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正常的金刚砂耐磨地面的整体强度和表面硬度都非常好，一般不会出现地面起灰现象。但在施工或养护不当等情况下，也容易出现强度不够、地面起灰的现象。其主要原因如下：

1、金刚砂耐磨地面材料质量问题造成地面起灰：如材料存放期过长造成变质，或其中的原材料——高标号水泥变质；
2、施工不当造成地面起灰：过早开始洒材料，造成水灰比偏大；
3、养护不当造成地面起灰：养护剂涂抹太少，或养护剂质量有问题，根本起不到很好的养护作用，造成地面失水过快被烧坏；
4、过早地投入使用造成地面起灰：地面还未达一定的强度就投入使用，车轮、鞋底等与地面磨擦损坏表层；
5、低温受冻、或室外施工时过早淋雨均有可能造成地面起灰。

金刚砂耐磨地面起灰的补救措施：在地面完全干燥后，使用KD700进行硬化处理，科地福KD700混凝土密封固化剂是一种渗透性的水性制剂，它能渗透至金刚砂耐磨地面内部，生成一种凝胶，从而提高起灰地面的密实度和硬度，并且持久** 冷库地面在-11℃以上混凝土的硬化，这是发生水化反应并获得强度的**温度。但实际情况是，混凝土在室温下硬化却暴露在低温条件下，例如极端冷库地面，液化天然气罐，天然气的沸点为-162℃。
温度从冰点低至-200℃范围时，水泥混凝土地面强度明显高于室温。混凝土冷却时如果是湿的，则在上述温度下的抗压强度约为室温下的二到三倍。但对于气干混凝土，抗压强度则增加得很少。
潮湿和干燥混凝土在低温冷库地面，强度增长的差别与硬化水泥浆体中冰的形成有关。凝胶孔孔径越小则其中水的冰点温度越低，因而吸附水在-80℃—-95℃温度才能完全冰冻。与水不同，冰能承压，冰冻混凝土**孔隙率极低，因此强度高。冰的强度和线胀系数随温度变化，因此冷库地面水化水泥浆体的强度和线胀系数的变化很复杂。
Overall strength and surface hardness normal Emery wear floor are very good, generally gray phenomenon does not appear from the ground. However, in construction or improper maintenance, etc., it is also prone to strong enough, the ground from ash phenomenon. The main reason is as follows:
 
1, Emery wear floor material quality problems caused by the ground from the ashes: A material deterioration caused by long storage period, or where raw materials - high-grade cement deterioration;
2, improper construction from gray ground: early start sprinkling material, resulting in water-cement ratio is too large;
3, conservation improper ground from gray: curing agent applied too little, or curing agent quality problems, can hardly good conservation role, causing excessive water loss ground to be burned;
4, prematurely put into the ground from the resulting ash: the ground has not yet reached a certain strength to put into use, wheels, shoe soles and other damage to the surface of the friction with the ground;
5, low temperature cold, rain or outdoor construction may have caused the ground prematurely from ash.
 
     Emery wear floor from ash remedies: After the ground is completely dry, use KD700 be hardened, Kedi Fu KD700 concrete sealer is an aqueous formulation permeability, it can penetrate to the interior Emery wear floor, generating a gel, thereby improving the ground from the ash density and hardness, and lasting hardening effectively over -11 ℃ cold concrete floor, which is the hydration reaction occurs and the lowest temperature strength. But the reality is that the concrete has cured at room temperature, exposure to low temperature conditions, such as extreme cold ground, liquefied natural gas tanks, gas boiling point of -162 ℃.
Freezing temperatures as low as -200 ℃ range from concrete floor strength was significantly higher than room temperature. When concrete cooling if it is wet, the compressive strength at the above temperature is about two to three times at room temperature. But for the air-dry concrete, compressive strength is increased very little.
    Wet and dry concrete in cold storage ground, increase the intensity differences and hardened cement paste in ice formation. The smaller the pore size gel which lower the freezing point of water temperature, thus absorbed water at a temperature of -80 ℃ --95 ℃ to completely freezing. Unlike water, ice can be confined, frozen concrete and effective porosity is extremely low, and therefore high strength. Ice strength and linear expansion coefficient varies with temperature, so cold surface water intensity and linear expansion coefficient of cement paste changes are complex.

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