Similar International Standards
ASTM D2397/D2397M-21ASTM International, USA
HighCurrent
Standard Specification for Cationic Emulsified Asphalt
Specifies grades, properties, and test methods for cationic emulsified asphalts for road paving.
EN 13808:2013CEN (European Committee for Standardization), Europe
HighCurrent
Bitumen and bituminous binders - Framework for specifying cationic bituminous emulsions
Provides a framework of property classes to specify cationic bituminous emulsions for various applications.
AASHTO M 208-16 (2020)AASHTO (American Association of State Highway and Transportation Officials), USA
HighCurrent
Standard Specification for Cationic Emulsified Asphalt
Covers cationic emulsified asphalts for pavement construction and maintenance, closely aligned with ASTM D2397.
BS 434-1:2011BSI (British Standards Institution), UK
MediumWithdrawn
Bitumen and bituminous binders. Cationic bituminous emulsions. Requirements
Previously specified requirements for cationic emulsions in the UK before harmonization with European standards.
Key Differences
≠The grade classification in EN 13808 is a complex alphanumeric system based on binder content, hardness, and setting characteristics (e.g., C60B3), whereas IS 8887 uses a simpler nomenclature based on setting rate (RS, MS, SS).
≠IS 8887 specifies a maximum separation of 2% for the 24-hour storage stability test, while ASTM D2397 is stricter, requiring a maximum of 1% separation for comparable grades.
≠EN 13808 acts as a 'framework specification', providing classes for properties from which users select to create a specification. IS 8887, like ASTM D2397, provides pre-defined grades with fixed property limits.
≠The specified penetration range for the residual binder can differ significantly. For a rapid-setting emulsion (IS: RS-1), the penetration is 80-150 dmm, whereas for the equivalent ASTM grade (CRS-1), it is 100-250 dmm, indicating a softer base binder is permitted by ASTM.
Key Similarities
≈The fundamental principle across all standards is the specification of cationic (positively charged) emulsions, which is verified by a mandatory 'Particle Charge' test.
≈IS 8887 and ASTM D2397/AASHTO M 208 share a common classification system based on the rate of setting: Rapid-Setting (RS/CRS), Medium-Setting (MS/CMS), and Slow-Setting (SS/CSS).
≈Core quality tests such as Viscosity (typically Saybolt Furol), Sieve Test (for coarse particles), and Binder Content (Residue by distillation/evaporation) are common requirements in all standards.
≈All standards mandate testing the properties of the residual binder obtained from the emulsion, including parameters like Penetration, Ductility, and Solubility, to ensure the quality of the base bitumen.