国产日韩欧美综合互動交流_国产精品午夜男女福利_日韩欧美成人观看_欧美性爱怡红院_一区二区三区成人免费国产_国产A∨无码专区亚洲A_亚洲中文字幕视频国产_尹人久久大香找蕉综合影院_免费一级肉体黄毛片_男女同床爽爽视频软件

This test method is a measure of the solubility of asphalt in trichloroethylene. The portion that is soluble in trichloroethylene represents the active cementing constituents.

The assembly of the ?ltering apparatus is illustrated Details of the component parts are as follows:

1. Bitumen Crucible or Gooch Crucible, glazed insideand outside with the exception of outside bottom surface. Theapproximate dimensions shall be a diameter of 44 mm at thetop, tapering to 36 mm at the bottom, and a depth of 20-30 mm.

2. Glass Micro?ber Filter Pad  , 32–34 mm diameter, ?neporosity, fast ?ow rate, 1.5 μm particle retention.

3. Filter Flask , heavy-wall, with side tube, 250- or500-mL capacity

4. Filter Tube, 40- to 42-mm inside diameter.

5. Rubber Tubing or Adapter , for holding the crucible on the ?lter tube  

6. Erlenmeyer Flask , 125 mL

7. Oven , capable of maintaining a temperature of 110 ±5°C.