BS 2000-47:1983 pdf download.Petroleum and its products Part 47. Solubility of bituminous binders.
1. SCOPE
1.1. This method is applicable to bituminous binders containing not less than 95%0 of bitumen in which volatile constituents will not normally be present. If water is present the amount is usually small, and should be removed as directed in the method. For the determination of the bitumen content of mixtures use IP 162.
2. SUMMARY OF METHOD
2.1. The sample is dissolved in Trichloroethylene and filtered through a layer of powdered glass in a sintered crucible. The insoluble material is washed, dried and weighed. NOTE 1: The method can be used with other solvents, but bituminous binders have varying solubilities in different solvents.
3. DEFINITION
3.1. Solubility of bituminous binder is the percentage of material which is soluble in Trichloroethylene. solvent. NOTE 2: The international definition of bitumen is based on the use of Carbon Disulphide as
4. APPARATUS AND MATERIALS
4.1. Filtration apparatus including: 4.1.1. Filter flask - heavy wall, with side arm, 500 ml capacity. 4.1.2. Sintered glass crucible - No. 4 porosity, effective diameter approximately 30 mm. 4.1.3. Rubber adaptor - for holding crucible in the neck of the filter flask. 4.1.4. Powdered glass - Pyrex, particle diameter less than 74 μm.
5. SOLVENTS
5.1. Trichloroethylene, type 1 or 2, conforming to BS 580.
6. SAFETY PRECAUTIONS CAUTION: Trichloroethylene is toxic and adequate ventilation should be provided. Trichloroethylene is non-flammable, but in the presence of a fame or red hot heating wire, the vapour is changed to highly toxic phosgene gas. For these reasons, smoking and the presence of fames etc. should be prohibited.
7. SAMPLE
7.1. If the sample contains water, heat a representative portion of between 100 to 200 grams at a temperature not exceeding 130°C with constant stirring until the binder ceases to foam.
8. PREPARATION OF APPARATUS
8.1. Weigh 3士0.1 g of dried powdered glass into the sintered glass crucible.
8.2. Assemble the filtering apparatus, gently tapping the crucible in order to ensure that the glass powder is evenly distributed.
8.3. Apply gentle suction and wash the glass powder with successive portions of trichloroethylene.
8.4. Dry the crucible in an oven at 100°C under slight vacuum for I hour. Dry to constant weight.
10. CALCULATION AND REPORTING
10.1. Calculate the solubility of the sample from the formula:
Solubility, %o mass = 100 (W,- W2)/W;
Where W is the mass of the dry sample in g, W zis the mass of insoluble material in g retained in the Gooch crucible.
10.2. Report the result to the nearest 0.05% mass as the Solubility IP 47. NOTE 3: If other solvents are used, this shall be reported.
BS 2000-47 pdf download.