1、 TS-2a M 208-1 AASHTO Standard Specification for Cationic Emulsified Asphalt AASHTO Designation: M 208-01 (2009) ASTM Designation: D 2397-02 1. SCOPE 1.1. This specification covers seven grades of cationic emulsified asphalt for use in pavement construction in the manner designated. Note 1See M 140
2、for emulsions other than cationic. 1.2. The values stated in SI units are to be regarded as the standard. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: M 140, Emulsified Asphalt R 5, Selection and Use of Emulsified Asphalts T 40, Sampling Bituminous Materials T 59, Emulsified Asphalts 3. REQUIREMEN
3、TS 3.1. Within 14 days after delivery, and provided separation has not been caused by freezing, the emulsified asphalt shall be homogeneous after thorough mixing. 3.2. Emulsified asphalt shall conform to the requirements in Table 1. 2013 by the American Association of State Highway and Transportatio
4、n Officials.All rights reserved. Duplication is a violation of applicable law.Table 1Requirements and Typical Applications for Cationic Emulsified Asphalta Type Rapid-Setting Medium-Setting Slow-Setting Quick-Setting Grade CRS -1 CRS-2 CMS-2 CMS-2 h CSS-1 CSS-1 h CQS-1 h Min Max Min Max Min Max Min
5、Max Min Max Min Max Min Max Test on emulsions: Viscosity, Saybolt Furol at 25C (77F), s 20 100 20 100 20 100 Viscosity, Saybolt Furol at 50C (122F), s 20 100 100 400 50 450 50 450 Storage stability test, 24 h, percentb1 1 1 1 1 1 Demulsibility, 35 mL, 0.8 percent Sodium dioctyl sulfosucinate, percen
6、t 40 40 Coating, ability and water resistance: Coating, dry aggregate Good Good Coating, after spraying Fair Fair Coating, wet aggregate Fair Fair Coating, after spraying Fair Fair Particle charge test Positive Positive Positive Positive Positive Positive Positive Sieve test, percentb0.10 0.10 0.10
7、0.10 0.10 0.10 0.10 Cement mixing test, percent 2.0 2.0 Distillation: Oil distillate, by volume of emulsion, percent 3 3 12 12 Residue, percent 60 65 65 65 57 57 57 Tests on residue from distillation test: Penetration, 25C (77F), 100 g, 5 s 100 250 100 250 100 250 40 90 100 250 40 90 40 90 Ductility
8、, 25C (77F), 5 cm/min, cm 40 40 40 40 40 40 40 Solubility in trichloroethylene, percent 97.5 97.5 97.5 97.5 97.5 97.5 97.5 aRefer to R 5 for typical applications. bThis test requirement on representative samples may be waived if successful application of the material has been achieved in the field.
9、TS-2aM 208-2AASHTO 2013 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2a M 208-3 AASHTO 4. SAMPLING 4.1. Samples of emulsified asphalt shall be taken in accordance with T 40. 4.2. Samples shall be stored
10、 in clean, airtight sealed containers at a temperature of not less than 4C (39F) until tested. 5. METHODS OF TEST 5.1. The properties of the emulsified asphalts given in Table 1 shall be determined in accordance with T 59, with the following exception: 5.1.1. Sieve TestUse distilled water in all wetting and washing operations in place of sodium oleate solution (2 percent). 2013 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.
