Cement-based permeable crystallization type waterproof coating is rigid waterproof material, it has other materials incomparable secondary permeability resistance and compatibility with structure. In the underground engineering waterproof impermeability performance is superior to common waterproof materials, it is an indisputable fact. Material notes, "three points, seven points and construction", if it does not follow the correct construction procedure, will not be able to play a good performance. So in the waterproof construction of winter, besmear brushs cement-based permeable crystallization type waterproof coating should pay attention to what?

1, base treatment

(1) using cement-based permeable crystallization type waterproof coating, the base surface should be clean without cement slurry, oil and other sundry, cleaning the concrete base, closely joint can make waterproof coating, is advantageous to the coating permeability and the formation of crystals, the secondary permeability effect into full play.

If not regular cleaning, can use wire brush to brush, high pressure water washing method for processing.

(2) must be carefully check whether there is a defect of the structure on the surface of the base of cellular, holes, cracks and surrounding the fluctuation conduit with plugging materials (such as the king of the lang cage) paste fill up and smooth, sharp edges and bump should be removed. The basal application of porous waterproof coating, coating level off. Yin and Yang Angle such as node into a circular arc Angle (Yin Angle R > 50 mm, Yang Angle R > 10 mm).

(3) before the construction must be thoroughly wet face with water, the formation of internal saturation, facilitate cement-based permeable crystallization type waterproof coating by using water to permeate internal concrete structure. But to keep the base level five MingShui, a wet a winter construction should do.

2, local besmear bottom

According to from top to bottom, from left to right to local besmear to brush. To ensure the coating thickness and construction recommended dose, or slurry is too thin or mixing unevenness, was easy to powder or shell. Can use an electric mixer, fully stirring until the formation of glutinous rice dough evenly slurry and let stand for 10 minutes to stir pulp after full cure again for a second. When secondary mixing agitator should be placed at the bottom of the container, don't lift motion, so as not to paste up into the air, after adjusted the size should be finished as soon as possible.

3, large area construction

Brush with brown or scraping board will paste evenly coated with full moisture without MingShui base surface, pay attention to avoid missing brush. When a coating curing and produce enough strength after, and then on to the next layer construction, each layer brushing direction should be perpendicular intersect.

Gap and easy deformation cracks with strong fluctuation conduit outlet suggest using glass fiber grid cloth make enhancement processing. The construction of the high pressure spraying method may be adopted.

4, when the coating curing to not be sprayed with water damage to the maintenance, the winter should be sprayed with water 1 ~ 3 times a day (not frozen), or use the moisture breathable cloth, straw mat covers two days. Maintenance for 1 ~ 2 days.