本文件规定了用于型式试验的参考方法，以及在有争议的情况下，用于确定正常重量和轻质骨料的颗粒密度和吸水率的参考方法。其他方法可用于其他目的，如工厂生产控制，前提是与参考方法建立了适当的工作关系。为了方便起见，本文还介绍了其他一些方法。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies the reference methods used for type testing and in case of dispute, for the determination of particle density and water absorption of normal weight and lightweight aggregates. Other methods can be used for other purposes, such as factory production control, provided that an appropriate working relationship with the reference method has been established. For convenience, some of these other methods are also described in this document.All current amendments available at time of purchase are included with the purchase of this document.