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

A kind of concrete anti-crack reinforcement additive and preparation method thereof

An additive and concrete technology, which is applied in the field of construction, can solve problems such as easy cracks, high brittleness, and impact, and achieve high tensile strength and compressive strength, good crack resistance and impermeability, and is conducive to industrial production.

Active Publication Date: 2020-11-24
广东龙腾建材科技有限公司 +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of its own structure, concrete materials often leak during use, especially for those underground and underwater structural projects, which seriously affects and restricts the application of concrete materials.
At the same time, concrete has low flexural strength and high brittleness, and is prone to cracks or even breaks during use, which seriously affects the service life and safety of buildings.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A concrete anti-cracking reinforcing additive, comprising the following raw materials in parts by weight: 16 parts of chitosan, 15 parts of sodium 4-cumenesulfonate, 12 parts of 2-mercaptobenzothiazole, and methyl dihydrojasmonate 6 parts, 11 parts of p-nitrosoxylene and 7 parts of isooctyl acetate.

[0026] A method for preparing concrete anti-cracking reinforcing additives, the specific steps are: (1) adding p-nitrosoxylene, chitosan and methyl dihydrojasmonate into a reaction kettle, and adding 20 parts of 85% Ethanol solution, protected by nitrogen, placed at -70°C and stirred for 2 hours; (2) Mix 2-mercaptobenzothiazole and isooctyl acetate, add 75% ethanol solution of 2 times the weight of the mixture, and mix well; Liquid one; (3) Add the mixed liquid dropwise to the reaction kettle of step (1), the dropping rate is 100 drops / min; (4) The reaction kettle is heated to -5°C, and sodium 4-cumenesulfonate is added, Stir the reaction for 1 hour; (5) continue to heat up ...

Embodiment 2

[0028] A concrete anti-cracking reinforcement additive, comprising the following raw materials in parts by weight: 32 parts of chitosan, 22 parts of sodium 4-cumenesulfonate, 19 parts of 2-mercaptobenzothiazole, methyl dihydrojasmonate 17 parts, 17 parts p-nitrosoxylene amine, 15 parts isooctyl acetate.

[0029] A method for preparing concrete anti-cracking reinforcing additives, the specific steps are: (1) adding p-nitrosoxylene, chitosan and methyl dihydrojasmonate into a reaction kettle, and adding 35 parts of 85% Ethanol solution, protected by nitrogen, placed at -70℃ and stirred for 3h; (2) Mix 2-mercaptobenzothiazole and isooctyl acetate, add 4 times the weight of the 75% ethanol solution to the mixture, and mix well; Liquid one; (3) Add the mixed liquid one drop to the reaction kettle of step (1), the dropping rate is 200 drops / min; (4) The reaction kettle is heated to -5°C, and sodium 4-cumenesulfonate is added, Stir and react for 3h; (5) continue to heat the resultant f...

Embodiment 3

[0031] A concrete anti-cracking reinforcing additive, comprising the following raw materials in parts by weight: 25 parts of chitosan, 17 parts of sodium 4-cumenesulfonate, 15 parts of 2-mercaptobenzothiazole, and methyl dihydrojasmonate 11 parts, 13 parts p-nitrosoxylene, 11 parts isooctyl acetate.

[0032] A method for preparing a concrete anti-cracking reinforcing additive. The specific steps are as follows: (1) Add p-nitrosoxylene, chitosan and methyl dihydrojasmonate to a reaction kettle, and add 25 parts of 85% Ethanol solution, protected by nitrogen, placed at -70°C and stirred for 2.5h. (2) Mixing 2-mercaptobenzothiazole and isooctyl acetate, adding a 75% ethanol solution of 2.4 times the weight of the mixture, and mixing uniformly; a mixed solution one is obtained. (3) Add the mixed liquid to the reaction kettle of step (1) one drop at a rate of 150 drops / min. (4) The reaction kettle was heated to -5°C, sodium 4-cumenesulfonate was added, and the reaction was stirred f...

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

No PUM Login to View More

Abstract

The invention discloses a concrete crack resistance reinforcing additive and a preparation method thereof. The concrete crack resistance reinforcing additive is prepared from the following raw materials in parts by weight: 16-32 parts of chitosan, 15-22 parts of sodium 4-propan-2-ylbenzenesulfonate, 12-19 parts of 2-mercaptobenzothiazole, 6-17 parts of methyl dihydrojasmonate, 11-17 parts of N,N-Dimethyl-4-nitrosoaniline and 7-15 parts of isooctyl acetate. The concrete crack resistance reinforcing additive has the advantages that an unexpected synergistic effect is achieved through compoundingof the raw materials, the crack resistance and the impermeability are good, the waterproof protection period is long, the bending strength, the tensile strength and the compressive strength are high,and therefore the application range is widened, and the popularization value is high. The preparation method has the advantages that a preparation process is easy to realize, and industrial production is facilitated.

Description

Technical field [0001] The invention relates to the field of construction, in particular to a concrete anti-cracking reinforcement additive and a preparation method thereof. Background technique [0002] Concrete, referred to as "concrete" for short, usually refers to the use of cement as a cementitious material, sand and stone as aggregates, mixed with water in a certain proportion, and mixed. Concrete has the characteristics of abundant raw materials, low price and simple production process, which makes it widely used. It is not only used in various civil engineering, but also in shipbuilding, machinery industry, marine development, geothermal engineering, etc., concrete is also an important material . However, due to its structural characteristics, concrete materials often leak during use, especially for those underground and underwater structural projects, which seriously affects and restricts the application of concrete materials. At the same time, concrete has low flexura...

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): C04B24/38
CPCC04B40/0039C04B24/38C04B24/20C04B24/16C04B24/045
Inventor 周冲爱
Owner 广东龙腾建材科技有限公司