The bubble is a bubble on the basis of concrete, so the quality of the foam bubbles will directly affect the quality of concrete.

1. The stability of the bubble: a good quality of the cement foam preparation of the foam, its tough film, mechanical strength, and not readily available in paste or burst under the pressure of excessive deformation. In addition, it has a self-water, liquid water is not easy on the gravity and surface tension under the loss of foam could be a long time to maintain the integrity and the thickness of the film, so that no inter-long bubble burst. Good stability of the bubble, in the plasma membrane rupture in the body is not easy, not easy to form a hole connected.

2. Uniformity of the bubble: the preparation of the foam bubbles can not be exactly the same track, but it should be similar to the basic, bubble diameter should be as small as possible, preferably between 0.1 ~ 1mm.

3. Bleeding: self-made out of foam, gradually bleeding out. The bubble low rate of bleeding in order to better ensure that the bubble in the number of bubbles and foam concrete porosity, to ensure that the density of foam concrete.

4. Cementitious material on the negative role: cementing material is a bubble of the main sources of strength of concrete, some of the foam preparation of foam stability is very good, but joined the cementing material, will lower the intensity of foam concrete, and even loss of strength So choose to take the bubble-gel does not have a negative effect of the foam.