ASTM D6136/D6136M-15 (R2021) pdf free download.Standard Test Method for Kerosine Number of Unsaturated (Dry) Felt by Vacuum Method.
1.1 This test method covers the determination of the relative saturating capacity of unsaturated (dry) felt papers used in roofing.
1.2 The values stated in either SI units or inch-pound units are to he regarded separately as standard. The values stated in each system are not necessarily exact equivalents: therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
3. Summary of Test Niethod
3.1 The kerosine number of unsaturated (dry) felt is computed from the weight of a kerosine of known specific gravity retained by the felt after displacement of the air from interior voids. It is the millilitres of kerosine held /100 g of felt, and thus, is a measure of the quantity of saturant that a given felt will absorb.
4. Significance and Use
4.1 The ability to absorb kerosine is an indication of the ability to absorb hot asphalt. The kerosine number is used in calculating saturation efficiency.
5. Apparatus
5.1 Glass Vessel, approximately 1500 mL capacity, for soaking specimens of felt in kerosine, under vacuum.
5.2 Vacuum Pump, capable of reaching and maintaining a vacuum of at least 700 mm Hg in the glass vessel.
5.3 Lightweight Glass or Metal Weighing (‘ontainer with tightly fitting cover, 60 by 140 mm 12.5 by 5.5 in.] or larger, to contain felt strips in a horizontal position without bending or distortion.
5.4 Drying Oi’en, with dimensions at least 300 by 300 by 300 mm 112 by 12 by 12 in.1.
5.5 Other Apparatus—Desiccator, wire hook, and if necessary, a punch to make a small hole in a corner of the specimens after they are cut.
6. Materials
6.1 Water-White Kerosine, complying to the requirements of Specification D3699 and having a specific gravity of 0.800 ±
0.025 at 25 °C, as determined in accordance with Test Method D1298.
7. Sampling
7.1 Obtain a sample of the felt in accordance with Practice D585.ASTM D6136/D6136M pdf download.