One of the method
for modifying bitumen is emulsification with water which enhance bitumen
properties incredibly. Another advantages of modification is that it can be
applied cold (80°C). Emulsion bituminous asphalt consist of two immiscible
liquids which are stabilized by emulsifier. They usually used for tack coats,
hot-mixed asphalt, prime coats, chip seal. Firstly Anionic emulsion were
developed and because cationic emulsion has more adhesion properties they are
more favored especially in tack coating. The type (chemistry) of the
emulsifying agent used, determines the designation. During application, the
water in a bitumen emulsion is either lost by evaporation, or it may separate
from the bitumen because of the chemical nature of the surface to which the
emulsion is applied. This process is referred to as breaking.
Depending on the
type of emulsifier the bitumen particles can be both positive and negative.
Emulsions in which the bitumen droplets are negatively charged are called
anionic emulsions. While, Emulsions in
which the particles are positively charged are called cationic emulsions.
emulsion CMS-2h is a medium setting
cationic asphalt, which has positive charge
leading reaction between the
emulsion and pavement. The primer bitumen which is used for emulsification is
obtained from crude oil. Cationic medium setting bituminous asphalt have many
advantages including: no additional heat, little or no hydrocarbon and
Can use cold materials at remote sites.
The main applications asphalt emulsion CMS-2h
are crack filling, fog seal and in-place
INTERNATIONAL BITUMEN SUPPLY
guarantee to supply cationic bitumen
CMS-2h in compliance to the mentioned
specification in table.
supply is able to provide every packaging according to customers enquiry.
anionic bitumen CMS-2h
Residue Penetration at 25 °C
Ductility at 25 °C