Method and device for introducing concrete deep sealant into inner layer of concrete structure

Abstract

The invention provides a method and device for introducing a concrete deep sealant into an inner layer of a concrete structure by utilizing a pulse electrochemical permeation principle. A pulse electrochemical permeation device is a movable control system and comprises a low-tension pulse current generation device, a positive electrode (titanium metal sheet), a negative electrode (copper metal bar) and an intelligent monitoring device, wherein the low-tension pulse current generation device is respectively connected with the positive electrode and the negative electrode; and the positive electrode and the negative electrode are also both connected with the intelligent monitoring device. In the control device, the active nanometer SiO2 contained in a concrete deep sealant solution is introduced into the deep layer of the concrete structure, the active nanometer SiO2 generates chemical reaction with an alkali component Ca(OH)2 contained in concrete to generate inorganic silicon crystals to fill pores, cracks and capillary channels of the concrete structure and permanently become a part of the concrete so that the concrete is compact and achieves ventilation without water permeation, and the active nanometer SiO2 strengthens the concrete structure and also inhibits the generation of contraction cracks of the concrete. Thus the invention solves the problems of fundamental factors influencing the durability of the concrete, finally achieves the improvement of the microstructure and the property of formed concrete and effectively prolongs the durability of the concrete.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a method and a device for introducing a concrete deep sealant into the inner layer of a concrete structure by utilizing the principle of pulse electrochemical infiltration. Background technique [0002] In concrete structures, external water or corrosive solutions use their own gravity or capillary action (siphon) to form pressure, and enter the structure through pores, cracks and capillary channels, resulting in corrosion, moisture or leakage of the concrete structure, seriously affecting The normal use of building structures; in addition, the existence of alkali and porosity in the deep structure of cured concrete is the key factor for the decline of concrete durability, and it is also a worldwide problem that must be solved to improve the durability of concrete. Contents of the invention [0003] The invention provides a method and device for introducing concrete deep s...

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Problems solved by technology

[0002] In concrete structures, external water or corrosive solutions use their own gravity or capillary action (siphon) to form pressure, and enter the structure through pores, cracks and capillary channels, resulting in corrosion, moisture or leakage of the concrete structure, seriously affecting The normal use of building structures; in addition, the existence of alkali and porosity in the deep structure of cured concrete is the key factor for the decline in the durability of concrete, and it is also a worldwide problem that must be solved to improve the durability of concrete

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