CN109956711A - A kind of preparation method of high strength anti-corrosion concrete and its prefabricated components - Google Patents
A kind of preparation method of high strength anti-corrosion concrete and its prefabricated components Download PDFInfo
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- CN109956711A CN109956711A CN201910276362.6A CN201910276362A CN109956711A CN 109956711 A CN109956711 A CN 109956711A CN 201910276362 A CN201910276362 A CN 201910276362A CN 109956711 A CN109956711 A CN 109956711A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
- B28B7/364—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article of plastic material or rubber
-
- 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
-
- 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
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention proposes a kind of high strength anti-corrosion concrete, raw material including following parts by weight: 55~65 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon, 20 parts of slag micropowder, 1~5 part of argininosuccinic acid disodium, 8 parts of ardealite, 100~120 parts of desalted sea sand, 25 parts of antirust steel fibre, polycarboxylic acids, which subtracts, to desalinize seawater 3 parts of agent, desalinizes seawater 15~20 parts.The present invention also proposes the preparation method using above-mentioned high strength anti-corrosion concrete prefabricated element, the preparation including mold, the configuration of concrete, the construction of reinforcing rib, the maintenance of concrete prefabricated element.High strength anti-corrosion concrete of the invention and its prefabricated components, intensity is high, and mechanical property is good, has excellent corrosion resistance.
Description
Technical field
The present invention relates to the field of building materials, a kind of high strength anti-corrosion concrete and its prefabricated components are concretely related to
Preparation method.
Background technique
With the construction of the large-scale infrastructure in China, especially coastal area fast development causes job facilities to be built
Increasingly increase.At this stage, the invention of a large amount of concrete prefabricated elements not only increases construction quality and rate, and realizes to working as
The protection of ground ecological environment becomes the important component of green building, receives the favor of government and enterprise.But current
Normal concrete prefabricated components have that intensity is not high, from it is great and not corrosion-resistant the disadvantages of, hinder it and promote on a large scale.Though
So take many measures at present to improve this variety of problems, such as: by burying framework of steel reinforcement in concrete prefabricated element,
It solves the problems, such as that concrete prefabricated element intensity is low, but causes the increase of its self weight on the other hand, and significantly mention
High cost promotes this emerging so being badly in need of a kind of novel high-strength corrosion resistant concrete prefabricated components to improve current status
The further development of industry.
Summary of the invention
To solve the above problems, the present invention proposes the preparation method of a kind of high strength anti-corrosion concrete and its prefabricated components, it is high
The intensity of strong corrosion resistant concrete and its prefabricated components is high, and mechanical property is good, has excellent corrosion resistance.
Technical solution: the present invention proposes a kind of high strength anti-corrosion concrete, the raw material including following parts by weight: cement 55~65
Part, 17 parts of silicon ash, 18 parts of glass microballoon, 20 parts of slag micropowder, 1~5 part of argininosuccinic acid disodium, 8 parts of ardealite, desalted sea sand
100~120 parts, 25 parts of antirust steel fibre, polycarboxylic acids, which subtracts, to desalinize seawater 3 parts of agent, desalinizes seawater 15~20 parts.
Further, the silicon ash is superfine silicon dioxide micro mist.
Further, the desalted sea sand obtains the sea sand that partial size is less than 5mm by screening, then carries out at further purification
Reason, so that clay content is less than 1.0%, mica content is less than 1.0%.
Further, the diameter of the antirust steel fibre is 0.1~0.3 millimeter, and length is 10~15 millimeters.
A kind of preparation method of high strength anti-corrosion concrete prefabricated element, comprising the following steps:
S1, assembled mold, and cleaning treatment is carried out to mold, guarantee that its surface is completely smooth, then pour to mold
It paints and confirms the smooth fastening in mold stitching portion；The mold is the pvc pipe of zigzag fashion；
S2, by 55~65 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon, 20 parts of slag micropowder, argininosuccinic acid disodium 1
~5 parts and 100~120 parts of desalted sea sand, which are added in forced mixer, to stir evenly, and adds 8 parts of ardealite, polycarboxylic acids
Subtract desalinize seawater 3 parts of agent and 15~20 parts of stirrings that desalinize seawater, is eventually adding 25 parts of antirust steel fibre and is evenly stirred until that regulation is collapsed
Degree is fallen into, the high strength anti-corrosion concrete material is obtained；
S3, several bars are passed through into mold, as longitudinal stress muscle, and reinforcing bar periphery is tied up with FRP stirrup, finally
High strength anti-corrosion concrete material is poured into mold, closely knit processing is carried out and scrapes flat surface；
S4, the steam curing that certain condition is carried out to high strength anti-corrosion concrete material remove mould after concrete consolidation molding
Tool；
S5, the processing that desalinizes seawater is cleaned, polished and prevented to high strength anti-corrosion concrete surface, cut later,
Obtain concrete prefabricated element semi-finished product；
S6, using box beam steaming process, concrete prefabricated element semi-finished product are placed in 45 DEG C of box beam and are conserved for 24 hours, wherein
Heating and cooling rate must not exceed 10 DEG C/h, carry out spilling to desalinize seawater after steam curing conserving 3d.
The utility model has the advantages that one, silicon ash and slag micropowder can effectively consolidate chloride ion, the function of resistance rust is realized, and can be filled
Gap between sea sand and cement keeps the structure of concrete main body more closely knit；Two, argininosuccinic acid disodium can be in bar list
Face forms one layer of adsorbed film and free chloride ion concentration and diffusion velocity can be effectively reduced, and the galvanic corrosion current potential of reinforcing bar can be made to have not
With shuffling for degree, the electrochemical corrosion of reinforcing bar, and the pore that its energy fill concrete generates effectively are prevented, effectively
Prevent the intrusion of harmful substance；Three, box girder steam curing makes concrete be rapidly achieved scheduled mechanics and workability and poly- carboxylic
Acid, which subtracts the agent that desalinizes seawater and is able to achieve the high-efficient alkali ability that desalinizes seawater, so that concrete component is more closely knit improves mechanical property
With resistance rust ability；Four, ardealite is cement expansive material, can effectively improve concrete and is opened caused by shrinkage or drying shrinkage
Problem is split, and makes concrete component more closely knit, reduces gap；Five, the addition of steel fibre also can be further improved coagulation
The mechanical property of soil；Six, the concrete component of zigzag fashion stress when bearing longitudinal load is released, and improves carrying energy
Power；Seven, the utilization of sea sand and seawater enables the present invention to be widely used in coastal area, and can reduce the use of reinforcing bar,
Construction weight and cost are further mitigated, the requirement of various infrastructure constructions is met.
Detailed description of the invention
Fig. 1 is the normal section schematic diagram of high strength anti-corrosion concrete prefabricated element of the invention；
Fig. 2 is the schematic cross-section of square high strength anti-corrosion concrete prefabricated element of the invention；
Fig. 3 is the schematic cross-section of round high strength anti-corrosion concrete prefabricated element of the invention.
In figure: 1- mold；2- high strength anti-corrosion concrete material；3- reinforcing bar；4-FRP stirrup.
Specific embodiment
The present invention proposes a kind of high strength anti-corrosion concrete, the raw material including following parts by weight: 55~65 parts of cement, silicon ash 17
Part, 18 parts of glass microballoon, 20 parts of slag micropowder, 1~5 part of argininosuccinic acid disodium, 8 parts of ardealite, desalted sea sand 100~120
Part, 25 parts of antirust steel fibre, polycarboxylic acids, which subtracts, to desalinize seawater 3 parts of agent, desalinizes seawater 15~20 parts.
The silicon ash is superfine silicon dioxide micro mist.
The desalted sea sand obtains the sea sand that partial size is less than 5mm by screening, then carries out further purified treatment, so that
Clay content is less than 1.0%, and mica content is less than 1.0%.
The diameter of the antirust steel fibre is 0.1~0.3 millimeter, and length is 10~15 millimeters.
The argininosuccinic acid disodium can be extracted by animal's liver, be environmentally friendly corrosion inhibitor, environmentally protective, energy
The concentration and diffusion velocity of free chloride ion is effectively reduced, effectively slows down the corrosion of reinforcing bar.
A kind of preparation method of high strength anti-corrosion concrete prefabricated element as shown in Figure 1, comprising the following steps:
S1, assembled mold 1, and cleaning treatment is carried out to mold 1, guarantee that its surface is completely smooth, then pour mold 1
It builds paint and confirms the smooth fastening in mold stitching portion；The mold 1 is the pvc pipe of zigzag fashion, the concrete of zigzag fashion
Component stress when bearing longitudinal load is released, therefore its bearing capacity is 2 times of normal concrete or so, and can be saved
Concrete amount reduces cost；PVC material has preferable tension, resistance to compression, bending resistance and corrosion resistance, can be effectively protected mixed
Corroded during solidifying earth forming, and can effectively improve the ductility of concrete.
S2, by 55~65 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon, 20 parts of slag micropowder, argininosuccinic acid disodium 1
~5 parts and 100~120 parts of desalted sea sand, which are added in forced mixer, to stir evenly, and adds 8 parts of ardealite, polycarboxylic acids
Subtract desalinize seawater 3 parts of agent and 15~20 parts of stirrings that desalinize seawater, is eventually adding 25 parts of antirust steel fibre and is evenly stirred until that regulation is collapsed
Degree is fallen into, the high strength anti-corrosion concrete material 2 is obtained.
S3, several bars 3 are passed through into mold 1, as longitudinal stress muscle, and reinforcing bar periphery is tied up with FRP stirrup 4,
Finally high strength anti-corrosion concrete material 2 is poured into mold, carry out closely knit processing and scrapes flat surface；4 light weight of FRP stirrup,
Tensile strength is high, material cohesive force is strong, and has good durability in chloride ion.
S4, the steam curing that certain condition is carried out to high strength anti-corrosion concrete material 2 remove mould after concrete consolidation molding
Tool 1.
S5, the processing that desalinizes seawater is cleaned, polished and prevented to high strength anti-corrosion concrete surface, cut later,
Obtain concrete prefabricated element semi-finished product.
S6, using box beam steaming process, concrete prefabricated element semi-finished product are placed in 45 DEG C of box beam and are conserved for 24 hours, wherein
Heating and cooling rate must not exceed 10 DEG C/h, carry out spilling to desalinize seawater after steam curing conserving 3d.
As shown in Figure 2,3, high strength anti-corrosion concrete prefabricated element section of the invention can be made into square, it is round or its
Shape needed for it is suitble to various buildings.
The present invention is as follows to the mechanical property of concrete prefabricated element and its test method of corrosion resistance:
Solidifying soil prefabricated components compression strength, flexural strength and axial compressive strength experimental evidence " normal concrete mechanics
Method for testing performance standard " (GB/T 50081-2002) progress.
Concrete prefabricated element 28 days indoor accelerated carbonation depth experimental evidence " normal concrete long-term behaviour and durabilities
Energy test method standard " (GB/T 50082-2009) progress, accelerated carbonation test CO2Concentration is (20 ± 3) %, and temperature is (20
± 2) DEG C, humidity is (70 ± 5) %, and test cuts the component after carbonization along carbonization developing direction after carrying out 28 days from centre,
The part of excision gained component scrapes off powder remaining on truncation surface, sprays the phenolphthalein alcoholic solution that concentration is 1% immediately and (contains
20% distilled water), measure the carbonation depth of each measurement point after 30 seconds respectively with Steel Ruler by the measurement point originally delineated.
The experimental study of concrete prefabricated element anti-permeability performance grade referring to national standard " normal concrete long-term behaviour and
Durability test method " (GBJ82-85) test concrete seepage-resistant grade, test use 6 standard concrete components, from
0.1MPa starts to apply hydraulic pressure, increases 0.1MPa every 8h hydraulic pressure, until have in 6 components 3 by pressure penetration by water or pressurization
Stop test when to 3.1MPa, record hydraulic pressure simultaneously calculates seepage-resistant grade.For the chlorine ion binding capacity system for measuring concrete prefabricated element
Component need to be put into the RCM type Chloride Diffusion Coefficient in Concrete analyzer device for vacuumizing (- 0.08MPa) and take out very by number
Empty (air of inside concrete is extracted out), injects the NaCl solution of 4mol/L, continues to take out after taking out 2 hours after four hours, will
Component is encased in the electrode of measurement device, and into Auto-Test System, taking the average value tested twice is last result.
The short-term corrosion test method of precast member for reinforcing bar concrete is that component is placed on manual simulation's seawater alternation of wetting and drying
Fast erosion environment in, soaking solution be 6% sodium chloride solution, baking temperature be 60 DEG C, impregnate salt water and drying alternating
Circulation, experiment measure the weight-loss ratio after steel bar corrosion afterwards three times.
The alternating temperature freezing and thawing test of precast member for reinforcing bar concrete, as raw material are freezed, component is placed using liquid nitrogen
In the container with insulating layer, in addition insulation cover, reserves a small cavity and liquid nitrogen is added, freeze that a certain amount of liquid of liquid is added every time
Nitrogen, entire freezing process are completed in 15 to 20 minutes, rear part dried 30 minutes in 90 DEG C of baking ovens again, then be placed in room
Melt within interior 2 hours, component, which completes a Frozen-thawed cycled, to be needed about 3 hours, and the mass loss of component is measured after 200 Frozen-thawed cycleds
Rate.
Embodiment one
High strength anti-corrosion concrete material includes the raw material of following parts by weight: 60 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon,
20 parts of slag micropowder, 3 parts of argininosuccinic acid disodium, 8 parts of ardealite, 120 parts of desalted sea sand, 25 parts of antirust steel fibre, polycarboxylic acids
Subtract 3 parts of the agent that desalinizes seawater, desalinize seawater 20 parts.
By the preparation method of above-mentioned concrete prefabricated element, the raw material of above-mentioned parts by weight is taken to be prepared into the prefabricated structure of concrete
Part is tested according to above-mentioned test method, and mechanical property and its corrosion resistance test data are as follows:
| Experiment content | Experimental data |
| Compression strength | 193Mpa |
| Flexural strength | 26Mpa |
| Axial compressive strength | 140Mpa |
| 28 days indoor accelerated carbonation depth | 1.1mm |
| Anti-permeability performance grade | P10 |
| Chloride diffusion coefficient | 2.96×10-9cm2/s |
| Steel bar corrosion weight-loss ratio after fast erosion 3 times | 0.03% |
| 200 alternating temperature freezing and thawing test mass loss rates | 0.3% |
Embodiment two
High strength anti-corrosion concrete material includes the raw material of following parts by weight: 60 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon,
20 parts of slag micropowder, 1 part of argininosuccinic acid disodium, 8 parts of ardealite, 120 parts of desalted sea sand, 25 parts of antirust steel fibre, polycarboxylic acids
Subtract 3 parts of the agent that desalinizes seawater, desalinize seawater 20 parts.
By the preparation method of above-mentioned concrete prefabricated element, the raw material of above-mentioned parts by weight is taken to be prepared into the prefabricated structure of concrete
Part is tested according to above-mentioned test method, and mechanical property and its corrosion resistance test data are as follows:
| Experiment content | Experimental data |
| Compression strength | 191Mpa |
| Flexural strength | 26Mpa |
| Axial compressive strength | 134Mpa |
| 28 days indoor accelerated carbonation depth | 1.5mm |
| Anti-permeability performance grade | P10 |
| Chloride diffusion coefficient | 4.19×10-9cm2/s |
| Steel bar corrosion weight-loss ratio after fast erosion 3 times | 0.10% |
| 200 alternating temperature freezing and thawing test mass loss rates | 0.6% |
Embodiment three
High strength anti-corrosion concrete material includes the raw material of following parts by weight: 60 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon,
20 parts of slag micropowder, 5 parts of argininosuccinic acid disodium, 8 parts of ardealite, 120 parts of desalted sea sand, 25 parts of antirust steel fibre, polycarboxylic acids
Subtract 3 parts of the agent that desalinizes seawater, desalinize seawater 20 parts.
By the preparation method of above-mentioned concrete prefabricated element, the raw material of above-mentioned parts by weight is taken to be prepared into the prefabricated structure of concrete
Part is tested according to above-mentioned test method, and mechanical property and its corrosion resistance test data are as follows:
| Experiment content | Experimental data |
| Compression strength | 183Mpa |
| Flexural strength | 27Mpa |
| Axial compressive strength | 135Mpa |
| 28 days indoor accelerated carbonation depth | 0.8mm |
| Anti-permeability performance grade | P10 |
| Chloride diffusion coefficient | 1.51×10-9cm2/s |
| Steel bar corrosion weight-loss ratio after fast erosion 3 times | 0.02% |
| 200 alternating temperature freezing and thawing test mass loss rates | 0.3% |
Example IV
High strength anti-corrosion concrete material includes the raw material of following parts by weight: 55 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon,
20 parts of slag micropowder, 3 parts of argininosuccinic acid disodium, 8 parts of ardealite, 120 parts of desalted sea sand, 25 parts of antirust steel fibre, polycarboxylic acids
Subtract 3 parts of the agent that desalinizes seawater, desalinize seawater 20 parts.
By the preparation method of above-mentioned concrete prefabricated element, the raw material of above-mentioned parts by weight is taken to be prepared into the prefabricated structure of concrete
Part is tested according to above-mentioned test method, and mechanical property and its corrosion resistance test data are as follows:
| Experiment content | Experimental data |
| Compression strength | 169Mpa |
| Flexural strength | 23Mpa |
| Axial compressive strength | 118Mpa |
| 28 days indoor accelerated carbonation depth | 1.4mm |
| Anti-permeability performance grade | P8 |
| Chloride diffusion coefficient | 2.99×10-9cm2/s |
| Steel bar corrosion weight-loss ratio after fast erosion 3 times | 0.04% |
| 200 alternating temperature freezing and thawing test mass loss rates | 0.4% |
Embodiment five
High strength anti-corrosion concrete material includes the raw material of following parts by weight: 65 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon,
20 parts of slag micropowder, 3 parts of argininosuccinic acid disodium, 8 parts of ardealite, 120 parts of desalted sea sand, 25 parts of antirust steel fibre, polycarboxylic acids
Subtract 3 parts of the agent that desalinizes seawater, desalinize seawater 20 parts.
By the preparation method of above-mentioned concrete prefabricated element, the raw material of above-mentioned parts by weight is taken to be prepared into the prefabricated structure of concrete
Part is tested according to above-mentioned test method, and mechanical property and its corrosion resistance test data are as follows:
Embodiment six
High strength anti-corrosion concrete material includes the raw material of following parts by weight: 60 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon,
20 parts of slag micropowder, 3 parts of argininosuccinic acid disodium, 8 parts of ardealite, 100 parts of desalted sea sand, 25 parts of antirust steel fibre, polycarboxylic acids
Subtract 3 parts of the agent that desalinizes seawater, desalinize seawater 20 parts.
By the preparation method of above-mentioned concrete prefabricated element, the raw material of above-mentioned parts by weight is taken to be prepared into the prefabricated structure of concrete
Part is tested according to above-mentioned test method, and mechanical property and its corrosion resistance test data are as follows:
| Experiment content | Experimental data |
| Compression strength | 179Mpa |
| Flexural strength | 26Mpa |
| Axial compressive strength | 130Mpa |
| 28 days indoor accelerated carbonation depth | 1.2mm |
| Anti-permeability performance grade | P10 |
| Chloride diffusion coefficient | 2.65×10-9cm2/s |
| Steel bar corrosion weight-loss ratio after fast erosion 3 times | 0.04% |
| 200 alternating temperature freezing and thawing test mass loss rates | 0.4% |
Embodiment seven
High strength anti-corrosion concrete material includes the raw material of following parts by weight: 60 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon,
20 parts of slag micropowder, 3 parts of argininosuccinic acid disodium, 8 parts of ardealite, 120 parts of desalted sea sand, 25 parts of antirust steel fibre, polycarboxylic acids
Subtract 3 parts of the agent that desalinizes seawater, desalinize seawater 15 parts.
By the preparation method of above-mentioned concrete prefabricated element, the raw material of above-mentioned parts by weight is taken to be prepared into the prefabricated structure of concrete
Part is tested according to above-mentioned test method, and mechanical property and its corrosion resistance test data are as follows:
By the test data of above-described embodiment it is found that the mechanical property of high strength anti-corrosion concrete prefabricated element of the invention is excellent
Different and corrosion resistance is fine, is suitble to promote the use of.The present invention has the reason of above-mentioned technical effect and is: one, silicon ash and slag are micro-
Powder can effectively consolidate chloride ion, realize the function of resistance rust, and can fill the gap between sea sand and cement, make concrete main body
Structure it is more closely knit.
Two, argininosuccinic acid disodium can form one layer of adsorbed film in rebar surface and free chloride ion to be effectively reduced dense
Degree and diffusion velocity, can make the galvanic corrosion current potential of reinforcing bar have it is different degrees of shuffle, effectively prevent the electrochemistry of reinforcing bar rotten
Erosion, and the pore that its energy fill concrete generates, effectively prevent the intrusion of harmful substance.By embodiment 1-3 as it can be seen that its
Remaining component is constant, only changes the accounting of argininosuccinic acid disodium, when argininosuccinic acid disodium is 3 parts, chloride diffusion coefficient is
2.96×10-9cm2/s；When argininosuccinic acid disodium is 1 part, chloride diffusion coefficient is 4.19 × 10-9cm2/s；Smart ammonia amber
When acid disodium is 5 parts, chloride diffusion coefficient is 1.51 × 10-9cm2/s.It can be seen that argininosuccinic acid disodium can effectively drop
Low free chloride ion concentration and diffusion velocity.
Three, box girder steam curing makes that concrete is rapidly achieved scheduled mechanics and workability and polycarboxylic acids subtracts the agent that desalinizes seawater
It is able to achieve high-efficient alkali to desalinize seawater ability, so that concrete component is more closely knit, improves mechanical property and resistance rust ability.
Four, ardealite is cement expansive material, can effectively improve concrete cracking caused by shrinkage or drying shrinkage
Problem, and make concrete component more closely knit, reduce gap.
Five, the addition of steel fibre also can be further improved the mechanical property of concrete.
Six, the concrete component of zigzag fashion stress when bearing longitudinal load is released, and improves bearing capacity.
The utilization of another aspect sea sand and seawater enables the present invention to be widely used in coastal area, and can reduce steel
The use of muscle, further mitigates construction weight and cost, meets the requirement of various infrastructure constructions.
Claims (7)
1. a kind of high strength anti-corrosion concrete, which is characterized in that the raw material including following parts by weight: 55~65 parts of cement, silicon ash 17
Part, 18 parts of glass microballoon, 20 parts of slag micropowder, 1~5 part of argininosuccinic acid disodium, 8 parts of ardealite, desalted sea sand 100~120
Part, 25 parts of antirust steel fibre, polycarboxylic acids, which subtracts, to desalinize seawater 3 parts of agent, desalinizes seawater 15~20 parts.
2. high strength anti-corrosion concrete according to claim 1, it is characterised in that: the silicon ash is that superfine silicon dioxide is micro-
Powder.
3. high strength anti-corrosion concrete according to claim 1, it is characterised in that: the desalted sea sand obtains grain by screening
Diameter is less than the sea sand of 5mm, then carries out further purified treatment, so that clay content is less than 1.0%, mica content is less than 1.0%.
4. high strength anti-corrosion concrete according to claim 1, it is characterised in that: the diameter of the antirust steel fibre is 0.1
~0.3 millimeter, length is 10~15 millimeters.
5. a kind of preparation method of high strength anti-corrosion concrete prefabricated element, which comprises the following steps:
S1, assembled mold (1), and mold (1) is pre-processed；
S2, by 55~65 parts of cement, 17 parts of silicon ash, 18 parts of glass microballoon, 20 parts of slag micropowder, 1~5 part of argininosuccinic acid disodium
It is added in forced mixer and stirs evenly with 100~120 parts of desalted sea sand, add 8 parts of ardealite, polycarboxylic acids subtracts desalination
3 parts of seawater agent and 15~20 parts of stirrings that desalinize seawater, are eventually adding 25 parts of antirust steel fibre and are evenly stirred until regulation degree of collapsing, obtain
To the high strength anti-corrosion concrete material (2)；
S3, several bars (3) are passed through into mold (1), as longitudinal stress muscle, and regular reinforcement periphery is carried out with FRP stirrup (4)
It ties up, finally pours into high strength anti-corrosion concrete material (2) in mold, carry out closely knit processing and scrape flat surface；
S4, the steam curing that high strength anti-corrosion concrete material (2) are carried out with certain condition remove mold after concrete consolidation molding
(1)；
S5, the processing that desalinizes seawater is cleaned, polished and prevented to high strength anti-corrosion concrete surface, cut later, obtained
Concrete prefabricated element semi-finished product；
S6, using box beam steaming process, concrete prefabricated element semi-finished product are placed in 45 DEG C of box beam and are conserved for 24 hours, wherein heating up
It must not exceed 10 DEG C/h with cooling rate, carry out spilling to desalinize seawater after steam curing conserving 3d.
6. a kind of preparation method of high strength anti-corrosion concrete prefabricated element according to claim 5, it is characterised in that: step
Mold described in S1 (1) is the pvc pipe of zigzag fashion.
7. a kind of preparation method of high strength anti-corrosion concrete prefabricated element according to claim 5, it is characterised in that: step
S1 pre-processes mold (1), is to carry out cleaning treatment to mold (1), guarantees that its surface is completely smooth, then to mold (1)
It carries out pouring paint and confirms the smooth fastening in mold stitching portion.
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