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Anti-freezing agent for concrete

A technology of antifreeze and concrete, which is applied in the field of concrete antifreeze, which can solve the problems of antifreeze corrosion, low compressive strength, poor freeze-thaw resistance, etc., and achieve the effect of slowing down corrosion damage, less surface defects, and good rigidity

Inactive Publication Date: 2018-10-26
王敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a concrete antifreeze in view of the problems that the current traditional antifreeze is prone to rust and has poor freeze-thaw resistance, especially under negative temperature curing, and the compressive strength is too low

Method used

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  • Anti-freezing agent for concrete

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preparation example Construction

[0024] The preparation method of anti-cracking resist comprises the steps:

[0025] (1) Take lanthanum oxide and add hydrochloric acid with a mass fraction of 20% according to the mass ratio of 1:8, stir and mix for 20~30min, filter, take the filter residue and dry to obtain the dried product, take β-cyclodextrin and maleic anhydride according to the mass ratio 1:8~10:80~90, add tetrahydrofuran, stir and mix at 70~75°C for 7~8h, cool to room temperature, and get the cooling product, take the cooling product and add chloroform according to the mass ratio of 3:5, and let it stand for 1~2h , take the precipitate, wash it with acetone, suction filter, take the suction filter residue, grind and pulverize, pass through a 100-mesh sieve, and collect the sieved particles;

[0026] (2) Take the sieved particles and add dry matter and distilled water according to the mass ratio of 1:7~11:100~120, stir and mix at 30~50°C for 1~2h, then add triethylamine which is 3~5 times the amount of d...

Embodiment 1

[0034] Compatibilizer: maleic anhydride grafted ethylene-1-octene copolymer, purchased from Shanghai Rizhisheng New Technology Development Co., Ltd., with a grafting rate of 0.8%.

[0035] Boron mud: taken from Liaoyang City, Liaoning Province, mainly containing phosphorus magnesium ore, forsterite ore, hematite, dolomite, magnesium sulfate, magnesium borate, and lizardite.

[0036] Steel fiber: purchased from Laiwu Antai Engineering Materials Co., Ltd., tensile strength ≥ 800MPa, elastic modulus > 190GPa.

[0037] Corrosion inhibitor: mix sodium gluconate, zinc dihydrogen phosphate and thiourea in a mass ratio of 4:1:4.

[0038] The preparation method of anti-cracking resist comprises the steps:

[0039] (1) Take lanthanum oxide and add hydrochloric acid with a mass fraction of 20% according to the mass ratio of 1:8, stir and mix for 20 minutes, filter, take the filter residue and dry to obtain a dry product, take β-cyclodextrin and maleic anhydride according to the mass rat...

Embodiment 2

[0048] Compatibilizer: maleic anhydride grafted ethylene-1-octene copolymer, purchased from Shanghai Rizhisheng New Technology Development Co., Ltd., with a grafting rate of 0.8%.

[0049] Boron mud: taken from Liaoyang City, Liaoning Province, mainly containing phosphorus magnesium ore, forsterite ore, hematite, dolomite, magnesium sulfate, magnesium borate, and lizardite.

[0050] Steel fiber: purchased from Laiwu Antai Engineering Materials Co., Ltd., tensile strength ≥ 800MPa, elastic modulus > 190GPa.

[0051] Corrosion inhibitor: mix sodium gluconate, zinc dihydrogen phosphate and thiourea in a mass ratio of 4:1:4.

[0052] The preparation method of anti-cracking resist comprises the steps:

[0053] (1) Take lanthanum oxide and add hydrochloric acid with a mass fraction of 20% according to the mass ratio of 1:8, stir and mix for 30 minutes, filter, and take the filter residue to dry to obtain a dried product. Take β-cyclodextrin and maleic anhydride according to the mas...

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Abstract

The invention discloses an anti-freezing agent for concrete and belongs to the field of chemical engineering. The anti-freezing agent for the concrete is prepared by mixing 40-60 parts of anti-fracture corrosion resisting agent, 70-90 parts of anti-freezing activator, 50-60 parts of porous doped materials, 20-30 parts of corrosion-inhibition protective agent and 20-30 parts of steel fibers by mass. The anti-freezing agent solves the problems that current traditional anti-freezing agents are likely to cause corrosion, the resistance to freezing and thawing is poor, and particularly under negative-temperature maintenance, the compressive strength is too low.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a concrete antifreeze agent. Background technique [0002] Concrete usually uses cement as the cementitious material, sand and stone as aggregates, mixed with water (may contain admixtures and admixtures) in a certain proportion, and the cement concrete obtained by mixing is also called ordinary concrete. The advantages of forming, low energy consumption, good durability, low price, and combining with steel to make various load-bearing mechanisms are the most widely used building materials in contemporary times and play a very important role in the development of human society. my country has a vast territory. In the middle and lower reaches of the Yangtze River, Northeast China, North China, Inner Mongolia, Qinghai, Xinjiang and other places, the winter temperature is below -5°C, and the extreme minimum temperature is even close to -40°C. When the temperature drops ...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B103/60
CPCC04B40/0039C04B2103/601C04B14/48C04B24/10C04B24/16C04B22/16C04B18/101C04B18/04C04B24/2611C04B22/10C04B24/2688C04B24/045C04B24/383C04B24/24C04B24/28
Inventor 王敏庄文琴刘红妹
Owner 王敏
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