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.
Cationic Emulsion :
If the bitumen in the emulsion has a positive particle charge, the product produced is called cationic emulsion bitumen.
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