A kind of preparation method of hydrophobic pore plug for composite biografted concrete

Abstract

The invention relates to the technical field of building admixtures, more specifically, to a method for preparing a composite biografted concrete hydrophobic pore plug. After adding alkylene polyoxyethylene ether into hydrogen peroxide and continuously stirring for 5 minutes, the liquid A , B solution and C solution are added dropwise for 2 hours, 2.5 hours and 1.5 hours respectively; the product has a very high degree of purification during the compounding process, and has good anti-corrosion, anti-acid and anti-alkali effects in use. After a certain proportion After being added to concrete, it can well replace traditional hydrophobic compounds, and the synthesis process is relatively simple, which is easy for industrial production.

Description

technical field [0001] The invention relates to the technical field of building admixtures, and more particularly, to a preparation method of a hydrophobic pore plug for composite biografted concrete. Background technique [0002] Concrete hydrophobic compound pore plugs are used in concrete to effectively limit water absorption and permeability even under water pressure. It can treat the capillary phenomenon in concrete from the root of the disease, make the water drain out of the concrete, change the water absorption problem of capillary pores, prevent concrete leakage and chloride ion penetration, and solve the durability problems such as steel corrosion. Most of the lifespan is more than 100 years. The durability of concrete is a key factor in determining the life of concrete components. Preventing concrete cracking and improving the overall impermeability of concrete in the process of concrete mix design has become the key to improving the life of concrete. Most of the...

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Problems solved by technology

It can cure the capillary phenomenon in concrete from the root of the disease, make water drain out of the concrete, change the capillary water absorption problem, prevent concrete leakage and chloride ion penetration, and solve durability problems such as steel bar corrosion. In recent years, many building designs Most of the service life is more than 100 years. The durability of concrete is the key factor determining the service life of concrete components. Preventing concrete cracking and improving the overall impermeability of concrete in the process of concrete mix design has become the key to improving the service life of concrete. Most of the existing concrete hydrophobic compound plugs are composed of inorganic raw materials, which will lead to the inability to perform due to uneven product performance during the product formation process. At the same time, the raw materials are easy to introduce other impurities when compounding, resulting in concrete Performance does not meet design standards

[0003] Traditional hydrophobic compounds are mainly composed of a variety of inorganic components, so it is easy to introduce a variety of inorganic impurities, resulting in products that cannot perform normally and fail to meet their designed performance. In recent years, construction projects have put forward strict requirements on the life of concrete. , especially many existing buildings or bridges are built in complex alkaline and acidic environments, in order to achieve concrete design performance indicators must adopt its advanced chemical synthesis process to research new products to solve existing technical problems

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