Fine bitumen droplets dispersed in water with an emulsifier. Charge, setting behaviour and aggregate compatibility determine the right product. Emulsion and recovered-binder tests must be considered separately. Tack coats, surface treatments and cold mixes can call for different emulsion grades even on the same project. Share the intended treatment, aggregate information and specified setting class, together with the required tests and storage arrangements.
Reference limits from the SRNT catalogue, not measured batch results or a COA. Availability, the applicable standard edition and contractual limits are confirmed for each enquiry.
Reference technical specifications · K1-70
Property / condition
Unit
Reference limit
Test method
PUBLISHED COMMERCIAL REFERENCE PARAMETERS
Residue by evaporation
%
≥67
ASTM D6934
Sieve test
%
≤0.10
ASTM D6933
Saybolt Furol viscosity at 50°C
SFS
≥20
ASTM D7496
Particle charge
-
Positive
ASTM D7402
Oil distillate, by volume of emulsion
%
≤4
ASTM D6997
Storage stability, 24 h
%
≤1
ASTM D6930
K-grade names and acceptance limits depend on the destination-market specification. The test procedure, sieve opening, recovery method and storage-test period must be agreed before acceptance. “Agreed method” identifies a procedure to be set in the purchase specification.
Grade selection also depends on the aggregate and intended treatment. Packaging, handling conditions, storage
period and final specifications are confirmed for each enquiry.
