US-12617732-B2 - Concrete protection material, and preparation method and construction method therefor

US12617732B2US 12617732 B2US12617732 B2US 12617732B2US-12617732-B2

Abstract

Disclosed in the present application are a concrete protection material, and a preparation method and a construction method therefor. The concrete protection material consists of 50%-90% of a component A and 10%-50% of a component B in percentage by weight, where the component A is prepared from 30%-65% of organic silicon, 2%-5% of nano-silicon dioxide and the balance of an organic solvent in percentage by weight; and the component B is prepared from 20%-50% of an organic base and the balance of water in percentage by weight. The present application not only can form nano-particles having a strengthening effect in capillary channels of a concrete surface layer, but also can achieve a technical effect of superhydrophobicity on the concrete surface layer.

Inventors

Dongdong Fan
Juan Chen
Chunhong LIN
Xianzhu HU
Zhiwu Yu
Hai Huang
Jianfeng Wen
Jianwei PENG
Zhiyong Wang
Yitao Chen
Chenhao WU
Jianan YAO
Jie Tang

Assignees

NATIONAL ENGINEERING RESEARCH CENTER OF HIGH-SPEED RAILWAY CONSTRUCTION TECHNOLOGY
CHINA RAILWAY NO.4 ENGINEERING GROUP CO., LTD
ANHUI ENGINEERING MATERIAL TECHNOLOGY CO, LTD OF CTCE GROUP

Dates

Publication Date: 20260505
Application Date: 20221121
Priority Date: 20220720

Claims (7)

1 . A concrete protection material, consisting of 50%-90% of a component A and 10%-50% of a component B in percentage by weight, wherein the component A consisting of 30%-65% of organic silicon, 2%-5% of nano-silicon dioxide and the balance of an organic solvent in percentage by weight; and the component B consisting of 20%-50% of an organic base and the balance of water in percentage by weight.
2 . The concrete protection material according to claim 1 , wherein in the component A, the organic silicon is at least one of tetraethyl orthosilicate, methyltriethoxysilane, triethoxyisobutylsilane, triethoxyoctylsilane, and octacyclotetrasiloxane.
3 . The concrete protection material according to claim 1 , wherein in the component A, the organic solvent is at least one of methanol and ethanol.
4 . The concrete protection material according to claim 1 , wherein in the component A, the nano-silicon dioxide is spherical-like nano-particles with a mean diameter of 6 nm-8 nm after being surface-treated with octacyclotetrasiloxane.
5 . The concrete protection material according to claim 1 , wherein in the component B, the organic base is at least one of trimethyl hydroxide (ethyl) ammonium, sodium methylsiliconate, and pyridine.
6 . A preparation method for a concrete protection material according to claim 1 , comprising: S1, weighing organic silicon, an organic solvent and nano-silicon dioxide in percentage by weight, and stirring same uniformly at a normal temperature, to obtain a component A; and S2, weighing an organic base and water in percentage by weight, and stirring same at a normal temperature until dissolved, to obtain a component B.
7 . A construction method for a concrete protection material according to claim 1 , wherein a component A and a component B are mixed and stirred uniformly in percentage by weight, and are brushed or sprayed on a concrete surface.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application is a 371 of international application of PCT application serial no. PCT/CN2022/133233, filed on Nov. 21, 2022, which claims the priority of Chinese Patent Application No. 202210856916.1 filed with the China National Intellectual Property Administration on Jul. 20, 2022, and entitled “Concrete protection material, and preparation method and construction method therefor”, which is incorporated by reference herein in its entirety as part of the present application. TECHNICAL FIELD The present application relates to the technical field of building materials, and particularly relates to a concrete protection material, and a preparation method and a construction method therefor. RELATED ART Statistically, an annual loss of existing concrete projects and their components in China caused by corrosion and deterioration has accounted for about 3.5-5% of the gross national product, and about half of the existing buildings have entered the aging stage. The above problems can be effectively solved by using concrete protection materials for protection of existing concrete buildings. The existing concrete protection materials can be roughly divided into two types: organic and non-organic. Specifically, the organic protection materials mainly include coatings, rolls, etc., and the non-organic protection materials are mainly silicate impermeability reinforcing materials. An organic protective coating is disclosed in the patent “emulsion-type waterproof and mildew-proof organic silicon waterproofing agent” (CN 103787612 A). But after the protective coating is sprayed to a concrete surface, lower molecular weight silicone will gradually evaporate, and higher molecular weight silicone prepolymers cannot permeate into the concrete because of the large molecular weight, and thus gradually lose the protective effect after ultraviolet light irradiation and rainwater washing. A silicate impermeability reinforcing material is disclosed in the patent “all-water-sample inorganic permeable crystalline waterproofing agent and preparation method therefor” (CN 108530105 A). However, silicate materials are less durable, and also likely to cause problems such as concrete saltpetering. SUMMARY OF INVENTION In view of this, the present application provides a concrete protection material, and a preparation method and a construction method therefor, to solve the problems in the background art. Not only nano-particles having a strengthening effect in capillary channels of a concrete surface layer can be formed, but also a technical effect of superhydrophobicity on the concrete surface layer can be achieved. In order to achieve the above objective, the present application provides the following technical solutions. An aspect of the present application discloses a concrete protection material, consisting of 50%-90% of a component A and 10%-50% of a component B in percentage by weight, wherein the component A is prepared from 30%-65% of organic silicon, 2%-5% of nano-silicon dioxide and the balance of an organic solvent in percentage by weight; andthe component B is prepared from 20%-50% of an organic base and the balance of water in percentage by weight. As a further solution of the present application, in the component A, the organic silicon is at least one of tetraethyl orthosilicate, methyltriethoxysilane, triethoxyisobutylsilane, triethoxyoctylsilane, and octacyclotetrasiloxane “D4”. As a further solution of the present application, in the component A, the organic solvent is at least one of methanol and ethanol. As a further solution of the present application, in the component A, the nano-silicon dioxide is spherical-like nano-particles with a mean diameter of 6 nm-8 nm after being surface-treated with octacyclotetrasiloxane “D4”. As a further solution of the present application, in the component B, the organic base is at least one of trimethyl hydroxide (ethyl) ammonium, sodium methylsiliconate, and pyridine. Another aspect of the present application discloses a preparation method for a concrete protection material according to any one described above, and the method includes the following steps: S1, weighing organic silicon, an organic solvent and nano-silicon dioxide in percentage by weight, and stirring same uniformly at a normal temperature, to obtain a component A; andS2, weighing an organic base and water in percentage by weight, and stirring same at a normal temperature until dissolved, to obtain a component B. Yet another aspect of the present application discloses a construction method for a concrete protection material according to any one described above, and the method includes the following steps: mixing and stirring a component A and a component B uniformly in percentage by weight, and brushing or spraying same on a concrete surface. Compared with the prior art, the present application has the following beneficial effects. 1. The organic silicon used in the present