Concrete waterproof liquid

Abstract

The invention discloses concrete waterproof liquid, consisting of the following components in percentage by weight: 25 to 35 percent of sodium silicate, 10 to 20 percent of polycarbonate activated silica, 5 to 15 percent of sodium beta-naphthalene sulfonate formaldehyde polycondensate, 5 to 15 percent of water, 10 to 20 percent of stearic acid, 5 to 15 percent of titanium dioxide, 4 to 6 percent of sodium bicarbonate and 4 to 6 percent of mica. The concrete waterproof liquid is permeated into concrete through capillary pores of the concrete and reacts with calcium hydroxide in the concrete to form insoluble silica gel or tiny hydrate crystal which is filled into the capillary pores, so by the reaction, the calcium hydroxide content of the concrete is reduced, the silicate hydrate content is increased, the capillary pores are filled, the capillary porosity is reduced, the anti-permeability of the concrete is improved, the strength, the hardness and the density of the concrete are enhanced, erosion of harmful mediums to the concrete is effectively avoided, and the service life of concrete structures is prolonged.

Description

technical field [0001] The invention relates to an anti-seepage waterproof material, especially a concrete waterproof liquid. Background technique [0002] In 1942, German chemist Lawrence Jackson used Portland cement, quartz sand and a chemical compound with active genes to prepare a slurry that could be painted or sprayed in the practice of solving the leakage of cement ships. Czpillary / Crystalline Waterproofing Materials referred to as CCCW. It not only forms an effective waterproof coating, but also the chemical compound contained in the original slurry penetrates into the concrete and reacts chemically with Ca(OH)2 in the concrete to form a waterproof layer. The material has been promoted and applied in Germany, Canada, Singapore, the United Kingdom, France, Japan and other countries. In the early 1990s, the product entered the Chinese market and has been widely used in Beijing, Shanghai, Guangzhou, Chongqing and other places. At present, the cement-based osmotic crys...

AI Technical Summary

Problems solved by technology

At present, many domestic manufacturers have produced this waterproof material, but due to the high solid content of the existing technology, insufficient penetration depth, film formation of the coating, and poor weather resistance, the effect in practical application of construction projects is not satisfactory. Shanghai Metro Line 2 4 of the 11 stations used the "permeable crystalline waterproof material" to evaluate the final waterproof effect, but leakage still occurred, and the coating peeled and peeled off after being wet, which could not maintain the long-term waterproof effect