Product of the stone of this nature is more and more widely used in the construction, on the one hand with building function, and partly because it has the effect of the decorative beauty. Now we are in some large hotels and other buildings can be seen the stone in which its solemn. Elegant. Magnificent decorative effect was praise. However, due to the natural characteristics of stone, but also determines the stone will produce a variety of problems in its use, or even cause damage to this regard and the stone itself, related material, on the other hand with the installation and use of environment.
We often see in some of the luxury hotels and other large public places stone laying on the ground local or a large area of damage, like cracks, broken, pulverized, holes and other phenomena, these phenomena, especially in the ground with marble the most common. Damaged parts and easily contaminated and difficult to remove, people will see will be full of dirt-riddled ground, its elegant surrounding environment and atmosphere formed a great contrast to greatly reduce the use of stone value and effect. But people can not easily and simple to replace the damaged stone, on the one hand, will result in large losses of materials and labor, on the other hand the owners unbearable closed down replacement stone loss. Therefore, to explore and use effective methods and materials to repair the damage to the stone floor is very important.
The causes of damage, stone ground
1, ground-based part of the settlement and tear the ground stone Breakage.
2, the alien destruction of ground stone broken.
Select from the stone sense the marble flooring left troubles. One hand because of the people to choose the stone often only pay attention to tone, not taking into account the differences in weather resistance and abrasion resistance of marble and granite. On the other hand, was originally imported stone, mostly marble, when the granite processing technology so advanced, but the tone and style of marble elegant majority, which makes indoor stone selection marble become a fashion, which is a major cause of many problems of stone ground marble.
4, marble, natural defects. Some of the marble there is more natural defects like cracks, sand holes, loose, half-cooked. These defects, if no prior good repair and make up, then laid to the ground by the moisture and harmful pollution, it will take the lead in the lesions occur in the defective parts and destruction and spread. Lines like silver beige, Golden beige, Emperador.
5, humid environment. The main component of marble is calcium carbonate, it will swell in the water under the stone structure is more loose parts of the first burst open, leaving a pit on the marble floor. The formation of craters in a humid environment will continue to powder, a qualitative change in the surrounding stone loose.
6, error protection. Part of owners and construction is concerned, although they are in advance on the marble brushing repellant, but the shop to the ground or there is a problem.This is due to cracks and loose parts of the stone did not get a better fix on the back of the stone due to wet a greater water pressure quickly destroy. The other hand, in the front of the marble made a protection, but on the ground water will be along the stone cracks and loose parts into the stone house, stone and humidity increase, thus creating a vicious cycle.
7, the wear and tear damage the luster of the marble floor. The lower the hardness of marble strength is poor, therefore, marble floors, especially the location of pedestrians more soon will lose their luster. Such as corridors, vestibules, counter.
Second, to prevent the stone ground damage response
Cause of damage on the stone floor above analysis, we can see that in addition to as much as possible do not choose marble flooring with loose material, water is to cause a major cause of damage to stone.
Problem of the water, we all know the stone coating protectants, but this approach is not fully effective, and once and for all. We have done some tests, the humidity of the ground stone mostly in more than 5%, if the stone is always to maintain a humidity even crack damage and holes patched, does not take too long, it will appear in other parts of the problem. This put an end to the water. In fact many of the buildings after a period of ground-based part is there will be no greater humidity, there was no real water, the reason why make the stone long-term to maintain larger humidity is in front of cause analysis pointed out that, as moisture in the stone forming a vicious cycle, that is, the first stone on the back of the water and wet destruction of the stone, this part of the water in the water on the surface is not completely run away down the stone cracks and loose parts ran into the stone within the loop, so that the water long-term role in stone, plus ground maintenance lead to the ventilation of the stone to reduce stone no problem is impossible. In fact we have found the key to problem-solving and thinking, clear the stone and the stone on the back of the water, and then to repair and make up stone damage - blocking must stone infringement by water again.
Three stone floor repair methods and materials
An on-site observations. No problems with the stone floor repair to the scene to observe, to fully grasp the extent of damage and condition of the stone, to analyze and identify the root causes of problems, to pay attention to the business of its surrounding environment, exploring with the owner to repair the operating time on the arrangements. It is a good to submit a full and complete and workable stone repair report allows owners to confirm.
Stone ground rehabilitation program, in consultation with the owners to find a prominent position try to do a ground. The one hand to test the feasibility of the program, on the other hand allow the owners to confirm the repair effect, to avoid unnecessary disputes. Try to do the piece of ground is best able to observe a period of time, observe the stone humidity changes, this period should pay attention to observe the repair parts for peeling and re-emergence of the damage phenomenon to the repair program be amended accordingly.
3, stone repair and compensate for the material. DNS stone to strengthen the adhesive series is a strong permeability and activity of the polymer resin, Applied Materials, it AB bicomponent form of mixed use. Completely transparent and clear as water liquid suitable for a variety of colors of stone to repair and compensate for processing. After the liquid was painted blown stone defective parts will penetrate into the defect site of the stone and produce a chemical hardening process of hardening and stone materials into one. Because this process through a variety of defects in the stone, such as fissures, cracks, crack, holes and loose, etc., which will strengthen the loose material and to repair these defects. Stone after grinding and polishing after not only see a perfect repair, and the stone remains of the natural texture. The ground stone damage is also true to some phenomenon, and DNS stone to strengthen the adhesive with good adhesion strength and weather resistance, this material is very suitable for the repair process of damaged stone ground.
Ground stone repair process. More damaged, indoor marble stone ground, where we use DNS stone reinforced adhesive series of indoor and beige marble floor crack damage, holes and loose powder to compensate and repair an example to describe the process.
(a) will be repaired by cleaning the stone ground. Damaged stone cracks and holes filled with dirt, then need to thoroughly clean with a cleaning agent. The cleaning agent must be neutral, otherwise it will increase the extent of damage of marble. To use the hard point of the brush repeatedly to clear brush cracks and holes in the dirt in the washing process and use a vacuum suction machine to suck the net slop, then add clear water to brush and then absorbed by water sewage net. This process should be as fast and effectively in order to avoid excessive infiltration of water into the stone and the bottom. Ground painted over December, but also to the December agent traces December cleaned in the dirt before cleaning.Note that the cracks and holes in the dirt and wax track is clean, otherwise it will affect the stone to strengthen the degree of adhesion of adhesives and stone.
(b) polished floor. Some stone ground in the initial laying of the notches, you must first before cleaning the ground coarse grinding to eliminate the patchwork notches. In addition, it has two aspects of meaning, on the one hand, after coarse grinding stone surface damage, stone microporous safety in the open state, there will be conducive to a stone full of dried and stone to strengthen adhesive penetration; another , ground stone holes before burst open at first showed a swelling from the dark state, in fact, when this part of the stone subsurface voids of the peeling, if this was not to polish their exposure, then subsequent ground repair, grinding and polishing it will show again the patch. There is also a phenomenon should pay attention to some damage to the ground prior to use marble glue and glue repaired due to poor penetration and adhesion of the rubber can not be a good bonding with the stone, will be varying degrees of shedding or peeling, and so also need cleaning before these plastic track clear to ensure that the overall restoration effect of the ground.
(c) to dry or dry ground. The previous section has highlighted the water or wet stone destructive, and therefore as soon as possible after cleaning and thorough ground-doing has become an important part of the repair work. In addition to the end of the cleaning process as soon as possible and reasonable drying method, drying time and related equipment is very important. Drying methods varied as natural drying, air-dried, drying equipment, etc., according to the environment and conditions to determine. In general, the drying time is relatively long make the ground dry, relatively full, but often construction time requirements limit the drying time. Natural drying and air-dried, very economical and convenient drying method, but time is relatively long. If time does not allow for too long drying time then you need to use some of drying equipment. Heating device such as fans, dehumidifiers, or on the ground. But no matter which kind of fixtures and equipment, natural airing more than two hours, using a heating device, especially the large temperature difference will stone dew. The ideal ground and humidity control in less than 3%.
(d) the ground dries out after can be painted on the ground stone to repair scratch DNS stone strengthen the adhesive. For a partially coated scratch or the entire board coated scratch depends on the extent of damage to stone. Generally speaking if the ground is only a partial concentration of a few pieces of stone cracks, you can direct the stone to strengthen the adhesive coated blown crack site. If a large area of ground stone dehiscence and holes, then it needs to be painted on the ground damaged the stone scraping stone to strengthen the adhesive.
DNS stone to strengthen the adhesive series, the main difference is in the hardening time and the appropriate type of stone. Breakage and holes like beige marble repair using H955 or H960. H955 on marble and granite small cracks and holes in good repair at room temperature (25 degrees) about 16 hours hardening time. H960 repair cracks and small holes in the marble and granite have a good effect, the hardening time at room temperature (25 degrees) about 6 hours.
DNS stone to strengthen the use of adhesives must operate in accordance with the instructions provided by the supplier and with the proportion. Stone to strengthen the mixed adhesive liquid poured on the ground (note the time not to splash too much, can be coated scratch 1-2 square meters is appropriate), the sub-thin stone scraping a layer of iron scraping Tu scraping, and then the next section to be dealt with on the ground stone to strengthen the adhesive. Time to observe first coated scraping the ground, you will see the liquid part of the cracks and holes penetrated down again to add the stone to strengthen the adhesive, the method to other parts of the excess liquid to scrape past or pour some stone to strengthen stick mixture up Reapply scraping. Do a cycle of reincarnation, attention must let the cracks and holes infiltration full stone to strengthen the adhesive.
Construction site to maintain the open air, if the conditions and time permitting, the coating was scraped off the stone to strengthen the adhesive on the ground can be dry set where hardening. If conditions and time allowed, then they would have after the completion of the Tu scraping on the ground capped paste layer of PVC film, so its up to the required hardening time of 80% after their leave.
Stone coated scratch the stone to strengthen the adhesive can be ground after the adhesive is fully hardened ground and polished. First use when grinding coarse No. grinding stone block stone surface hardening strengthen the adhesive wore off, and then conventional grinding and polishing, grinding and polishing on the ground (note, be sure to wet grinding wet cast). Not big corner for Mill can use a handheld grinder for grinding and polishing, otherwise it will affect the overall effect on the ground.
e on the ground, grinding and polishing is completed in a timely manner to clean up the sewage left by grinding and polishing. Protective treatment but also on the ground in the ground is dry, to avoid future stone damp damaged again. The choice of the protective agent in addition to have a good waterproof performance, for the special environment of the hotel restaurant. Hospital should also consider the performance of antifouling oil, of course, be sure to select the permeability repellant.
, Marble surface hardening and polishing
Now some foreign professional companies have developed a number of enhanced products for marble surface and related technologies. These products and technologies are basically common means of certain chemical materials, brushing the marble surface chemical bonding occurs, thereby increasing the strength and hardness of the marble surface, increasing the wear resistance of marble and stone. Shiny marble floors damaged, you can re-polishing or grinding and polishing to restore its surface gloss. Repair damaged stone floor, clean and bright, perfect as ever ground to show in front of people. It should be noted that this is just a move to remedy the situation, to prevent and reduce stone ground damage but also from the very beginning to start, from the choice of stone, the stone necessary repair and protective treatment and scientific construction began. The only way to fundamentally prevent the occurrence of a number of issues, allowing the owners to avoid the resulting economic losses, so that the stone to more permanent natural beauty.