Seven assessments, perfect stone maintenance

There is no set of professional specifications for stone maintenance and cleaning in China. The professional quality of the stone maintenance and cleaning practitioners is extremely large. The company's scale ranges from professional manufacturers with complete staff expertise, complete education and training, to family-based work classes that only rely on experience. When consumers face the choice of stone maintenance companies, they often feel at a loss and do not know how to achieve a balance between economics and professionalism. Here, the evaluation items to be made before the stone maintenance is to be explained one by one, and consumers are provided as a reference.

First, the stone surface treatment methods are different, you should choose different stone maintenance points (rough surface and smooth surface maintenance focus)

Generally speaking, it is a very common phenomenon for architects and designers to display the design effect, and the same building uses different surface materials for the decoration of the building. The visual effect of the stone with different surface treatment methods is also It is different.

For example, the polished stone surface has become denser, and the chromonic structure contained in the stone thus exhibits a stronger color change than the original surface, which can create a delicate and magnificent effect. Therefore, the purpose of maintenance In general, it is still mainly to maintain the brightness of the surface of the stone and the brightness of the gloss. The more common maintenance applications focus on protective treatment, wax treatment, brightening (color) treatment, re-polishing treatment, damage compensation, pollution removal treatment.

In contrast, the surface of the stone that is roughened (flame-burning, chiseling, etc.) is intended to express the original feeling of the rough or the contrast of the mosaic as a smooth sheet. The more common maintenance is still based on the regeneration of rough surface, pollution removal, waterproof treatment (should choose a protective material that does not form a surface coating and does not increase the brightness) and damage reinforcement, and do not need to increase the brightness, Because some protective materials or chemical treatment agents may cause the matte stone to deepen in color, if it is used in the arrangement of thick and thin plates, it may bring the color of the light plate and the rough plate closer and destroy the original design. Similarly, smooth maintenance is not suitable for rough slate.

Therefore, when selecting a maintenance project, the owner should carefully consider and evaluate it so as not to pay for the maintenance but not the best results.

Second, different stone materials should have different maintenance priorities

Commercially available natural stone building materials are generally classified into marble and granite. Although from the point of view of geological formation conditions and chemical composition, this classification method is slightly rough and does not match the true characteristics of stone, but the basic properties considered in the maintenance of stone can still be further in accordance with this classification rule. Consider the preliminary basis for the applicability of the maintenance method.

Granite stone mainly composed of cerium oxide usually has a harder property, and its Mohs hardness is about 6-8 (depending on the type of granite). The simple judgment method is that granite is more common metal (such as key). Hard, therefore, when the surface of the feldspar and quartz is scraped with a general iron, the stone itself will not be scratched. The gloss of granite is broken due to foot abrasion or external force, and the frequency of regrind is lower than that of calcium carbonate-based marble. Marble has a Mohs hardness of about 3-5 degrees. The simple method of judging is that marble is softer than ordinary metal (such as a key). Therefore, when the surface of the marble is scraped by a general iron, the stone itself is easily scratched.

Therefore, for the characteristics of different stone, consumers should evaluate the maintenance methods and maintenance frequency they need to perform. All in all, the main consideration for stone maintenance is to understand the weaknesses of the stone from all possible information, and to list the factors that may cause damage to the vulnerability at the installation site, and to seek possible maintenance methods to strengthen the stone. Resistance or reduce the possibility of rapid deterioration, in order to achieve the new effect of stone often.

The specific information needs include the chemical composition of the stone, the nature of the surface treatment of the stone, the hardness of the stone, the characteristics of the stone and the state of the installation method, the matching state between the stone and the surrounding building materials, and the stone characteristics facing the installation environment. The resistance, the stone characteristics are faced with the climatic factors of the place of application.

Third, we should pay attention to the impact of regional climate factors on stone

The aging effect of climatic conditions on stone is very obvious. In the cold zone, if the stone is not waterproofed before installation, the excessive moisture inhaled before snowing may be directly condensed into ice inside the stone after the temperature is lower than the freezing point. Then, the volume expansion phenomenon (the ice is larger than the water in the case of equal weight) causes stress on the interior of the stone and even breaks the stone, causing the stone to rupture. In addition, the acid rain and the erosion caused by the salt rain after being absorbed by the stone are matters that should be evaluated before the stone maintenance project. When considering the maintenance work of the maintenance project, the consumer should also assess the processing capacity and professionalism of the industry. .

Fourth, try to avoid the environmental factors that cause the aging of stone

There are quite a number of factors affecting the deterioration of stone in the surrounding environment of stone installation. For example, the stone installed in the toilet area is prone to acid corrosion or yellowing due to improper cleaning habits. Accelerated wear is likely to occur in areas where the public foot pedal wears frequently. In the kitchen or dining area, the stone is easily stained by oil and color. In the course of stone maintenance work, relevant environmental factors should be taken into consideration to achieve the best maintenance results.

V. Proposed stone maintenance and implementation project to be implemented

After the assessment work should be carried out in advance, the preparation of the maintenance project can be started. After confirming the necessary maintenance items, select the correct maintenance materials and collect the correct operating rules in a structured and efficient manner. Stone maintenance work.

Sixth, choose the appropriate stone maintenance industry

Stone is a complex building material with basic characteristics, and the relevant maintenance technology points are quite extensive. Therefore, at present, the work of domestic stone maintenance is still contracted by professional cleaning company personnel, but consumers are faced with the risk of failure of stone maintenance caused by the uneven technical level of domestic industry. Therefore, consumers are advised to remain active. Establish a basic assessment of the stone maintenance project to understand what maintenance must be done, should choose the industry to do.

Seven, clean the stone surface, should use neutral lotion

After the stone is wet-mounted, the workers are often required to quickly remove the cement remaining on the surface or the joint, or the cement-containing binder, and often use an acidic detergent such as acetic acid, hydrochloric acid, etc., such as the project. The stone has not been applied for protection beforehand or has not carried out effective protective measures, which often causes the residue of acidic chemicals on the surface of the stone, and causes the stone lesions to occur in the future. Therefore, it is recommended that a neutral detergent should be used for stone cleaning under normal conditions.

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