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Impermeable concrete and preparation method thereof

A technology of impermeable concrete and mixed solution, which is applied in the field of concrete, and can solve problems such as adverse effects on concrete strength and poor foam stability, and achieve the effects of improved impermeability, low strength, and high impermeability

Active Publication Date: 2020-11-27
BEIJING ZEHUA ROAD & BRIDGE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw material of rosin air-entraining agents is rosin, which is a natural and renewable resource. Poor, a large amount of air-entraining agent needs to be added to achieve good impermeability, but when the amount of air-entraining agent is large, it will adversely affect the strength of concrete

Method used

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  • Impermeable concrete and preparation method thereof
  • Impermeable concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0045] The air-entraining agent of preparation example 1, its each raw material and the amount of each raw material are as shown in table 1, and its preparation step is:

[0046] 1) Add diethanolamine to DMF, stir evenly, then add maleic anhydride with the same molar weight as diethanolamine, and stir for 5 hours at 20°C to obtain a mixed solution A;

[0047] 2) Add triethanolamine to the mixed solution A, then add toluenesulfonic acid and toluene, and stir and react for 8 hours at 110°C to obtain the mixed solution B;

[0048] 3) After heating the rosin to 100°C, stir for 5 hours;

[0049] 4) Add the heat-treated rosin in step 3) into the mixed solution B, and then stir and react for 9 hours at a temperature of 100° C. to obtain the mixed solution C;

[0050] 5) Distill the mixed solution C under reduced pressure to obtain the air-entraining agent used in this application.

[0051] Each reactant and consumption (kg) of the air-entraining agent of table 1 preparation example...

preparation example 2

[0054] The air-entraining agent of preparation example 2, its each raw material and the amount of each raw material are as shown in table 1, and its preparation step is:

[0055] 1) Add diethanolamine to DMF, stir evenly, then add maleic anhydride with the same molar weight as diethanolamine, and stir for 4 hours at 25°C to obtain a mixed solution A;

[0056] 2) Add triethanolamine to the mixed solution A, then add toluenesulfonic acid and toluene, and stir and react for 7 hours at 115°C to obtain the mixed solution B;

[0057] 3) After heating the rosin to 110°C, stir for 5 hours;

[0058]4) Add the heat-treated rosin in step 3) to the mixed solution B, and then stir and react for 8 hours at a temperature of 110° C. to obtain the mixed solution C;

[0059] 5) Distill the mixed solution C under reduced pressure to obtain the air-entraining agent used in this application.

preparation example 3

[0061] The air-entraining agent of preparation example 3, its each raw material and the amount of each raw material are as shown in table 1, and its preparation step is:

[0062] 1) Add diethanolamine to DMF, stir evenly, then add maleic anhydride with the same molar weight as diethanolamine, and stir for 3 hours at 30°C to obtain a mixed solution A;

[0063] 2) Add triethanolamine to the mixed solution A, then add toluenesulfonic acid and toluene, and stir and react for 6 hours at 120°C to obtain the mixed solution B;

[0064] 3) After heating the rosin to 120°C, stir for 4 hours;

[0065] 4) Add the heat-treated rosin in step 3) to the mixed solution B, and then stir and react for 7 hours at a temperature of 120° C. to obtain the mixed solution C;

[0066] 5) Distill the mixed solution C under reduced pressure to obtain the air-entraining agent used in this application.

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Abstract

The invention relates to the technical field of concrete and specifically discloses impermeable concrete. The impermeable concrete is prepared from the following raw materials in parts by weight: 400to 420 parts of Portland cement; 200 to 220 parts of medium-coarse sand, 320 to 340 parts of stones, 100 to 120 parts of fine sand, 100 to 120 parts of steel fibers, 80 to 120 parts of fly ash, 12 to20 parts of an organosilicon waterproofing agent, 2 to 3 parts of an air entraining agent, 1 to 2 parts of a water reducing agent, 80 to 100 parts of nano CaCO3 and 250 to 270 parts of water. The airentraining agent is obtained by carrying out an esterification reaction on hyperbranched polyamide-ester and rosin; the concrete has the advantages of good impermeability and good strength; the invention further provides a preparation method of the impermeable concrete.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to an anti-seepage concrete and a preparation method thereof. Background technique [0002] Concrete refers to the collective name of engineering composite materials that use cementitious materials to cement aggregates into a whole. It refers to the use of cement as cementitious material, sand and stone as aggregates, and water (may A certain proportion of cement concrete obtained by mixing is widely used in civil engineering. [0003] In order to improve the properties of concrete such as impermeability, compressive strength, and poor frost resistance, admixtures can be added. Because the admixture has obvious technical and economic effects, it has increasingly become an indispensable component of concrete. Among them, steel fiber, carbon fiber and polypropylene fiber have been applied to concrete as admixtures, which have greatly improved the strength, impermeability and frost r...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B24/34C08G81/00C04B103/30C04B24/42C04B111/27
CPCC04B28/04C04B24/34C08G81/00C04B2103/304C04B2111/27C04B14/02C04B14/06C04B14/48C04B18/08C04B24/42C04B14/28C04B20/008C04B2103/302
Inventor 李鹏宇
Owner BEIJING ZEHUA ROAD & BRIDGE ENG CO LTD
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