Waterproof and rainproof material and its prepn process
A production method and steel technology, applied in the field of building materials, can solve the problems of high air temperature, scalding, asphalt aging, etc., and achieve the effect of low price
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Embodiment 1
[0019] It is better to use ordinary scrap steel, which is easy to process, and finished steel is also acceptable, but the cost is too high, and it is processed into fine powder by electric grinding wheel, cutting machine or large-scale special pulverizer, and high temperature is generated during the processing, and the Moisture in the steel is detached, absorbed by a magnet (or electromagnet), and then removed and stored in a sealed bag to prevent moisture. You can also add a desiccant, which requires high-purity fine steel powder. The higher the purity, the better the plugging effect; Sodium chloride is dissolved in water to make a sodium chloride aqueous solution with a concentration of more than 20%. It is preferably packed in a plastic bottle for use. A small hole is drilled on the cover, and it will flow out when pinched by hand.
[0020] The construction steps are as follows: Find the cracks on the building surface, take steel powder and sprinkle it evenly in the cracks, ...
Embodiment 2
[0022] If there is water seepage in reservoirs, rivers, dams or small cracks, use more than 90% high-purity steel powder to soak in more than 90% sodium chloride aqueous solution, and put it into seepage places or cracks after 20-40 minutes.
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