Technical problems in the use of stone protective agent

     Selection of agents for stone door according to the type of stone, stone products application fields, environment etc. many factors to choose. Choosing the right stone protective agent, then we should pay attention to what technology in the process of use. Below for everyone to say that some of the technical problems in the use of stone protective agent.

     1.Water protective agent for water-based environmentally friendly products, organic volatile low, effectively penetrate into the interior of the stone, do not change color and appearance of the stone. Has good abrasion resistance, good air permeability. Water protective agent in use is strictly prohibited the use of animal brush such as pig hair brush, wool brush, brush, brush and other tools, because all the animal are horny, is a mixture of protein and amino acid, in alkaline solution will be gradually dissolve, brush itself is not only easy to broken, but also a large number. Dissolved in containers of protective agent, the protective agent metamorphic container, light yellow, black or thickening, while in the protective agent failure, in addition the water protective agent produced by surface hydrophobic phenomenon is relatively fast, recoatability, so in the first protective agent dip into stone enough, above water repellant should use watering can, towel, brush and other tools based on. If the condition is best to use immersion method, can achieve the best results. In addition, the use of water-based protective agent should not be below zero. After the protection of stone if the maintenance is not good will also affect the waterproof effect of the protective agent. General requirements for protective agent after the completion of construction in 1 ~ 2 days of maintenance, in this period can not be above water is not contaminated. But the experiment shows that some of the protective agent of the curing period is far more than 2 days, some of the 2 days after the beginning of the onset, the best effect to achieve more than ten days or longer time to ask. If contact with water or pollutants in this issue, will continue to cause pollution, affect the protective effect. In the maintenance period to improve environmental temperature will accelerate the curing process, laboratory according to standard methods will 60cI dryer 48h the samples. In this temperature, the most protective agent will significantly enhance the protective effect, there are a few protective agent in 105oC drying after 24 hours will greatly enhance the protective effect, the reason is temperature accelerates the curing process of protective agent. There are a number of protective agent was afraid of high-temperature treatment, if in 60cI second protective agent will destroy it, I'm afraid the applications of the protective agent will is limited, because the external stonework in the summer sun is easy to reach this temperature.

      2. Solvent type door agent: this kind of protective agent characteristics and quality can vary a lot, and agent for quality of permeable protective should has not changed the color stone, severe infiltration coating of good, water resistance, anti pollution ability strong, in alkaline solution in blocking the capillary phenomenon ability, anti permeate back ability is strong and so many advantages. However, because of the quality problems may also have many weaknesses, such as discoloration, anti infiltration capacity is poor, etc.. In use should pay attention to the following several aspects: fire prevention, ventilation should be paid great attention. In the summer high temperature, such as the use of the surface of the phenomenon occurs when the phenomenon of solvent, apply a towel to wipe, wipe off. (3) the use of tools can be brush brushing tools, but can not use plastic watering can, because the protective agent of solvent dissolved rubber ring the watering can break down soon. This is contrary to the protective agent of water.

     Use of of stone material protective agent, the bond strength of stone and cement will generally fall, decreased amplitude and protective agent of waterproof performance, stone protective agent waterproof effect is better, the bond strength will generally decrease, and has little effect on the bond strength of protective agent, the waterproof effect generally aren't very good. Speaking from the waterproof performance, water absorption rate compared with the results of the experiment should be better, but for wet paste board, waterproof results generally aren't very good. Speaking from the waterproof performance, water absorption rate compared with the results of the experiment should be better, but for wet paste board, waterproof result is too high will lead to the decline of the stone and cement bond strength. Integrated the advantages and disadvantages, in actual construction of wet paste plate protective agent waterproof index generally selected 50% of ~ 80% more appropriate, when bond strength decline rate is generally not more than 50%, can achieve 0.1MPa about, that adhesion of stone for lOt / m, this for general on the ground and the walls have enough the.

        Finally in stone protective agent selection and use there are two points should be paid attention to, protective agent characteristics, requirements for clear construction area, for example, oil proof type fluorocarbon preparation in external wall dry hanging glue joints should be before choosing prepared for the experiment, in order to avoid certain kinds of sealant and stone binding capacity decreased, cracking phenomenon. Second door, use should be listed as a process, can not save when asked, not because the rush period and relationship maintenance time. About the use of stone protective agent more some technical problems, you are welcome to point of advice, or a message on the Internet, our service engineers to your stone has been a free agent to provide engineering solutions.