由于大楼位居要枢，相对地污染也特别严重。由于石材本身具有毛细孔及吸水性，空气污染，灰尘加上空气中的酸气，汽机车的废气等，日积月累地附着于石材表面，当下雨的时候，酸雨会加速这些污染对石材的侵蚀且吸附在石材的毛细孔内，造成不易清洗的污斑，尤其对于火烧面的石材来说，这些污染形成的速度更快，且不容易清洗，仅使用市售的清洗剂根本无法去除这些污染;若是光面的石材，这些光泽很快就被侵蚀掉。
The building in the drive, relatively pollution is particularly serious. As the stone itself has pores and water, air pollution, dust and air in the acid gas and steam locomotive gas, accumulate over a long period of time attached on the surface of the stone. When it rains, acid rain will accelerate the pollution on the stone of erosion and adsorption in the stone of the pores of the, resulting in easy to clean stains, especially for the burning of the surface of the stone, the pollution formation speed faster, and it is not easy to clean, only using a commercially available cleaning agent cannot remove the pollution; if it is a smooth stone, the gloss soon is eroded away.

因此，要去除这些污染，可以使用客林 石材清洗剂，这类石材专用的清洗剂可以将渗入毛细孔内的污染完全去除，且不会伤害石材。如果要防止石材再一次被污染的话，可于石材清洗干净后，在石材表面干燥的情形下，再作一道防护处理的工作，这种渗透性的防护剂常用的有客林 墙体防水宝、石材保护剂，这两种防护剂可以渗入石材内部，形成一道防护层，具有防水、防污、防止泛碱、防锈斑、防油污、防风化、防老化、耐酸碱、防茶渍、可乐、酱油等造成的污斑的效果，并能有效控制白华的产生，且不损及石材原有的透气性，平常清洗工作只需用水擦拭即可达到效果，无需使用其他的清洗剂。
Therefore, to remove these pollution, you can use the guest Lin stone cleaning agent, this kind of stone special cleaning agent can penetrate into the capillary hole pollution completely removed, and will not damage the stone. If you want to prevent stone again polluted, in stone after cleaning, in the case of dry stone surface, then make a protective treatment work, the permeability of the protective agent used a Ke Lin Bao, waterproof wall stone protective agent, the two kinds of protective agent can penetrate into the interior of the stone. The formation of a protective layer, waterproof, anti fouling, prevent rust spots, efflorescence, anti oil, anti weathering, anti aging, anti acid and alkali resistant stains, tea, cola, soy sauce and so on cause effect, and can effectively control the Bai Hua, and does not damage the original stone and the permeability, the usual cleaning work only water wipe effect, without the use of other cleaning agent.
外墙污染的事前防护处理：一般来说，石材的外墙均有相当之高度，一旦造成污染后再来清洗，施工极为不便。如果事前能做好防护处理的话，完工后便没有污染上的问题，日常的清洗工作也只需用清水擦拭即可，而且施工前的防护处理成本较低、施工较容易，使用石材保护剂，这种的突破改善了以往防护处理费时费力的困扰，这种工法在国外已被广泛应用在石材工程上。
Protection treatment of external wall pollution: in general, the stone walls have a considerable height, once the pollution caused by cleaning, construction is very inconvenient. If the prior to do a good job in the door handle it. After the completion of no pollution problems, daily cleaning work is only needed water wipe, and before the construction of protective treatment cost is low, construction is easier, stone protective agent, the breakthrough to improve the previous protective treatment time-consuming problems, this method in foreign countries has been widely used in engineering stone.
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