History Of Emulsion Bitumen :
The first emulsion bitumen was patented in 1922 by Hugh Allen McKee. Emulsion bitumen production in France, known as the birthplace of this technology, increased from 10,000 tons in 1923 to 300,000 tons during World War II and reached 1,200,000 tons in 1970. They are being built all over the world.
Classification Of Bituminous Emulsions In Terms Of Breaking Rate :
Bitumen emulsion comes from a combination of bitumen, water, emulsifier and additive amount, which after combining the product has a particle charge, which is divided into two types of cationic emulsion and anionic emulsion based on the product particle load. After using the bitumen emulsion, the water in the mixture is separated and evaporated, and the bitumen gradually coats the road surface or around the aggregates, a process called emulsion failure. Bitumen emulsions are divided into three main groups based on their stability against breaking: fast breaking, slow breaking and slow breaking.
Anionic emulsion :
If the bitumen in the emulsion has a negative particle charge, the product produced is called anionic emulsion bitumen.
Spaces Product :
Sharpening bitumen emulsions :
Unstable bitumen emulsions wash off very quickly on the surface of the material, leaving a very thin layer of bitumen.
Types of Sharpening Bitumen Emulsions :
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Slow-Breaking Bitumen Emulsions :
This category includes bitumen emulsions that are more stable than brittle emulsions and can be used with Mixed stone materials. Because they do not break immediately after contact with aggregates and asphalt mix for several Minutes maintain their efficiency.
Refractory Bitumen Emulsions :
This category includes bitumen emulsions that have a high stability after contact with stone materials. These emulsions can be Used with stone materials with continuous granulation and large amounts of fine grains. Refractory bitumen emulsions have little corrosion Which can be further reduced by adding water.