CN103613330A - Harmless anti-freezing concrete and preparation method thereof - Google Patents

Abstract

The present invention discloses a harmless anti-freezing concrete and a preparation method thereof. The harmless anti-freezing concrete is prepared from the following raw materials, by weight: 20-25 parts of cement, 20-45 parts of rubber particles, 10-20 parts of water, 10-20 parts of fine stone, 1-2 parts of polymer fibers, 4-6 parts of anhydrite, and 15-20 parts of an anti-freezing agent. With the scheme, no harm on buildings and human body can be generated, and the anti-freezing index achieves the daily used industry standard.

Description

A kind of harmless type frost-resistant concrete and preparation method thereof

Technical field

The present invention relates to building material technical field, particularly a kind of harmless type frost-resistant concrete and preparation method thereof.

Background technology

In building operation, often can run into various atrocious weather environment, especially in the winter time, long-term low temperature has caused very large impact to concrete stirring, how just can prevent that concrete from freezing is at low temperatures the relatively problem of headache of engineering staff always.

In existing frostproofer, take early strong component, antifreeze component and induced gas component as main, wherein comprised a large amount of methyl alcohol, nitrite, villaumite and ammoniacal liquor etc., methyl alcohol is volatile and toxic, and villaumite can cause corrosion to reinforcing bar, the life-span of impact building; Ammoniacal liquor is a kind of toxic substance with irritating smell especially, and volatile, and in concrete, adding these materials will have a strong impact on the quality of life, human body is caused to murder by poisoning, and nitrite can make concrete alkalinity suddenly increase, even occur that the accumulation of salt in the surface soil is present, had a strong impact on construction quality.

 

Summary of the invention

Defect for existing in above-mentioned prior art, the present invention seeks to: propose a kind ofly can either effectively resist low temperature environment, can effectively avoid again building and human body to cause the harmless type frost-resistant concrete of infringement, to meet people's demand.

The technical solution adopted for the present invention to solve the technical problems is:

A harmless type frost-resistant concrete, is formed by weight ratio by following raw material:

Cement 20-25 part;

Rubber grain 20-45 part;

Water 10-20 part;

Microlith 10-20 part;

Polymer fiber 1-2 part;

Anhydrite 4-6 part;

Frostproofer 15-20 part.

Preferably, described polymer fiber adopts 2 parts.

Preferably, described polymer fiber is mixed by polyvinyl alcohol fiber and polypropylene fibre.

Preferably, the weight part proportioning of described polyvinyl alcohol fiber and described polypropylene fibre is 7:3.

Preferably, described anhydrite adopts 6 parts.

Preferably, described frostproofer is mixed and is formed by high performance water reducing agent of polyocarboxy acid, polyoxyethylene nonylphenol ether, Lithium Sulphate and water.

Preferably, the weight part proportioning of described high performance water reducing agent of polyocarboxy acid, polyoxyethylene nonylphenol ether, Lithium Sulphate and water is 25:5:10:60.

A preparation method for harmless type frost-resistant concrete, comprises the steps:

Step (1): take following raw material mix and blend by weight ratio:

Cement 20-25 part;

Rubber grain 20-45 part;

Water 10-20 part;

Microlith 10-20 part;

Anhydrite 4-6 part;

Step (2): take the polyvinyl alcohol fiber of 7 parts and the polypropylene fibre of 3 parts and mix rear stirring 40 minutes, make polymer fiber;

Step (3): the polymer fiber that adds 2 parts of steps (2) to make in the mixture making in step (1), stirs 1 hour;

Step (4): the 25:5:10:60 that is by weight ratio of high performance water reducing agent of polyocarboxy acid, polyoxyethylene nonylphenol ether, Lithium Sulphate and water is mixed, after stirring, place 15min and make frostproofer;

Step (5): by the frostproofer making in step (4), be added in the middle gained mixture of step (3), then stir 2-3 hour, can use.

The invention has the beneficial effects as follows: the polyoxyethylene nonylphenol ether adopting in the frostproofer component in this programme can produce a large amount of small bubbles before concrete freezes, moisture content in concrete can be pressed in bubble, thereby reduce the impact of moisture on concrete structure, can not cause because temperature reduces the moisture in concrete to freeze, and, the concrete that this programme makes is nontoxic, harmless, alkali-free, without chlorine, more without ammonia, discharge, not only extend the life-span of buildings but also be more of value to the healthy of people, the antifreezing effect of most important this programme is remarkable, can under subzero temperature, keep the curing strength standard of 7 days, under normal temps, keep the maintenance criteria of 28 days.

Embodiment

What below show is one of preferred embodiment of the present invention, for enforcement personnel as a reference.

Embodiment 1: a kind of harmless type frost-resistant concrete, is formed by weight ratio by following raw material:

25 parts of cement;

20 parts of rubber grains;

20 parts, water

15 parts of microliths;

2 parts of polymer fibers;

6 parts of anhydrite;

12 parts of frostproofers.

Preferably, described polymer fiber is mixed by polyvinyl alcohol fiber and polypropylene fibre.

Preferably, the weight part proportioning of described polyvinyl alcohol fiber and described polypropylene fibre is 7:3.

Preferably, described frostproofer is mixed and is formed by high performance water reducing agent of polyocarboxy acid, polyoxyethylene nonylphenol ether, Lithium Sulphate and water.

Preferably, the weight part proportioning of described high performance water reducing agent of polyocarboxy acid, polyoxyethylene nonylphenol ether, Lithium Sulphate and water is 25:5:10:60.

The preparation method of this product is as follows:

Step (1): take following raw material mix and blend by weight ratio:

25 parts of cement;

20 parts of rubber grains;

20 parts, water

15 parts of microliths;

6 parts of anhydrite;

Step (2): take the polyvinyl alcohol fiber of 7 parts and the polypropylene fibre of 3 parts and mix rear stirring 40 minutes, make polymer fiber;

Step (3): the polymer fiber that adds 2 parts of steps (2) to make in the mixture making in step (1), stirs 1 hour;

Step (4): the 25:5:10:60 that is by weight ratio of high performance water reducing agent of polyocarboxy acid, polyoxyethylene nonylphenol ether, Lithium Sulphate and water is mixed, after stirring, place 15min and make frostproofer;

Step (5): by the frostproofer making in step (4), be added in the middle gained mixture of step (3), then stir 2 hours, can use.

Through contriver, experimental results show that, the concrete that present method makes can effectively be resisted the low temperature environment of-15 ℃, and can be under subzero temperature environment maintenance about 7 days, then transfer the curing strength standard of normal curing 28 to, and in this process, occur the phenomenon that corrosion building and poison gas discharge.

Claims (8)

1. a harmless type frost-resistant concrete, is characterized in that, by following raw material, is formed by weight ratio:

Cement 20-25 part;

Rubber grain 20-45 part;

Water 10-20 part;

Microlith 10-20 part;

Polymer fiber 1-2 part;

Anhydrite 4-6 part;

Frostproofer 15-20 part.

2. a kind of harmless type frost-resistant concrete as claimed in claim 1, is characterized in that, described polymer fiber adopts 2 parts.

3. a kind of harmless type frost-resistant concrete as claimed in claim 2, is characterized in that, described polymer fiber is mixed by polyvinyl alcohol fiber and polypropylene fibre.

4. a kind of harmless type frost-resistant concrete as claimed in claim 3, is characterized in that, the weight part proportioning of described polyvinyl alcohol fiber and described polypropylene fibre is 7:3.

5. a kind of harmless type frost-resistant concrete as claimed in claim 1, is characterized in that, described anhydrite adopts 6 parts.

6. a kind of harmless type frost-resistant concrete as claimed in claim 1, is characterized in that, described frostproofer is mixed and formed by high performance water reducing agent of polyocarboxy acid, polyoxyethylene nonylphenol ether, Lithium Sulphate and water.

7. a kind of harmless type frost-resistant concrete as claimed in claim 6, is characterized in that, the weight part proportioning of described high performance water reducing agent of polyocarboxy acid, polyoxyethylene nonylphenol ether, Lithium Sulphate and water is 25:5:10:60.

8. a preparation method for harmless type frost-resistant concrete, is characterized in that, comprises the steps:

Step (1): take following raw material mix and blend by weight ratio:

Cement 20-25 part;

Rubber grain 20-45 part;

Water 10-20 part;

Microlith 10-20 part;

Anhydrite 4-6 part;

Step (2): take the polyvinyl alcohol fiber of 7 parts and the polypropylene fibre of 3 parts and mix rear stirring 40 minutes, make polymer fiber;

Step (3): the polymer fiber that adds 2 parts of steps (2) to make in the mixture making in step (1), stirs 1 hour;

Step (4): the 25:5:10:60 that is by weight ratio of high performance water reducing agent of polyocarboxy acid, polyoxyethylene nonylphenol ether, Lithium Sulphate and water is mixed, after stirring, place 15min and make frostproofer;

Step (5): by the frostproofer making in step (4), be added in the middle gained mixture of step (3), then stir 2-3 hour, can use.