Preparation method of hydrophobic pore suppository for composite biological grafted concrete

Abstract

The invention relates to the technical field of building admixtures, in particular to a preparation method of a hydrophobic pore suppository for composite biological grafted concrete. The preparationmethod comprises the following steps: adding hydrogen peroxide into alkylene alkenyl polyoxyethylene ether, continuously stirring for 5 minutes, and dropwise adding a solution A, a solution B and a solution C for 2 hours, 2.5 hours and 1.5 hours respectively. The product is very high in purification degree in the compounding process, has very good corrosion resistance, acid resistance and alkali resistance in use, can well replace a traditional hydrophobic compound after being added into concrete according to a certain proportion, and is relatively simple in synthesis process and easy for industrial production.

Description

technical field [0001] The invention relates to the technical field of building admixtures, and more specifically, relates to a method for preparing a composite hydrophobic pore plug for biological grafted concrete. Background technique [0002] Concrete hydrophobic compound pore plugs are used in concrete to effectively limit the water absorption rate and permeability even under the condition of water pressure. 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 ...

AI Technical Summary

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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