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Special compacting agent for anti-permeability and anti-cracking concrete

A concrete and compacting agent technology, which is applied in the field of building materials, can solve the problems of inconspicuous mechanical properties and impermeability, and achieve the effects of preventing moisture from entering the product, increasing the contact angle, and improving the impermeability

Inactive Publication Date: 2018-06-22
NOTTING CHANGZHOU PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: aiming at the shortcomings of the traditional compacting agent that the anti-cracking performance, mechanical properties and impermeability of concrete are not significantly improved, a special compacting agent for anti-seepage and anti-cracking concrete is provided.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019]Add sodium alginate and water into the No. 1 beaker at a mass ratio of 1:100, stir and mix with a glass rod for 30 minutes, let it stand for swelling for 4 hours, and then move the No. 1 beaker to a digital speed measuring constant temperature magnetic stirrer at Under the conditions of 95°C and 500r / min, heat and stir to dissolve for 50min, then add 0.5 times the mass of sodium alginate and 5% sodium periodate solution to No. Under the condition of heating / stirring and mixing for 60 minutes, the modified sodium alginate solution is obtained; (N-amidino)dodecylacrylamide and methoxypolyethylene glycol are placed in No. 2 beaker, and add p-dichlorobenzene with 0.2 times the quality of methoxypolyethylene glycol and ferrocene with 0.10 times the quality of methoxypolyethylene glycol in the No. 2 beaker, at a speed of 500r / min , stirred and mixed for 50min to obtain the modified additive; in parts by weight, 40 parts of glyoxal solution with a mass fraction of 50%, 20 parts...

example 2

[0021] Put (N-amidino) dodecyl acrylamide and methoxy polyethylene glycol in the No. 2 beaker at a mass ratio of 2:1, and add 0.2 methoxy polyethylene glycol to the No. 2 beaker times of p-dichlorobenzene and ferrocene of 0.10 times of the quality of methoxypolyethylene glycol, under the condition of 500r / min, stirring and mixing for 50min at a rotating speed to obtain the modification aid; in parts by weight, 40 Parts of glyoxal solution with a mass fraction of 50%, 20 parts of a potassium hydroxide solution with a mass fraction of 30%, and 40 parts of hydroquinone are placed in a four-necked flask, and the four-necked flask is placed in a digital display speed measuring constant temperature magnetic force In the agitator, under the conditions of temperature 78°C and rotation speed 500r / min, after constant temperature stirring and reaction for 4 hours, the temperature in the four-necked flask was lowered to 62°C, and then 0.3 times the volume of glyoxal solution was added to t...

example 3

[0023] Add sodium alginate and water into the No. 1 beaker at a mass ratio of 1:100, stir and mix with a glass rod for 30 minutes, let it stand for swelling for 4 hours, and then move the No. 1 beaker to a digital speed measuring constant temperature magnetic stirrer at Under the conditions of 95°C and 500r / min, heat and stir to dissolve for 50min, then add 0.5 times the mass of sodium alginate and 5% sodium periodate solution to No. Under the condition of heating / stirring and mixing for 60 minutes, the modified sodium alginate solution is obtained; (N-amidino)dodecylacrylamide and methoxypolyethylene glycol are placed in No. 2 beaker, and add p-dichlorobenzene with 0.2 times the quality of methoxypolyethylene glycol and ferrocene with 0.10 times the quality of methoxypolyethylene glycol in the No. 2 beaker, at a speed of 500r / min , stirred and mixed for 50min to obtain the modified additive; in parts by weight, 40 parts of glyoxal solution with a mass fraction of 50%, 20 part...

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Abstract

The invention discloses a special compacting agent for anti-permeability and anti-cracking concrete, and belongs to the technical field of building materials. According to the compacting agent, calcium nitrate solution, chitosan liquid, a modifying addition agent, urea and bacillus pasteurii liquid are stirred and mixed, sodium sulfate solution is added, then stirred and mixed, cooling is conducted, glutaraldehyde solution is dropwisely added, then stirred and mixed, pH is adjusted, and filtering and drying are conducted to obtain modified microcapsules; 20-30 parts of modified sodium alginatesolution, 20-30 parts of calcium bicarbonate solution, 30-40 parts of basic phenolic resin, 20-30 parts of the modified microcapsules, 20-30 parts of gelatin solution, 8-10 parts of phospholipid and8-10 parts of plant essential oil, by weight, are placed in a mixing machine, and stirred and mixed at a speed of 300-500 r / min for 40-60 min to obtain the special compacting agent for the anti-permeability and anti-cracking concrete. The special compacting agent prepared by the above technical scheme has the advantages that the crack resistance, mechanical properties and anti-permeability performance of the concrete are significantly improved.

Description

technical field [0001] The invention discloses a special compacting agent for anti-seepage and anti-cracking concrete, which belongs to the technical field of building materials. Background technique [0002] Today, with the rapid economic development, the scale of cities continues to expand, the problem of land shortage is in sight, and the utilization rate of underground space is getting higher and higher. Large-scale underground basements are one of the representatives, but cracks may occur after large-scale concrete pouring, due to groundwater The role of concrete materials for underground construction needs to solve the problem of concrete impermeability. With the development and utilization of underground space, people pay more and more attention to the self-waterproofing of underground engineering structures. Adding compacting agents to underground large-area concrete projects is an effective measure to improve the impermeability of concrete. The compacting agent is ...

Claims

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Application Information

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IPC IPC(8): C04B24/38
CPCC04B40/0039C04B24/38C04B24/302C04B24/08C04B24/003C04B22/10C04B22/085C04B24/126C04B24/026C04B24/10C04B24/124C04B24/26C04B2103/0001
Inventor 姬娟宁殷连海黄浩
Owner NOTTING CHANGZHOU PRECISION MACHINERY
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