Among the many white marble flooring,marble tiles for sale is undoubtedly one of the most widely used buy marble slab stones. It not only uses white marble to apply high-grade luxury wall floor countertops,but also some people use white marble to play tricks such as clothes, light bulbs and fruit bowls. Loudspeakers, even toilets, etc., but at the same time he is also the most loved and fearful variety, but the white marble is anti-fouling, fragile, difficult to wait for, and some users regret it, especially white marble. The fact that it is yellowing is even more so that many users who love white marble are far away. Want to solve the problem of white haircut yellow, we have to start from the reason of the yellowing of the white marble bathroom, leading to the yellowing of white marble?
The structure and composition of the white marble floor tiles itselfScanning electron microscopy of the most common white marble surface found that on the surface and texture of white and gray marble, there are iron ore particles ranging in size from 2 microns to several hundred microns, some distributed on the surface of the plate, and some are concentrated in Grain.
Oxidation of iron minerals contained in white italian marble is considered to be the main cause of yellowing of white marble tile bathroom. Since most of the bianco carrara marble have a uniform color in addition to the grain part, when the iron-containing minerals randomly dispersed in the marble are oxidized to form yellow or brown hydrated iron oxides, the surface of the board is formed, and the beauty is formed. The stain, this phenomenon is particularly prominent for white marble rock.
The iron in the calacatta marble slab is mainly composed of ferrous sulfide, iron carbonate and magnesium iron silicate, and these iron minerals are dispersed in the white marble granite matrix or the grain enriched in the carrera white marble. When these divalent iron minerals on the surface of the stone are oxidized by oxygen in the air into ferric iron and combined with water to form hydrated ferric hydroxide, it forms what we often call rust, commonly known as spit yellow. If no protective measures are taken, this white marble desk spitting phenomenon will occur 8 to 12 months after the marble is placed. The interesting phenomenon is that the yellowing is not caused by the marble placed next to the heat source, such as the hot water pipe. This indicates that the white marble with black veins spitting phenomenon is closely related to the water.
However, contact with water does not necessarily lead to yellowing of thassos white marble. Thermal shock tests on white carrara marble tile showed that the carrara marble floor tile samples were placed in deionized water at 1525oC for 6 hours, and then the samples were baked in a 100-110oC oven for 18 hours. After 20 such cycles, it was found that only the iron-rich specimens showed a slight yellowing, and the yellowing was much lower than the natural yellowing.
This experimental phenomenon shows that since deionized water has very low conductivity, the rate at which the ferrous iron is oxidized to ferric iron is very slow. Therefore, although the sample is immersed in water for a long time and has been circulated many times, there is no obvious yellowing phenomenon. The results of this test show that the yellowing of white marble flooring is the result of oxidation and hydration acting together on the surface of the marble tiles for sale on the surface of divalent iron ore. These two conditions are indispensable.
Unlike soaking in deionized water, white carrera marble kitchen is easily immersed in an alkaline solution to cause yellowing. The same buy marble slab sample was placed in 15?25oC alkaline water for 6h, and then the sample was baked in a 50?60oC oven for 18h. After 20 such cycles, the experiment found that all the white marbles selected for the experiment had yellowing, while Carrara white marble was the most serious.
The reducing solution easily makes the white carrara marble countertop yellow, because in the alkaline medium, the oxidation-reduction potential of the ferrous iron is oxidized to ferric iron is reduced, and it is easily oxidized by oxygen in the air to ferric iron, ferric iron and The combination of water forms a yellow pollution of the board surface.
The hydrated ferric hydroxide formed by the oxidation of ferrous iron on the surface of the white marble shower by the oxidation of oxygen in the air to trivalent iron and combined with water has an extremely low solubility. Therefore, the yellowing of the surface caused by iron is not easily removed.
The second type of yellowing of white marble flooring comes from the organic matter inside the marble tiles for sale. These organic substances are present in the formation of buy marble slab and are similar in structure to humic plants. These water-soluble organic substances present inside the carrara marble slab are often brownish yellow when reacted with alkaline water. Due to the presence of such organic matter inside the white and gold marble, the marble floor or wallboard which is not waterproofed on the back of the board is wet-mounted, the alkaline water of the cement slurry permeates through the white carrara marble slab and reacts with the organic matter in the carrara marble tile bathroom to produce a colored product. When these colored products are brought to the surface of the carrera white marble countertops by water, a second type of contamination of the stone surface is formed. Even during the use of the white marble price after installation, due to climatic reasons, whenever there is water through the cement concrete and then seep out the surface of the white marble top, it will always bring out colored organic pollutants to the surface of the white marble tile shower.
