Unlock instant, AI-driven research and patent intelligence for your innovation.

Admixture for improving concrete strength and corrosion resistance and preparation method thereof

A concrete strength and admixture technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of cost increase, prolonging the construction period of structures, etc., and achieve improved service life, good economic benefits, and improved The effect of compression resistance and corrosion resistance

Active Publication Date: 2022-01-25
ZHUZHOU HONGXIN TECH DEV CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such countermeasures such as repair, waterproof construction, and water-stop construction inevitably lead to an increase in cost or an extension of the construction period of the structure, so it is desirable to omit as much as possible.

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
  • Admixture for improving concrete strength and corrosion resistance and preparation method thereof
  • Admixture for improving concrete strength and corrosion resistance and preparation method thereof
  • Admixture for improving concrete strength and corrosion resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An admixture for improving concrete strength and corrosion resistance, the preparation steps of which are:

[0016] (1) configure the aqueous solution of calcium lignosulfonate, in the aqueous solution of described calcium lignosulfonate, the concentration of calcium lignosulfonate is 50g / L, all the other are water; Add acrylic acid, N-methylpyrrolidone, and acryloyl chloride to the solution in turn to form a mixed solution. The mass ratio of acrylic acid, N-methylpyrrolidone, and acryloyl chloride to calcium lignosulfonate in the solution is acrylic acid:N-methylpyrrolidone : acryloyl chloride: calcium lignosulfonate=5g: 3g: 8g: 10g, continue to stir the mixed solution at a speed of 80r / min for 10h after the feeding is completed, after the stirring is completed, the mixed solution is air-cooled to normal temperature, filtered, and ethanol is added in the filtrate, The mass of ethanol added was 10 times the mass of the filtrate, precipitated, solid-liquid separated, was...

Embodiment 2

[0021] An admixture for improving concrete strength and corrosion resistance, the preparation steps of which are:

[0022] (1) configure the aqueous solution of calcium lignosulfonate, in the aqueous solution of described calcium lignosulfonate, the concentration of calcium lignosulfonate is 54g / L, all the other are water; Add acrylic acid, N-methylpyrrolidone, and acryloyl chloride to the solution in turn to form a mixed solution. The mass ratio of acrylic acid, N-methylpyrrolidone, and acryloyl chloride to calcium lignosulfonate in the solution is acrylic acid:N-methylpyrrolidone : acryloyl chloride: calcium lignosulfonate=6g: 4g: 9g: 10g, continue to stir the mixed solution at a speed of 80r / min for 10h after the feeding is completed, after the stirring is completed, the mixed solution is air-cooled to normal temperature, filtered, and ethanol is added in the filtrate, The mass of ethanol added was 10 times the mass of the filtrate, precipitated, solid-liquid separated, was...

Embodiment 3

[0027] An admixture for improving concrete strength and corrosion resistance, the preparation steps of which are:

[0028](1) configure the aqueous solution of calcium lignosulfonate, in the aqueous solution of described calcium lignosulfonate, the concentration of calcium lignosulfonate is 57g / L, all the other are water; Add acrylic acid, N-methylpyrrolidone, and acryloyl chloride to the solution in turn to form a mixed solution. The mass ratio of acrylic acid, N-methylpyrrolidone, and acryloyl chloride to calcium lignosulfonate in the solution is acrylic acid:N-methylpyrrolidone : acryloyl chloride: calcium lignosulfonate=7g: 5g: 9g: 10g, continue to stir the mixed solution at a speed of 80r / min for 10h after the feeding is completed, after the stirring is completed, the mixed solution is air-cooled to normal temperature, filtered, and ethanol is added in the filtrate, The mass of ethanol added was 10 times the mass of the filtrate, precipitated, solid-liquid separated, wash...

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
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses an admixture for improving concrete strength and corrosion resistance. (1) configure an aqueous solution of calcium lignosulfonate, heat it in a water bath, add acrylic acid, N-methylpyrrolidone, and acryloyl chloride, stir, cool, and filter. Add ethanol to the filtrate, precipitate, separate solid and liquid, wash, dry, and obtain solid phase A; (2) configure the aqueous solution of sodium hydroxide, sodium citrate, and sodium sulfamate, add solid phase A, stir, and then add dodecylbenzenesulfonic acid and hydrogen peroxide to obtain component 1; (3) sieve and mix aluminum silicate powder and silicon powder; soak the mixed powder in a mixed aqueous solution of sulfuric acid and maleic acid, keep warm in a water bath, filter, Washing and drying to obtain component 2; (4) mixing component 1 and component 2 with air-entraining agent, ferrous salt, slag powder and coal ash to obtain an admixture. Adding the admixture prepared by the invention into concrete can remarkably improve the compressive performance and corrosion resistance of the concrete, thus prolonging the service life of the concrete.

Description

technical field [0001] The invention relates to the technical field of building material processing, in particular to an admixture for improving concrete strength and corrosion resistance and a preparation method thereof. Background technique [0002] Concrete used to construct structures contains cement, water, aggregates, etc., and has the property of curing through hydration reactions. The cured concrete tends to be prone to cracks due to volume changes due to stress, temperature changes, drying, and the like. When such cracks occur, water is likely to penetrate through the concrete, causing water leakage and the like, and furthermore, the durability of the structure is reduced, and the appearance is deteriorated. In addition, for example, even in the case of an underground structure, cracks cause a problem of water leakage. In this case, since repairing the cracks is difficult, the cost becomes high. In the past, fillers were injected to repair cracks, or concrete was ...

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 Patents(China)
IPC IPC(8): C04B24/20C04B20/02C04B14/04C04B18/14
CPCC04B40/0046C04B20/023C04B2103/61C04B2103/60C04B24/18C04B22/062C04B24/06C04B22/14C04B24/20C04B22/068C04B24/16C04B22/149C04B18/141C04B18/10C04B14/041C04B18/146Y02W30/91
Inventor 王伟龙威
Owner ZHUZHOU HONGXIN TECH DEV CO LTD