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. Emulsions in which the particles are positively charged are
called cationic emulsions
emulsion is obtained by electric field. In anionic emulsion the droplets
migrate from anode. Anionic bitumen emulsion ASS-1 is a slow setting , anionic
type of bitumen. The particle size of the emulsion is 0.1 to 5 micron and the emulsifier
which is usually used for producing anionic bitumen emulsion ASS-1 is alkaline salt with Ammonium Salt which
put the bitumen and water droplet together.
applications of Anionic bitumen emulsion ASS-1 are waterproofing, building application,
construction, surfacing and maintenance.
INTERNATIONAL BITUMEN SUPPLY
guarantee to supply anionic bitumen
ASS-1 in compliance to the mentioned
specification in table.
supply is able to provide every packaging according to customers enquiry.
anionic bitumen ASS-1
viscosity at 25°C
at 25 °C