abstract In this study, we present a method that employed ultrasound to impose vibration on the surfaces of cementitious materials at the early stage of hydration to form a hardening layer and improve the surface hardness. The formation mechanism of the ultrasonic hardening layer (UHL) was analyzed, and the density and surface hardness of the UHL were measured. An experimental study was carried out to determine the effect of the UHL on improving the wind-blown sand erosion resistance of cementitious materials. Experimental data show that the UHL has a density 3.3% greater and a hardness 136% greater than that of the contrast samples after 28-days of curing. Wind-blown sand erosion tests data show that to the specimens with 28-days curing age, the UHL can improve the erosion resistance for 12.8–24.1% versus that of the contrast in a 30-min erosion procedure.

中文翻译：

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超声波表面处理提高胶凝材料抗风沙侵蚀能力

摘要 在本研究中，我们提出了一种在水化初期利用超声波对胶结材料表面施加振动以形成硬化层并提高表面硬度的方法。分析了超声硬化层（UHL）的形成机理，测量了超声硬化层的密度和表面硬度。进行了一项实验研究，以确定 UHL 对提高胶凝材料抗风沙侵蚀能力的影响。实验数据表明，固化28天后，UHL的密度比对比样品高3.3%，硬度高136%。风沙侵蚀试验数据表明，对于养护龄期为28天的试件，UHL可提高12.8-24天的抗侵蚀能力。