CN113387637A - Anti-cracking and anti-corrosion concrete and preparation method thereof - Google Patents
Anti-cracking and anti-corrosion concrete and preparation method thereof Download PDFInfo
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- CN113387637A CN113387637A CN202110559936.8A CN202110559936A CN113387637A CN 113387637 A CN113387637 A CN 113387637A CN 202110559936 A CN202110559936 A CN 202110559936A CN 113387637 A CN113387637 A CN 113387637A
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- absorbing material
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- 239000004567 concrete Substances 0.000 title claims abstract description 70
- 238000005336 cracking Methods 0.000 title claims abstract description 37
- 238000005260 corrosion Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000011358 absorbing material Substances 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 17
- 229920002472 Starch Polymers 0.000 claims abstract description 17
- 235000019698 starch Nutrition 0.000 claims abstract description 17
- 239000008107 starch Substances 0.000 claims abstract description 17
- 238000004078 waterproofing Methods 0.000 claims abstract description 16
- 239000004576 sand Substances 0.000 claims abstract description 14
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 13
- 239000011707 mineral Substances 0.000 claims abstract description 13
- 239000010881 fly ash Substances 0.000 claims abstract description 12
- 239000011398 Portland cement Substances 0.000 claims abstract description 11
- 239000004743 Polypropylene Substances 0.000 claims abstract description 9
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 9
- -1 polypropylene Polymers 0.000 claims abstract description 9
- 229920001155 polypropylene Polymers 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 9
- 239000004575 stone Substances 0.000 claims abstract description 6
- 235000013399 edible fruits Nutrition 0.000 claims abstract description 5
- 238000003306 harvesting Methods 0.000 claims abstract 2
- 238000003756 stirring Methods 0.000 claims description 23
- 238000005303 weighing Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 239000003469 silicate cement Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical group [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001723 curing Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000002969 artificial stone Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Abstract
The invention discloses anti-cracking and anti-corrosion concrete and a preparation method thereof, wherein the anti-cracking and anti-corrosion concrete comprises the following components in parts by weight: water: 190-200 parts; portland cement: 230-260 parts; fly ash: 50-65 parts; mineral powder: 55-65 parts; medium sand: 720-830 parts; stone: 1000 and 1130 parts; modified polypropylene fiber: 6-10 parts; air-entraining type waterproofing agent: 1-1.5 parts; slightly expansive type waterproofing agent: 1-1.5 parts; diatom ooze: 10-15 parts; sodium sulfite water reducing agent: 1.5-2 parts; water-absorbing material: and (5) carrying out high yield fruit harvest at 0.75 kg/m. The invention has the following beneficial effects: 20-40% of starch grafted acrylate water-absorbing material is added in the preparation process of the concrete, and the water is supplemented in the concrete through the water-absorbing material, so that the relative humidity in the concrete is always kept at a higher level, the early cracking of the concrete caused by insufficient maintenance can be effectively relieved, and the problem of difficult maintenance caused by special climatic conditions in different regions can be solved.
Description
Technical Field
The invention relates to anti-cracking and anti-corrosion concrete and a preparation method thereof, belonging to the technical field of concrete preparation.
Background
Concrete refers to artificial stone which is made by taking cement as a main cementing material, adding water, sand, stones, chemical additives and mineral admixtures if necessary, mixing according to a proper proportion, uniformly stirring, densely forming, curing and hardening. Concrete is mainly divided into two stages and states: plastic state before setting and hardening, namely fresh concrete or concrete mixture; hardened, i.e. hardened concrete or concrete.
The traditional concrete mostly adopts a watering covering external curing method, generally can be implemented after a formwork is removed, has negative influence on the appearance, permeability and the like of the concrete surface layer in a plastic stage, is only suitable for solving the problem of water evaporation of hardened concrete, is difficult to prevent early plastic cracking of the concrete, and cannot meet the requirement of external curing.
In order to achieve the aim of inhibiting plastic cracking, an anti-cracking and anti-corrosion concrete and a preparation method thereof are provided.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides anti-cracking and anti-corrosion concrete and a preparation method thereof.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to an anti-cracking and anti-corrosion concrete which comprises the following components in parts by weight:
water: 190-200 parts;
portland cement: 230-260 parts;
fly ash: 50-65 parts;
mineral powder: 55-65 parts;
medium sand: 720-830 parts;
stone: 1000 and 1130 parts;
modified polypropylene fiber: 6-10 parts;
air-entraining type waterproofing agent: 1-1.5 parts;
slightly expansive type waterproofing agent: 1-1.5 parts;
diatom ooze: 10-15 parts;
sodium sulfite water reducing agent: 1.5-2 parts;
water-absorbing material: carrying out high-speed fruit thinning at 0.75 kg/m;
wherein the air-entraining type waterproofing agent adopts sodium dodecyl benzene sulfonate.
Wherein the micro-expansion type waterproof adopts UEA expanding agent.
Wherein, the water absorbing material adopts 20 to 40 percent of starch grafted acrylate water absorbing material.
Wherein the specific surface area of the portland cement fineness is less than or equal to 350m 2/kg.
Wherein the ratio of water to fly ash is 0.49-0.55.
A preparation method of anti-cracking and anti-corrosion concrete comprises the following steps:
1. firstly, weighing silicate cement and medium sand with corresponding weight, putting the silicate cement and the medium sand into a pneumatic vibration stirrer for stirring for 45-65 seconds;
2. then weighing fly ash, mineral powder, modified polypropylene fiber and diatom ooze with corresponding components, adding into the stirrer in the step 1, continuously stirring and mixing for 30-45s, adding water with half of the proportion component, and continuously stirring for 30-45s to mix into mortar with uniform color;
3. and (3) adding 20-40% of the starch grafted acrylate water-absorbing material with the corresponding weight into the stirrer in the step (2) for continuously stirring and mixing for 30-45s, then adding the air-entraining type waterproof agent, the micro-expansive type waterproof agent and the sodium sulfite water reducing agent with the corresponding weight into the stirrer, adding the remaining half of the water with the proportion and continuously stirring for 65-85s until the mixture is uniform, and thus preparing the anti-cracking and anti-corrosion concrete.
In conclusion, the invention has the following beneficial effects:
1. 20-40% of starch grafted acrylate water-absorbing material is added in the preparation process of the concrete, and the water is supplemented in the concrete through the water-absorbing material, so that the relative humidity in the concrete is always kept at a higher level, the early cracking of the concrete caused by insufficient maintenance can be effectively relieved, and the problem of difficult maintenance caused by special climatic conditions in different regions can be solved.
2. The starch grafted acrylate water-absorbing material has the super-strong water-absorbing performance, so that the starch grafted acrylate water-absorbing material plays a role of a water storage tank in a concrete mixed material, slowly releases stored water along with hydration of cement minerals in the concrete, maintains the relative humidity in the concrete and further reduces the shrinkage of the concrete.
3. By adding the diatom ooze, the diatom ooze has good anticorrosion and mildewproof effects, and the anticorrosion effect of concrete is improved.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.
Example 1
The invention relates to an anti-cracking and anti-corrosion concrete which comprises the following components in parts by weight:
water: 190 parts of Portland cement: 230 parts of fly ash: 50 parts of mineral powder: 55 parts of medium sand: 720 parts of stones: 1000 parts of modified polypropylene fiber: 6 parts of air-entraining waterproofing agent: 1 part of slightly expansive type waterproof agent: 1 part of diatom ooze: 10 parts of sodium sulfite water reducing agent: 1.5 parts of water absorbing material: carrying out high-speed fruit thinning at 0.75 kg/m;
specifically, the air-entraining type waterproofing agent adopts sodium dodecyl benzene sulfonate.
Specifically, the micro-expansion type waterproof adopts a UEA expanding agent.
Specifically, the water absorbing material is a 20% starch grafted acrylate water absorbing material, and water is supplemented in the concrete through the water absorbing material, so that the relative humidity in the concrete is always kept at a higher level, the early cracking of the concrete caused by insufficient curing can be effectively relieved, and the problem of difficult curing caused by special climatic conditions in different regions can be solved; and the starch grafted acrylate water-absorbing material has the super-strong water-absorbing performance, so that the starch grafted acrylate water-absorbing material plays a role of a water storage tank in a concrete mixed material, slowly releases stored water along with hydration of cement minerals in the concrete, maintains the relative humidity in the concrete and further reduces the shrinkage of the concrete.
Furthermore, the specific surface area of the portland cement fineness is 350m2/kg, so that the portland cement fineness is reduced, the cracking temperature of concrete is reduced, and the risk of shrinkage cracking is reduced.
Further, the ratio of water to fly ash is 0.49-0.55.
A preparation method of anti-cracking and anti-corrosion concrete comprises the following steps:
1. firstly, weighing silicate cement and medium sand with corresponding components, putting the silicate cement and the medium sand into a pneumatic vibration stirrer for stirring for 45s, and adopting pneumatic vibration stirring to ensure that particles of each component of the concrete contain the anti-cracking components which are uniformly distributed, thereby improving the strength of the concrete, the chloride ion penetration resistance and the carbonization resistance;
2. then weighing fly ash, mineral powder, modified polypropylene fiber and diatom ooze with corresponding components, adding into the stirrer in the step 1, continuously stirring and mixing for 30s, adding water with half of the proportion component, and continuously stirring for 30s to form mortar with uniform color;
3. and (3) adding 20% of the starch grafted acrylate water-absorbing material with the corresponding weight into the stirrer in the step (2) for continuously stirring and mixing for 30s, then adding the air-entraining type waterproofing agent, the micro-expansion type waterproofing agent and the sodium sulfite water reducing agent with the corresponding weight into the stirrer, adding the remaining half of the water with the weight ratio, and continuously stirring for 65s until the mixture is uniform, thereby preparing the anti-cracking and anti-corrosive concrete.
Example 2
The invention relates to an anti-cracking and anti-corrosion concrete which comprises the following components in parts by weight:
water: 200 parts of Portland cement: 260 parts of coal ash: 65 parts of mineral powder: 65 parts of medium sand: 830 parts of stones: 1130 parts of modified polypropylene fiber: 10 parts of air-entraining type waterproofing agent: 1.5 parts of slightly expansive type waterproof agent: 1.5 parts of diatom ooze: 15 parts of sodium sulfite water reducing agent: 2 parts of water absorbing material: carrying out high-speed fruit thinning at 0.75 kg/m;
specifically, the air-entraining type waterproofing agent adopts sodium dodecyl benzene sulfonate.
Specifically, the micro-expansion type waterproof adopts a UEA expanding agent.
Specifically, the water absorbing material is a 40% starch grafted acrylate water absorbing material, and water is supplemented in the concrete through the water absorbing material, so that the relative humidity in the concrete is always kept at a higher level, the early cracking of the concrete caused by insufficient curing can be effectively relieved, and the problem of difficult curing caused by special climatic conditions in different regions can be solved; and the starch grafted acrylate water-absorbing material has the super-strong water-absorbing performance, so that the starch grafted acrylate water-absorbing material plays a role of a water storage tank in a concrete mixed material, slowly releases stored water along with hydration of cement minerals in the concrete, maintains the relative humidity in the concrete and further reduces the shrinkage of the concrete.
Furthermore, the specific surface area of the portland cement fineness is 350m2/kg, so that the portland cement fineness is reduced, the cracking temperature of concrete is reduced, and the risk of shrinkage cracking is reduced.
Further, the ratio of water to fly ash is 0.49-0.55.
A preparation method of anti-cracking and anti-corrosion concrete comprises the following steps:
1. firstly, weighing silicate cement and medium sand with corresponding components, putting the silicate cement and the medium sand into a pneumatic vibration stirrer for stirring for 45s, and adopting pneumatic vibration stirring to ensure that particles of each component of the concrete contain the anti-cracking components which are uniformly distributed, thereby improving the strength of the concrete, the chloride ion penetration resistance and the carbonization resistance;
2. then weighing fly ash, mineral powder, modified polypropylene fiber and diatom ooze with corresponding components, adding into the stirrer in the step 1, continuously stirring and mixing for 30s, adding water with half of the proportion component, and continuously stirring for 30s to form mortar with uniform color;
3. and (3) adding 40% of starch grafted acrylate water-absorbing material with corresponding weight into the stirrer in the step (2) for continuously stirring and mixing for 45s, then adding air-entraining type waterproofing agent, micro-expansion type waterproofing agent and sodium sulfite water reducing agent with corresponding weight into the stirrer, adding the remaining half of the water with the weight ratio, and continuously stirring for 85s until the mixture is uniform, thereby preparing the anti-cracking and anti-corrosive concrete.
Comparative example 1
The procedure was as in example 1 except that the water-absorbent material and the diatom ooze were 0 part.
Comparative example 2
The procedure was as in example 2 except that the water-absorbent material and the diatom ooze were 0 parts.
The concrete obtained in example 1 and example 2 and comparative example 1 and example 2 were subjected to the performance test, and the test results are shown in the following table:
the concrete produced by the formula provided by the invention has excellent anti-cracking and anti-corrosion effects as can be seen from the examples 1 and 2, and the comparative examples 1 and 2.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The anti-cracking and anti-corrosion concrete is characterized in that: the composition comprises the following components in parts by weight:
water: 190-200 parts;
portland cement: 230-260 parts;
fly ash: 50-65 parts;
mineral powder: 55-65 parts;
medium sand: 720-830 parts;
stone: 1000 and 1130 parts;
modified polypropylene fiber: 6-10 parts;
air-entraining type waterproofing agent: 1-1.5 parts;
slightly expansive type waterproofing agent: 1-1.5 parts;
diatom ooze: 10-15 parts;
sodium sulfite water reducing agent: 1.5-2 parts;
water-absorbing material: and (5) carrying out high yield fruit harvest at 0.75 kg/m.
2. The anti-cracking and anti-corrosion concrete as claimed in claim 1, wherein the air-entraining type waterproofing agent is sodium dodecyl benzene sulfonate.
3. The anti-cracking and anti-corrosion concrete as claimed in claim 1, wherein the micro-expansion type waterproof adopts UEA expanding agent.
4. The anti-cracking and anti-corrosion concrete as claimed in claim 1, wherein the water absorbing material is 20-40% starch grafted acrylate water absorbing material.
5. The anti-cracking and anti-corrosion concrete as claimed in claim 1, wherein the specific surface area of the portland cement fineness is less than or equal to 350m 2/kg.
6. The anti-cracking and anti-corrosion concrete as claimed in claim 1, wherein the ratio of water to fly ash is 0.49-0.55.
7. The preparation method of the anti-cracking and anti-corrosion concrete as claimed in claims 1-5, which is characterized by comprising the following steps:
firstly, weighing silicate cement and medium sand with corresponding weight, putting the silicate cement and the medium sand into a pneumatic vibration stirrer for stirring for 45-65 seconds;
then weighing fly ash, mineral powder, modified polypropylene fiber and diatom ooze with corresponding components, adding into the stirrer in the step 1, continuously stirring and mixing for 30-45s, adding water with half of the proportion component, and continuously stirring for 30-45s to mix into mortar with uniform color;
and (3) weighing 20-40% of the starch grafted acrylate water-absorbing material with the corresponding weight, adding the starch grafted acrylate water-absorbing material into the stirrer in the step (2), continuously stirring and mixing for 30-45s, then weighing the air-entraining type waterproof agent, the micro-expansive type waterproof agent and the sodium sulfite water reducing agent with the corresponding weight, adding the rest half of the water with the weight ratio into the stirrer, and continuously stirring for 65-85s until the mixture is uniform, thereby preparing the anti-cracking and anti-corrosion concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559936.8A CN113387637A (en) | 2021-05-21 | 2021-05-21 | Anti-cracking and anti-corrosion concrete and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110559936.8A CN113387637A (en) | 2021-05-21 | 2021-05-21 | Anti-cracking and anti-corrosion concrete and preparation method thereof |
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| CN113387637A true CN113387637A (en) | 2021-09-14 |
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| CN202110559936.8A Pending CN113387637A (en) | 2021-05-21 | 2021-05-21 | Anti-cracking and anti-corrosion concrete and preparation method thereof |
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| CN113800856A (en) * | 2021-10-08 | 2021-12-17 | 厦门超荣建材有限公司 | Concrete drain pipe with good anti-permeability performance and production process thereof |
| CN113998975A (en) * | 2021-11-25 | 2022-02-01 | 南京工业大学 | Gypsum-based ceramic tile cementing material and preparation method thereof |
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| CN108996962A (en) * | 2018-07-26 | 2018-12-14 | 上海石化安东混凝土有限公司 | Anti-permeation cracking-resistant concrete and preparation method thereof |
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2021
- 2021-05-21 CN CN202110559936.8A patent/CN113387637A/en active Pending
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| CN108249956A (en) * | 2018-03-24 | 2018-07-06 | 广州市佑佳加气混凝土制品有限公司 | A kind of production method of autoclave aerated concrete building block |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113800856A (en) * | 2021-10-08 | 2021-12-17 | 厦门超荣建材有限公司 | Concrete drain pipe with good anti-permeability performance and production process thereof |
| CN113998975A (en) * | 2021-11-25 | 2022-02-01 | 南京工业大学 | Gypsum-based ceramic tile cementing material and preparation method thereof |
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Application publication date: 20210914 |