Common methods of stone conservation in rainy season

   June South and North into the rainy season, rainy summer is coming. Wet stone care is much more trouble than dry stone, but the project can not be postponed because of the rainy season. This article will carry on some simple introduction to the maintenance of stone material in rainy season.

In many parts of China, especially south of the long rainy season, stone conservation construction generally in the dry plate construction, due to the rainy season to the maintenance of stone material construction brings all sorts of problems, to solve the rainy season stone conservation construction is imminent and the construction unit dream want to solve the problem.

Stone conservation principle is the ionic states of the curing agent in the active ingredient and the stone pore wall surface water for chemical reaction, so that the silicon atoms or silicone chemical bond with the surface of the stone to connect, from outside to inside the stone internal pore surface grow into a complex network structure. In recent years, with the development of chemical science and technology, the synthesis ability of organic silicon new products is also increasing. Stone conservation and construction of the rainy season has been a very good solution, and now the rainy season, the construction of stone conservation to talk about some of the specific measures and programs. From the point of view of stone conservation principle, the curing agent is reacted with stone in the ionic state of water, effect of water content on the surface of the stone to curing agent in the pores of the curing reaction is not necessarily, but such as maintenance construction damp stone to stone drying. The curing reaction is slow, formed by the curing layer there is no dense holographic plate. Sometimes the water content in the pores of the stone is too high, such as the use of solvent type curing agent is not the solute into the pores of the stone, it can not reach the ideal curing effect.

In the renovation is wet wall, can be exterior stone surface slightly dry with a strong penetration emulsion stone conservation agent repeatedly brushing can be (at least 2 times). But for the wet stone containing water spot, can only use the first to wash and then bake and then brushing method can be used for maintenance treatment.

Water spots is inside the stone containing has deliquescent salt that Yi Chao saline solution of a lot of moisture adsorption in the air, caused by the stone surface has obvious trace of wetness, no matter how the weather is outside changing. These wet marks are can't do it. When treatment of such plates, because the stone surface is alkaline, can be used acidic cleaning agent to clean to neutral, and then the stone surface forced fast drying, fast curing agent with solvent based curing agent for curing. Such as the use of stone curing agent for curing, because the curing reaction is relatively slow (usually 24 hours) in the curing reaction has not been completed before the salt and alkali will continue to return. And solvent type fast curing type stone conservation agent of curing reaction time faster, 15-40 minutes can be reached curing effect, and can effectively curb all kinds of saline once again back to the stone surface, so as to achieve the effect of long-term prevention and treatment of water spots.

Wet stone compared to the maintenance construction of dry stone has its certain defects, curing agent in the wet stone internal pore surface to form the mesh protective layer than in dry stone internal pore surface to form the reticular protecting layer of dense and protective effect of relatively weak, but it can in rainy season, shorten construction period and improve space utilization, so there are many of the construction unit of recognition.

Now available in the market has been applied to wet stone protection of wet stone materials, construction units encountered in the rainy season or the duration of the project, the use of such protective agents on the construction of stone. This kind of protective agent can be finished in the first door construction specifications of the project board or wet by the rain all kinds of stones. It is understood that the current domestic enterprises in the implementation of some special process, to avoid the rainy season or humid environment and affect the construction of the stone slab.