CN103496918A - Anti-corrosive concrete applied to high-concentration brine condition - Google Patents
Anti-corrosive concrete applied to high-concentration brine condition Download PDFInfo
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- CN103496918A CN103496918A CN201310433265.6A CN201310433265A CN103496918A CN 103496918 A CN103496918 A CN 103496918A CN 201310433265 A CN201310433265 A CN 201310433265A CN 103496918 A CN103496918 A CN 103496918A
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- gelling material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to anti-corrosive concrete applied to a high-concentration brine condition. The anti-corrosive concrete comprises a cementing material, sand, a gravel, a water-reducing agent, an air-entraining agent and an anti-freezing agent, wherein the cementing material comprises cement, coal ash and silicon powder; the mark number of the cement is 42.5. The anti-corrosion concrete disclosed by the invention has the advantages of anti-corrosive abrasion-proof component addition, low construction difficulty, low cost, good anti-corrosive effect, good abrasion-proof property and very good anti-corrosive property, effectively prevents the external force and internal stress destroy and resists the acid liquor corrosion or the fume scouring, is excellent in anti-freezing property by being added with the anti-freezing agent and suitable for four seasons, has excellent compactness and anti-seepage property, enhances the durability of concrete and prolongs the service life of the concrete.
Description
Technical field
The present invention relates to a kind of concrete, specifically a kind of anti-corrosion concrete that is applied to high strong brine condition.
Background technology
The pore porous insert that concrete is comprised of sand-cement slurry and coarse aggregate.When the mixing concrete, in order to obtain necessary workability, the mixing water added is always more than the water of hydration of cement.This part unnecessary water just is stranded in the form of free-water the pore that forms connection in concrete, and occupies certain volume.
What store due to evaporation pond is mainly strong brine, and sodium sulfate corrodibility wherein is stronger; Some local limit low temperature reaches below-20 ℃, and evaporation pond easily freezes, once form the ice cube fragment, under the effect of wind-force, can form the shock to the evaporation pond side slope, forms stronger shearing force.Consider above factor, need concrete revetment to there is the indexs such as higher anticorrosive, freeze-thaw-, intensity, should adopt modified concrete.
Summary of the invention
The object of the present invention is to provide a kind of anti-corrosion concrete that is applied to high strong brine condition.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of anti-corrosion concrete that is applied to high strong brine condition, comprise gelling material, sand, stone, water reducer, air entrapment agent and frostproofer, described gelling material comprises cement, flyash, the silica flour that label is 42.5, it is characterized in that, in described gelling material, each raw material consists of:
The total amount of gelling material is 400-500kg/m
3, wherein:
The 60-80% that cement is the gelling material gross weight,
The 20-30% that flyash is the gelling material gross weight,
The 1-10% that silica flour is the gelling material gross weight;
Sand: 700-800kg/m
3;
Stone: 1000-1200 kg/m
3;
The 0.5-0.8% that water reducer is the gelling material gross weight;
The 0.01%-0.015% that air entrapment agent is the gelling material gross weight;
The 1-3% that frostproofer is the gelling material gross weight.
In described concrete, each raw material consists of:
The total amount of gelling material is 420kg/m
3, wherein:
Cement is 70% of gelling material gross weight,
Flyash is 25% of gelling material gross weight,
Silica flour is 5% of gelling material gross weight;
Sand: 730kg/m
3;
Stone: 1120 kg/m
3;
Water reducer is 0.65% of gelling material gross weight;
Air entrapment agent is 0.012% of gelling material gross weight;
Frostproofer is 2% of gelling material gross weight.
Described sand is the mixing with arbitrary proportion of medium sand, coarse sand, and described medium sand fineness modulus is 2.4-2.7, and particle diameter is 0.35-0.5mm, and described coarse sand fineness is 3.2-3.5, and particle diameter is 0.5-0.7mm.
Described water reducer is naphthalene water reducer, and described air entrapment agent is rosin tree lipid or oil sulphur hydrochloric acid.
The particle diameter of described stone is 5-40mm.
The purity of described silica flour is 90-99.9%.
The cement that described label is 42.5 is normal silicate 42.5 cement.
In order to guarantee high-strength, the weather resistance of high performance concrete, when the configuration high performance concrete, add flyash, silica flour, the effect in concrete of flyash, silica flour is to improve concrete density and impermeability by reducing water-cement ratio, flyash and silica flour have " super folded effect " aspect water-reducing effect, can greatly improve the performances such as concrete impermeability, frost resistance, alkali resistant aggregate reaction ability and anti-harmful ion infiltration.
Beneficial effect of the present invention: concrete of the present invention, intensity: C30 standard.Concrete of the present invention adds the anticorrosion antiwear composition, and difficulty of construction is little, with low cost, and wear resisting property is good, effectively prevents external force, internal stress destruction and resists acid liquid corrosion or sweep of gases, has good antiseptic property; Add antifreezing agent, the anti-freezing property excellence, be applicable to four seasons use; There is good density and anti-permeability performance, increased concrete weather resistance, extend concrete work-ing life.Specifically see the following form.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment of the present invention 1-6 medium sand is the mixing with arbitrary proportion of medium sand, coarse sand, and described medium sand fineness modulus is 2.4-2.7, and particle diameter is 0.35-0.5mm, and described coarse sand fineness is 3.2-3.5, and particle diameter is 0.5-0.7mm.
Embodiment 1
Each raw material of the present embodiment concrete consists of:
The gross weight of gelling material is 420 kg/m
3, wherein:
Cement is 70% of gelling material gross weight, is 294kg/m
3, label 42.5,
Flyash is 25% of gelling material gross weight, is 105kg/m
3,
Silica flour is 5% of gelling material gross weight, is 21kg/m
3;
Sand: 730kg/m
3;
Stone: 1120 kg/m
3;
Water reducer is 0.65% of gelling material gross weight, is 2.73 kg/m
3;
Air entrapment agent is 0.012% of gelling material gross weight, is 50.4g/m
3;
Frostproofer is 2% of gelling material gross weight, is 8.4 kg/m
3.
Embodiment 2
Each raw material of the present embodiment concrete consists of:
The gross weight of gelling material is 420 kg/m
3, wherein:
Cement is 72% of gelling material gross weight, is 302.4kg/m
3, label 42.5,
Flyash is 25% of gelling material gross weight, is 105kg/m
3,
Silica flour is 3% of gelling material gross weight, is 12.6kg/m
3;
Sand: 750kg/m
3;
Stone: 1050 kg/m
3;
Water reducer is 0.5% of gelling material gross weight, is 2.1kg/m
3;
Air entrapment agent is 0.015% of gelling material gross weight, is 63g/m
3;
Frostproofer is 1.5% of gelling material gross weight, is 6.3kg/m
3.
Embodiment 3
Each raw material of the present embodiment concrete consists of:
The gross weight of gelling material is 500 kg/m
3, wherein:
Cement is 66% of gelling material gross weight, is 330kg/m
3, label 42.5,
Flyash is 30% of gelling material gross weight, is 150kg/m
3,
Silica flour is 4% of gelling material gross weight, is 20kg/m
3;
Sand: 730kg/m
3;
Stone: 1100 kg/m
3;
Water reducer is 0.7% of gelling material gross weight, is 3.5kg/m
3;
Air entrapment agent is 0.01% of gelling material gross weight, is 50g/m
3;
Frostproofer is 3% of gelling material gross weight, is 15kg/m
3.
Embodiment 4
Each raw material of the present embodiment concrete consists of:
The gross weight of gelling material is 450 kg/m
3, wherein:
Cement is 75% of gelling material gross weight, is 337.5kg/m
3, label 42.5,
Flyash is 23% of gelling material gross weight, is 103.5kg/m
3,
Silica flour is 2% of gelling material gross weight, is 9kg/m
3;
Sand: 800kg/m
3;
Stone: 1200 kg/m
3;
Water reducer is 0.8% of gelling material gross weight, is 3.6kg/m
3;
Air entrapment agent is 0.015% of gelling material gross weight, is 67.5g/m
3;
Frostproofer is 2% of gelling material gross weight, is 9kg/m
3.
Embodiment 5
Each raw material of the present embodiment concrete consists of:
The gross weight of gelling material is 480 kg/m
3, wherein:
Cement is 78% of gelling material gross weight, is 374.4kg/m
3, label 42.5,
Flyash is 21% of gelling material gross weight, is 100.8kg/m
3,
Silica flour is 1% of gelling material gross weight, is 4.8kg/m
3;
Sand: 700kg/m
3;
Stone: 1150 kg/m
3;
Water reducer is 0.6% of gelling material gross weight, is 2.88kg/m
3;
Air entrapment agent is 0.011% of gelling material gross weight, is 52.8g/m
3;
Frostproofer is 1% of gelling material gross weight, is 4.8kg/m
3.
Embodiment 6
Each raw material of the present embodiment concrete consists of:
The gross weight of gelling material is 400 kg/m
3, wherein:
Cement is 68% of gelling material gross weight, is 272kg/m
3, label 42.5,
Flyash is 26% of gelling material gross weight, is 104kg/m
3,
Silica flour is 6% of gelling material gross weight, is 24kg/m
3;
Sand: 750kg/m
3;
Stone: 1120 kg/m
3;
Water reducer is 0.65% of gelling material gross weight, is 2.6kg/m
3;
Air entrapment agent is 0.014% of gelling material gross weight, is 56g/m
3;
Frostproofer is 2.5% of gelling material gross weight, is 10kg/m
3.
The intensity that the present invention is applied to the anti-corrosion concrete of high strong brine condition is C30.
Table 1 is the concrete parameters of various embodiments of the present invention.
| Embodiment | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Concrete density (kg/m 3） | 2270 | 2350 | 2290 | 2300 | 2337 | 2288 |
| Air content (%) | 5 | 4.8 | 5.7 | 6 | 5.1 | 4.7 |
| Water-cement ratio | 0.29 | 0.315 | 0.3 | 0.32 | 0.31 | 0.33 |
Table 2 carries out the correlation parameter after performance test for the embodiment of the present invention.
For making concrete reach requirement of strength, should reduce concrete water-cement ratio (or water-cement ratio), the admixture high efficiency water reducing agent can reach requirement.
For improving agent on crack resistance of concrete freeze thawing ability, air-entrained agent of the present invention.The principle that air entrapment agent improves agent on crack resistance of concrete freeze thawing ability is: in concrete microstructure, the kapillary interconnected is become to independently microcavity by air entrapment agent, diameter is in the 0.1mm-1mm left and right.These cavitys have improved concrete internal structure, have reduced perviousness, thereby make water be difficult for entering inside concrete, improve concrete frost resistance.In addition, the concrete cavity structure provides internally buffered, makes moisture in concrete in the winter time during freezing and expansion, and unlikely interior pressure is excessive causes spalling.
Aspect agent on crack resistance of concrete saline alkali corrosion, especially sulphate corrosion, we consider to improve the concrete anticorrosion ability with additive.Adding coal ash of the present invention, silica flour or breeze improve concrete anti-sulphates corrosive ability.More than fineness of pulverized-coal ash should be secondary.The advantage of silica flour is that purity is high, improves the concrete anticorrosion ability good, and a small amount of silica flour can improve the concrete anticorrosion ability greatly.
Consider and may construct in winter, the present invention adds frostproofer, and the frostproofer addition content is definite by test, and addition content is no more than 3% of cement, flyash and silica flour total amount.
Concrete of the present invention has good antiseptic property, has more excellent density and anti-permeability performance, has increased concrete weather resistance, has extended concrete work-ing life, has improved concrete overall performance.
Claims (7)
1. an anti-corrosion concrete that is applied to high strong brine condition, comprise gelling material, sand, stone, water reducer, air entrapment agent and frostproofer, described gelling material comprises cement, flyash, the silica flour that label is 42.5, it is characterized in that, in described gelling material, each raw material consists of:
The total amount of gelling material is 400-500kg/m
3, wherein:
The 60-80% that cement is the gelling material gross weight,
The 20-30% that flyash is the gelling material gross weight,
The 1-10% that silica flour is the gelling material gross weight;
Sand: 700-800kg/m
3;
Stone: 1000-1200 kg/m
3;
The 0.5-0.8% that water reducer is the gelling material gross weight;
The 0.01%-0.015% that air entrapment agent is the gelling material gross weight;
The 1-3% that frostproofer is the gelling material gross weight.
2. the anti-corrosion concrete that is applied to high strong brine condition according to claim 1, is characterized in that, in described concrete, each raw material consists of:
The total amount of gelling material is 420kg/m
3, wherein:
Cement is 70% of gelling material gross weight,
Flyash is 25% of gelling material gross weight,
Silica flour is 5% of gelling material gross weight;
Sand: 730kg/m
3;
Stone: 1120 kg/m
3;
Water reducer is 0.65% of gelling material gross weight;
Air entrapment agent is 0.012% of gelling material gross weight;
Frostproofer is 2% of gelling material gross weight.
3. the anti-corrosion concrete that is applied to high strong brine condition according to claim 1 and 2, it is characterized in that, described sand is the mixing with arbitrary proportion of medium sand, coarse sand, described medium sand fineness modulus is 2.4-2.7, particle diameter is 0.35-0.5mm, described coarse sand fineness is 3.2-3.5, and particle diameter is 0.5-0.7mm.
4. the anti-corrosion concrete that is applied to high strong brine condition according to claim 1, is characterized in that, described water reducer is naphthalene water reducer, and described air entrapment agent is rosin tree lipid or oil sulphur hydrochloric acid.
5. the anti-corrosion concrete that is applied to high strong brine condition according to claim 1, is characterized in that, the particle diameter of described stone is 5-40mm.
6. the anti-corrosion concrete that is applied to high strong brine condition according to claim 1, is characterized in that, the purity of described silica flour is 90-99.9%.
7. the anti-corrosion concrete that is applied to high strong brine condition according to claim 1, is characterized in that, the cement that described label is 42.5 is normal silicate 42.5 cement.
Priority Applications (1)
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|---|---|---|---|
| CN201310433265.6A CN103496918A (en) | 2013-09-22 | 2013-09-22 | Anti-corrosive concrete applied to high-concentration brine condition |
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|---|---|---|---|
| CN201310433265.6A CN103496918A (en) | 2013-09-22 | 2013-09-22 | Anti-corrosive concrete applied to high-concentration brine condition |
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Cited By (9)
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|---|---|---|---|---|
| CN104150816A (en) * | 2014-06-04 | 2014-11-19 | 陶四新 | Rust-inhibiting concrete and preparation method thereof |
| CN104150818A (en) * | 2014-06-04 | 2014-11-19 | 陶四新 | Light weight heat preserving concrete and preparation method thereof |
| CN104150819A (en) * | 2014-06-04 | 2014-11-19 | 陶四新 | Low-cost concrete and preparation method thereof |
| CN104150817A (en) * | 2014-06-04 | 2014-11-19 | 陶四新 | Corrosion-resistant impermeable concrete and preparation method thereof |
| CN108238765A (en) * | 2018-01-15 | 2018-07-03 | 国家电网公司直流建设分公司 | A kind of anti-corrosion saline-alkali tolerant concrete and preparation method thereof |
| CN108863232A (en) * | 2018-07-27 | 2018-11-23 | 中交天津航道局有限公司 | A kind of winter construction match ratio improving concrete antifreezing performance |
| CN109665789A (en) * | 2019-01-22 | 2019-04-23 | 广西大学 | A kind of glass fibre coral marine sand concrete and preparation method thereof |
| CN110563399A (en) * | 2019-10-15 | 2019-12-13 | 巴州鼎力杆塔有限公司 | sulfate erosion resistant concrete |
| CN112110693A (en) * | 2020-08-27 | 2020-12-22 | 中国水电建设集团十五工程局有限公司 | Anti-freezing concrete suitable for alpine and high-altitude areas |
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Cited By (13)
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|---|---|---|---|---|
| CN104150817B (en) * | 2014-06-04 | 2016-05-11 | 陶四新 | A kind of anti-corrosion leak-proof concrete and preparation method thereof |
| CN104150818A (en) * | 2014-06-04 | 2014-11-19 | 陶四新 | Light weight heat preserving concrete and preparation method thereof |
| CN104150819A (en) * | 2014-06-04 | 2014-11-19 | 陶四新 | Low-cost concrete and preparation method thereof |
| CN104150817A (en) * | 2014-06-04 | 2014-11-19 | 陶四新 | Corrosion-resistant impermeable concrete and preparation method thereof |
| CN104150818B (en) * | 2014-06-04 | 2016-05-11 | 陶四新 | A kind of lightweight insulating concrete and preparation method thereof |
| CN104150816B (en) * | 2014-06-04 | 2016-05-11 | 马立斌 | A kind of resistance rust concrete and preparation method thereof |
| CN104150816A (en) * | 2014-06-04 | 2014-11-19 | 陶四新 | Rust-inhibiting concrete and preparation method thereof |
| CN108238765A (en) * | 2018-01-15 | 2018-07-03 | 国家电网公司直流建设分公司 | A kind of anti-corrosion saline-alkali tolerant concrete and preparation method thereof |
| CN108863232A (en) * | 2018-07-27 | 2018-11-23 | 中交天津航道局有限公司 | A kind of winter construction match ratio improving concrete antifreezing performance |
| CN109665789A (en) * | 2019-01-22 | 2019-04-23 | 广西大学 | A kind of glass fibre coral marine sand concrete and preparation method thereof |
| CN109665789B (en) * | 2019-01-22 | 2021-03-30 | 广西大学 | Glass fiber coral sea sand concrete and preparation method thereof |
| CN110563399A (en) * | 2019-10-15 | 2019-12-13 | 巴州鼎力杆塔有限公司 | sulfate erosion resistant concrete |
| CN112110693A (en) * | 2020-08-27 | 2020-12-22 | 中国水电建设集团十五工程局有限公司 | Anti-freezing concrete suitable for alpine and high-altitude areas |
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Application publication date: 20140108 |