標準號：BS EN 993-18-2002
中文標準名稱：成形致密耐火制品的試驗方法.真空汞法測定顆粒狀材料體積密度
英文標準名稱：Methods of test for dense shaped refractory products - Determination of bulk density of granular materials by the water method with vacuum
標準類型：Q40
發布日期：2002/9/12 12:00:00
實施日期：2002/9/12 12:00:00
中國標準分類號：Q40
國際標準分類號：81.080
適用范圍：This European Standard specifies a method based on water absorption with vacuum for the determination of the bulk density of granular refractory materials (grain bulk density) having a grain size greater than 2 mm. NOTE 1 This method is proposed as an alternative to the method based on mercury displacement with vacuum described in EN 993-17 which is to be used as the reference method because of its reproducibility. However, mercury is known to be a hazardous substance and the method described in this European Standard is recommended for all routine purposes. Nevertheless, depending on the nature of the material tested, the two methods may give different results. NOTE 2 For materials that are sensitive to contact with water, a suitable organic liquid should be used. The immersion liquid should not fractionate at a pressure above the absolute pressure attained in the test. For example, distilled paraffin can be used for hydratable materials.