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A kind of concrete inner surface hydrophobic treatment agent and preparation method thereof

A technology for hydrophobic treatment and concrete interior, which is applied in the field of concrete inner surface hydrophobic treatment agent and its preparation, which can solve the problems of high cost and insufficient durability, and achieve the effects of high production cost, high labor intensity and pollution reduction

Active Publication Date: 2022-06-21
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the deficiencies of the existing concrete internal hydrophobic preparation methods, especially the problems of high cost and insufficient durability, the present invention proposes a concrete internal surface hydrophobic treatment agent and its preparation method

Method used

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  • A kind of concrete inner surface hydrophobic treatment agent and preparation method thereof
  • A kind of concrete inner surface hydrophobic treatment agent and preparation method thereof
  • A kind of concrete inner surface hydrophobic treatment agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1) Use isoprenol polyoxyethylene ether (TPEG) with a molecular weight of 2400, according to TPEG: hydroxyethyl acrylate: hydrogen peroxide (concentration 27.5%): vitamin C: thioglycolic acid: water = 350: 80: 3: 0.3: 0.4 : 425 mass ratio to synthesize coating liquid;

[0052] The synthesis steps are:

[0053] First, add 350 parts of prenol polyoxyethylene ether and 300 parts of deionized water into the three-necked flask, and stir at room temperature for 20 minutes to ensure that the prenol polyoxyethylene ether is completely dissolved;

[0054] Add 3 parts of hydrogen peroxide (concentration 27.5%) and stir for 5 minutes;

[0055] Prepare solution A and solution B. Among them, liquid A: 0.4 part of thioglycolic acid, 0.3 part of vitamin C, 85 parts of deionized water. Liquid B: 80 parts of hydroxyethyl acrylate, 40 parts of deionized water;

[0056] Both liquid A and liquid B were added dropwise into the three-necked flask, wherein A was added dropwise for 3 hours,...

Embodiment 2

[0078] 1) Using isoprenol polyoxyethylene ether (TPEG) with a molecular weight of 3000, according to TPEG: hydroxybutyl acrylate: ammonium persulfate: ferrous sulfate heptahydrate: mercaptopropionic acid: water = 330: 100: 2: 0.2: 0.3:435 mass ratio to synthesize the coating liquid;

[0079] The synthesis steps are,

[0080] First, add 330 parts of prenol polyoxyethylene ether and 310 parts of deionized water into the three-necked flask, and stir at room temperature for 20 minutes to ensure that the prenol polyoxyethylene ether is completely dissolved; add 2 parts of ammonium persulfate, stir for 5 minute;

[0081] Prepare solution A and solution B. Among them, liquid A: 0.3 parts of thioglycolic acid, 0.2 parts of ferrous sulfate, 85 parts of deionized water. Liquid B: 100 parts of hydroxybutyl acrylate, 40 parts of deionized water;

[0082] Both liquid A and liquid B were added dropwise into the three-necked flask, wherein A was added dropwise for 3 hours, and B was adde...

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Abstract

The invention relates to a hydrophobic treatment agent for the inner surface of concrete and a preparation method thereof, in particular to a technology for coating hydrophobic shell-based powder with a water-soluble polymer substance. The coated hydrophobic shell-based powder is added to the concrete, and then mixed evenly. The method of the invention can form a hydrophobic surface inside the concrete to prevent the intrusion of external erosive ions, thereby improving the durability of the concrete, and the final commercialized form of the invention is a powder, which is convenient for storage, transportation and use.

Description

technical field [0001] The invention relates to a hydrophobic treatment agent for the inner surface of concrete and a preparation method thereof, in particular to a method for encapsulating hydrophobic shell-based powder with a water-soluble polymer substance to achieve hydrophobicity of the inner surface of concrete. Background technique [0002] With the rapid development of coastal cities, coastal engineering has also developed rapidly. However, in the special marine environment, concrete is easily corroded by chloride ions and sulfate ions in seawater, which greatly reduces its durability and life, and significantly increases maintenance costs. Among them, chloride ions will cause serious corrosion of steel bars, and sulfate ions will cause concrete to be corroded by gypsum-type, ettringite or tobermorite-type sulfates, which will cause concrete expansion and cracking, and even greatly reduce the service period. Therefore, in the marine environment, the intrusion of chl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42C08F283/06C08F220/20C04B103/65
CPCC04B40/0046C08F283/065C04B2103/65C08F220/20C04B24/2647C04B14/28C04B24/42
Inventor 宋远明周正王志娟
Owner YANTAI UNIV
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