1、Standard Specification for Emulsified Asphalt AASHTO Designation: M 140-16 Release: Group 3 (August 2016) American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001TS-2a M 140-1 AASHTO Standard Specification for Emulsified Aspha
2、lt AASHTO Designation: M 140-16 Release: Group 3 (August 2016)1. SCOPE 1.1. This specification covers 15 grades of emulsified asphalt for use in pavement construction in the manner designated. Note 1See M 208 for specifications covering cationic emulsified asph alt and M 316 for specifications cover
3、ing polymer-modified emulsified asphalt. 1.2. The values stated in SI units are to be regarded as the standard. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: M 208, Cationic Emulsified Asphalt M 316, Polymer-Modified Emulsified Asphalt R 5, Selection and Use of Emulsified Asphalts R 66, Sampling As
4、phalt Materials R 77, Certifying Suppliers of Emulsified Asphalt T 49, Penetration of Bituminous Materials T 50, Float Test for Bituminous Materials T 51, Ductility of Asphalt Materials T 59, Emulsified Asphalts T 111, Mineral Matter or Ash in Asphalt Materials 3. REQUIREMENTS 3.1. Upon receipt, ref
5、er to T 59 for the proper protocol for conditioning the emulsified asphalt prior to mixing and testing. The emulsified asphalt should appear to be homogeneous after thorough mixing. Complete testing of sample for emulsified asphalt properties within 14 days of the sample date. Complete testing for e
6、mulsified asphalt residue properties within 30 days of the emulsified asphalt sample date. Note 2Dilution of the emulsified asphalt to aid in the field applica tion of the material should not occur without approval of the buyer. 3.1.1. If the emulsified asphalt appears to be inhomogeneous after reco
7、nditioning and mixing according to T 59, discard and resample for testing if required by the buyer. Note 3When emulsified asphalts (in particular, rapid-setting grades) are held in containers at ambient temperature for an extended period, emulsified asphalt droplets can coalesce, leading to unrepres
8、entative changes in emulsified asphalt liquid properties. Coalescence can also lead to 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-2a M 140-2 AASHTO sieve development and, ultimately, destabiliza
9、tion of the emulsified asphalt. This can be noted as overall inhomogeneity of the sample even after careful reheating and mixing upon receipt. 3.1.2. If the sample was subjected to freeze-thaw cycling prior to receipt, discard and resample for testing. If the emulsified asphalt was frozen at any tim
10、e before testing, results for emulsified asphalt liquid properties such as viscosity, sieve, and settlement will be invalid. Note 4Emulsified asphalt residue prop erties can also be affected when the liquid emulsified asphalt to be recovered shows signs of inhomogeneity or has been subjected to free
11、ze-thaw cycling. Note 5If the emulsified asphalt appears inhomogeneous or is suspecte d of having been subjected to freeze-thaw cycling prior to testing and a second, representative sample cannot be obtained, actual emulsified asphalt performance at time of construction should be reviewed. If sample
12、 integrity issues persist, consider deploying R 77 so that liquid emulsified asphalts samples are taken directly from heated storage tanks and are evaluated soon after cooling directly to the required test temperature. 3.2. Emulsified asphalt shall conform to the requirements in Table 1 for the type
13、 and grade specified. 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.Table 1Requirements for Emulsified Asphalta Type Rapid-Setting Grade RS-1h RS-1 RS-1s RS-2h RS-2 RS-2s HFRS-2 Min Max Min Max Min Ma
14、x Min Max Min Max Min Max Min Max Tests on emulsified asphalt: Viscosity, Saybolt Furol at 25C (77F), sb20 100 20 100 20 100 Viscosity, Saybolt Furol at 50C (122F), sb75 400 75 400 75 400 75 400 Storage stability test, 24 h, %b ,c1.0 1.0 1.0 1.0 1.0 1.0 1.0 Demulsibility, 35 mL, 0.02 N CaCl2, %b60 6
15、0 60 60 60 60 50 Sieve test, %b, c0.10 0.10 0.10 0.10 0.10 0.10 0.10 Distillation: Residue, %d55 55 55 65 65 65 65 Tests on residue from distillation: Penetration, 25C (77F), 100 g, 5 s, 0.1 mm 40 90 90 150 150 250 40 90 90 150 150 250 100 250 Ductility, 25C (77F), 5 cm/min, cm 40 40 40 40 40 40 40
16、Ash content, % 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Float test, 60C (140F), s 1200 aRefer to R 5 for typical applications. bThis test requirement and associated specification limits are waived for emulsified asphalt products following dilution. cThis test requirement on representative samples may be waived i
17、f successful application of the material has been achieved in the field. d For emulsified asphalts that are diluted, the percent residue requirements must be adjusted accordingly. Continued on next page. TS-2aM 140-3AASHTO 2016 by the American Association of State Highway and Transportation Official
18、s. All rights reserved. Duplication is a violation of applicable law.Table 1Requirements for Emulsified Asphalta(Continued) Type Medium-Setting Grade MS-1 MS-2 MS-2h HFMS-2 HFMS-2h HFMS-2s Min Max Min Max Min Max Min Max Min Max Min Max Tests on emulsified asphalt: Viscosity, Saybolt Furol at 25C (7
19、7F), sb20 100 Viscosity, Saybolt Furol at 50C (122F), sb100 100 100 100 100 Storage stability test, 24 h, %b ,c1.0 1.0 1.0 1.0 1.0 1.0 Sieve test, %b, c0.10 0.10 0.10 0.10 0.10 0.10 Distillation: Oil distillate, by volume of emulsified asphalt, % 1.0 7.0 Residue, %d55 65 65 65 65 65 Tests on residue
20、 from distillation: Penetration, 25C (77F), 100 g, 5 s, 0.1 mm 90 250 90 250 40 90 90 250 40 90 250 Ductility, 25C (77F), 5 cm/min, cm 40 40 40 40 40 40 Ash content, % 1.0 1.0 1.0 1.0 1.0 1.0 Float test, 60C (140F), s 1200 1200 1200 Type Slow-Setting Grade SS-1h SS-1 Min Max Min Max Tests on emulsif
21、ied asphalt: Viscosity, Saybolt Furol at 25C (77F), sb20 100 20 100 Storage stability test, 24 h, %b ,c1.0 1.0 Sieve test, %b, c0.10 0.10 Cement mixing test, % 2.0 2.0 Distillation: Residue, %d57 57 Tests on residue from distillation: Penetration, 25C (77F), 100 g, 5 s, 0.1 mm 40 90 90 250 Ductility
22、, 25C (77F), 5 cm/min, cm 40 40 Ash content, % 1.0 1.0 aRefer to R 5 for typical applications. bThis test requirement and associated specification limits are waived for emulsified asphalt products following dilution. cThis test requirement on representative samples may be waived if successful applic
23、ation of the material has been achieved in the field. d For emulsified asphalts that are diluted, the percent residue requirements must be adjusted accordingly. TS-2aM 140-4AASHTO 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a vi
24、olation of applicable law.TS-2a M 140-5 AASHTO 4. SAMPLING 4.1. Take samples of emulsified asphalt in accordance with R 66. 4.2. Store samples in clean, airtight, sealed plastic containers at a temperature of not less than 4C (39F) until tested. 5. METHODS OF TEST 5.1. Determine the properties of th
25、e emulsified asphalts given in Table 1 in accordance with T 59. Determine the properties of the emulsified asphalt residue in accordance with T 49, T 50, T 51, or T 111 as appropriate. 6. KEYWORDS 6.1. Emulsified asphalt; medium-setting; rapid-setting; slow-setting. 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.
