Mixing stability with cement of bitumen emulsions

3 Mixing stability with cement of bitumen emulsions 

The test determines the mixing stability of bitumen emulsions with cement. It applies to overstabilised cationic bitumen emulsions and to slow-setting and overstabilised anionic bitumen emulsions. 

Mixing stability with cement is the mass of coagulated material (bitumen and cement), which is produced when a bituminous emulsion is mixed with cement under the conditions of the test. 

According to CEN EN 12848 (2009), a mass of 50 g of cement, without lumps (passed through a 0.16 mm sieve), is added to 100 ml of bitumen emulsion and the mixture is mixed for 1 min. Immediately after that, another 150 ml of water is added and the stirring continues for another 3 min. 

The mixture is then poured to a 2 mm sieve and is washed off until the washings are clear. Then, the sieve is placed on a pan and is left for approximately 1 h in an oven at 110 C 5 C to dry. 

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