CN110078431A - Anti- isolation high-strength heat-insulating concrete of one kind and preparation method thereof - Google Patents
Anti- isolation high-strength heat-insulating concrete of one kind and preparation method thereof Download PDFInfo
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- CN110078431A CN110078431A CN201910475438.8A CN201910475438A CN110078431A CN 110078431 A CN110078431 A CN 110078431A CN 201910475438 A CN201910475438 A CN 201910475438A CN 110078431 A CN110078431 A CN 110078431A
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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
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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 anti-isolation high-strength heat-insulating concrete and preparation method thereof.Anti- isolation high-strength heat-insulating concrete includes following components: cement, river sand, mountain flour sand, stone, water, flyash, slag powders, additive, thermal insulating filling, high hydroscopic resin；The fineness modulus of the mountain flour sand is 2.9, partial size≤0.16mm content of stone powder < 1.6% in mountain flour sand；Stone is the continuous grading stone that partial size is 5-31.5mm, and clay content 0.4-0.6%, the fineness modulus of river sand is 2.4, clay content 2.0-2.2%, bulk density 1450-1500kg/m3；Thermal insulating filling includes following components: hollow glass micropearl, clay, mullite powder, ceramic fibre, polyacrylamide, epoxy resin, water.The advantages of anti-isolation high-strength heat-insulating concrete of the invention has workability good, anti-isolation, anti-bleeding, and intensity is high, heat-insulation and heat-preservation.
Description
Technical field
The present invention relates to building material technical fields, more specifically, it relates to a kind of anti-isolation high-strength heat-insulating concrete
And preparation method thereof.
Background technique
High-strength concrete is as a kind of new construction material, with its compression strength is high, non-deformability is strong, density is big, hole
The low superiority of gap rate is widely used in high building structure, long-span bridge girder construction and certain unique constructions.
The feature of high-strength concrete maximum is compression strength height, generally the 4~6 of regular tenacity concrete times, therefore can reduce component
Section, therefore optimum is used for skyscraper.
In the prior art, application No. is disclose one kind in the Chinese invention patent application file of CN201410356587.X
High-strength anti-crack concrete material is made pottery by water, P.II52.5 cement, river sand, coarse aggregate stone, flyash, miberal powder, silicon powder, water suction
Grain and composite additive are agitated, mixing, aquation and condense, wherein water, P.II52.5 cement, river sand, coarse aggregate stone
Son, flyash, miberal powder, silicon powder, water suction haydite and composite additive account for the weight percent of the high-strength anti-crack concrete material
It is respectively as follows: water 4%-6%, P.II52.5 cement 11%-14%, river sand 24%-34%, coarse aggregate stone 30%-40%, fine coal
Grey 2%-5%, miberal powder 1%-3%, silicon powder 2%-4%, water suction haydite 1%-4%, composite additive 0%-1%.
Due to mixing more river sand in existing this high-strength anti-crack concrete material, since present resource and environment are increasingly tight
, natural river sand shortage has become reality, and natural river sand higher cost, and present most of concrete mixing plants all use mountain flour sand
Instead of part river sand, although reducing costs, since mountain flour sand gradation is unreasonable, cause concrete water bleeding, isolation and easily
The bad phenomenons such as property difference, and the heat insulation and preservation effect of existing this high-strength anti-crack concrete is poor, it is certain special to be unable to satisfy
The demand of construction field, therefore, researching and developing the anti-isolation high-strength heat-insulating concrete of one kind is problem to be solved.
Summary of the invention
In view of the deficienciess of the prior art, the first purpose of this invention is that providing the anti-isolation high-strength heat-insulating of one kind mixes
The advantages of solidifying soil, anti-isolation good with workability, anti-bleeding, intensity is high, heat-insulation and heat-preservation.
Second object of the present invention is to provide a kind of preparation method of anti-isolation high-strength heat-insulating concrete have system
Preparation Method is simple, advantage at low cost.
To realize above-mentioned first purpose, the present invention provides the following technical scheme that a kind of anti-isolation high-strength heat-insulating coagulation
Soil comprises the following components in parts by weight: 330-350 parts of cement, 690-711 parts of river sands, 180-300 parts of mountain flour sand, 919-939 parts
Stone, 178-198 part water, 40-60 parts of flyash, 70-90 parts of slag powders, 1.75-3.75 parts of additives, 6.5-8.5 parts it is heat-insulated
Filler, 6.6-10.5 part high hydroscopic resin；
The mountain flour sand mixes system according to the mass ratio of 1:0.1-0.3 with mountain flour after crushing cleaning by the aggregate chips particle of building stones factory
At the fineness modulus of mountain flour sand is 2.9, partial size≤0.16mm content of stone powder < 1.6% in mountain flour sand；
The stone is the continuous grading stone that partial size is 5-31.5mm, and the fineness modulus of clay content 0.4-0.6%, river sand are
2.4, clay content 2.0-2.2%, bulk density 1450-1500kg/m3；
The thermal insulating filling comprises the following components in parts by weight: 1.4-2.4 parts of hollow glass micropearls, 0.5-0.9 parts of clays, 1.1-
1.5 parts of mullite powders, 1.4-1.8 parts of ceramic fibres, 0.2-0.5 parts of polyacrylamides, 3-5 parts of epoxy resin, 5-10 parts of water.
It can due to partial size≤0.16mm content of stone powder < 1.6% in control mountain flour sand by using above-mentioned technical proposal
It prevents from causing concrete strength to be affected because content of stone powder is more, substitutes part river sand using mountain flour sand, reduce river sand
Usage amount, while save the cost, by rationally controlling mountain flour sand, stone and the thickness of river sand, make to be formed between aggregate and close
The gradation of reason, aggregate are mutually filled, are mutually overlapped, to improve the compactness of concrete, are reduced the porosity of concrete, are improved
The workability and mobility of concrete, make compression strength get a promotion.
Thermal coefficient is in 0.025W/mK, thermally conductive system under the hollow glass micropearl room temperature being added in the thermal insulating filling of incorporation
Base, and its is light-weight, dispersibility and good fluidity, compression strength is high, and the thermal coefficient of clay and mullite powder is small, Mo Lai
The hardness of mountain flour is high, and the coefficient of expansion is small, is cooperated by components such as the ceramic fibres, polyacrylamide and epoxy resin of addition
It uses, so that thermal insulating filling can not only reduce the thermal coefficient of concrete, moreover it is possible to which the cohesive force for increasing concrete each component makes to mix
The compression strength for coagulating soil is improved.
The bottom of concrete mix is set not have water to improve the water-retaining property of concrete mix using high hydroscopic resin
Mud is precipitated, to avoid the generation of bleeding, segregation phenomenon.
Further, the mountain flour is by 1.4-2.2 parts by weight vermiculite power, 0.7-1.4 parts by weight shale powder, 0.2-0.5 weight
Part zeolite powder and 0.8-1.2 parts by weight ceramic powder are measured after the sulfuric acid that concentration is 3-5mol/L impregnates 5-6h, drying, ball milling system
At the mass ratio of the concentrated sulfuric acid and mountain flour is 1:3-5.
By using above-mentioned technical proposal, carved due to impregnating vermiculite power, shale powder, zeolite powder and ceramic powder through persulfuric acid
Erosion makes all kinds of mountain flour surface irregularities, and the specific surface area of all kinds of mountain flours increases, and the paste thickness of package aggregate is reduced, and collapses
Degree reduces therewith, to overcome because river sand fineness modulus is big, the slump caused by specific surface area is reduced is bigger than normal, to prevent coagulation
There is bleeding, segregation phenomenon in soil；Vermiculite power, shale powder, zeolite powder and ceramic powder have lesser thermal coefficient simultaneously, so that mixed
The heat preservation and insulation for coagulating soil is preferable.
Further, the thermal insulating filling is made of following methods: epoxy resin being added to the water, is stirred evenly, is added
After mixing evenly clay, mullite powder and hollow glass micropearl is added, after stirring, in 100- in polyacrylamide and ceramic fibre
Dry 10-15min at 120 DEG C, being milled to average grain diameter is 0.2-0.5 μm.
By using above-mentioned technical proposal, water and epoxy resin are mixed, form epoxy resin latex, then by polyacrylamide
Amine and ceramic fibre are added to the water, and it is more equal that polyacrylamide can allow ceramic fibre to disperse in epoxy resin latex
It is even, ceramic fibre conglomeration is prevented, then dry after clay, mullite powder and hollow glass micropearl are mixed with epoxy resin latex,
Ball is clayed into power, and thermal insulating filling, which is made, to be filled in the hole of inside concrete, is reduced the porosity of concrete, is improved it
Compactness and compression strength.
Further, the mountain flour sand accounts for the 20-30% of river sand and the total dosage of mountain flour sand.
By using above-mentioned technical proposal, the mountain flour sand of proper ratio can be bonded with cement slurry well, to improve
The compression strength of concrete, while the water-retaining property of river sand and good lubricity make to mix so that river sand and mountain flour sand complement each other
Solidifying soil has good workability.
Further, the additive is high-efficiency water-reducing agent of poly-carboxylic acid, water-reducing rate 20-35%, 2 hours slump damages
Lose < 15%.
By using above-mentioned technical proposal, the water-reducing rate of high-efficiency water-reducing agent of poly-carboxylic acid is high, little loss of slump, concrete
Workability, workability, cohesiveness are good.
Further, the flyash is II grades of flyash, density 1.95-2.35g/cm3, bulk density 0.63-
0.75g/cm3, loss on ignition 2-2.6%.
By using above-mentioned technical proposal, the active constituent of flyash is silica and aluminum oxide, with cement, water
After mixing, relatively stable cementitious material can be generated, to make concrete intensity with higher, while 70% in flyash
Above particle is amorphous spherical glass body, primarily serves ball bearing effect, lubrication is played in concrete mix
Effect improves the workability of concrete mix, and flyash and sand, stone etc. constitute rational gradation composition, makes each other mutually
It mutually fills, concrete density can be effectively increased, further increase the anti-permeability strength and oil resistant erosiveness of concrete.
Further, the slag powders are S95 grade slag powder, and fluidity ratio is 95-100%, and 28d activity is 95-
105%, specific surface area 400-450m2/kg。
By using above-mentioned technical proposal, miberal powder mineral admixture has " active effect ", " interfacial effect ", " micro- to fill out effect
Answer " and many comprehensive effects such as " diminishing effect ", the mineral admixtures such as miberal powder can not only improve rheological property, reduce aquation
Heat reduces slump-loss, reduces isolation and bleeding, can also improve the pore structure and mechanical property of concrete structure, improves
The durability of later strength and resistance to oil corrosion.
Further, the high hydroscopic resin is the Sodium Polyacrylate of 80-120 mesh or the one or two of polyacrylic acid potassium
Composition.
By using above-mentioned technical proposal, polyacrylic acid potassium is able to suppress cement slurry dispersion, has drop dehydration concurrently, improves stream
The performances such as type and increase lubricity, can improve the rheological property of concrete mortar, cement is inhibited to separate with stone, increase adhesive aggregation
Power, Sodium Polyacrylate have imbibition ability and excellent water retention property, mix in concrete, concrete can be made to have excellent
Water retention property reduces the bleeding rate of concrete, keeps concrete workability good, is not easy isolation and bleeding.
To realize above-mentioned second purpose, the present invention provides the following technical scheme that a kind of anti-isolation high-strength heat-insulating coagulation
The preparation method of soil, comprising the following steps:
S1, high hydroscopic resin is slowly added into water while stirring, stirs 10-13min, after granules swell suspension, stood
2-2.5h is added additive, is uniformly mixed after high hydroscopic resin dissolution；
S2, cement, river sand, mountain flour sand, stone, flyash, slag powders are added sequentially in blender, are added obtained by step S1
Object stirs 10-15min at 30-40 DEG C, and thermal insulating filling is added, and stirs 2-4min, anti-isolation high-strength heat-insulating concrete is made.
By using above-mentioned technical proposal, high hydroscopic resin is absorbed water and is sufficiently swollen, and added after being mixed with water-reducing agent
In the raw materials such as cement, river sand, mountain flour sand, when inside concrete water content is reduced, hydroscopic high-molecular resin will be slow releasing and inhale
The moisture of receipts, to reduce the contraction distortion of concrete, reduces opening for concrete to improve the water content of inside concrete
It splits.
Further, in the step S1, the stirring rate that high hydroscopic resin is added to the water is 1000-1500r/min.
In conclusion the invention has the following advantages:
The first, part river sand is substituted using mountain flour sand due to the present invention, and rationally controls the partial size of mountain flour sand, river sand, stone, made
Mountain flour sand, river sand and stone form good gradation relationship, to mutually overlap in inside concrete, mutually filling, improve mixed
The workability and compactness of soil are coagulated, reduces isolation and excreting water phenomenon, while adding by hollow glass micropearl, clay, mullite powder
Thermal insulating filling made of equal raw materials, since the hardness of hollow glass micropearl and mullite powder is big, thermal coefficient is small, epoxy resin tool
There is certain viscosity, so that thermal insulating filling can not only improve the compression strength of concrete, reduce its thermal coefficient, moreover it is possible to improve mixed
The cohesive force for coagulating soil, reduces the slump-loss of concrete, is not easy to isolate, bleeding.
The second, it is dried after preferably impregnating sulfuric acid using vermiculite power, shale powder, zeolite powder and ceramic powder in the present invention, ball milling
Mountain flour is prepared, since the thermal coefficient of vermiculite power, shale powder, zeolite powder and ceramic powder is small, the heat of hydration is can reduce, improves coagulation
The workability of native mixture improves the intensity and durability of concrete, keeps the heat preservation and insulation of concrete preferable.
Third, method of the invention, by first by high hydroscopic resin elder generation water absorption and swelling, then by high hydroscopic resin and water-reducing agent
It is added in the raw materials such as cement after mixing, the high hydroscopic resin after water suction can discharge moisture during concrete setting, reduce mixed
The dry of solidifying soil is shunk, and keeps concrete not easy to crack.
Specific embodiment
Invention is further described in detail with reference to embodiments.
The preparation example 1-3 of thermal insulating filling
Epoxy resin is selected from the asphalt mixtures modified by epoxy resin that the article No. that Changzhou Le Bang composite material Co., Ltd sells is 128-1 in preparation example 1-3
Polyacrylamide, the ceramic fibre that rouge, polyacrylamide are selected from the JQ-004 that Renqiu City Jin Quan Chemical Co., Ltd. sells are selected from
The article No. that Lingshou County Jiade mineral products processing factory sells is the ceramic fibre of JD-TCXW1, clay selected from the safe mineral products in Lingshou County
Processing factory sell article No. be 200 clay, mullite powder be selected from Lingshou County Bang Sheng mineral products processing factory sell article No. be
The hollow glass that 32001 article No. of mullite powder, hollow glass micropearl selected from the sale of Lingshou County Sheng Heng mineral products processing factory is 191
Glass microballon.
Preparation example 1: according to the proportion in table 1,3kg epoxy resin is added in 5kg water, is stirred evenly, it is poly- that 0.2kg is added
0.5kg clay, 1.1kg mullite powder and 1.4kg hollow glass is added after mixing evenly in acrylamide and 1.4kg ceramic fibre
Microballon, after stirring, the dry 10min at 100 DEG C, being milled to average grain diameter is 0.2 μm.
The raw material proportioning of thermal insulating filling in 1 preparation example 1-3 of table
Preparation example 2: according to the proportion in table 1,4kg epoxy resin is added in 8kg water, is stirred evenly, 0.3kg polypropylene is added
It is micro- that 0.7kg clay, 1.3kg mullite powder and 1.9kg hollow glass is added after mixing evenly in amide and 1.6kg ceramic fibre
Pearl, after stirring, the dry 13min at 110 DEG C, being milled to average grain diameter is 0.4 μm.
Preparation example 3: according to the proportion in table 1,5kg epoxy resin is added in 10kg water, is stirred evenly, 0.5kg is added
0.9kg clay, 1.5kg mullite powder and the hollow glass of 2.4kg is added after mixing evenly in polyacrylamide and 1.8kg ceramic fibre
Glass microballon, after stirring, the dry 15min at 120 DEG C, being milled to average grain diameter is 0.5 μm.
Embodiment
Sodium Polyacrylate high hydroscopic resin is selected from Jinan Hua Di Trade Co., Ltd. in embodiment 1-3, and polyacrylic acid potassium is high
It is 390690 that water-absorbing resin, which is selected from the article No. that Qingdao Shou Ke new material Co., Ltd sells, and high-efficiency water-reducing agent of poly-carboxylic acid is selected from Langfang
The high-efficiency water-reducing agent of poly-carboxylic acid for the model 109 that new industry chemical products sale Co., Ltd sells, it is gloomy that vermiculite power is selected from Lingshou County
The vermiculite power for the SR-ZSKF711 that right mineral products processing factory sells, zeolite powder are selected from what Lingshou County Zhen Fang mineral products processing factory sold
The zeolite powder that article No. is 86288, shale powder are selected from the shale that the article No. that Lingshou County Ke Nong seedling medium processing factory sells is 0549
Powder, ceramic powder are selected from the ceramic powder that the article No. that Lingshou County Yi Xuan mineral products processing factory sells is 6000.
Embodiment 1: a kind of anti-isolation high-strength heat-insulating concrete, raw material proportioning is as shown in table 2, the preparation side of the concrete
Method the following steps are included:
S1, the revolving speed with 1000r/min, while stirring by 10.6kg/m3High hydroscopic resin is slowly added into 198kg/m3In water,
10min is stirred, after granules swell suspension, stands 2h, after high hydroscopic resin dissolution, 3.75kg/m is added3Additive, stirring
It is uniformly mixed；
High hydroscopic resin is the Sodium Polyacrylate high hydroscopic resin of 80 mesh, and additive is high-efficiency water-reducing agent of poly-carboxylic acid, and water-reducing rate is
20%, 2 hours slump-loss < 15%；
S2, by 350kg/m3Cement, 711kg/m3River sand, 180kg/m3Mountain flour sand, 929kg/m3Stone, 60kg/m3Flyash,
90kg/m3Slag powders are added sequentially in blender, and step S1 gains are added, and 10min is stirred at 30 DEG C, and 8.5kg/ is added
m3Thermal insulating filling stirs 2min, anti-isolation high-strength heat-insulating concrete is made；
Cement is P.O42.5 cement, and the fineness modulus of river sand is 2.4, clay content 2.0%, bulk density 1450kg/m3,
Mountain flour sand accounts for the 20% of river sand and the total dosage of mountain flour sand, and mountain flour sand is pressed after crushing cleaning with mountain flour by the aggregate chips particle of building stones factory
It is mixed according to the mass ratio of 1:0.1, the fineness modulus of mountain flour sand is 2.9, partial size≤0.16mm content of stone powder in mountain flour sand
< 1.6%, mountain flour is by 1.4kg vermiculite power, 0.7kg shale powder, 0.2kg zeolite powder and 0.8kg ceramic powder through concentration in mountain flour sand
After the sulfuric acid immersion 5h of 3mol/L, drying, ball milling are made, and the mass ratio of the concentrated sulfuric acid and mountain flour is 1:3, and stone is that partial size is 5-
The continuous grading stone of 31.5mm, clay content 0.4%, flyash are II grades of flyash, density 1.95g/cm3, accumulate close
Degree is 0.63g/cm3, loss on ignition 2%, slag powders are S95 grade slag powder, and fluidity ratio is that 95%, 28d activity is 95%, than
Surface area is 400m2/ kg, thermal insulating filling are made of preparation example 1.
The raw material proportioning of anti-isolation high-strength heat-resisting concrete in 2 embodiment 1-4 of table
Embodiment 2: a kind of anti-isolation high-strength heat-insulating concrete, raw material proportioning is as shown in table 2, the preparation method packet of the concrete
Include following steps:
S1, the revolving speed with 1300r/min, while stirring by 8.6kg/m3High hydroscopic resin is slowly added into 188kg/m3In water,
12min is stirred, after granules swell suspension, stands 2.3h, after high hydroscopic resin dissolution, 2.75kg/m is added3Additive stirs
It mixes uniformly mixed；
High hydroscopic resin is the polyacrylic acid potassium high hydroscopic resin of 100 mesh, and additive is high-efficiency water-reducing agent of poly-carboxylic acid, and water-reducing rate is
28%, 2 hours slump-loss < 15%；
S2, by 340kg/m3Cement, 690kg/m3River sand, 250kg/m3Mountain flour sand, 919kg/m3Stone, 50kg/m3Flyash,
80kg/m3Slag powders are added sequentially in blender, and step S1 gains are added, and 13min is stirred at 35 DEG C, and 7.5kg/ is added
m3Thermal insulating filling stirs 3min, anti-isolation high-strength heat-insulating concrete is made；
Cement is P.O42.5 cement, and the fineness modulus of river sand is 2.4, clay content 2.1%, bulk density 1480kg/m3,
Mountain flour sand accounts for the 26.6% of river sand and the total dosage of mountain flour sand, mountain flour sand by the aggregate chips particle of building stones factory after crushing cleaning with mountain flour
It is mixed according to the mass ratio of 1:0.3, the fineness modulus of mountain flour sand is 2.9, and partial size≤0.16mm mountain flour contains in mountain flour sand
< 1.6% is measured, mountain flour is by 1.8kg vermiculite power, 1.0kg shale powder, 0.3kg zeolite powder and 1.0kg ceramic powder through dense in mountain flour sand
After the sulfuric acid that degree is 4mol/L impregnates 5.5h, drying, ball milling are made, and the mass ratio of the concentrated sulfuric acid and mountain flour is 1:4, and stone is partial size
For the continuous grading stone of 5-31.5mm, clay content 0.5%, flyash is II grades of flyash, density 2.15g/cm3, heap
Product density is 0.69g/cm3, loss on ignition 2.3%, slag powders are S95 grade slag powder, and fluidity ratio is that 98%, 28d activity is
100%, specific surface area 430m2/ kg, thermal insulating filling are made of preparation example 2.
Embodiment 3: a kind of anti-isolation high-strength heat-insulating concrete, raw material proportioning is as shown in table 2, the preparation side of the concrete
Method the following steps are included:
S1, the revolving speed with 1500r/min, while stirring by 6.6kg/m3High hydroscopic resin is slowly added into 178kg/m3In water,
13min is stirred, after granules swell suspension, stands 2.5h, after high hydroscopic resin dissolution, 1.75kg/m is added3Additive stirs
It mixes uniformly mixed；
High hydroscopic resin be 120 mesh polyacrylic acid potassium high hydroscopic resin and Sodium Polyacrylate high hydroscopic resin according to 1:1 matter
The mixture than composition is measured, additive is high-efficiency water-reducing agent of poly-carboxylic acid, water-reducing rate 35%, 2 hours slump-loss < 15%；
S2, by 330kg/m3Cement, 700kg/m3River sand, 300kg/m3Mountain flour sand, 939kg/m3Stone, 40kg/m3Flyash,
70kg/m3Slag powders are added sequentially in blender, and step S1 gains are added, and 15min is stirred at 40 DEG C, and 6.5kg/ is added
m3Thermal insulating filling stirs 4min, anti-isolation high-strength heat-insulating concrete is made；
Cement is P.O42.5 cement, and the fineness modulus of river sand is 2.4, clay content 2.2%, bulk density 1500kg/m3,
Mountain flour sand accounts for the 30% of river sand and the total dosage of mountain flour sand, and mountain flour sand is pressed after crushing cleaning with mountain flour by the aggregate chips particle of building stones factory
It is mixed according to the mass ratio of 1:0.5, the fineness modulus of mountain flour sand is 2.9, partial size≤0.16mm content of stone powder in mountain flour sand
< 1.6%, mountain flour is by 2.2kg vermiculite power, 1.4kg shale powder, 0.5kg zeolite powder and 1.2kg ceramic powder through concentration in mountain flour sand
After the sulfuric acid immersion 6h of 5mol/L, drying, ball milling are made, and the mass ratio of the concentrated sulfuric acid and mountain flour is 1:5, and stone is that partial size is 5-
The continuous grading stone of 31.5mm, clay content 0.6%, flyash are II grades of flyash, density 2.35g/cm3, accumulate close
Degree is 0.75g/cm3, loss on ignition 2.6%, slag powders are S95 grade slag powder, and fluidity ratio is that 100%, 28d activity is
105%, specific surface area 450m2/ kg, thermal insulating filling are made of preparation example 3.
Comparative example
Comparative example 1: a kind of anti-isolation high-strength heat-insulating concrete, the difference from embodiment 1 is that, it is not added with thermal insulating filling.
Comparative example 2: a kind of anti-isolation high-strength heat-insulating concrete, the difference from embodiment 1 is that, it is not added with super absorbent resin
Rouge.
Comparative example 3: a kind of anti-isolation high-strength heat-insulating concrete, the difference from embodiment 1 is that, mountain flour sand uses fineness mould
Number is 2.4, clay content 2%, bulk density 1450kg/m3River sand substitution.
Comparative example 4: a kind of anti-isolation high-strength heat-insulating concrete, the difference from embodiment 1 is that, mountain flour is by blueness in mountain flour sand
The talcum powder that the article No. that the great mining industry Co., Ltd in island ten thousand sells is WH006 substitutes, and talcum powder is impregnated without sulfuric acid and etched.
Comparative example 5: it is prepared with embodiment 1 in the Chinese invention patent file application No. is CN201310353198.7 light
Matter high-strength lightweight aggregate concrete is equipped with raw material: 40 μm of average grain diameter of 42.5 normal silicates as control, according to following ratio
400 parts of cement；0.18 μm of average grain diameter, 49 parts of the silicon ash of SiO2 content >=85%；20 μm of average grain diameter of S95 grades or more of mine
80 parts of ground-slag；(0.16mm or less powder content crushes 590 parts of the continuous grading mountain flour sand that partial size is 0.16~4.75mm less than 5%
Value is less than 10%)；(cylindrical compress strength is greater than 6.5MPa or more, water suction to 683 parts of the continuous grading haydites of book structure that partial size is 5~20mm
Rate is less than 4%)；Water-reducing rate is greater than 3.1 parts of high efficiency water reducing agent of 30%；120 parts of water；0.5 part of polypropylene fibre, steel mesh is by 8
The compressor wire of root Ф 4.8mm does main reinforcement, does circumferential construction muscle by the cold-drawn high strength yarn of Ф 3.0mm and works out, protective layer
18 millimeters of thickness.
Performance detection test
Concrete is prepared according to the method in embodiment 1-3 and comparative example 1-5, and detects the items of concrete in accordance with the following methods
Performance, testing result are recorded in table 3:
1, it compression strength: is detected according to GB/T50081-2002 " standard for test methods of mechanical properties of ordinary concrete "；
2, it the slump: is detected according to GB/T50080-2002 " Standard for test methods of properties of ordinary concrete mixture standard "；
3, bleeding is tested: being detected according to GB/T50080-2002 " Standard for test methods of properties of ordinary concrete mixture standard "；
4, thermal coefficient: the embodiment 1-3 and comparative example 1-4 concrete prepared is poured into the mold of 20cm × 20cm, in phase
With under conditions of conserve molding, and according to GB/T10297-1998 " the measurement heat-pole method of non-metallic solid material heat-conducting coefficient " into
Row detection.
The testing concrete performance result of each embodiment of table 3 and the preparation of each comparative example
The concrete prepared it can be seen from data in table 3 according to method in embodiment 1-3,28 compression strength reach 48MPa
More than, and little loss of slump, bleeding rate is still 0 after 60min, and thermal coefficient is respectively less than 0.45W/mK, illustrates this hair
The concrete crushing strength of bright embodiment 1-3 preparation is high, and workability is good, and education resistance can be strong, has preferable heat-insulation and heat-preservation
Energy.
Comparative example 1 is because being not added with thermal insulating filling in concrete, the compression strength of concrete it can be seen from data in table 3
Increasing slowly, 28d compression strength is only 41.2MPa, and slump-loss is 35mm, compared with embodiment 1-3, slump-loss
Larger, 60min bleeding rate is 5%, and thermal coefficient 0.68W/mK, bleeding rate and thermal coefficient are compared with embodiment 1-3,
Increase, illustrates that adding thermal insulating filling improves the compression strength of concrete, and improve the workability of concrete, reduce bleeding rate and lead
Hot coefficient.
Comparative example 2 is because being not added with high hydroscopic resin in concrete, the concrete and embodiment 1-3 systems that prepared by comparative example 2
Standby concrete is compared, and compression strength and thermal coefficient variation are little, but slump-loss significantly increases, in secreting for 60min
Water rate rises to 11%, illustrates that high hydroscopic resin can improve the workability of concrete, makes concrete be not easy to isolate, bleeding.
Comparative example 3 because in concrete all using river sand, concrete crushing strength and embodiment 1-3 prepared by comparative example 3
Compared to being not much different, but concrete slump loss prepared by comparative example 3 is larger, and bleeding is serious, and thermal coefficient increases, and explanation makes
The workability that concrete can be significantly improved with part mountain flour sand substitution river sand, reduces the slump-loss of concrete, makes coagulation
Soil has preferable workability and education resistance energy, and concrete is made to have heat preservation and insulation.
Comparative example 4 because use talcum powder substitution mountain flour sand in mountain flour, it can be seen from the test results that, the resistance to compression of concrete
Strength Changes are little, but the slump, bleeding rate and thermal coefficient are deteriorated, and workability is deteriorated, and excreting water phenomenon occur, and with comparison
Data comparison in example 3, properties illustrate that mountain flour can effectively improve in mountain flour sand better than performance in comparative example 3 in comparative example 4
The workability of concrete prevents concrete from bleeding and segregation phenomenon occur, while reducing the thermal coefficient of concrete.
Comparative example 5 be prior art preparation concrete, with embodiment 1-3 preparation concrete compared with, although intensity compared with
Height, but slump-loss is larger, thermal coefficient is larger, illustrates the concrete slump loss of 1-3 of embodiment of the present invention preparation
Small, workability is good, is not easy to isolate, bleeding, and has heat preservation and insulation.
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 (10)
1. a kind of anti-isolation high-strength heat-insulating concrete, which is characterized in that comprise the following components in parts by weight: 330-350 parts of cement,
690-711 parts of river sands, 180-300 parts of mountain flour sand, 919-939 parts of stones, 178-198 parts of water, 40-60 parts of flyash, 70-90 parts
Slag powders, 1.75-3.75 part additive, 6.5-8.5 parts of thermal insulating fillings, 6.6-10.5 parts of high hydroscopic resins；
The mountain flour sand mixes system according to the mass ratio of 1:0.1-0.3 with mountain flour after crushing cleaning by the aggregate chips particle of building stones factory
At the fineness modulus of mountain flour sand is 2.9, partial size≤0.16mm content of stone powder < 1.6% in mountain flour sand；
The stone is the continuous grading stone that partial size is 5-31.5mm, and the fineness modulus of clay content 0.4-0.6%, river sand are
2.4, clay content 2.0-2.2%, bulk density 1450-1500kg/m3；
The thermal insulating filling comprises the following components in parts by weight: 1.4-2.4 parts of hollow glass micropearls, 0.5-0.9 parts of clays, 1.1-
1.5 parts of mullite powders, 1.4-1.8 parts of ceramic fibres, 0.2-0.5 parts of polyacrylamides, 3-5 parts of epoxy resin, 5-10 parts of water.
2. anti-isolation high-strength heat-insulating concrete according to claim 1, which is characterized in that the mountain flour is by 1.4-2.2 weight
Part vermiculite power, 0.7-1.4 parts by weight shale powder, 0.2-0.5 parts by weight zeolite powder and 0.8-1.2 parts by weight ceramic powder are measured through concentration
After the sulfuric acid immersion 5-6h of 3-5mol/L, drying, ball milling are made, and the mass ratio of the concentrated sulfuric acid and mountain flour is 1:3-5.
3. anti-isolation high-strength heat-insulating concrete according to claim 1, which is characterized in that the thermal insulating filling is by with lower section
Method is made: epoxy resin being added to the water, is stirred evenly, polyacrylamide and ceramic fibre is added, after mixing evenly, is added viscous
Soil, mullite powder and hollow glass micropearl, after stirring, the dry 10-15min at 100-120 DEG C, being milled to average grain diameter is
0.2-0.5μm。
4. anti-isolation high-strength heat-insulating concrete according to claim 1, which is characterized in that the mountain flour sand accounts for river sand and stone
The 20-30% of the total dosage of flour sand.
5. anti-isolation high-strength heat-insulating concrete according to claim 1, which is characterized in that the additive is that polycarboxylic acids is high
Imitate water-reducing agent, water-reducing rate 20-35%, 2 hours slump-loss < 15%.
6. anti-isolation high-strength heat-insulating concrete according to claim 1, which is characterized in that the flyash is II grades of fine coal
Ash, density 1.95-2.35g/cm3, bulk density 0.63-0.75g/cm3, loss on ignition 2-2.6%.
7. anti-isolation high-strength heat-insulating concrete according to claim 1, which is characterized in that the slag powders are S95 grades of mines
Ground-slag, fluidity ratio are 95-100%, and 28d activity is 95-105%, specific surface area 400-450m2/kg。
8. anti-isolation high-strength heat-insulating concrete according to claim 1, which is characterized in that the high hydroscopic resin is 80-
The Sodium Polyacrylate of 120 mesh or one or two kinds of compositions of polyacrylic acid potassium.
9. a kind of preparation method of anti-isolation high-strength heat-insulating concrete according to claim 1-8, feature exist
In, comprising the following steps:
S1, high hydroscopic resin is slowly added into water while stirring, stirs 10-13min, after granules swell suspension, stood
2-2.5h is added additive, is uniformly mixed after high hydroscopic resin dissolution；
S2, cement, river sand, mountain flour sand, stone, flyash, slag powders are added sequentially in blender, are added obtained by step S1
Object stirs 10-15min at 30-40 DEG C, and thermal insulating filling is added, and stirs 2-4min, anti-isolation high-strength heat-insulating concrete is made.
10. the preparation method of anti-isolation high-strength heat-insulating concrete according to claim 9, which is characterized in that the step
In S1, the stirring rate that high hydroscopic resin is added to the water is 1000-1500r/min.
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