CN108793884A - A kind of infiltration crystallization type concrete of precenting chlorate corrosion - Google Patents
A kind of infiltration crystallization type concrete of precenting chlorate corrosion Download PDFInfo
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- CN108793884A CN108793884A CN201810818051.3A CN201810818051A CN108793884A CN 108793884 A CN108793884 A CN 108793884A CN 201810818051 A CN201810818051 A CN 201810818051A CN 108793884 A CN108793884 A CN 108793884A
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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
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- 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
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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
- 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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Abstract
The invention discloses a kind of infiltration crystallization type concretes of precenting chlorate corrosion, and by weight, raw material includes following components：120-130 parts of cement, 55-65 parts of flyash, 332-359 parts of fine aggregate, 500-560 parts of coarse aggregate, 50.5-59.5 parts of water, 0.25-0.55 parts of cellulose fibre, 3.3-3.48 parts of water-reducing agent, 22.5-27 parts of swelling agent, 1.5-3.5 parts of penetrant crystalline material.The present invention can prepare the concrete that strength grade is C40, the cellulose fiber peacekeeping penetrant crystalline material added is while ensureing concrete basic mechanical performance, the precenting chlorate corrosion ability of concrete, 28d unstable state chloride ion transport coefficients D can significantly be promotedRCM≤17.4×10‑13m2/s。
Description
Technical field
The present invention relates to building material fields, and in particular to a kind of to promote precenting chlorate corrosion performance by fiber reinforcement
Infiltration crystallization type concrete.
Background technology
Largely studies have shown that the destruction of most concrete structures is since chlorion invades concrete to bar list
Face causes steel bar corrosion expansion and protective layer cracking, eventually leads to the decline of structure integral working, and the entirety for causing structure is broken
It is bad.Especially for building structure under coastal environments is in, chloride ion content is higher, invades concrete and leads to armored concrete
The case where structure is destroyed is fairly common.China coast concrete steel building occurs different for 20 years or so generally after building up
The corrosion and destruction of degree, safety that is serious or even jeopardizing building, repair and economic loss caused by due to repairing halt production are frightened
People, current many scholars think Chloride Attack destroy concrete have become concrete structure durability failure it is primary because
Element.
Cement-base infiltration crystallization material is a kind of novel rigid waterproof material, and active chemistry therein can penetrate into
Inside concrete reacts with unhydrated cement granules, generates insoluble crystalline material, be filled in distress in concrete or
In gap, plays the role of air-free concrete, improves intensity, improve the performance of concrete, extend its service life, carried in engineering
The mechanical property of high concrete and the impervious common additive of anti-erosion endurance quality.
It is the means that concrete performance is commonly improved in engineering that fiber is added in concrete, and the addition of fiber can change
Kind concrete is in intensity, durability etc. performance.Cellulose fibre is new and high technology material of new generation, have elasticity modulus compared with
High, easy the advantages that disperseing and is good with concrete bond performance.At present about cellulose fibre concrete early anti-cracking behavior and anti-
The research of performance is oozed it has been reported that but being studied the improvement aspect of performance based on its superior structural and the interaction of other additives
It is less.
Invention content
The technical problem to be solved by the present invention is in view of the above shortcomings of the prior art, provide a kind of method to ensure coagulation
Under native basic mechanical performance, make up in the case where singly mixing cellulose fibre or penetrant crystalline material to concrete chlorine salt resistant erosiveness
Nothing significantly improves or raising effect unobvious, gives full play to the reciprocation under cellulose fiber peacekeeping penetrant crystalline material is mixed again,
Promote the ability that concrete chlorine salt resistant corrodes.
The present invention is realized using following scheme：
A kind of infiltration crystallization type concrete of precenting chlorate corrosion, which is characterized in that by weight, the concrete include with
Lower component：120-130 parts of cement, 55-65 parts of flyash, 332-359 parts of fine aggregate, 500-560 parts of coarse aggregate, water 50.5-
59.5 parts, 0.25-0.55 parts of cellulose fibre, 3.3-3.48 parts of water-reducing agent, 22.5-27 parts of swelling agent, penetrant crystalline material
1.5-3.5 part.
Further, the cement is PO42.5R class g cements, is selected good with poly carboxylic acid series water reducer compatibility
Cement type.
Further, the flyash is the high-quality I grades of flyash of power plant, and 45 μm of square hole screens tail over≤12%, need water
Ratio≤95% is measured, specific surface area is more than 400m2/kg。
Further, the fine aggregate is sand in continuous grading, fineness modulus 2.8-3.0.
Further, the coarse aggregate is the artificial rubble based on lime stone, and grain size is 5mm-15mm.
Further, the length of the cellulose fibre be 2-3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa,
Tensile strength is 800-900MPa, and fracture elongation reaches 10%, proportion 1.1g/m3。
Further, the water-reducing agent is polycarboxylate superplasticizer mother liquor.
Further, the solid content of the polycarboxylate superplasticizer mother liquor is 40wt%, water-reducing rate >=25%.
Further, the swelling agent is calcium sulphoaluminate-calcium oxide composite expanding agent.
Further, the penetrant crystalline material is activated silica penetrant crystalline masterbatch.
The prior art is compared, the invention has the advantages that：
1, under the common incorporation of cellulose fiber peacekeeping penetrant crystalline material, concrete 28d unstable state chloride ion transports system
Number DRCMReduction amplitude is larger, 28d unstable state chloride ion transport coefficients DRCM≤17.4×10-13m2/ s, the i.e. anti-chlorine of concrete
Salt corrosion ability is obviously improved, and the possibility that chloride erosion destruction occurs in practice in engineering is reduced, and at the same time, is mixed
The basic mechanical performance for coagulating soil is also ensured.
2, in the concrete sample of compound incorporation cellulose fiber peacekeeping penetrant crystalline material, the permeable crystallization type of appropriate volume
Material can generate synergistic effect with cellulose fibre, i.e., based on the two special structure and operation principle, cellulose fibre is deposited
It is carried out in the reaction of inside concrete penetrant crystalline material can be conducive to, to further increase concrete chlorine salt resistant aggressivity
Energy.
3, production process of the present invention is simple, can direct plunge into Practical Project.
Specific implementation mode
It to make the objectives, technical solutions, and advantages of the present invention more comprehensible, below will be by specific implementation, to this hair
Bright to be described in further detail, embodiments of the present invention are not limited thereto.
The cubic compressive strength of following gained concrete is according to GB/50081-2002《Normal concrete mechanical property
Test method standard》Experimental test is carried out, the 28d unstable state chloride ion transport coefficients of gained concrete are with quick chlorine below
Ion transport coefficients method (RCM methods) carrys out the anti-chlorine salt penetration performance of overall merit concrete, according to《Normal concrete long-term behaviour
With endurance quality test method》(GB/T 50082-2009) carries out experimental test.
Embodiment 1
A kind of infiltration crystallization type concrete of precenting chlorate corrosion, by weight, which includes following components：Cement
130 parts, 65 parts of flyash, 350 parts of fine aggregate, 550 parts of coarse aggregate, 57 parts of water, 3.3 parts of water-reducing agent, 25 parts of swelling agent, cellulose
0.25 part of fiber, 1.5 parts of penetrant crystalline material.
The cement be and the good PO42.5R class g cements of poly carboxylic acid series water reducer compatibility.The flyash
For the high-quality I grades of flyash of power plant, 45 μm of square hole screens tail over≤12%, and water demand ratio≤95%, specific surface area is more than 400m2/
kg.The fine aggregate is sand in continuous grading, fineness modulus 2.8-3.0.The coarse aggregate is good for grading, densification is hard,
The shaggy artificial rubble based on lime stone, and grain size is in 5mm-15mm ranges.The length of the cellulose fibre is
2-3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa, tensile strength 800-900MPa, fracture elongation reaches
10%, proportion 1.1g/m3.The water-reducing agent is water-reducing rate >=25%, solid content is 40wt% polycarboxylate superplasticizer mother liquors.Institute
The swelling agent stated is calcium sulphoaluminate-calcium oxide composite expanding agent.The penetrant crystalline material is activated silica penetrant crystalline masterbatch,
Main component is high efficiency water reducing agent, early strength agent, active anion catalyst, special cement and quartz sand etc., is matched by a certain percentage
System.
Embodiment 2
A kind of infiltration crystallization type concrete of precenting chlorate corrosion, by weight, which includes following components：Cement
130 parts, 65 parts of flyash, 350 parts of fine aggregate, 550 parts of coarse aggregate, 57 parts of water, 3.3 parts of water-reducing agent, 25 parts of swelling agent, cellulose
0.4 part of fiber, 1.5 parts of penetrant crystalline material.
The cement be and the good PO42.5R class g cements of poly carboxylic acid series water reducer compatibility.The flyash
For the high-quality I grades of flyash of power plant, 45 μm of square hole screens tail over≤12%, and water demand ratio≤95%, specific surface area is more than 400m2/
kg.The fine aggregate is sand in continuous grading, fineness modulus 2.8-3.0.The coarse aggregate is good for grading, densification is hard,
The shaggy artificial rubble based on lime stone, and grain size is in 5mm-15mm ranges.The length of the cellulose fibre is
2-3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa, tensile strength 800-900MPa, fracture elongation reaches
10%, proportion 1.1g/m3.The water-reducing agent is water-reducing rate >=25%, solid content is 40wt% polycarboxylate superplasticizer mother liquors.Institute
The swelling agent stated is calcium sulphoaluminate-calcium oxide composite expanding agent.The penetrant crystalline material is activated silica penetrant crystalline masterbatch,
Main component is high efficiency water reducing agent, early strength agent, active anion catalyst, special cement and quartz sand etc., is matched by a certain percentage
System.
Embodiment 3
A kind of infiltration crystallization type concrete of precenting chlorate corrosion, by weight, which includes following components：Cement
130 parts, 65 parts of flyash, 350 parts of fine aggregate, 550 parts of coarse aggregate, 57 parts of water, 3.3 parts of water-reducing agent, 25 parts of swelling agent, cellulose
0.55 part of fiber, 1.5 parts of penetrant crystalline material.
The cement be and the good PO42.5R class g cements of poly carboxylic acid series water reducer compatibility.The flyash
For the high-quality I grades of flyash of power plant, 45 μm of square hole screens tail over≤12%, and water demand ratio≤95%, specific surface area is more than 400m2/
kg.The fine aggregate is sand in continuous grading, fineness modulus 2.8-3.0.The coarse aggregate is good for grading, densification is hard,
The shaggy artificial rubble based on lime stone, and grain size is in 5mm-15mm ranges.The length of the cellulose fibre is
2-3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa, tensile strength 800-900MPa, fracture elongation reaches
10%, proportion 1.1g/m3.The water-reducing agent be water-reducing rate >=25%, solid content be 40wt% polycarboxylate superplasticizer mother liquors.Institute
The swelling agent stated is calcium sulphoaluminate-calcium oxide composite expanding agent.The penetrant crystalline material is activated silica penetrant crystalline masterbatch,
Main component is high efficiency water reducing agent, early strength agent, active anion catalyst, special cement and quartz sand etc., is matched by a certain percentage
System.
Embodiment 4
A kind of infiltration crystallization type concrete of precenting chlorate corrosion, by weight, which includes following components：Cement
125 parts, 60 parts of flyash, 340 parts of fine aggregate, 540 parts of coarse aggregate, 56 parts of water, 3.3 parts of water-reducing agent, 25 parts of swelling agent, cellulose
0.25 part of fiber, 1.5 parts of penetrant crystalline material.
The cement be and the good PO42.5R class g cements of poly carboxylic acid series water reducer compatibility.The flyash
For the high-quality I grades of flyash of power plant, 45 μm of square hole screens tail over≤12%, and water demand ratio≤95%, specific surface area is more than 400m2/
kg.The fine aggregate is sand in continuous grading, fineness modulus 2.8-3.0.The coarse aggregate is good for grading, densification is hard,
The shaggy artificial rubble based on lime stone, and grain size is in 5mm-15mm ranges.The length of the cellulose fibre is
2-3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa, tensile strength 800-900MPa, fracture elongation reaches
10%, proportion 1.1g/m3.The water-reducing agent be water-reducing rate >=25%, solid content be 40wt% polycarboxylate superplasticizer mother liquors.Institute
The swelling agent stated is calcium sulphoaluminate-calcium oxide composite expanding agent.The penetrant crystalline material is activated silica penetrant crystalline masterbatch,
Main component is high efficiency water reducing agent, early strength agent, active anion catalyst, special cement and quartz sand etc., is matched by a certain percentage
System.
Embodiment 5
A kind of infiltration crystallization type concrete of precenting chlorate corrosion, by weight, which includes following components：Cement
125 parts, 60 parts of flyash, 340 parts of fine aggregate, 540 parts of coarse aggregate, 56 parts of water, 3.3 parts of water-reducing agent, 25 parts of swelling agent, cellulose
0.4 part of fiber, 2.5 parts of penetrant crystalline material.
The cement be and the good PO42.5R class g cements of poly carboxylic acid series water reducer compatibility.The flyash
For the high-quality I grades of flyash of power plant, 45 μm of square hole screens tail over≤12%, and water demand ratio≤95%, specific surface area is more than 400m2/
kg.The fine aggregate is sand in continuous grading, fineness modulus 2.8-3.0.The coarse aggregate is good for grading, densification is hard,
The shaggy artificial rubble based on lime stone, and grain size is in 5mm-15mm ranges.The length of the cellulose fibre is
2-3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa, tensile strength 800-900MPa, fracture elongation reaches
10%, proportion 1.1g/m3.The water-reducing agent be water-reducing rate >=25%, solid content be 40wt% polycarboxylate superplasticizer mother liquors.Institute
The swelling agent stated is calcium sulphoaluminate-calcium oxide composite expanding agent.The penetrant crystalline material is activated silica penetrant crystalline masterbatch,
Main component is high efficiency water reducing agent, early strength agent, active anion catalyst, special cement and quartz sand etc., is matched by a certain percentage
System.
Embodiment 6
A kind of infiltration crystallization type concrete of precenting chlorate corrosion, by weight, which includes following components：Cement
125 parts, 60 parts of flyash, 340 parts of fine aggregate, 540 parts of coarse aggregate, 56 parts of water, 3.3 parts of water-reducing agent, 25 parts of swelling agent, cellulose
0.55 part of fiber, 2.5 parts of penetrant crystalline material.
The cement be and the good PO42.5R class g cements of poly carboxylic acid series water reducer compatibility.The flyash
For the high-quality I grades of flyash of power plant, 45 μm of square hole screens tail over≤12%, and water demand ratio≤95%, specific surface area is more than 400m2/
kg.The fine aggregate is sand in continuous grading, fineness modulus 2.8-3.0.The coarse aggregate is good for grading, densification is hard,
The shaggy artificial rubble based on lime stone, and grain size is in 5mm-15mm ranges.The length of the cellulose fibre is
2-3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa, tensile strength 800-900MPa, fracture elongation reaches
10%, proportion 1.1g/m3.The water-reducing agent be water-reducing rate >=25%, solid content be 40wt% polycarboxylate superplasticizer mother liquors.Institute
The swelling agent stated is calcium sulphoaluminate-calcium oxide composite expanding agent.The penetrant crystalline material is activated silica penetrant crystalline masterbatch,
Main component is high efficiency water reducing agent, early strength agent, active anion catalyst, special cement and quartz sand etc., is matched by a certain percentage
System.
Embodiment 7
A kind of infiltration crystallization type concrete of precenting chlorate corrosion, by weight, which includes following components：Cement
120 parts, 55 parts of flyash, 335 parts of fine aggregate, 530 parts of coarse aggregate, 55 parts of water, 3.3 parts of water-reducing agent, 25 parts of swelling agent, cellulose
0.25 part of fiber, 3.5 parts of penetrant crystalline material.
The cement be and the good PO42.5R class g cements of poly carboxylic acid series water reducer compatibility.The flyash
For the high-quality I grades of flyash of power plant, 45 μm of square hole screens tail over≤12%, and water demand ratio≤95%, specific surface area is more than 400m2/
kg.The fine aggregate is sand in continuous grading, fineness modulus 2.8-3.0.The coarse aggregate is good for grading, densification is hard,
The shaggy artificial rubble based on lime stone, and grain size is in 5mm-15mm ranges.The length of the cellulose fibre is
2-3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa, tensile strength 800-900MPa, fracture elongation reaches
10%, proportion 1.1g/m3.The water-reducing agent be water-reducing rate >=25%, solid content be 40wt% polycarboxylate superplasticizer mother liquors.Institute
The swelling agent stated is calcium sulphoaluminate-calcium oxide composite expanding agent.The penetrant crystalline material is activated silica penetrant crystalline masterbatch,
Main component is high efficiency water reducing agent, early strength agent, active anion catalyst, special cement and quartz sand etc., is matched by a certain percentage
System.
Embodiment 8
A kind of infiltration crystallization type concrete of precenting chlorate corrosion, by weight, which includes following components：Cement
120 parts, 55 parts of flyash, 335 parts of fine aggregate, 530 parts of coarse aggregate, 55 parts of water, 3.3 parts of water-reducing agent, 25 parts of swelling agent, cellulose
0.4 part of fiber, 3.5 parts of penetrant crystalline material.
The cement be and the good PO42.5R class g cements of poly carboxylic acid series water reducer compatibility.The flyash
For the high-quality I grades of flyash of power plant, 45 μm of square hole screens tail over≤12%, and water demand ratio≤95%, specific surface area is more than 400m2/
kg.The fine aggregate is sand in continuous grading, fineness modulus 2.8-3.0.The coarse aggregate is good for grading, densification is hard,
The shaggy artificial rubble based on lime stone, and grain size is in 5mm-15mm ranges.The length of the cellulose fibre is
2-3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa, tensile strength 800-900MPa, fracture elongation reaches
10%, proportion 1.1g/m3.The water-reducing agent be water-reducing rate >=25%, solid content be 40wt% polycarboxylate superplasticizer mother liquors.Institute
The swelling agent stated is calcium sulphoaluminate-calcium oxide composite expanding agent.The penetrant crystalline material is activated silica penetrant crystalline masterbatch,
Main component is high efficiency water reducing agent, early strength agent, active anion catalyst, special cement and quartz sand etc., is matched by a certain percentage
System.
Embodiment 9
A kind of infiltration crystallization type concrete of precenting chlorate corrosion, by weight, which includes following components：Cement
120 parts, 55 parts of flyash, 335 parts of fine aggregate, 530 parts of coarse aggregate, 55 parts of water, 3.4 parts of water-reducing agent, 25 parts of swelling agent, cellulose
0.55 part of fiber, 3.5 parts of penetrant crystalline material.
The cement be and the good PO42.5R class g cements of poly carboxylic acid series water reducer compatibility.The flyash
For the high-quality I grades of flyash of power plant, 45 μm of square hole screens tail over≤12%, and water demand ratio≤95%, specific surface area is more than 400m2/
kg.The fine aggregate is sand in continuous grading, fineness modulus 2.8-3.0.The coarse aggregate is good for grading, densification is hard,
The shaggy artificial rubble based on lime stone, and grain size is in 5mm-15mm ranges.The cellulosic fiber lengths are 2-
3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa, tensile strength 800-900MPa, fracture elongation reaches 10%,
Proportion is 1.1g/m3.The water-reducing agent be water-reducing rate >=25%, solid content be 40wt% polycarboxylate superplasticizer mother liquors.Described
Swelling agent is calcium sulphoaluminate-calcium oxide composite expanding agent.The penetrant crystalline material is activated silica penetrant crystalline masterbatch, mainly
Ingredient is high efficiency water reducing agent, early strength agent, active anion catalyst, special cement and quartz sand etc., is prepared by a certain percentage.
While being tested for the property to case study on implementation 1-9, the performance detection of identical content is carried out to blank group test specimen,
Including compressive strength of concrete and RCM osmotic coefficient investigatings.Wherein, each group distribution ratio of blank group, except not adding fibre
It is same as Example 1 outside cellulose fiber and penetrant crystalline material, i.e. 120 parts of cement, 55 parts of flyash, 335 parts of fine aggregate, thick bone
530 parts of material, 55 parts of water, 3.4 parts of water-reducing agent, 25 parts of swelling agent.The result of performance detection is summarized as shown in table 1；Use SPSS
Software is to 28d unstable state chloride ion transport coefficients DRCMCarry out variance analysis, judge penetrant crystalline material and cellulose fibre for
28d unstable state chloride ion transport coefficients DRCMInfluence size, and verify cellulose fiber peacekeeping infiltration and crystalline material it
Between the existing reciprocation to concrete chlorine salt resistant erosion performance, the results are shown in Table 2.
Table 1：The performance test of case study on implementation 1-9 and blank group
Table 1
| Case study on implementation | Axial compressive strength (N/mm2) | DRCM(×10-13m2/s) |
| Blank group | 36.3 | 83.452 |
| Case study on implementation 1 | 33.7 | 17.380 |
| Case study on implementation 2 | 34.5 | 15.208 |
| Case study on implementation 3 | 35.8 | 13.420 |
| Case study on implementation 4 | 40.2 | 10.817 |
| Case study on implementation 5 | 41.7 | 9.490 |
| Case study on implementation 6 | 42.2 | 8.694 |
| Case study on implementation 7 | 35.1 | 12.404 |
| Case study on implementation 8 | 37.5 | 11.094 |
| Case study on implementation 9 | 38.2 | 10.520 |
Table 2：RCM infiltration coefficient variance analyses
Table 2
As shown in Table 1：
After mixing a certain amount of penetrant crystalline material in concrete, mechanical strength has certain reduction；But cellulose
The addition of fiber has certain make up to the mechanical property of loss.On the whole, cellulose fiber peacekeeping penetrant crystalline material is mixed again
Under material, the mechanical performance of concrete only under fraction volume has certain reduction, but meets use intensity basic demand.
Under the common incorporation of cellulose fiber peacekeeping penetrant crystalline material, concrete 28d unstable state chloride ion transport coefficients
DRCMBy 83.452 × 10-13m2/ s reduces 8 × 10-13m2/ s~10 × 10-13m2/ s sections, it is larger to reduce amplitude, i.e. concrete
Precenting chlorate corrosion ability is obviously improved, and the possibility that chloride erosion destruction occurs in practice in engineering is reduced.
By table 2 it is concluded that：
The influence factor of RCM chloride-penetration resistance coefficients includes cellulose fiber peacekeeping penetrant crystalline material and cellulose fiber
The reciprocation of peacekeeping penetrant crystalline material.Wherein cellulose fibre, penetrant crystalline material and cellulose fiber peacekeeping infiltration knot
The F values of three factor of reciprocation of brilliant material are all higher than 1, and P values are less than 0.05, therefore under the significance of α=0.05, because
Son be it is significant, i.e., cellulose fibre volume, penetrant crystalline material volume and combination under reciprocation difference will to chlorine from
Sub- infiltration coefficient makes a significant impact, and may determine that according to the size of conspicuousness P, and influence factor is descending to be ordered as
It should：The reciprocation that penetrant crystalline material volume, cellulose fibre volume, the two combine.
The object, technical solutions and advantages of the present invention are further described in detail in present embodiment, should say
Bright, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all spirit in the present invention
Within principle, made by all any modification, equivalent and improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of infiltration crystallization type concrete of precenting chlorate corrosion, which is characterized in that by weight, which includes following
Component：120-130 parts of cement, 55-65 parts of flyash, 332-359 parts of fine aggregate, 500-560 parts of coarse aggregate, water 50.5-59.5
Part, 0.25-0.55 parts of cellulose fibre, 3.3-3.48 parts of water-reducing agent, 22.5-27 parts of swelling agent, penetrant crystalline material 1.5-3.5
Part.
2. a kind of infiltration crystallization type concrete of precenting chlorate corrosion according to claim 1, which is characterized in that the water
Mud is PO42.5R class g cements, selects the cement type compatible with poly carboxylic acid series water reducer.
3. a kind of infiltration crystallization type concrete of precenting chlorate corrosion according to claim 1, which is characterized in that the powder
Coal ash is the high-quality I grade of flyash of power plant, and 45 μm of square hole screens tail over≤12%, and water demand ratio≤95%, specific surface area is more than
400m2/kg。
4. a kind of infiltration crystallization type concrete of precenting chlorate corrosion according to claim 1, which is characterized in that the thin bone
Material is sand in continuous grading, fineness modulus 2.8-3.0.
5. a kind of infiltration crystallization type concrete of precenting chlorate corrosion according to claim 1, which is characterized in that the thick bone
Material is the artificial rubble based on lime stone, and grain size is 5mm-15mm.
6. a kind of infiltration crystallization type concrete of precenting chlorate corrosion according to claim 1, which is characterized in that the fiber
The length of cellulose fiber is 2-3mm, a diameter of 15-20 μm, elasticity modulus 8-10Gpa, tensile strength 800-900MPa, is broken
Elongation percentage reaches 10%, proportion 1.1g/m3。
7. a kind of infiltration crystallization type concrete of precenting chlorate corrosion according to claim 1, which is characterized in that the diminishing
Agent is polycarboxylate superplasticizer mother liquor.
8. a kind of infiltration crystallization type concrete of precenting chlorate corrosion according to claim 7, which is characterized in that the poly- carboxylic
The solid content of sour water-reducing agent mother liquor is 40wt%, water-reducing rate >=25%.
9. a kind of infiltration crystallization type concrete of precenting chlorate corrosion according to claim 1, which is characterized in that described is swollen
Swollen dose is calcium sulphoaluminate-calcium oxide composite expanding agent.
10. a kind of infiltration crystallization type concrete of precenting chlorate corrosion according to claim 1, which is characterized in that described to ooze
Saturating crystalline material is activated silica penetrant crystalline masterbatch.
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