近年来,为制备高质量的混凝土混合料,搅拌技术的研究开发迅速兴起,其中发展最快的是二次搅拌和 SEC 混凝土(水泥裹砂法)。与此同时,在混凝土搅拌机方面,适用于二次搅拌的各种高效率搅拌机和连续搅拌机诞生了,与这些新技术相适应的调整砂子表面含水量的砂子控制装置也相继出现,为建立和完善新的混凝土制造技术作出 In recent years, in order to prepare high-quality concrete mixes, the research and development of stirring technology has rapidly emerged, among which the fastest-growing is the secondary mixing and SEC concrete (cement sandblasting). At the same time, in the area of ​​concrete mixers, a variety of high-efficiency mixers and continuous mixers for secondary agitation were born, and sand control devices adapted to these new technologies to adjust the surface water content of sand also emerged one after another for the establishment and improvement. New concrete manufacturing technology made