GB/T 208-2014 in English

《GB/T 208-2014水泥密度测定方法》由TC184（全国水泥标准化技术委员会）归口，主管部门为中国建筑材料联合会。
本标准规定了水泥密度测定的方法原理、仪器及材料、测定步骤和结果计算等。
本标准适用于测定水泥的密度,也适用于指定采用本方法的其他粉体物料密度的测定。

1 Scope

This standard specifies the test method principle, instruments and materials, determination procedures, result calculation and the like for determining cement density.

This standard is applicable to the determination of cement density as well as other powdered material density required to use this method.

2 Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB 253 Kerosine

3 Terms and Definitions

For the purposes of this document, the following term and definition apply.

3.1

cement density

mass of cement per unit volume

4 Test Method Principle

Cement with a certain amount of mass is poured into a Le chatelier flask filled with a sufficient amount of liquid medium. The volume of the liquid shall be sufficient to infiltrate the cement particles. According to Archimedes' law, the volume of cement particles is equal to that of liquid it displaces, and so the mass of cement per unit volume is calculated, namely density. During the test, anhydrous kerosine or other liquids that will not react with cement shall be adopted as liquid medium.

5 Instruments and Materials

Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Test Method Principle
5 Instruments and Materials
6 Determination Procedures
7 Result Calculation