Conditions of dew condensation on epoxy floor: The temperature and humidity of the construction environment of epoxy floor affect the generation of dew point, so the construction of epoxy floor paint can not be separated from the control of dew point. The dew point is expressed by the temperature value, which is the result of the combined action of temperature and humidity. The dew base can not be used for epoxy floor construction, so in the construction of floor paint, in order to avoid the harm caused by dew, the surface temperature of the coated material should be higher than the dew point of 3 C before coating.
When the humidity is unsaturated, if the temperature drops and the air becomes cold, the relative humidity rises. When the temperature drops to air humidity saturation, the moisture begins to dew, and the temperature is called dew point. Under dew point, moisture in the air condenses and deposits on the surface of all objects. Dewfall is most likely to occur in the evening and early morning, with different seasons and weather conditions, sometimes lasting until the next morning. Therefore, in rainy and heavy fog, the floor painting work should be stopped.
How to prevent floor exposure:
There are many ways to prevent surface condensation of underground garage.
Refrigerating dehumidifier or hygroscopic agent to reduce moisture content;
(2) strengthening ventilation to increase the air velocity of condensation surface, so as to accelerate the evaporation of water.
(3) increasing the surface temperature of condensation, so that it is higher than the dew point of the exposed air.
Advantages and Disadvantages: Refrigeration dehumidification or hygroscopicity absorbent used in closed space is better, but the effect of the garage for continuous ventilation is not good, and the running cost is higher, for the dewy ground can not be quickly dried. Increasing the air velocity on the condensation surface is also an option, but to increase the ground air supply system, it is necessary to increase equipment and pipes, and at the same time, it will increase operating costs and noise. It is also feasible to increase ground temperature by burying heating cables under the main lane, but the operation cost is higher.
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