Early-strength high-impermeability concrete and preparation method thereof

An early-strength, concrete technology, applied in the field of underwater concrete, can solve the problems of waste of resources, excess slurry, and a large amount of use

Active Publication Date: 2021-09-10
深圳市东大洋水泥制品有限公司
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that the impermeable concrete needs to have excellent fluidity, and the relevant measures will make the slurry of the impermeable concrete surplus, and too much slurry will lead to low strength. Concrete requires the use of a large amount of cementitious materials, resulting in a waste of resources

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Early-strength high-impermeability concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0039] The specific preparation raw materials of TPEG water reducer are: 150g isopentenol polyoxyethylene ether (hydroxyl value 25.5mgKOH / g, unsaturation 0.40mmol / g), 20g methacrylic acid, 13g sodium methacrylate, 18g Ethyl acrylate, 0.2g thioglycolic acid, 1g hydrogen peroxide aqueous solution (30% mass fraction), 0.5g vitamin C, 3g ammonium persulfate, 150g water and 5g sodium hydroxide aqueous solution (30% mass fraction).

[0040] The preparation method of TPEG water reducer is as follows: Pour isopentenol polyoxyethylene ether, hydrogen peroxide aqueous solution and water into a three-necked flask, then mix vitamin C, thioglycolic acid and ammonium persulfate evenly into component A, and put Mix methacrylic acid, sodium methacrylate and ethyl acrylate to form component B, heat the three-necked flask to 30 degrees Celsius and keep the temperature constant, then use a peristaltic pump to simultaneously drop component A and component B into the three-necked flask, two The co...

preparation example 2

[0042] The difference between this preparation example and preparation example 1 is that the specific preparation raw materials of TPEG water reducer are: 170g isopentenol polyoxyethylene ether (hydroxyl value 25.5mgKOH / g, unsaturation 0.40mmol / g), 25g methyl Acrylic acid, 19g sodium methacrylate, 23g ethyl acrylate, 0.7g mercaptoacetic acid, 5g hydrogen peroxide aqueous solution (30% mass fraction), 1.5g vitamin C, 6g ammonium persulfate, 170g water and 7g sodium hydroxide Aqueous solution (mass fraction 30%).

preparation example 3

[0044] The difference between this preparation example and preparation example 1 is: the hydroxyl value of prenol polyoxyethylene ether is 28mgKOH / g, the degree of unsaturation is 0.6mmol / g, the mass concentration of hydrogen peroxide aqueous solution is 25%, sodium hydroxide The mass concentration of the aqueous solution is 20%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
degree of unsaturationaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
lengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to the field of underwater concrete, and particularly discloses early-strength high-impermeability concrete and a preparation method thereof. The early-strength high-impermeability concrete is prepared from water, cement, an admixture, sodium silicate, sand, gravel, caustic alkali, a TPEG water reducing agent, polyacrylamide and polypropylene fibers. The preparation method comprises the following steps: uniformly mixing the TPEG water reducing agent, the polyacrylamide, the sodium silicate, the caustic alkali and the water to obtain the additive, uniformly mixing the cement and the admixture to obtain a rubber material, adding the additive into the rubber material, uniformly stirring to obtain cement paste, uniformly stirring the sand, the gravel and the polypropylene fiber to obtain mixed aggregate, and uniformly stirring the cement paste and the mixed aggregate to obtain the early-strength high-impermeability concrete. The early-strength high-impermeability concrete has the effects of improving the compressive strength of the impermeability concrete and reducing the use amount of a rubber material, and the cost can be saved.

Description

technical field [0001] The application relates to the field of underwater concrete, more specifically, it relates to an early-strength high-impermeability concrete and a preparation method thereof. Background technique [0002] As a common building material, concrete can also be used underwater after adding special admixtures, but the concrete under water needs a higher impermeability level. Underwater concrete has the advantages of high strength and corrosion resistance, and is relatively High impermeability level can reduce the corrosion of water to the steel bars in the concrete, and the durability is good. [0003] Impermeable concrete requires good compactness of the concrete to reduce permeation channels. Therefore, ready-mixed concrete needs to have good workability without bleeding and aggregate sinking. Moreover, the impermeable concrete is constructed under water and is difficult to vibrate. Therefore, the ready-mixed impermeable concrete needs higher fluidity to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B111/27
CPCC04B28/26C04B2111/27C04B2111/00293C04B2201/50C04B7/02C04B18/08C04B22/062C04B24/2652C04B24/124C04B16/0633C04B14/06C04B14/02C04B24/32C04B24/04C04B24/16C04B24/045C04B22/068C04B24/06C04B22/14
Inventor 马伍平
Owner 深圳市东大洋水泥制品有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap