Underground building superstrong deep penetration crystallization type waterproof material

Abstract

The invention discloses an underground building superstrong deep penetration crystallization type waterproof material, and belongs to the technical field of waterproof materials. The waterproof material comprises the following components in percent by weight: 42% of portland cement, 1% of a methylnaphthalene-sodium sulfonate condensation product, 7% of a siloxane, 6% of calcium hydrate, 10% of bentonite, 28% of quartz sand and 6% of aluminium potassium sulfate dodecahydrate. The preparation method of the waterproof material comprises: adding bentonite into an siloxane emulsion, stirring uniformly and drying the slurry; grinding into powder with a particle size of 150-250 meshes by a bowl mill; adding the surface active dispersant methylnaphthalene-sodium sulfonate condensation product and quartz sand, stirring to form granules; and finally adding portland cement, sodium silicate, aluminium potassium sulfate dodecahydrate and calcium hydrate to prepare the finished product. The waterproof material provided by the invention is capable of keeping the respiratory action of a building, cracks and holes of concrete are filled with and blocked off by generated unique acicular crystal, water is prevented from penetrating, and the waterproof material is durable in waterproof effect and free of toxicity and pollution.

Description

[Technical Field] [0001] The invention relates to an underground building waterproof material, in particular to an underground building super deep penetration crystalline waterproof material. [Background technique] [0002] In recent years, my country's subway industry has developed rapidly. So far, more than 40 cities across the country have set off a boom in subway construction. The construction of the subway mainly adopts the shield method. Therefore, more and more shield tunneling machines are used in the subway construction of various cities, which requires a large amount of shield tail sealing grease for the waterproof lubrication treatment of the shield tunneling machine. [0003] The concrete structure is brittle and has a high shrinkage rate, and cracks and voids will inevitably occur in engineering applications. Such cracks and voids cause the water tightness of the concrete structure to decrease, leakage, and the reduction of load-bearing capacity affect the service lif...

AI Technical Summary

Problems solved by technology

[0005] In construction engineering, many buildings have waterproof and anti-seepage requirements. However, the anti-seepage and waterproof performance of ordinary concrete cement is poor, and water can penetrate through the micropores of concrete cement. Therefore, in general construction, the facing surface of ordinary concrete or Waterproof membranes, coatings and other materials are used on the back surface to isolate the water source. This construction process is more complicated, and the waterproof effect cannot be guaranteed; there is also a rigid inner waterproof structure, but its crack resistance is poor, and all voids and holes in the porous structure cannot be completely eliminated. For the healing of cracks, the waterproof effect is not good and the waterproof cost is high; there are also cement-based permeable crystalline waterproof coatings, which can not only ensure waterproof performance, but also reduce waterproof costs. However, most of them are mixed with water in use. Painted on the surface of concrete, it is difficult to fill the existing cracks on the concrete surface

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