Wet Shop granite water spots

The traditional wet granite installation process is simple, convenient operation, low cost, the current installation of the granite is still widely used. Thus, after the installation brings the number of granite-prone lesions after-effects, most notably the long-term granite does not dry or dry water spots, water marks left by the phenomenon. Especially in light-colored granite, a variety of different shapes, different sizes, with the wet, there are dry, dark, light water spots are stubbornly entrenched in the building surface, very ugly. This phenomenon is known as water spots (stains) quit. This problem has plagued many owners of units still under construction units and granite suppliers, and granite production plant, and many other relevant units and departments.

In this paper, we have encountered at work in the water spots (stains), as well as treatment methods, an analysis for your reference.

One, resulting in water spots (stains) quit reasons

1, different varieties of granite; place water spots (stains) none of the granite of a light-colored granite with white majority, the majority of granite materials. Gray granite to wood as an example; which is characterized by acidic magmatic rocks, a higher degree of crystallinity, crystal micro-cracks between the rich, high water absorption, a variety of metal mineral content is relatively high. Based on these characteristics, be installed in the shop when the wet cement of the alkaline substance is the amount of water into the granite is relatively large, easy to metal and granite in the mineral chemical reaction to produce alumina type, salt The so-called water crystals, there is cleavage in the rock fissures between and among the crystal, under normal circumstances is difficult to evaporate and dry the granite show the long-term flooding in the state image.

2, the protective agent to use or improper use of species selection. Protective agent market are many kinds of granite should be different in different application areas, different paving methods, to use different protective agent, which is often overlooked. More importantly, the amount of construction methods and the use of reasonable choices, often found within the same building facade area or ground, using the same granite (the base to be with a big board), the same cement, sand, construction condition, in the even appear on the same piece of granite of different water spots (stains) quit appearance, that some granite dry, some wet. This basically is the use of granite protector but no serious result of the operation according to requirements in the protective agent usage, and brushing are very different evenness. Requirements by using the ratio is adequate, and even brushing the granite, and soon dry. On the contrary, the water is prone to spots (stains) quit phenomenon.

3, when the granite pavement of cement, sand, choice and control of water and granite yellow spots on the water also have great impact. We have encountered the use of white cement, white sand child, light-colored paving granites, the result is water spots, large yellow granite appear only after repeated treatment of basic rehabilitation. In the construction of the cement alkali content, manganese, iron, sand, soil containing amount (impurity mass), the amount of water are to be strictly controlled. Otherwise bound to make the granite are subject to different procedures of dipping diffuse pollution.

Second, there water spots (stains) none of the treatment method

First, to distinguish what is causing the water spots (stains) quit. If the Ishimura below, there are a lot of water (such as: pavement is completed, with the cutting machine cut the ground water; in the pavement before the ground full of water; installed between the infiltrated by a patchwork of large amounts of water, etc.), so this should be honeycomb-like dry cement overlay was water saturated, the ground should be used for this method of drying, or a long-time natural drying, the overlay of cement in the evaporated water, and then control the granite itself . If the indiscriminate use of chemical cleaning at this time, tend to increase the Baptist diffuse phenomenon. The reason is simple to clean water, but water never wash off water, but evaporation is reasonable. Heating method was used, if using hot air drying method is possible, but not a lot of large-scale applications; the use of fire, light roast and other methods, the effect is not ideal, these methods are able to rapidly improve granite surface temperature increase can not be long cement overlay temperature, evaporation of water will not be too obvious, while the negative effects are great. Peng rapid heating causes the expansion of granite, and concrete overlay layer caused by hollowing phenomenon, caused sometimes bent Alice granite, have notches, the result difficult to artificially control, it is recommended not used.

According to our management experience, the light-colored granite materials related pollution in the clear understanding (through surveys and detailed analysis is to understand clearly) cement overlay is not really the case of water saturation can be the appropriate choice of granite cleaning agent at l: 1 ratio of detergent is blended with deep marble CHJ, then l: 1 is blended with water, washing machine full use of heavy cleaning, decomposition of the chemical solution into the granite and the cleavage fracture between the crystal water crystal and metal salts crystallization In half an hour to 2 hours to wash away with water. This method should pay attention to two points, first place can not leak into the granite patchwork of chemical medicine too much (if the amount is small you can not care about), so as to avoid erosion damage of cement layer; second, clean water, you must promptly suck can not leak into the patchwork of granite, the increase in water content of cement overlay. Principle of this method is very simple: to destroy the granite cracks and cleavage between the crystal water crystal, metal salts, while the role of micro-explosion produces the airway open the granite to speed up the evaporation of water, granite water was distilled off and dry, and not be washed dry. This method is generally within a few hours because there are more surfaces :3-7 days, obviously. If there are results, and not any can be completely eliminated, further analysis is necessary for two reasons: First, water containing cement overlay is too high? The second is whether the use of chemical medicine is not enough to do the second time.

    Third, the prevention of granite water spots (stains) contamination of the proposed

1, protective agent selected carefully, we suggest using the silicon-oxygen water repellant CHJ CHJ granite bottom protector plus, if the conditions can be used to handle these two protectants granite bottom and sides, keep a positive not do it, etc. After the granite is completely dry and clean on the front do CHJ8765 composite antifouling agent treatment. Meanwhile, we should adhere to one principle: to be done carefully by granite protection to methods of operation, use good, or better to do.

2, the choice of a good cement, sand, try to choose a large cement manufacturer brand names (often small cement production per unit of product is not subject to the control of a variety of impurities); try to choose Portland cement, such as non-use sulphoaluminate (white cement ) can not, premium white cement should be used, because only this level of white cement in the manganese and iron content is controlled. Sand, washed sand as we choose, and some miscellaneous straight sand unimaginable high quality, which has been flooding out of the pigment and impurities, and granite will be brought into the pollution of granite.

3, the strict control of water wet the granite is actually a semi-dry pavement paving, pavement work and some time in the last shower mortar, do not control, so this should become a semi-wet sand and cement mortar Prize, but some pavement is to end direct water spray, the more feasible, the excess water, the granite itself the possibility of contamination. Proposed slurry method, including the underside of the granite, which include the board, including with the dentate pulp slurry to maintain the scraping of quantitative (in favor of smoothness), but also reduce water, reduce pollution, because the granite has been to improve the quality of the decoration.