Basic usage of water glass type acid-resistant cement 2012-2-9 13:54:46 Basic usage of water glass type acid-resistant cement
One, In general, when mixing acid-resistant concrete or acid-resistant cement, hardening agent sodium fluosilicate needs to be added and fully mixed uniformly; it is best to sieve twice, then mix with a water glass solution with a specific gravity of 1.38-1.45 and a modulus of 2.60-2.80.
Two, When in use, first place the well-mixed product in a container, then add the water glass solution, stir evenly and quickly; generally, each time less than one hundred kilograms should be stirred uniformly, and the prepared mud must be used within 50 minutes. The tools and containers used must not contain moisture or other impurities. When bonding acid-resistant bricks, staggered joints should be used.
Three, Before construction, metal equipment should be derusted and cleaned, brick structures should be brushed clean, and the surface of alkaline ordinary cement structures should first be neutralized with acid and then washed with water. Then heat and dry, generally requiring moisture content below 4%.
Four, Acid-resistant cement should be hardened at a temperature above 15℃, and maintained in the air for about 10-20 days (in winter, due to low temperature and longer time, use should be avoided as much as possible). During maintenance, avoid contact with water and water components, and avoid direct exposure to sunlight to prevent cracking. Cracks should be repaired in time, otherwise, delamination may occur over time. Mount Tai travel.
Five, After maintenance and drying, acid treatment should be carried out. The basic method is to brush its surface with 40% sulfuric acid every four hours, and remove the crystalline material produced each time.
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