混凝土搅拌设备和工艺在不断的改进。西德生产的固定式搅拌机的绝大多数是强制式搅拌机,自落式搅拌机只提供小容量的产品(100L及以下)。强制式搅拌机可搅拌各种强度的混凝土,而且在搅拌时间较短情况下,仍保证取得均质混凝土。它除了上述优点之外,也具有缺点:电耗量和金属用量大,不能搅拌骨 Concrete mixing equipment and processes are constantly improving. The vast majority of stationary mixers manufactured in West Germany are forced mixers, and self-dropping mixers provide only small capacity products (100L and below). Forced mixers can stir concrete of various strengths and still ensure homogenous concrete with short mixing times. In addition to the above advantages, it also has disadvantages: The power consumption and the amount of metal are too large to stir the bone.