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在我国,应用离心工艺生产水泥制品已有卅多年的历史了。迄今,离心及其复合工艺已在电杆、水管、管桩及管柱等各种水泥制品中得到广泛采用。笔者根据工作中的体会试对此种成型工艺的基本原理作些初步探讨,文中谬误之处,请批评指正。一、在旋转运动下混凝土的物质状态探讨混凝土离心工艺的基本原理应先从了解混凝土材料着手。在离心成型前,混凝土是由水泥、砂、石及水组成的松散混合体。其中砂石是大小不等的粒状固体,没有流动性;而由水泥、砂与水调合成的水泥砂浆是具有一定流动性的胶状物质。后者促成
In China, the application of centrifugal technology to produce cement products has a history of more than 20 years. So far, centrifugal and composite processes have been widely adopted in various cement products such as poles, pipes, pipe piles, and pipe columns. The author made some preliminary discussions on the basic principles of this molding process based on the experience in the work. For the errors in the text, please criticize and correct me. First, the material state of the concrete under the rotating motion The basic principle of the concrete centrifugal process should begin with understanding the concrete material. Prior to centrifugal molding, concrete is a loose mix of cement, sand, stone, and water. Among them, sand and gravel are granular solids of different sizes and have no fluidity; cement mortars prepared from cement, sand and water are colloidal substances with certain fluidity. The latter contributes