1、Standard Specification for Emulsified Asphalt AASHTO Designation: M 140-18 Technical Section: 2a, Emulsified Asphalts Release: Group 3 (August) 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 Stand
2、ard Specification for Emulsified Asphalt AASHTO Designation: M 140-18 Technical Section: 2a, Emulsified Asphalts Release: Group 3 (August 2018) 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 speci
3、fications covering cationic emulsified asphalt and M 316 for specifications covering 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 E
4、mulsified Asphalt R 5, Selection and Use of Emulsified Asphalts R 66, Sampling Asphalt 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,
5、Mineral Matter or Ash in Asphalt Materials T 382, Determining the Viscosity of Emulsified Asphalt by a Rotational Paddle Viscometer 3. REQUIREMENTS 3.1. Upon receipt, refer to T 59 for the proper protocol for conditioning the emulsified asphalt prior to mixing and testing. The emulsified asphalt sho
6、uld 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 emulsified asphalt residue properties within 30 days of the emulsified asphalt sample date. Note 2Dilution of the emulsified asphal
7、t to aid in the field application of the material should not occur without approval of the buyer. 3.1.1. If the emulsified asphalt appears to be inhomogeneous after reconditioning and mixing according to T 59, discard and resample for testing if required by the buyer. 2018 by the American Associatio
8、n of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-2a M 140-2 AASHTO Note 3When emulsified asphalts (in particular, rapid-setting grades) are held in containers at ambient temperature for an extended period, emulsified asphalt drople
9、ts can coalesce, leading to unrepresentative changes in emulsified asphalt liquid properties. Coalescence can also lead to sieve development and, ultimately, destabilization of the emulsified asphalt. This can be noted as overall inhomogeneity of the sample even after careful reheating and mixing up
10、on receipt. 3.1.2. If the sample was subjected to freezethaw cycling prior to receipt, discard and resample for testing. If the emulsified asphalt was frozen at any time before testing, results for emulsified asphalt liquid properties such as viscosity, sieve, and settlement will be invalid. Note 4E
11、mulsified asphalt residue properties can also be affected when the liquid emulsified asphalt to be recovered shows signs of inhomogeneity or has been subjected to freezethaw cycling. Note 5If the emulsified asphalt appears inhomogeneous or is suspected of having been subjected to freezethaw cycling
12、prior to testing and a second, representative sample cannot be obtained, actual emulsified asphalt performance at time of construction should be reviewed. If sample integrity issues persist, consider deploying R 77 so that liquid emulsified asphalt samples are taken directly from heated storage tank
13、s 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 and grade specified. 2018 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is
14、 a violation of applicable law.TS-2a M 140-3 AASHTO 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 Max Min Max Min Max Min Max Min Max Tests on emulsified asphalt: Viscosity, Saybolt Furol at 25C (77F), sb,c20 100 20
15、100 20 100 Or Viscosity, Rotational Paddle at 25C (77F), mPasb,c40 200 40 200 40 200 Viscosity, Saybolt Furol at 50C (122F), sb,c75 400 75 400 75 400 75 400 Or Viscosity, Rotational Paddle at 50C (122F), mPasb,c150 800 150 800 150 800 150 800 Storage stability test, 24 h, %b ,c1.0 1.0 1.0 1.0 1.0 1.
16、0 1.0 Demulsibility, 35 mL, 0.02 N CaCl2, %b60 60 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 Ductilit
17、y, 25C (77F), 5 cm/min, cm 40 40 40 40 40 40 40 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 requi
18、rement on representative samples may be waived if 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. 2018 by the American Association of State Highwa
19、y and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-2a M 140-4 AASHTO 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 emul
20、sified asphalt: Viscosity, Saybolt Furol at 25C (77F), sb,c20 100 Or Viscosity, Rotational Paddle at 25C (77F), mPasb,c40 200 Viscosity, Saybolt Furol at 50C (122F), sb,c100 100 100 100 100 Or Viscosity, Rotational Paddle at 50C (122F), mPasb,c200 200 200 200 200 Storage stability test, 24 h, %b ,c1
21、.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 from distillation: Penetration, 25C (77F), 100 g, 5 s, 0.1 mm 90 250 90 250 40 90 90 250 40 90 250 Ductility, 2
22、5C (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 emulsified asphalt: Viscosity, Saybolt Furol at 25C (77F), sb,c20 100 20 100 Or Viscosity, Rotational Paddle at 25C (77
23、F), mPasb,c40 200 40 200 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, 25C (77F), 5 cm/min, cm 40 40 Ash content
24、, % 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 application of the material has been achieved in
25、the field. d For emulsified asphalts that are diluted, the percent residue requirements must be adjusted accordingly. 2018 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-2a M 140-5 AASHTO 4. SAMPLING 4.1
26、. 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 the emulsified asphalts given in Table 1 in accordance with T 59
27、. Determine the emulsified asphalt viscosity as given in Table 1 in accordance with the Rotational Paddle method in T 382 or by the Saybolt Furol method in T 59, as appropriate. 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. 2018 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.
