CN109704675A - Anti-corrosion and anti-rust concrete and application thereof - Google Patents
Anti-corrosion and anti-rust concrete and application thereof Download PDFInfo
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- CN109704675A CN109704675A CN201910043345.8A CN201910043345A CN109704675A CN 109704675 A CN109704675 A CN 109704675A CN 201910043345 A CN201910043345 A CN 201910043345A CN 109704675 A CN109704675 A CN 109704675A
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Abstract
The invention relates to the technical field of concrete, in particular to corrosion-resistant and rust-resistant concrete which comprises the following components in parts by weight: 420 parts of cement, 680 parts of sand, 1200 parts of stone, 35-50 parts of fly ash, 35-50 parts of mineral powder, 8-15 parts of pumping aid, 8-15 parts of concrete preservative, 8-15 parts of rust inhibitor and 200 parts of water, 150 parts of sand; the corrosion-resistant and rust-resistant concrete has corrosion resistance and rust resistance; the invention also provides application of the anti-corrosion and anti-rust concrete in a cast-in-place pile.
Description
Technical field
The present invention relates to the technical fields of concrete, and in particular to a kind of corrosion-prevention rust-resistance concrete and its application.
Background technique
For marine structure, sea sand building and varieties in saline-alkali areas building, contain a large amount of chlorine in coastal area or ambient enviroment
Ion and sulfate ion easily generate corrosion effect to reinforcing bar and concrete, reduce concrete basicity, destroy the blunt of rebar surface
Change film, cause steel bar corrosion and expansion, further result in crack and peeling, structure uses function and mechanical property
It can constantly deteriorate.For this purpose, expert proposes that various measures improve the anti-corrosion ability of concrete structure both at home and abroad, wherein in concrete
Addition corrosion inhibitor is exactly a kind of economical and practical, easy construction effective measures.
Concrete foundation is chronically in the environment of this high chloride ion and sulfate ion, can be because Chloride Attack is mixed
Solidifying soil leads to reinforcement corrosion and makes structure that Random early Detection occur, loses the endurance quality of structure, split concrete structure generation
Seam, breakage, the normal use for falling off and seriously affecting concrete structure, reduce the actual life of engineering.
Summary of the invention
In view of the deficienciess of the prior art, the first purpose of this invention is to provide a kind of corrosion-prevention rust-resistance concrete,
The corrosion resistance and anticorrosion performance of concrete can effectively be improved.
Above-mentioned purpose of the invention is achieved through the following technical solutions:
A kind of corrosion-prevention rust-resistance concrete, the component including following parts by weight: 300-420 parts of cement, 680-730 parts of sand, stone
980-1200 parts, 35-50 parts of flyash, 35-50 parts of miberal powder, 8-15 parts of pumping admixture, 8-15 parts of concrete antiseptic agent, corrosion inhibitor 8-
15 parts and water 150-200 parts.
By using above-mentioned technical proposal, concrete antiseptic agent breaches the etch-proof traditional idea of armored concrete, can
So that concrete has the superperformances such as salt resistance class ion erosion, the destruction of freeze thawing resistance circulation and highly resistance infiltration, it is particularly suitable to mixed
Solidifying soil building had not only required anti-corrosion but also had required impervious engineering, and incorporation concrete antiseptic agent can be such that concrete shrinkage value reduces,
Convenient for mass concrete construction；This anti-corrosion method also fully utilizes industrial waste-flyash simultaneously, has environmentally protective
Meaning；Using concrete antiseptic agent production concrete have corrosion-resistant, freeze thawing resistance, high intensity, it is impermeable, shrink it is small, subtract
The high excellent properties of water rate are improved and are mixed by the way that water-reducing agent or minerals admixture is added in ordinary portland cement merely
The density of soil is coagulated, but reduces the aperture that can be invaded sulfate ion concentration in concrete and refine pore, inhibits hydrogen-oxygen
Change the speed that calcium is precipitated from Behavior of Hardened Cement Paste, reach the generation for delaying gypsum and ettringite, plays and inhibit its expansion damage
Effect, and then the speed for delaying Concrete Sulfate Attack to destroy is played, it can effectively prevent entringite crystallographic expansion from destroying, stone
Cream crystallographic expansion is destroyed, magnesium salts crystalise is destroyed, thaumasite crystalline fracture, to improve the durability of concrete structure.Add
Enter corrosion inhibitor, cooperate with preservative, improve the anticorrosive and rustless property of concrete structure, improves durability.
Preferably, including the component of following parts by weight: 330-400 parts of cement, 695-718 parts of sand, stone 990-
1120 parts, 40-48 parts of flyash, 40-48 parts of miberal powder, 10-13 parts of pumping admixture, 10-13 parts of concrete antiseptic agent, corrosion inhibitor 10-
13 parts and water 165-180 parts.
By using above-mentioned technical proposal, component additive amount is advanced optimized, the corrosion-prevention rust-resistance performance of concrete is improved, mentions
The durability of tall concrete structure.
Preferably, the sand is middle sand, sand coarse aggregate ratio 37.8%-41.2%.
Preferably, the water-cement ratio of the corrosion-prevention rust-resistance concrete is 0.36-0.41.
By using above-mentioned technical proposal, sand coarse aggregate ratio and water-cement ratio are controlled, improves the workability of concrete, and make concrete
Workability and intensity are in optimum value.
Preferably, the cement is the ordinary portland cement of P.O42.5, the stone is 5-25mm continuous grading
Rubble, crush values 7.4%, clay content are not more than 0.7%.
By using above-mentioned technical proposal, P.O42.5 refers to ordinary portland cement, and 28 days compression strength reaches
42.5MPa.The rubble of continuous grading improves the structure density of inside concrete, improves the intensity of concrete, improves concrete
Durability.
Preferably, the pumping admixture is waterproof pumping admixture.
By using above-mentioned technical proposal, pumping admixture, also known as concrete pump-feed agent are a kind of improvement concrete pumpings
There is the additive of energy brilliant water reducing and strength-increasing effect and slow setting to protect plasticity energy.Using waterproof pumping admixture, concrete can be improved and mixed
The workability of object is closed, bleeding performance and isolation are reduced, increases consistency, improves resistance to compression, anti-folding, tensile strength, and delay aquation
Heating rate avoids cracking, and keeps concrete more closely knit, improves durability.
Preferably, the concrete antiseptic agent is identical as the addition weight of corrosion inhibitor, the miberal powder and flyash add
Add weight is identical.
It is identical as the additive amount of miberal powder by control flyash by using above-mentioned technical proposal, cooperate antiseptic concrete
Agent and corrosion inhibitor and control concrete antiseptic agent, manufactured cementitious material identical as the addition weight of corrosion inhibitor, sulfate resistance
Ability has been more than the level of AS advanced sulfur-resistant acid salt cement specified in " railway concrete and stonework specification " annex 13, right
The endurance quality and workability of concrete improve a lot.
Preferably, the concrete antiseptic agent is sulfate resistance preservative.
By using above-mentioned technical proposal, the antiseptic property of concrete can be further improved, reduction can invade concrete
Middle sulfate ion concentration and the aperture for refining pore, the speed for inhibiting calcium hydroxide to be precipitated from Behavior of Hardened Cement Paste, reach and delay
The generation of gypsum and ettringite is played the role of inhibiting its expansion damage, and then plays and delay Concrete Sulfate Attack
The speed of destruction improves the durability of concrete structure.
Preferably, the flyash is I grades of selection by winnowing flyash, the miberal powder is S95 miberal powder.
By using above-mentioned technical proposal, flyash is the fine ash that catching is got off from the flue gas after coal combustion, flyash
It is the primary solids waste of coal-burning power plant's discharge.The main oxides of Chinese thermal power plant's flyash form are as follows: SiO2、Al2O3、
FeO、Fe2O3、CaO、TiO2Deng.Flyash is one of biggish industrial residue of the current discharge capacity in China, with the hair of power industry
Exhibition, the flyash discharge capacity of coal-burning power plant increase year by year.A large amount of flyash is untreated, will generate fugitive dust, pollutes atmosphere；
Silt up if being discharged into water system and will cause river, and toxic chemical substance therein can also cause damages to human body and biology, by fine coal
Admixture of the ash as concrete, i.e., it is energy saving and environmentally friendly.Under normal circumstances, second level can be used in concrete works C30 or less (containing)
Level-one flyash can be used in flyash, C30 or more, and three-level flyash does not use in principle.Miberal powder is divided into three ranks: S105,
S95, S75 are mainly distinguished with miberal powder activity index, and S105 miberal powder activity index 28 days >=105%, S95 miberal powder activity refers to
Number 28 days >=95%, S75 miberal powder activity index 28 days >=75%.
A second object of the present invention is to provide a kind of application of above-mentioned corrosion-prevention rust-resistance concrete in bored concrete pile.
In conclusion the invention has the following beneficial effects:
(1) corrosion-prevention rust-resistance concrete of the invention, probability is minimum reaches 1.1% for corrosion, Anti-Chloride Ion Penetration grade highest
Reach V grades, compared with the concrete of the prior art, anti-corrosion, anticorrosion performance improve, and reach excellent level；
(2) compression strength of corrosion-prevention rust-resistance concrete 28d of the invention is up to 94.7Mpa, the performances such as the slump, shrinkage
It is up to standard, have the advantages that durability and high intensity.
Specific embodiment
The contents of the present invention are further detailed combined with specific embodiments below.
In the raw material of corrosion-prevention rust-resistance concrete of the present invention: pumping admixture is selected from Hebei blueness Huajian material Co., Ltd, model ZQ-
3 waterproof pumping admixtures；Concrete antiseptic agent is selected from Hebei blueness Huajian material Co., Ltd, model FSS-7A sulfate resistance preservative；
Corrosion inhibitor is selected from Hebei blueness Huajian material Co., Ltd, the efficient corrosion inhibitor of model FS-7B；Cement is the common silicic acid of P.O42.5
Salt cement；Stone is the rubble of the continuous grading of 5-25mm, and crush values 7.4%, clay content is no more than 0.7%；Miberal powder is S95
Miberal powder；Flyash is I grades of selection by winnowing flyash；Sand is middle sand.
Embodiment 1
A kind of corrosion-prevention rust-resistance concrete, the raw material components including following parts by weight: P.O42.5 ordinary portland cement 300kg, in
980kg, I grades of sand 680kg, stone selection by winnowing flyash 35kg, S95 miberal powder 50kg, ZQ-3 waterproof pumping admixture 8kg, FSS-7A sulfur resistive
Hydrochlorate preservative 8kg, FS-7B efficient corrosion inhibitor 8kg and water 150kg, wherein sand coarse aggregate ratio is 41.0%, water-cement ratio 0.41.
Embodiment 2
A kind of corrosion-prevention rust-resistance concrete, the raw material components including following parts by weight: P.O42.5 ordinary portland cement 300kg, in
980kg, I grades of sand 680kg, stone selection by winnowing flyash 50kg, S95 miberal powder 35kg, ZQ-3 waterproof pumping admixture 8kg, FSS-7A sulfur resistive
Hydrochlorate preservative 8kg, FS-7B efficient corrosion inhibitor 8kg and water 150kg, wherein sand coarse aggregate ratio is 41.0%, water-cement ratio 0.41.
Embodiment 3
A kind of corrosion-prevention rust-resistance concrete, the raw material components including following parts by weight: P.O42.5 ordinary portland cement 300kg, in
980kg, I grades of sand 680kg, stone selection by winnowing flyash 35kg, S95 miberal powder 35kg, ZQ-3 waterproof pumping admixture 8kg, FSS-7A sulfur resistive
Hydrochlorate preservative 8kg, FS-7B efficient corrosion inhibitor 8kg and water 150kg, wherein sand coarse aggregate ratio is 41.0%, water-cement ratio 0.41.
Embodiment 4
A kind of corrosion-prevention rust-resistance concrete, the raw material components including following parts by weight: P.O42.5 ordinary portland cement 300kg, in
980kg, I grades of sand 680kg, stone selection by winnowing flyash 35kg, S95 miberal powder 35kg, ZQ-3 waterproof pumping admixture 8kg, FSS-7A sulfur resistive
Hydrochlorate preservative 8kg, FS-7B efficient corrosion inhibitor 15kg and water 150kg, wherein sand coarse aggregate ratio is 41.0%, water-cement ratio 0.41.
Embodiment 5
A kind of corrosion-prevention rust-resistance concrete, the raw material components including following parts by weight: P.O42.5 ordinary portland cement 300kg, in
980kg, I grades of sand 680kg, stone selection by winnowing flyash 35kg, S95 miberal powder 35kg, ZQ-3 waterproof pumping admixture 8kg, FSS-7A sulfur resistive
Hydrochlorate preservative 15kg, FS-7B efficient corrosion inhibitor 8kg and water 150kg, wherein sand coarse aggregate ratio is 41.0%, water-cement ratio 0.41.
Embodiment 6
A kind of corrosion-prevention rust-resistance concrete, the raw material components including following parts by weight: P.O42.5 ordinary portland cement 330kg, in
990kg, I grades of sand 695kg, stone selection by winnowing flyash 40kg, S95 miberal powder 40kg, ZQ-3 waterproof pumping admixture 10kg, FSS-7A sulfur resistive
Hydrochlorate preservative 10kg, FS-7B efficient corrosion inhibitor 10kg and water 165kg, wherein sand coarse aggregate ratio is 41.2%, water-cement ratio 0.40.
Embodiment 7
A kind of corrosion-prevention rust-resistance concrete, the raw material components including following parts by weight: P.O42.5 ordinary portland cement 363kg, in
Sand 710kg, stone 1075kg, I grades of selection by winnowing flyash 44kg, S95 miberal powder 44kg, ZQ-3 waterproof pumping admixtures 10.8kg, FSS-7A
Sulfate resistance preservative 11.8kg, FS-7B efficient corrosion inhibitor 11.8kg and water 183kg, wherein sand coarse aggregate ratio is 39.8%, and water-cement ratio is
0.41。
Embodiment 8
A kind of corrosion-prevention rust-resistance concrete, the raw material components including following parts by weight: P.O42.5 ordinary portland cement 400kg, in
Sand 718kg, stone 1120kg, I grades of selection by winnowing flyash 48kg, S95 miberal powder 48kg, ZQ-3 waterproof pumping admixture 13kg, FSS-7A are anti-
Sulfate preservative 13kg, FS-7B efficient corrosion inhibitor 13kg and water 180kg, wherein sand coarse aggregate ratio is 39.1%, water-cement ratio 0.36.
Embodiment 9
A kind of corrosion-prevention rust-resistance concrete, the raw material components including following parts by weight: P.O42.5 ordinary portland cement 420kg, in
Sand 730kg, stone 1200kg, I grades of selection by winnowing flyash 50kg, S95 miberal powder 50kg, ZQ-3 waterproof pumping admixture 15kg, FSS-7A are anti-
Sulfate preservative 15kg, FS-7B efficient corrosion inhibitor 15kg and water 200kg, wherein sand coarse aggregate ratio is 37.8%, water-cement ratio 0.38.
Embodiment 10
A kind of corrosion-prevention rust-resistance concrete, the raw material components including following parts by weight: P.O42.5 ordinary portland cement 360kg, in
Sand 708kg, stone 1060kg, I grades of selection by winnowing flyash 45kg, S95 miberal powder 45kg, ZQ-3 waterproof pumping admixtures 10.8kg, FSS-7A
Sulfate resistance preservative 11.3kg, FS-7B efficient corrosion inhibitor 11.3kg and water 176kg, wherein sand coarse aggregate ratio is 40.0%, and water-cement ratio is
0.39。
Corrosion-prevention rust-resistance concrete in any one embodiment in the embodiment of the present invention 1-10 is applied to tower by application examples
In platform 63# bored concrete pile, the requirement of the performances such as construction requirement, compression strength, the anti-corrosion of control tower can satisfy, there are anti-corrosive properties
The advantage that energy is good, anticorrosion performance is excellent and durability is good.
Comparative example 1
Comparative example 1 and the difference of embodiment 3 are: without FSS-7A sulfate resistance preservative in the raw material components in comparative example 1,
It is remaining consistent with embodiment 3.
Comparative example 2
Comparative example 2 and the difference of embodiment 3 are: without the efficient corrosion inhibitor of FS-7B in the raw material components in comparative example 2, remaining with
Embodiment 3 it is consistent.
Comparative example 3
Comparative example 3 and the difference of embodiment 3 are: without ZQ-3 waterproof pumping admixture in the raw material components in comparative example 3, remaining and reality
Apply the consistent of example 3.
Comparative example 4
Comparative example 4 is concrete prepared by embodiment 3 in the application for a patent for invention that Authorization Notice No. is 104591675 B of CN.
Performance detection is according to " Standard for quality control of concrete " GB/50164-2011, " the permanent performance of normal concrete and resistance to
Long method for testing performance standard " GB/T50082-2009, " reinforcement in concrete detection technique regulation " JGJ/T52-2008, to reality
Apply long-term behaviour, sulphate-corrosion resistance energy, chloride-penetration resistance, the concrete receipts of the concrete of a 1-10 and comparative example 1-4
The performances such as contracting amount, Corroded Reinforced Concrete probability are detected, and specific testing result is shown in Table 1.
The performance test results of the concrete of table 1 embodiment 1-10 and comparative example 1-4
Show the high comprehensive performance of concrete of the invention by the testing result in table 1, the compression strength of 28d is up to
94.7Mpa, probability is minimum reaches 1.1% for corrosion, and Anti-Chloride Ion Penetration grade is up to V grades, the patent with comparative example 4
Apply for that disclosed concrete is compared, properties have further promotion, and reach excellent level, reflect the present invention
The advantages of function admirables such as concrete durability, corrosion resistance, high intensity.
By embodiment 1-5 in table 1 it is found that in concrete of the invention concrete antiseptic agent and corrosion inhibitor additive amount, mine
The additive amount of powder and flyash, shrinkage, Anti-Chloride Ion Penetration grade, compression strength and corrosion with concrete of the present invention
The performances such as probability have an impact；By embodiment 1-3 it is found that in miberal powder situation identical with the additive amount of flyash, the present invention
Concrete comprehensive performance more preferably；By embodiment 3-5 it is found that in concrete antiseptic agent feelings identical with the additive amount of corrosion inhibitor
Under condition, the comprehensive performance of concrete of the invention is more preferably.By comparative example 1-3 it is found that the concrete antiseptic agent in the present invention, resistance rust
Agent, pumping admixture have biggish shadow to the Anti-Chloride Ion Penetration grade and corrosion probability of corrosion-prevention rust-resistance concrete of the invention
It rings.
Above-mentioned specific embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as
All by the protection of Patent Law in scope of the presently claimed invention.
Claims (10)
1. a kind of corrosion-prevention rust-resistance concrete, which is characterized in that the component including following parts by weight: 300-420 parts of cement, sand
680-730 parts, 980-1200 parts of stone, 35-50 parts of flyash, 35-50 parts of miberal powder, 8-15 parts of pumping admixture, concrete antiseptic agent
8-15 parts, 8-15 parts of corrosion inhibitor and 150-200 parts of water.
2. corrosion-prevention rust-resistance concrete according to claim 1, which is characterized in that the component including following parts by weight: cement
330-400 parts, 695-718 parts of sand, 990-1120 parts of stone, 40-48 parts of flyash, 40-48 parts of miberal powder, pumping admixture 10-13
Part, 10-13 parts of concrete antiseptic agent, 10-13 parts of corrosion inhibitor and 165-180 parts of water.
3. corrosion-prevention rust-resistance concrete according to claim 1, it is characterised in that: the sand is middle sand, and sand coarse aggregate ratio is
37.8%-41.2%。
4. corrosion-prevention rust-resistance concrete according to claim 1, it is characterised in that: the water-cement ratio of the corrosion-prevention rust-resistance concrete
For 0.36-0.41.
5. corrosion-prevention rust-resistance concrete according to claim 1, it is characterised in that: the cement is the ordinary silicon of P.O42.5
Acid salt cement, the stone are the rubble of 5-25mm continuous grading, and crush values 7.4%, clay content is no more than 0.7%.
6. corrosion-prevention rust-resistance concrete according to claim 1, it is characterised in that: the pumping admixture is waterproof pumping admixture.
7. corrosion-prevention rust-resistance concrete according to claim 1, it is characterised in that: the concrete antiseptic agent and corrosion inhibitor
Addition weight is identical, and the miberal powder is identical as the addition weight of flyash.
8. corrosion-prevention rust-resistance concrete according to claim 1, it is characterised in that: the concrete antiseptic agent is sulfate resistance
Preservative.
9. corrosion-prevention rust-resistance concrete according to claim 1, it is characterised in that: the flyash is I grades of selection by winnowing flyash,
The miberal powder is S95 miberal powder.
10. a kind of application of described in any item corrosion-prevention rust-resistance concrete of claim 1-9 in bored concrete pile.
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| CN201910043345.8A CN109704675B (en) | 2019-01-17 | 2019-01-17 | Anti-corrosion and anti-rust concrete and application thereof |
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| CN110981301A (en) * | 2019-12-03 | 2020-04-10 | 青岛兴业商砼有限公司 | Anti-corrosion and anti-rust concrete and preparation method thereof |
| CN110981306A (en) * | 2019-12-17 | 2020-04-10 | 广东省水利水电第三工程局有限公司 | Concrete for cast-in-place pile and preparation method thereof |
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| CN109704675B (en) | 2022-02-25 |
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Address after: 518000 4th floor, dachanwan wharf building, houye community, Xixiang street, Bao'an District, Shenzhen, Guangdong Patentee after: Shenzhen Lijian New Material Co.,Ltd. Address before: 518000 4th floor, dachanwan wharf building, houye community, Xixiang street, Bao'an District, Shenzhen, Guangdong Patentee before: Shenzhen Lijian Concrete Co.,Ltd. |