Sand erosion performance of rubber mortar based on Taguchi method

According to the characteristics of sandstorm environment in central and Western Inner Mongolia, the erosion simulation system of wind-blow sand environment was utilized to study the erosion wear behavior of rubber mortar of different rubber particle size and content in sandy environment. An L₁₆(5⁴) Taguchi orthogonal array was adopted to design the experiment, and SEM was used to observe the micro morphology of rubber mortar after erosion. The Taguchi results show that the minimum rubber mortar erosion rate is obtained under the condition of erosion velocity of 17 m/s, rubber particle size of 1.70 mm, rubber content of 5%, impact angle of 45ånd abrasive feed rate of 45 g/min. The abrasive feed rate and erosion velocity are significant factors influencing erosion performance of rubber mortar. Under the same erosion conditions, the erosion rate of each size of the rubber mortar is as follows:1.70 mm rubber mortar < cement mortar < 0.18 mm rubber mortar < 0.42 mm rubber mortar. Rubber mortar erosion is mainly sand on the surface of the cutting and squeezing action, of which 1.70 mm rubber grain has good resistance effects on the sand, 0.42 mm powder particles is easy to spalling, which aggravate the wear of abrasive action.