Epoxy flooring and waterproof layer actually have a considerable relationship, many people think that epoxy is "waterproof", so that pay no attention to waterproof layer, the consequences are very serious, often see hollow cracked epoxy flooring, which is very likely related to the following no waterproof layer or waterproof layer has failed, the remaining how to solve the problem of waterproof layer. It seems that the method of structural waterproofing is not the same as that of making epoxy flooring. The only way to make epoxy flooring is to measure moisture content and strength of the base when required. That is to say, it meets the requirements. Once there is water below, any flooring can hardly be blocked.
Epoxy resin has a certain wetting force on wet surface. Especially when polyamide resin is used as curing agent, it can be made into underwater construction coatings, which can squeeze out the water on the surface of objects, and can be used for emergency repair of underwater structures and anti-corrosion construction of underwater structures. Waterproof layer has an important influence on the service life of epoxy floor paint, especially the epoxy floor system of underground and first floor. If the waterproofing layer is not well done, it is easy to appear bubbles, delamination and other phenomena in the late floor paint system.
First, before the construction of waterproof layer, it is necessary to treat the base surface well to ensure that its moisture content is controlled below 4%. If the ground is too wet, it can be blown by blast surface or illuminated by solar lamp. Generally, the drying time of grass-roots requires more than 28 days.
Next, important waterproofing layers need to be constructed. There are two general situations:
1. Laying fine sand and thin film. Laying plastic film on the ground after backfilling. First, a layer of fine sand is laid on the surface of backfill soil, then impermeable felt and plastic film are laid, and finally concrete layer is poured. For the overlap of two plastic films, at least 10CM should be overlapped.
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