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The surface hardness.
 PUKA Puka concrete sealer range: old concrete, terrazzo, mortar, plaster and all exposed surfaces of concrete and building materials, which are widely used in industrial floors, electronic medicine shop, supermarket, parking, food production base, runways, sports center, from the sand. Peeling, dusting. Loose, cracking and other low-grade concrete, after hardening treatment can permanently improve the strength, dust, hardening, wear-resistant, impervious to prevent the generation of fine cracks and weathered; use wax immediately appear on the ground surface by mechanical Jun like luster, use the longer, the better the gloss. Without waxing maintenance. Easy cleaning and maintenance.
 Puka PUKA concrete sealer also has a good seal, which can be deep on the concrete closure of the concrete become solid entity, to prevent infiltration. Extending the life of concrete, dust-proof effect of up to 20 years. While making the floor easier to clean and maintain. Sealed concrete curing agent is a colorless transparent liquid material, easy to use, non-toxic, non-flammable, infiltration, can be permanently sealed concrete, meets all VOC rules are environmentally friendly products. The product consists of inorganic chemical active substances and complexes composition, through effective penetration, with concrete and masonry in the chemical composition of a chemical reaction, so that each component of concrete cured into a solid entity, resulting in a clean, compact whole, greatly improve various properties of concrete. ) Permanent pressure, no delamination. After the material and the base surface overall chemical reaction occurs to form a inseparable whole, not on the basis of the surface of a film, and keep breathing function of the base surface, so afraid of moisture, will not delaminate. Concrete permeability hardener material itself, remaining in the material will be white surface, it is generally vendor will tell you to wash with water to penetrate into the ground after a certain time, the excess material is clean, otherwise it is easy to white ground .
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Concrete permeability hardener also called curing agents, hardening agents, penetrating agent on the market there are two acidic and basic, are aqueous. Its role is to increase the ground strength, hardness, resolve concrete problems of their own. But the difference between acidic and alkaline materials is large:
 
One: penetration hardener material concrete own characteristics, basic not white, no matter what is in the ground. It reacts with the ground, penetrating ground 3--8mm. The acidic material remains on the surface, the material crystallized at the surface, back to base whitening phenomenon prone, which is why the material is rinsed with water to the day today. If the material is acidic, while many products are construction materials while polishing, obtained through physical effects such a way, and was able to see the intensity and brightness! How concrete sealer was originally permeable product, if not a certain chemical reaction time, how might then be able to make high strength; even when effective, may not reach the real life is not long, maybe 2--3 years We have to retrofit the new!
 
Two: to be based on situation on the ground, the choice of suitable materials, suggestions should choose Puka PUKA brand lithium-based concrete sealer, better strength, long life! Currently on the market in addition to lithium-based products, as well as sodium based products, its disadvantage is that的表面硬度。
PUKA普卡混凝土密封固化剂使用范围：新旧混凝土、水磨石、砂浆、石膏及所有裸露混凝土和建筑材料表面, 该产品 广泛使用于工业地坪、电子医药车间、大型超市、停车场、食品生产基地、飞机跑道、体育中心、对起砂．起皮，起尘．疏松,开裂等低标号混凝土，经硬化处理后能**性提高强度,防尘、硬化、耐磨、抗渗，防止细微裂缝的产生和风化；在经机械竣面的地面使用会立即出现打蜡般的光泽，使用越久，光泽度越好。无需打蜡维护。清洗维护方便。
普卡PUKA混凝土密封固化剂同时具有良好的密封性，其能对混凝土进行深层封闭，使混凝土成为坚固的实体，防止渗透。延长了混凝土的寿命，防尘效果可达20年以上。同时使得地面更易于清洗和维护。混凝土密封固化剂是无色透明液体材料、使用方便、**、不燃、渗透力强、可**性密封混凝土，符合所有VOC规则属环保产品.该产品由无机物、化学活性物质和络合物组成，通过**渗透，与混凝土和石造物中的化学成分发生化学反应，使混凝土中的各成分固化成一坚固实体，从而得到一个无尘、致密的整体，大大提高混凝土的各种性能。） **性耐压、不脱层。材料与基面发生整体化学反应后，形成一个不可分离的整体，不是在基础表面成膜，并可保持基面的呼吸功能，所以不怕潮气、不会脱层。凝土渗透硬化剂材料本身的特性，残留在表面的材料会发白，所以一般供应商都会告诉你，渗透到一定时间后要用水冲洗地面，把多余的材料冲洗干净，不然地面就容易发白。
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混凝土渗透硬化剂也叫固化剂、硬化剂，市场上目前有两种渗透剂酸性和碱性，都是水性的。其作用都是增加地面强度、硬度，解决混凝土的本身问题。但是酸性和碱性的材料差别很大：

一：混凝土渗透硬化剂材料本身的特性，碱性的不会泛白，不管是用在什么地面。与地面发生反应，渗透地面3--8mm。而酸性的材料残留在表面，材料结晶在表层，容易出现返碱泛白的现象，这也是为什么要当天上材料当天用水冲洗。如果是酸性材料，很多产品是一边施工材料一边打磨抛光，通过这样方式获得物理效果，而且，当时就能看到强度和亮度！试问混凝土密封固化剂原本是渗透型产品，如果没有一定化学反应时间，怎么可能当时就能做出高强度；即使当时**果，可能达不到真正的使用寿命也不长，也许2-3年就得从新翻新改造！

二：要依据地面的情况，选用合适的材料，建议应该选择普卡PUKA牌锂基型混凝土密封固化剂，强度更好，使用寿命长！目前市场上除了锂基型产品，还有钠基型产品，它的缺点是

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