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Uneven coating color is commonly found on the inner wall or flat top of a polyethylene alcohol coating, etc., which shows inconsistent color and poor covering power. The reason is:
1, concrete or mortar base maintenance time is short, low strength, too humid.
2, the smoothness of the grass-roots surface is not consistent, adsorption force is different
the
.
3, the grass-roots construction of the location is not uniform, there are obvious connections, the surface color is not consistent.
4, the use of not the same batch of paint, color doping volume is different.
5, paint did not stir evenly or arbitrarily add water, so that the paint color is different.
can take the following preventive measures:
1, concrete base maintenance time should be more than 28 days, mortar should be more than 7 days, mortar filling holes should be more than 3 days. The water content is controlled to less than 10%, and the matching ratio of concrete or mortar should be the same.
construction seams of 2, concrete or mortar should be left at yin and yang corners or at sub-position seams.
3, the grass-roots construction should be smooth, the smudge should be consistent, before painting the surface oil pollution and other clean up.
4, each batch of paint color materials and a variety of raw materials must be consistent with the ratio.
5, the use of paint must be stirred evenly at any time, not any water.