All kinds of floor construction, if not handled properly, there will be water on the ground. Many people do not know why there will be water on the ground. Do you know how the water on the ground will affect the overall ground construction? In fact, the existence of water on the ground base is not conducive to our construction, and the construction of epoxy floor paint is afraid of the water on the ground. Therefore, before construction, we must deal with the problem of surface water, and make a treatment plan according to the situation of surface water before construction. Specifically as follows: 混凝土含水率应小于9%，否则应排除水分后方可进行涂装。排除水分的方法有以下几种：
The moisture content of concrete should be less than 9%. Otherwise, the water content should be excluded before coating. There are several ways to remove moisture:
A) Ventilation: Enhance air circulation, accelerate air flow, take away moisture, and promote further volatilization of moisture in concrete.
B) Heating: Increase the temperature of concrete and air, accelerate the rate of moisture migration to the surface of concrete, and make it evaporate rapidly. It is advisable to use forced air heating or radiation heating. The combustion products (including water) produced by direct heating with fire source will increase the temperature of air fog point and cause water to condense on concrete, so it is not suitable to use them.
C) Reducing dew point temperature in air: dehydrating dehumidifier, epoxy floor paint dehumidifier or introducing outdoor air (introducing outdoor air dew point lower than concrete surface and above the temperature) and other methods to remove water vapor in air.
1. medium coating
(1) Before construction, it is necessary to keep clean. If debris adheres, it is necessary to remove and mix the main agent and hardening agent according to the correct proportion and mix them fully.
(2) Quartz sand should be added to the mixed resin.
(3) Apply the material evenly with a trowel knife;
(4) It takes less than 30 minutes to complete the construction of the mixed materials.
(5) Handover treatment should be done at the construction handover site;
_The curing and hardening time of the middle coating is more than 8 hours.
2. Plain treatment
(1) The basic plain ground shall be cement flour or grindstone ground;
(2) The vegetable land should be kept in good health for more than 28 days, and the water content should be less than 8% before it can be removed if there is unevenness or empty drum in the construction of the vegetable land.
(3) Leveling the ground with epoxy mortar;
(4) Oil contamination of plain land should be cleaned thoroughly.
(5) Keep the construction site dry and clean before construction;
3. bottom coating
1. Keep clean before construction. If there is any debris adhesion, remove the main agent and hardening agent according to the correct proportion and mix them fully.
(2) It takes less than 4 hours to finish the construction by adjusting the proper viscosity of the mixing material according to the ground conditions.
Thirdly, the curing and hardening time of the base coating is more than 8 hours.
The 4. batch of soil layer
1. Mix the main agent and hardener according to the correct proportion and mix them fully.
(2) Use batch knife to coat the material evenly;
(3) It takes 30 minutes to complete the construction of the mixed materials.
There is water in the ground base, which has some influence on the construction and the method of removing water. In fact, the drainage of the ground base is heated to increase the temperature of concrete and air, accelerate the rapid evaporation of water in concrete, so as to remove water.
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