribution characteristics of corroded
steel bars based on fractal theory[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2018, 39(1): 102-107.
2018, Vol. 39 
