本标准规定了在预期坍落度小于10 mm且骨料标称尺寸不超过40 mm的情况下，确定混凝土压实度指数的方法。注:本标准可能涉及危险材料、操作和设备。本标准并非旨在解决与其使用相关的所有安全问题。本标准的使用者有责任在使用前建立适当的安全和健康实践，并确定监管限制的适用性。

​This Standard sets out the method for determining the compactibility index, for concrete, where the expected slump is less than 10 mm and the nominal size of aggregate does not exceed 40 mm.NOTE: This Standard may involve hazardous materials, operations, and equipment. This Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.