AASHTO T 53-2009 Standard Method of Test for Softening Point of Bitumen (Ring-and-Ball Apparatus)《沥青软化点标准试验方法(环球法)》.pdf

1、 Standard Method of Test for Softening Point of Bitumen (Ring-and-Ball Apparatus) AASHTO Designation: T 53-09 (2013) ASTM Designation: D36-06 American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001 TS-2b T 53-1 AASHTO Standar

2、d Method of Test for Softening Point of Bitumen (Ring-and-Ball Apparatus) AASHTO Designation: T 53-09 (2013) ASTM Designation: D36-06 AASHTO T 53-09 (2013) is identical to ASTM D36-06 except for the following provisions: 1. Replace all references to the ASTM standards listed in the following table w

3、ith the corresponding AASHTO standard: Referenced Standards ASTM AASHTO D92 T 48 D140 R 66 2. Replace Section 5.2 with the following: Pouring PlateA flat, smooth brass plate. 3. Add an additional subsection to Section 5.7 that reads as follows: An ASTM Wide Range Softening Point Thermometer, having

4、a range from 1 to +175C or 30 to 350F and conforming to the requirements for Thermometer 113C or 113F as prescribed in ASTM E1. As an alternative, other thermometric devices may be used provided they: (1) have a maximum scale error no greater than that of the thermometer specified in ASTM E1, and (2

5、) are capable of indicating temperature within 0.5C (1.0F). 4. Replace the last sentence of Section 5.7.1 with the following: As an alternative, other thermometric devices may be used provided they: (1) have a maximum scale error no greater than that of the thermometer specified in ASTM E1, and (2)

6、are capable of indicating temperature within 0.2C (0.5F). 5. Replace the last sentence of Section 5.7.2 with the following: As an alternative, other thermometric devices may be used provided they: (1) have a maximum scale error no greater than that of the thermometer specified in ASTM E1, and (2) ar

7、e capable of indicating temperature within 0.5C (1.0F). 6. Delete the final two sentences of Section 5.7.3. 7. Replace Figure 1 with the figure shown on page 3. 8. Replace the first sentence of Section 6.1.3 with the following: Ethylene glycol, with a boiling point between 193 and 204C (379 and 399F

8、). 9. Replace the first sentence of Section 9.1.1 with the following: Freshly boiled distilled water for softening points between 30 and 80C (86 and 176F); use Thermometer 15C or 15F or an alternative thermometric device as specified in Section 5.7.1. 10. Replace the first sentence of Section 9.1.2

9、with the following: USP glycerin for softening points above 80C (176F) and up to 157C (315F); use Thermometer 16C or 16F or an alternative thermometric device as specified in Section 5.7.2. 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplicatio

10、n is a violation of applicable law.TS-2b T 53-2 AASHTO 11. Replace the first sentence of Section 9.1.3 with the following: Ethylene glycol for softening points between 30 and 110C (86 and 230F); use Thermometer 113C or 113F, or an alternative thermometric device as specified in Section 5.7.2. 12. Re

11、place Section 11.1 with the following: When using Thermometer 15C or 15F, or an alternative thermometric device as specified in Section 5.7.1, report the mean or corrected mean of the temperatures recorded in Section 9.6 to the nearest 0.2C (0.5F) as the softening point. 13. Replace Section 11.2 wit

12、h the following: When using Thermometer 16C, 16F, 113C, or 113F, or an alternative thermometric device as specified in Section 5.7.2, report the mean or corrected mean of the temperatures recorded in Section 9.6 to the nearest 0.5C (1.0F) as the softening point. 2015 by the American Association of S

13、tate Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2b T 53-3 AASHTO Notes: 1. This diameter is to be slightly larger approximately 0.05 mm (0.002 in.) than dimension C of Figure 1(a) to permit insertion of the ring. In the final assembly, t

14、he thermometer bulb shall be within 12.7 mm (0.50 in.) of, but not touching, the ball centering guide. 2. The shape of the ring holder in Figure 1(b) is not critical with respect to the test results; therefore, any shape is acceptable provided it is suitable to support the test apparatus. 3. This di

15、ameter is to be slightly larger approximately 0.05 mm (0.002 in.) than dimension A of Figure 1(a) to slide over the ring. 4. This diameter is to be slightly larger approximately 0.05 mm (0.002 in.) than 9.7 mm (0.38 in.) to allow placing and centering of the steel ball. Figure 1Shouldered Ring, Ring Holder, Ball-Centering Guide, and Assembly of Apparatus Showing Two Rings 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.