Ambry mesa of natural stone material prevention and treatment method

A, the formation of rusty spot pitting mainly by the iron in the stone by the oxidation reaction and into. Iron, water, and oxygen to form is pitting the three big essential factors. Usually, we according to different levels of natural reaction will be divided into two categories: the (a) deep rusty spot. A lot of stone material breed especially granite contain a certain proportion of iron ingredients, when these iron composition and water and oxygen after full access, it would cause oxidation reaction, generating rusty spot. Very easy to appear this kind of natural stone material such as: American white linen, shandong white linen (floret), rust stone (SLATE), etc. In addition, the cement alkali in water under the function of stone material and the iron in the reaction, will be rusty spot.
(2) the surface rusty spot. Stone in mining, processing, transportation, and installation process, surface and iron objects after contact with a iron residue, these iron residue will and moisture in the air, the oxygen to produce oxidation reaction and the generated rusty spot.
Second, the processing of the processing of rusty spot pitting method is mainly used to studied for processing. In processing, derusting should pay attention to the following: (a) try to avoid using oxalic acid direct cleaning stone rusty spot, because the rusty spot simply oxalate (Fe2 +) REDOX, oxidation reduction of iron ion remains not stability, it is easy to water and oxygen in the air and oxidation reaction to generate again, and will rust as oxalic acid solution flow and further expand the area of the rusty spot. This is why when using oxalic acid derusting the rusty spot in the bigger the more, in addition to reason.
(2) choose studied, must choose good quality stone products. Because good studied the ingredients except acid, and I add other than adequate additives to keep REDOX reaction to the stability of iron ions. Use this studied the rusty spot even if not treated do protective processing, also can keep a long time can't recurrence. Instead, some studied some acid mixture is simple, and can't keep REDOX reaction to the stability of iron ions, and the recurrence rate is high.
(3) of marble and granite because of different ingredients, is not the same as the nature. Marble ingredient for calcium carbonate, in alkaline; The granite mainly consists of silica, in acid. So, be sure to use studied want to distinguish marble and granite studied studied. Granite studied absolutely can't used for marble rusty spot treatment.
(4) surface treatment, just fired with studied in the surface coating can brush. Sometimes, also can use surface grinding &polishing methods to solve the; The relative to deal with deep rusty spot is more complex, need to keep certain dose and reaction time. Sometimes you need to be repeated use to reach the ideal effect.
(5) stone in use after construction, studied and then rinse advice again, after drying must use high quality stone conservation agent well protection processing. Purpose is to completely remove oxidation reaction of the residue after, prevent oxidation reaction again.
Three, rusty spot of prevention of rusty spot according to prevent major is the formation of the three elements of water, oxygen, iron effective control. Combined with the management of DuoNian experience, we will prevent rusty spot the main effective method summarized as the following: 1. The stone in construction before, must adopt high quality stone conservation agent on the stone material for six surface protection processing, blocking stone material and the water in the iron contact.
2. Try to avoid using high alkaline cement for the stone material cementation construction, reduce the alkali and stone cement in the reaction of opportunities. Iron
3. Try to reduce the volume of water used when construction.
4. (mass) and avoid iron acid and alkaline substances direct contact with stone material.
5. To iron rich stone varieties, recommended dry hanging method, so as to avoid the construction of wet construction method.

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