CN109336485A - A kind of high-strength corrosion-resistant erosion underplate concrete - Google Patents
A kind of high-strength corrosion-resistant erosion underplate concrete Download PDFInfo
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- CN109336485A CN109336485A CN201811551251.3A CN201811551251A CN109336485A CN 109336485 A CN109336485 A CN 109336485A CN 201811551251 A CN201811551251 A CN 201811551251A CN 109336485 A CN109336485 A CN 109336485A
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- 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
-
- 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
- C04B2111/26—Corrosion of reinforcement resistance
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of high-strength corrosion-resistants to lose underplate concrete, belong to technical field of concrete, its key points of the technical solution are that score meter by weight, including 200-300 parts of cement, 50-80 parts of flyash, 100-200 parts of mineral admixture, 500-800 parts of river sand, 900-1200 parts of coarse aggregate, mass fraction are 5-10 parts of 0.1% citric acid, 5-10 parts of high-performance carboxylic acid water reducer, 40-90 parts of concrete anti-rusting preservative, 140-160 parts of water.Achieve the effect that improve agent on crack resistance of concrete resistance to spalling.
Description
Technical field
The present invention relates to concrete field, in particular to a kind of high-strength corrosion-resistant loses underplate concrete.
Background technique
In recent years, concrete structure because of premature failure caused by Material degradation so that destroy the accident of avalanche at home and abroad repeatly between
It is not fresh.Common phenomenon has concrete surface cracking, peeling, steel bar corrosion exposed, to the resistance to of concrete and reinforced concrete structure
Long property constitutes a serious threat.
With the continuous development of skyscraper, concrete foundation base plate is presented the development that intensity is high, volume is increasing and becomes
Gesture.But due to the gel material content of high-strength concrete height, hydration heat amount pair, to the temperature of mass concrete engineering with
And Crack Control brings certain difficulty.Domestic super high-rise building uses storehouse construction method, pre-buried cooling water during construction
The measures such as pipe, placement layer by layer and block placement.But these construction methods not only influence the structure of concrete, and construction technology is multiple
Miscellaneous, construction cost is high.
Summary of the invention
In view of the deficienciess of the prior art, the object of the present invention is to provide a kind of high-strength corrosion-resistants to lose underplate concrete, reach
To the effect for improving agent on crack resistance of concrete resistance to spalling.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of high-strength corrosion-resistant erosion underplate concrete, by weight score meter, including 200-300 parts of cement, 50-80 parts of flyash, mine
100-200 parts of polymer blends material, 500-800 parts of river sand, 900-1200 parts of coarse aggregate, mass fraction be 5-10 parts of 0.1% citric acid,
5-10 parts of high-performance carboxylic acid water reducer, 40-90 parts of concrete anti-rusting preservative, 140-160 parts of water.
By using above-mentioned technical proposal, the shrinkage performance that the addition of flyash can change concrete reduces, and mixes simultaneously
The mobility for coagulating soil also improves, to improve cracking resistance, stagnating on the interface between cement and rubble has a large amount of hydroxide
Calcium, crystallization on interface and aligns, and causes the intensity of concrete and durability to reduce, the addition of polycarboxylate water-reducer
Voidage after concrete hardening can be greatly lowered lowers the heat of hydration, to reduce water so that concrete becomes dense
Dosage；Concrete anti-rusting preservative and citric acid are used cooperatively, and can either reduce in concrete sulfate ion concentration simultaneously
The aperture of pore is refined, the speed for inhibiting calcium hydroxide to be precipitated from concrete delays the generation of gypsum and ettringite,
Play the role of inhibiting its expansion damage, plays the speed for slowing down that sulfate attack destroys in concrete, while concrete anti-rusting
Preservative is no chlorine and low alkali composite additive, has a resistance rust, erosion-resisting effect, at the same the calcium in citric acid and concrete from
Son combines and forms stable cyclic chelate, so that metal ion loses catalytic capability, to slow down calcium hydroxide in concrete
Precipitation, improve the cracking resistance of concrete, while citric acid is alternatively arranged as retarder, the contraction of concrete can be slowed down, into one
Step improves the cracking resistance of concrete.
The present invention is further arranged to, and further includes 20-30 parts of calcium sulphoaluminate type cement expansive material according to parts by weight.
By using above-mentioned technical proposal, normal concrete hardens in air, usually can show certain contraction
Property, this shrinkage can make inside concrete generate microcrack, deteriorate the performance of concrete, the use of swelling agent can mend
The contraction of concrete is repaid, to improve the performance of concrete, while calcium sulphoaluminate type cement expansive material not sodium salt, it should not draw
Alkali-aggregate reaction in concrete is played, durable good, expansion character is stablized.
The present invention is further arranged to, and further includes 25 parts of calcium sulphoaluminate type cement expansive material according to parts by weight.
The present invention is further arranged to, by weight score meter, and mineral admixture includes 100-150 parts of miberal powder, silicon ash 80-
120 parts.
By using above-mentioned technical proposal, miberal powder has very strong gelatification in concrete, can replace part of cement,
To reduce the dosage of cement, save the cost, while silicon ash can be improved the durability of concrete, improve the pressure resistance of concrete
Degree, guarantees the later strength of concrete, simultaneously because the particle of silicon ash is smaller than the particle of cement, can be filled in cement granules
Between gap in, the moisture being strapped in gelating material is cemented out, reduce the heat of hydration.
The present invention is further arranged to, by weight score meter, and mineral admixture includes 120 parts of miberal powder, 100 parts of silicon ash.
The present invention is further arranged to, by weight score meter, including 250 parts of cement, 65 parts of flyash, mineral admixture
150 parts, 650 parts of river sand, 1050 parts of coarse aggregate, mass fraction be 8 parts of 0.1% citric acid, 8 parts of high-performance carboxylic acid water reducer, coagulation
60 parts of native resistance rust preservative, 150 parts of water.
The present invention is further arranged to, and according to parts by weight, coarse aggregate includes 100-150 parts of continuous grading cobble, tailing
80-120 parts of stone.
By using above-mentioned technical proposal, being used cooperatively for cobble and tailings stone achievees the effect that waste utilization, connects simultaneously
Good workability is formed between continuous gradation cobble and concrete aggregate, isolation is not likely to produce, is suitably vibrated, can be obtained closely knit
Concrete, to improve the intensity of concrete.
The present invention is further arranged to, and further includes 50-100 parts of rubber powder according to parts by weight.
By using above-mentioned technical proposal, rubber powder density is small, has good toughness, fatigue resistance, by waste Crumb rubber
It is added in concrete, had both reached the reasonable utilization of resource, while after rubber powder is mixed with concrete, the cracking resistance increasing of concrete
By force, to improve the intensity of concrete floor.
The present invention is further arranged to, and further includes 80 parts of rubber powder according to parts by weight.
In conclusion the invention has the following advantages:
1, citric acid and concrete anti-rusting preservative, high-performance carboxylic acid water reducer are used cooperatively, and reduce the heat of hydration of concrete,
The voidage for reducing concrete, improves the closely knit performance of concrete, to improve the compression strength of concrete, while citric acid is also
With corrosion resisting property, the corrosion resisting property of concrete is improved；
2, calcium sulphoaluminate type cement expansive material can compensate for the contraction of concrete, to improve the performance of concrete, while sulphur
Calcium aluminate type cement expansive material not sodium salt, should not cause alkali-aggregate reaction in concrete, durable good, and expansion character is stablized；
3, the addition of rubber powder, so that rubber powder can be good at the gap being filled between glue material, so that concrete compaction, has
Effect reduces water and corrosive media enters the gap between glue material, improves the corrosion resistant of concrete while also raising concrete is steady
Determine compression strength.
Specific embodiment
Embodiment 1
A kind of high-strength corrosion-resistant erosion underplate concrete, by weight score meter, including 200-300 parts of cement, 50-80 parts of flyash, mine
100-200 parts of polymer blends material, 500-800 parts of river sand, 900-1200 parts of coarse aggregate, mass fraction be 5-10 parts of 0.1% citric acid,
5-10 parts of high-performance carboxylic acid water reducer, 40-90 parts of concrete anti-rusting preservative, 140-160 parts of water, calcium sulphoaluminate type concrete are swollen
Swollen dose 20-30 parts, 50-100 parts of rubber powder, wherein mineral admixture includes 100-150 parts of miberal powder, and 80-120 parts of silicon ash, thick bone
Material includes 100-150 parts of continuous grading cobble, 80-120 parts of tailings stone.
Embodiment 2
A kind of high-strength corrosion-resistant erosion underplate concrete, by weight score meter, including 200-300 parts of cement, 50-80 parts of flyash, mine
100-200 parts of polymer blends material, 500-800 parts of river sand, 900-1200 parts of coarse aggregate, mass fraction be 5-10 parts of 0.1% citric acid,
5-10 parts of high-performance carboxylic acid water reducer, 40-90 parts of concrete anti-rusting preservative, 140-160 parts of water, calcium sulphoaluminate type concrete are swollen
Swollen dose 20-30 parts, 50-100 parts of rubber powder, wherein mineral admixture includes 100-150 parts of miberal powder, and 80-120 parts of silicon ash, thick bone
Material includes 100-150 parts of continuous grading cobble, 80-120 parts of tailings stone.
Embodiment 3
A kind of high-strength corrosion-resistant erosion underplate concrete, by weight score meter, including 200-300 parts of cement, 50-80 parts of flyash, mine
100-200 parts of polymer blends material, 500-800 parts of river sand, 900-1200 parts of coarse aggregate, mass fraction be 5-10 parts of 0.1% citric acid,
5-10 parts of high-performance carboxylic acid water reducer, 40-90 parts of concrete anti-rusting preservative, 140-160 parts of water, calcium sulphoaluminate type concrete are swollen
Swollen dose 20-30 parts, 50-100 parts of rubber powder, wherein mineral admixture includes 100-150 parts of miberal powder, and 80-120 parts of silicon ash, thick bone
Material includes 100-150 parts of continuous grading cobble, 80-120 parts of tailings stone.
Comparative example 1
The difference is that, citric acid is free of in concrete with embodiment 2.
Comparative example 2
The difference is that, concrete anti-rusting preservative is free of in concrete with embodiment 2.
Comparative example 3
The difference is that, citric acid and concrete anti-rusting preservative are free of in concrete simultaneously with embodiment 2.
Concrete NDT
(1) it is seeped according to water resistant in GB/T50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete standard "
Saturating test method carries out concrete impermeability test to selected match ratio sample, to evaluate the seepage-resistant grade of concrete.Chloride ion seeps
The grade classification of saturating ability is as shown in table 1.Testing result is as shown in table 2.
(2) resist according in GB/T50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete standard "
Sulfate attack test method, testing result are as shown in table 3.
The grade classification of 1 chloride permeability ability of table
| Concrete type | Electric conduction quantity (C) | Chloride ion permeability |
| The conventional concrete of W/C >=0.6 | >4000 | It is high |
| The conventional concrete of W/C=0.4-0.5 | 2000-4000 | It is medium |
| The conventional concrete of W/C < 0.4 | 1000-2000 | It is low |
| Latex modified concrete, inner sealing concrete | 100-1000 | It is extremely low |
| Polymer impregnated concrete | <100 | It is negligible |
The detection data of the concrete impervious chloride ion result of table 2
| Proportion | 28d test result (C) | 56d test result (C) |
| Embodiment 1 | 680 | 405 |
| Embodiment 2 | 650 | 356 |
| Embodiment 3 | 670 | 410 |
| Comparative example 1 | 1481 | 1108 |
| Comparative example 2 | 1489 | 1009 |
| Comparative example 3 | 1550 | 1300 |
3 Concrete Resist Reinforcing Sulfate Corrosion detection data of table
| Proportion | Corrode number | Compression strength/MP | Corrosion resistance index (Kf) |
| Embodiment 1 | 120 | 66.2 | 94.2% |
| Embodiment 2 | 120 | 70.9 | 96.5% |
| Embodiment 3 | 120 | 66.8 | 94.7% |
| Comparative example 1 | 120 | 58.7 | 87.1% |
| Comparative example 2 | 120 | 57.8 | 88.2% |
| Comparative example 3 | 120 | 50.4 | 80.5% |
The analysis of table 2 can be obtained:
(1) in embodiment 1-3, the penetrating power of the resisting chloride ion penetration in embodiment 2 is all relatively low, is in 100-1000 range
It is interior, there is good Anti-Chloride Ion Penetration, illustrate that the proportion in embodiment 2 is optimum proportioning；
(2) embodiment 2 and comparative example 1-3, when being free of citric acid and concrete anti-rusting preservative in concrete, concrete
Resisting corrosion of chlorine ion is reduced compared to embodiment 2, and the resisting corrosion of chlorine ion ability phase in comparative example 1 and comparative example 2
Almost, but when not having citric acid and concrete anti-rusting anticorrosive simultaneously, the anti Cl-corrosion ability of concrete is compared
The anti Cl-corrosion ability of ratio 1 and comparative example 2 is lower, illustrates that citric acid and concrete anti-rusting preservative have erosion-resisting work
With, while citric acid and concrete anti-rusting preservative enable in concrete that calcium hydroxide stability is good, reduce concrete
Voidage refines hole, has blocked the permeation pathways being likely to form, and has both improved the corrosion resistance of concrete, while also improving
The cracking resistance of concrete.
The analysis of table 3 can be obtained:
(1) in embodiment 1-3, under conditions of identical erosion number, the compression strength and corrosion resistance index in embodiment 2 are equal
Better than embodiment 1 and embodiment 3, illustrate that the proportion in embodiment 2 is optimum proportioning；
(2) embodiment 2 and comparative example 1-3 analysis can obtain, and the compression strength and corrosion resistance index in comparative example 1-3 are below reality
Example 2 is applied, and compression strength and corrosion resistance index are similar in comparative example 1 and comparative example 2, but ought be simultaneously without citric acid and coagulation
When native resistance rust preservative, the compression strength and corrosion resistance index of concrete illustrate lemon to low in comparative example 1 and comparative example 2
Acid and concrete anti-rusting preservative are added together the intensity and corrosion resisting property that can improve concrete simultaneously, and concrete anti-rusting is anti-
Rotten agent and citric acid are used cooperatively, and can either be reduced sulfate ion concentration in concrete and be refined the aperture of pore, suppression
The speed that hydrogen manufacturing calcium oxide is precipitated from concrete delays the generation of gypsum and ettringite, plays and inhibits its expansion damage
Effect, play and slow down the speed that sulfate attack in concrete destroys.
In conclusion citric acid and concrete anti-rusting preservative are used cooperatively, can reduce in concrete sulfate radical from
Sub- concentration, while citric acid is able to suppress in calcium hydroxide concrete and is precipitated, so that the content of calcium hydroxide in concrete is reduced,
The amount of calcium hydroxide hydrolysis is reduced, the amount of calcium hydroxide in hydrolysis product of cement is reduced, improves calcium hydroxide and gathers materials in Behavior of Hardened Cement Paste-
The enrichment in section transitions area with align, to optimize interfacial structure, generate intensity is higher, stability is more excellent, quantity more
More low alkalinity hydrated calcium silicate gels, reduces the voidage of concrete so that water and etching medium be difficult to enter it is mixed
Solidifying soil is internal, and the corrosion resisting property of concrete is improved while improving the cracking resistance of concrete.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (9)
1. a kind of high-strength corrosion-resistant loses underplate concrete, it is characterised in that: score meter by weight, including 200-300 parts of cement, fine coal
50-80 parts grey, 100-200 parts of mineral admixture, 500-800 parts of river sand, 900-1200 parts of coarse aggregate, mass fraction are 0.1% lemon
5-10 parts of lemon acid, 5-10 parts of high-performance carboxylic acid water reducer, 40-90 parts of concrete anti-rusting preservative, 140-160 parts of water, water 140-
160 parts.
2. a kind of high-strength corrosion-resistant according to claim 1 loses underplate concrete, it is characterised in that: according to parts by weight, also
Including 20-30 parts of calcium sulphoaluminate type cement expansive material.
3. a kind of high-strength corrosion-resistant according to claim 2 loses underplate concrete, it is characterised in that: according to parts by weight, also
Including 25 parts of calcium sulphoaluminate type cement expansive material.
4. a kind of high-strength corrosion-resistant according to claim 1 loses underplate concrete, it is characterised in that: score meter by weight, mine
Polymer blends material includes 100-150 parts of miberal powder, 80-120 parts of silicon ash.
5. a kind of high-strength corrosion-resistant according to claim 4 loses underplate concrete, it is characterised in that: score meter by weight, mine
Polymer blends material includes 120 parts of miberal powder, 100 parts of silicon ash.
6. a kind of high-strength corrosion-resistant according to claim 1 loses underplate concrete, it is characterised in that: score meter by weight, packet
Include 250 parts of cement, 65 parts of flyash, 150 parts of mineral admixture, 650 parts of river sand, 1050 parts of coarse aggregate, mass fraction 0.1%
8 parts of citric acid, 8 parts of high-performance carboxylic acid water reducer, 60 parts of concrete anti-rusting preservative, 150 parts of water.
7. a kind of high-strength corrosion-resistant according to claim 1 loses underplate concrete, it is characterised in that: according to parts by weight, slightly
Aggregate includes 100-150 parts of continuous grading cobble, 80-120 parts of tailings stone.
8. a kind of high-strength corrosion-resistant according to claim 1 loses underplate concrete, it is characterised in that: according to parts by weight, also
Including 50-100 parts of rubber powder.
9. a kind of high-strength corrosion-resistant according to claim 8 loses underplate concrete, it is characterised in that: according to parts by weight, also
Including 80 parts of rubber powder.
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| CN201811551251.3A CN109336485A (en) | 2018-12-18 | 2018-12-18 | A kind of high-strength corrosion-resistant erosion underplate concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942260A (en) * | 2019-05-13 | 2019-06-28 | 武汉明华鸿昌新型建材有限责任公司 | A kind of preparation method of the C50 high performance concrete prepared using silicon ash |
| CN110937866A (en) * | 2019-11-27 | 2020-03-31 | 河海大学 | EDTA-2Na chelating agent-based cement-based material capable of resisting corrosion of sodium sulfate and magnesium sulfate and preparation method thereof |
| CN116283087A (en) * | 2023-03-01 | 2023-06-23 | 四川省建筑科学研究院有限公司 | High-durability concrete for drainage pipeline and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61247670A (en) * | 1985-04-24 | 1986-11-04 | 同和鉱業株式会社 | Heavy concrete |
| CN104193258A (en) * | 2014-08-14 | 2014-12-10 | 西南交通大学 | High-strength elastic concrete for heavy-haul railway sleepers |
| CN108147723A (en) * | 2017-12-28 | 2018-06-12 | 天津宝丰建材有限公司 | A kind of high-strength corrosion-resistant loses prestressed concrete pipe pile |
| CN108585661A (en) * | 2018-05-28 | 2018-09-28 | 石家庄金隅旭成混凝土有限公司 | A kind of sulfate resistance concrete and preparation method thereof |
| CN108609953A (en) * | 2018-05-21 | 2018-10-02 | 西南交通大学 | A kind of anti-folding, abrasion-proof concrete for prestressing force assembled road surface |
-
2018
- 2018-12-18 CN CN201811551251.3A patent/CN109336485A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61247670A (en) * | 1985-04-24 | 1986-11-04 | 同和鉱業株式会社 | Heavy concrete |
| CN104193258A (en) * | 2014-08-14 | 2014-12-10 | 西南交通大学 | High-strength elastic concrete for heavy-haul railway sleepers |
| CN108147723A (en) * | 2017-12-28 | 2018-06-12 | 天津宝丰建材有限公司 | A kind of high-strength corrosion-resistant loses prestressed concrete pipe pile |
| CN108609953A (en) * | 2018-05-21 | 2018-10-02 | 西南交通大学 | A kind of anti-folding, abrasion-proof concrete for prestressing force assembled road surface |
| CN108585661A (en) * | 2018-05-28 | 2018-09-28 | 石家庄金隅旭成混凝土有限公司 | A kind of sulfate resistance concrete and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张海波: "《废旧橡胶水泥混凝土界面与性能》", 30 September 2018, 冶金工业出版社 * |
| 魏立学: "《预拌混凝土企业卓越绩效模式管理手册》", 30 June 2015, 中国建材工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942260A (en) * | 2019-05-13 | 2019-06-28 | 武汉明华鸿昌新型建材有限责任公司 | A kind of preparation method of the C50 high performance concrete prepared using silicon ash |
| CN110937866A (en) * | 2019-11-27 | 2020-03-31 | 河海大学 | EDTA-2Na chelating agent-based cement-based material capable of resisting corrosion of sodium sulfate and magnesium sulfate and preparation method thereof |
| CN116283087A (en) * | 2023-03-01 | 2023-06-23 | 四川省建筑科学研究院有限公司 | High-durability concrete for drainage pipeline and application thereof |
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