1、 TS-2a M 316-1 AASHTO Standard Specification for Polymer-Modified Cationic Emulsified Asphalt AASHTO Designation: M 316-13 1. SCOPE 1.1. This specification covers grades of polymer-modified cationic emulsified asphalt for use in pavement construction. The modifier may be either a solid or a latex po
2、lymer. The modifier may be added either to the asphalt binder or during the emulsification process. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: T 40, Sampling Bituminous Materials T 44, Solubility of Bituminous Materials T 49, Penetration of Bituminous Materials T 51, Ductility of Asphalt Materia
3、ls T 59, Emulsified Asphalts T 300, Force Ductility Test of Asphalt Materials T 301, Elastic Recovery Test of Asphalt Materials by Means of a Ductilometer T 302, Polymer Content of Polymer-Modified Emulsified Asphalt Residue and Asphalt Binders 3. DEFINITIONS 3.1. CRS-2Pa cationic emulsified asphalt
4、 made with base asphalt binder typically modified with styrene-butadiene or styrene-butadiene styrene block copolymers. 3.2. CRS-2La cationic emulsified asphalt made with base asphalt binder typically modified with styrene-butadiene rubber latex or polychloroprene latex. 4. REQUIREMENTS 4.1. Upon re
5、ceipt, inspect the emulsion to ensure that it has not been subjected to freezethaw conditions. The emulsion should appear to be homogeneous after thorough mixing. Complete testing within 30 days of the sample date. 4.2. The emulsified asphalt shall conform to the requirements in Table 1. 2013 by the
6、 American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2a M 316-2 AASHTO Table 1Requirements for Polymer-Modified Cationic Emulsified Asphalt Type, Grade Rapid-Setting CRS-2P CRS-2L Min Max Min Max Test on emulsions: V
7、iscosity, Saybolt Furol at 50C (122F) s 100 400 100 400 Storage stability test, 24-h % 1 1 Demulsibility, 35 mL of 0.8 % dioctyl sodium sulfosuccinate % 40 40 Particle charge test Positive Positive Sieve test % 0.10 0.10 Evaporation residue % 65 65 Test on residue from evaporation test: Penetration,
8、 25C (77F), 100 g, 5 s 0.1 mm 100 175 100 175 Ductility, 4C (39F), 5 cm/min cm 30 30 Ductility, 25C (77F), 5 cm/min cm 125 125 Force ratio (f2/f1) 0.3 NA Elastic recovery 25C (77F) % 50 NA Polymer solids content % 2.5 2.5 Solubility in trichloroethylene % 97.5a97.5aa If the solubility of the residue
9、 is less than 97.5 percent, the base asphalt binder for the emulsion shall be tested. The solubility of the base asphalt binder shall be greater than 99 percent. 5. SAMPLING 5.1. Take samples of emulsified asphalt in accordance with T 40. 5.2. Store samples in a clean, airtight, plastic container at
10、 a temperature of not less than 4.5C (40F) until tested. 6. METHOD OF TEST 6.1. Determine the properties of the emulsified asphalt given in Table 1 in accordance with T 59. Perform tests on the residue in accordance with AASHTO T 44, T 49, T 51, T 300, T 301, or T 302 as appropriate. 6.1.1. Sieve TestUse distilled water in all wetting and washing operations rather than a 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.
