The most complaints from customers of marble products are the cracking of the product and the repair of surface cracks. Marble, as an important interior decoration material for buildings, is deeply loved by the public and occupies an important position as interior decoration materials, far exceeding the amount of granite. Although marble is so popular among the general public, marble has a headache for any stone processing enterprise, which is marble crack repair. Marble crack glue is good, which can improve the quality and grade of the stone; if the glue is not good, the general public will not like the best marble, and the price and value are greatly discounted, or even worthless. It is often seen that some large shopping malls, hotels, and hotels affect the decoration effect due to the fracture of the marble and the quality of the glue. Because of the poor quality of repairing glue for cracks on the marble surface, or the failure of Party A or the customer to refuse to accept the goods in the family residential decoration project, a large amount of stone resources are wasted. Therefore, stone processing enterprises must start with marble crack repairing for marble products. Only when marble crack repairing is done can the quality, value and price of marble products be improved, so as to create more profits for the enterprise and reduce stone resources. Waste.
1. Marble cracks and poor glue repair affect the decorative effect
 
The pictures in Figure 1 to Figure 5 were taken in several large-scale urban complex shopping malls and star hotels in Shenzhen. Their influence in Shenzhen and even in China is great. Seeing these pictures, I believe that stone people will feel red, because this situation can be described as "unsightly". In fact, this is caused by the failure of the stone cracks to repair the glue and the poor quality of the glue. If the cracks on the surface of the stone are glued well and the strength is sufficient, all these problems can be avoided.
 
The problem of replenishing glue for marble cracks has been around for a long time, but this problem has not been overcome. Marble cracks and cracks have caused the annual rejected products and the amount of waste dumped into the trash can not to be counted, and the waste is surprising. Figure 6 shows the pile of star white scraps after the completion of a real estate and residential project in Shenzhen that the author experienced. The amount is nearly 20,000 square meters. Based on the purchase price at that time, it is estimated that it is nearly 10 million yuan. If these materials are used, it is not a small profit for stone processing enterprises. The huge waste of these materials is mainly because the cracks on the surface of the stone are not accepted by customers, and the quality of the glue on the surface of the stone is poor.
2. Don't lose big because of small marble repair
 
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For a long time, domestic stone processing enterprises have not put the problem of rubber supplementation in the first place of the enterprise's production management.
 
The cracks on the surface of the slab are still obvious after repairing, not to mention that it is not obvious at a distance of 1.5 meters, but it is obvious at 3 meters or more. As for the strength of the glue, it is even more difficult to meet the requirements. The large slab has not been cut, and it will "creak" when it is hoisted with a crane, and it will break when it is transported or moved. How can a product with such a replenishing quality withstand the test of use? It is not surprising that the cracks shown in Figure 1 to Figure 5 occur.
 
Fig. 7 and Fig. 8 The cracks on the surface of the marble that have been glued are still very obvious. Figure 9 The repaired stone was damaged so badly after it arrived at the construction site.
3. Marble repair should keep improving
 
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To repair the cracked marble is not simply a matter of choosing a glue to scrape the cracks at will. The repairing process also pays attention to certain principles, technological methods, and technical measures. From the selection of glue, to the test of replenishment, to the process of replenishment, it is necessary to be serious and strive for perfection in order to achieve good replenishment quality. The reason why the marble that has been repaired still has a lot of cracks, and the cracks in the repaired place are obviously related to the production staff's failure to repair carefully and the lack of excellence in the quality of the repair. For many years, stone processing enterprises have sought more quantity and increased their sales; production staff’s piece-rate wage system requires only quantity and pays more. It is impossible to make up the glue carefully.
 
Fig. 10 The obvious black line appears at the glue repairing place, which has a great relationship with the dirt in the gaps, the presence of moisture in the gaps, and the color of the glue when the glue is repaired. If the cracks of the large board are not well repaired, after cutting into finished products, the cracks can also be repaired by digging and repairing with the same color as the board surface to improve the quality of the glue. However, most of the production staff of stone processing enterprises will not be so serious about repairing cracked stone that could have been glued, because it takes time to deal with it, which will affect their income, and the company is out of cost and production. The consideration of production volume and production delivery time will not make production employees do this kind of seemingly "not worth the loss."