How to deal with water spots Stone

(A) cause water spots (stains) quit reasons
1, different varieties of stone; place water spots (stains) none of the stone of a light-colored stone 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 stone within the relatively large and easy to metal and stone 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 stone 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 stone 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 stone (the base to be with a big board), the same cement, sand, construction condition, in the even appear on the same piece of stone of different water spots (stains) quit appearance, that some stone dry, some wet. This basically is the use of stone 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 stone, and soon dry. On the contrary, the water is prone to spots (stains) quit phenomenon.
3, when the stone pavement of cement, sand, choice and control of water and stone yellow spots on the water also have great impact. We have encountered the use of white cement, white sand child, light-colored paving stones, the result is water spots, large yellow stone 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 stone are subject to different procedures of dipping diffuse pollution.
(B) the prevention of stone water spots (stains) contamination of the proposed
1, protective agent selected carefully, we suggest using the silicon-oxygen water repellant CHJ CHJ stone bottom protector plus, if the conditions can be used to handle these two protectants stone bottom and sides, keep a positive not do it, etc. After the stone 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 stone 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 stone will be brought into the pollution of stone.
3, the strict control of water wet the stone 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 stone itself the possibility of contamination. Proposed slurry method, including the underside of the stone, 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 stone has been to improve the quality of the decoration.
    (C) 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 stone 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 stone 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 stone, and concrete overlay layer caused by hollowing phenomenon, caused sometimes bent Alice Stone, 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 stone 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 stone 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 stone, the increase in water content of cement overlay. Principle of this method is very simple: to destroy the stone cracks and cleavage between the crystal water crystal, metal salts, while the role of micro-explosion produces the airway open the stone to speed up the evaporation of water, stone 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.