How to deal with and prevent the black seam problem of ground stone?

In many places where marble is used, we often see black lines in the joints between marble and marble. How did this problem arise? How will we prevent and deal with it later? In this article, we will take the elegant white marble as an example to share this knowledge with you.

For ground stone and marble (Yashi white), when the stone is ground as a whole, the joint shall be opened and patched first, and then the stone surface shall be dry ground. After the surface loses luster, the protective agent is applied. After three days of protection and curing, the subsequent sequence of grinding and polishing is carried out. After the completion of the whole construction process, the surface brightness and permeability of the stone are very good, but there is a finger-wide area with a darker color at the edge of the stone gap, which affects the visual sense of stone care.

It is now summer. The marble glue is thin and the glue oil is easy to penetrate the stone edge. Through analysis and judgment, the edge color of the stone becomes darker, mainly due to the pollution of joint sealant.

How to avoid this phenomenon in construction?

First of all, construction shall be carried out according to specifications. The stone must be protected before the joint is opened and patched to ensure that the gap can absorb enough protective agents and do a good job of protective foundation treatment for possible pollution. Stone with large water absorption and a light color like Yashi white shall be treated again with a brush dipped with an oily protective agent after being coated with a protective agent as a whole to further enhance the protective effect.

Secondly, it is necessary to increase the dosage of the marble sealant curing agent. In summer, marble glue becomes thinner, and the curing time after joint filling becomes longer, which increases the possibility of stone edge pollution. In this case, it is necessary to increase the dosage of the marble sealant curing agent, shorten the curing time of the marble sealant curing agent, and eliminate the possibility of glue oil pollution.

If the stone has been polluted by glue oil, how to remove it?

After encountering the above problems, you must not be in a hurry. In case of an emergency, they throw themselves into the hospital at random and use nonprofessional agents such as oil chemicals and stain removers in the cleaning industry for treatment. In this way, not only the treatment effect is not ideal, but also other pollution problems will be caused.

The pollution of glue oil is mainly the pollution of glue and oil color. After we understand this truth, we can start to deal with it. First, paint the contaminated surface with a grease remover. After repeating 1-2 times, if there is still a small amount of impression, then use a decolorizing agent to decolorize. The phenomenon that the color of the gap edge becomes darker can be basically cleaned.

From the perspective of the treatment process, it is not complicated to remove the pollution of glue and oil color. In this regard, I made a friendly note: stone care colleagues should not think that the process of dealing with glue oil pollution is not complicated, so they should not pay attention to the standard of operation, otherwise, our professional image will be affected.

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