Construction method for reducing surface bubbles of aluminum alloy formwork concrete

Abstract

The invention discloses a construction method for reducing surface bubbles of aluminum alloy formwork concrete. The construction method comprises the following steps that Tween20, sodium dodecyl sulfate and water are prepared into a first mixed solution, and simethicone and sorbitan monolaurate are uniformly stirred until the mixed solution is milky white to prepare a second mixed solution; the first mixed solution is slowly added into the second mixed solution, adding is carried out while stirring until the first mixed solution is completely added, then a compound modified additive is added,uniformly stirring and mixing are carried out to obtain a bubble eliminating release agent, the bubble eliminating release agent is directly sprayed on the surface of a formwork, and then concrete ispoured; and the surface tension of foam is changed through the bubble removing release agent, so that small bubbles are gathered into large bubbles, the bubbles are broken to achieve the defoaming effect. The preparation method of the bubble removing release agent is simple, the cost is low, and the problem that the surface bubbles of the aluminum alloy formwork concrete are too many is solved with low cost.

Description

Technical field[0001]The invention relates to the field of building construction, in particular to a construction method for reducing air bubbles on the surface of aluminum alloy formwork concrete.Background technique[0002]Aluminum alloy formwork is called concrete engineering aluminum alloy formwork, which is a new generation formwork system after wood formwork, bamboo, wood plywood, and steel formwork. The aluminum alloy formwork is made of aluminum alloy profiles as the main material, which is made by machining and welding processes and is suitable for concrete engineering. It is composed of panels, ribs, main body profiles, flat formwork, corner formwork, and early removal devices.[0003]At present, many construction units only judge the quality of a release agent based on the degree of ease of release, and often ignore the effect of the release agent on the surface of concrete products. Many manufacturers only use waste engine oil as a release agent. However, the appearance of t...

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Problems solved by technology

[0005] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a kind of construction method that reduces air bubbles on the surface of aluminum alloy formwork concrete: (1) by Tween20, sodium lauryl sulfate, and water are formulated into the first mixed solution , Stir the simethicone and sorbitan monolaurate evenly until the mixed solution is milky white to make the second mixed solution, slowly add the first mixed solution to the second mixed solution, at 40-60°C Stir while adding at low temperature until the first mixed solution is completely added, then add compound modified additives one by one, stir and mix evenly to obtain a release agent for eliminating air bubbles, then spray the release agent for eliminating air bubbles directly on the surface of the formwork, and then pour Concrete solves the problem that the existing release agent makes the concrete surface dark and air bubbles are too many, which affects the aesthetics of the concrete surface; (2) by adding Tween20, sodium lauryl sulfonate, and water to the solution in parts by weight In one of the mixing tanks of the mixing device, add simethicone oil and sorbitan monolaurate into another mixing tank by weight, and the driving motor drives the winding roller to rotate through the driving pulley and the driven pulley , release the rope, and drive the T-shaped splint to slide down on the slide rail through the guide wheel, thereby driving the height of the mounting plate and the first mixing motor to drop, so that the two first mixing blades enter the two mixing tanks respectively In the inner cavity, two sealing covers are respectively covered on the two mixing tanks, and the operation of the two first mixing motors respectively drives the two first stirring blades to rotate, and one of the first stirring blades mixes Tween20, sodium dodecylsulfonate , water and stir evenly to obtain the first mixed solution, another first stirring blade stirs the simethicone and sorbitan monolaurate evenly to obtain the second mixed solution, open the solenoid valve on one of the delivery pipelines, and The second mixed solution is delivered to the inner cavity of the mixing tank, the heating wire in the heating jacket is started to heat the mixing tank, the second mixing motor runs through the reducer to drive the second stirring blade to rotate, and the second mixed solution is heated to 40 After ~60°C, open the solenoid valve on another delivery pipeline, add the first mixed solution into the inner cavity of the mixing tank, stir while adding, until the first mixed solution is completely added, then add the compounded solution from the feeding port in sequence The various components of the modified additive are stirred and mixed evenly to obtain the release agent for eliminating air bubbles, which solves the problem that the existing release agent is difficult to prepare and expensive

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