Emulsified asphalt contains many tiny bubbles; seeking technical assistance
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Emulsified asphalt is produced using an indoor colloid mill; upon production, a close inspection of its surface reveals many tiny bubbles. What causes so many bubbles to appear on the surface after it has been left for some time?
Is there stirring? Are the vortices generated by the stirrer visible on the surface of the asphalt? If so, it means that gas has been mixed into the asphalt during the stirring process. The solution is to reduce the stirring speed or increase the liquid level during stirring
The indoor colloid mill I use has a funnel on it for adding soap solution and asphalt; stirring is done manually with a glass rod, and no stirrer has been used
Stir manually, and the air will mix with the asphalt due to the action of the stirring rod; you might as well try a magnetic stirrer