CN109020373A - Early strong rapid-hardening concrete and preparation method thereof - Google Patents
Early strong rapid-hardening concrete and preparation method thereof Download PDFInfo
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- CN109020373A CN109020373A CN201810963889.1A CN201810963889A CN109020373A CN 109020373 A CN109020373 A CN 109020373A CN 201810963889 A CN201810963889 A CN 201810963889A CN 109020373 A CN109020373 A CN 109020373A
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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
- 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 strong rapid-hardening concrete of morning, it is related to building material technical field, its key points of the technical solution are that by the material composition of following parts by weight: 177-192 parts of water, 202-242 parts of cement, 734-830 parts of sands, 1002-1040 parts of stones, 51-65 parts of flyash, 60-77 parts of miberal powders, 5-11 parts of early strength agent, 4-9 parts of water-reducing agents, 2-7 parts of dispersing agents, 2-6 parts of accelerators, 1-5 parts of swelling agents, 1-5 parts of thickeners；Early strength agent is that polycarboxylate water-reducer, unsaturated polyester resin, triisopropanolamine and the sodium sulphate that mass ratio is 2-5:2-5:1-2:1-2 compound；Accelerator comprises the following components in parts by weight: 10-25 parts of polyacrylic acid, 5-15 parts of polymethylacrylic acid, 2-6 parts of bauxites, 1-4 parts of soda ash, 1-3 parts of quick limes, 2-6 parts of silicon powders and 1-5 parts of zinc sulfate.The problem of present invention is solved when preparing prefabricated components, and early strength of concrete is not high, and setting time is longer, influences mold turn around time.By adding early strength agent and accelerator in concrete, make concrete early strength with higher, and shorten concrete coagulating time.
Description
Technical field
The present invention relates to building material technical fields, more specifically, it be related to a kind of morning strong rapid-hardening concrete and its
Preparation method.
Background technique
Concrete prefabricated element be using concrete as the basic material building element made of factory in advance, including beam, plate,
Column and construction and decoration accessory etc. assemble for construction site, are the material bases of building industrialization.Due to the standardization of component and fixed
Type, prefabricated components save more material and artificial than the equivalent link that is produced with other construction methods, and product is by set
The factory of standard close inspection, quality guarantee rate are high.
In the prior art, it can refer to the Chinese invention patent application file that application publication number is CN105565723A, it is public
A kind of pervious concrete formula and construction method have been opened, has been grouped as by the group of following weight raw material: cement 260~440, second patent flour
Coal ash 90~150, slag powders 90~160, rubble 1500~1650, water, cementitious material, lime concrete reinforcing agent, polycarboxylic acids
Water-reducing agent, inorganic mineral oxide pigment and oleoresin cover agent, wherein the mixed proportion of water and lime is 0.25~0.40,
Wherein the mixed proportion of water and cementitious material is 0.25~0.40.
Existing this pervious concrete formula and construction method make permeable coagulation by adjusting the gap of pervious concrete
Soil has good water penetration, though additive amount polycarboxylate water-reducer to increase the intensity of concrete, when the condensation of concrete
Between it is longer, hydrated cementitious is slower, and gain in strength is slow, when making concrete prefabricated element, will lead to mold turn around time compared with
It is long.
In the prior art, it can refer to the Chinese invention patent application file that application publication number is CN107352906A, it is public
Opened a kind of C30 grades of steel slag sand self-compacting concrete and preparation method thereof, prefabricated components, water-cement ratio control 0.3~0.7 it
Between, wherein raw material components score calculating by weight includes: 2~10 parts by weight of Steel-slag Sand；2~10 parts by weight of glass microballoon；
2~10 parts by weight of cement；5~7 parts by weight of natural coarse aggregate；2~5 parts by weight of regenerated coarse aggregate；2~10 parts by weight of sand
Number；1.3~1.7 parts by weight of flyash；2~10 parts by weight of water.
Though the discarded steel slag of existing this C30 grades of steel slag sand self-compacting concretes recycling, reduces costs, and have
Good mobility and clearance through, early strength is not high, and setting time is longer, when making concrete prefabricated element,
It is longer to will lead to mold turn around time.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of morning strong rapid-hardening concrete, lead to
Addition early strength agent and accelerator are crossed, concrete coagulating time can be shortened, and improve early strength of concrete, shortens production coagulation
The turn around time of the mold of native prefabricated components.
To achieve the above object, the present invention provides the following technical scheme that a kind of strong rapid-hardening concrete of morning, by following heavy
Measure the material composition of part: 177-192 parts of water, 202-242 parts of cement, 734-830 parts of sands, 1002-1040 parts of stones, 51-65
Part flyash, 60-77 parts of miberal powders, 5-11 parts of early strength agent, 4-9 parts of water-reducing agents, 2-7 parts of dispersing agents, 2-6 parts of accelerators, 1-5 parts it is swollen
Swollen dose, 1-5 parts of thickeners；
The early strength agent be mass ratio be 1-3:2-5:1-3:1-2 polycarboxylate water-reducer, three isopropanol of unsaturated polyester resin
Amine and sodium sulphate compound；
The accelerator comprises the following components in parts by weight: 10-25 parts of polyacrylic acid, 5-15 parts of polymethylacrylic acid, 2-6 parts of aluminium
Alumina, 1-4 part soda ash, 1-3 parts of quick limes, 2-6 parts of silicon powders and 1-5 parts of zinc sulfate.
By using above-mentioned technical proposal, polycarboxylate water-reducer has diminishing high-efficient, and volume is low, little loss of slump,
The advantages that wide adaptability and excellent concrete durability, is used using unsaturated polyester resin and polycarboxylic acids water reducing agent compositional,
Influence of the slow setting ingredient carboxyl to hydrated cementitious in polycarboxylate water-reducer can be overcome, and can be increased between each raw material of concrete
Bond degree, increase density, bleeding rate is low, and function of slump protection is excellent；Triisopropanolamine and polycarboxylic acids water reducing agent compositional are to coagulation
The mobility of soil influences less, and concrete mortar is able to maintain relative fluidity, and can be improved the early strength of concrete, sulphur
Sour sodium and polycarboxylic acids water reducing agent compositional can be such that the initial set of concrete and final setting time significantly shifts to an earlier date, when shortening concrete coagulation
Between；Polyacrylic acid and polymethylacrylic acid organic accelerator compounding, can make concrete coagulation fast, early strength is high, silicon powder energy
The hydration of enough concrete is greatly speeded up, and after condensation, gain in strength is rapid；Soda ash, quick lime and hydrated cementitious add
The condensation of fast cement.
The present invention is further arranged to: further including 24-56 parts of defoaming agent, the defoaming agent is 1:1.8-2.8 by weight ratio
Polysiloxane, Siloxane-Oxyalkylene Copolymers composition.
By using above-mentioned technical proposal, during pump concrete, concrete is because collision friction can generate gas
Bubble, bubble can reduce the plane of structure volume of concrete, lead to inside concrete leakiness, influence the intensity of concrete, reduce reinforcing bar
The effective thickness of protective layer accelerates the carbonisation of concrete surface, influences the appearance of concrete, polysiloxane and poly-
Ether modified siloxane all has excellent defoaming foam inhibition function, helps to take out the bubble formed in concrete, and further press down
The increase of bubble processed reduces the gap between each aggregate, improves the intensity of concrete, makes the finer and close light of concrete appearance.
The present invention is further arranged to: further including the flow promortor that parts by weight are 17-24 parts, the flow promortor includes brown
At least one of coal Wax particles, white oil.
By using above-mentioned technical proposal, when using lignite Wax particles, lignite Wax particles are forming abundant mix with each component
After conjunction, water is reacted with cement, releases heat, and lignite Wax particles can be made to soften even and melted, the flowing of concrete is further increased
Property, and the gap between coarse-fine aggregate is reduced, when using white oil, during mixing, whole process can reduce the mixing of each component
Difficulty, and defoaming agent and flow promortor are used in conjunction with each other, and help to improve mixed effect, form preferably mutually compounding effect
Fruit promotes bubble discharge.
The present invention is further arranged to: the dispersing agent is compounded using cetyl trimethylammonium bromide and calgon
As dispersing agent, wherein the mass ratio of cetyl trimethylammonium bromide and calgon is 3-4:1-2.
By using above-mentioned technical proposal, using cationic surfactant cetyl trimethylammonium bromide and there is ring
The calgon of shape structure compounds manufactured dispersing agent, cement granules can be made to play peptizaiton, can be in cement condensate
The water for being included releases, and so as to improve the workability of concrete, improves the density and intensity of concrete.
The present invention is further arranged to: the sand is the middle sand that grain composition area is 2nd area, fineness modulus 2.3-
2.6, clay content 2-2.6%, clod content are 0.45-0.65%.
By using above-mentioned technical proposal, middle sand within the scope of the fineness modulus, facilitate plus each aggregate between filling out
Fill effect, reduce the hole between component, to improve the being completely embedded property between component, prevent concrete disintegration, increase at
The compression strength of concrete after type.
The present invention is further arranged to: the cobble-stone diameter is 5-25mm, and the cement is PII52.5 cement.
By using above-mentioned technical proposal, stone in the particle size range can be with the bones such as sand, flyash and miberal powder
Material cooperates, and increases the filling effect between aggregate, reduces the hole between component, and the connection improved between component is tight
Close property increases the compression strength of concrete after molding；The early strength of PII52.5 cement is high, and the heat of hydration is low, the coagulation after hardening
Soil is not likely to produce crack, keeps the appearance of concrete good.
The present invention is further arranged to: the flyash is low calcium II grades, fineness 8-13%, water demand ratio 95-
98%, loss on ignition 2-4.5%.
Guarantee cement using performance cement appropriate, flyash and miberal powder as glue material by using above-mentioned technical proposal
Consumptive use of water normal consistence, flyash water demand ratio and miberal powder fluidity ratio, shorten the setting time of concrete, and it is early to improve concrete
Phase intensity.
The present invention is further arranged to: the miberal powder is S95 grade miberal powders, and the specific surface area of miberal powder is 400m2/kg, 28 days
Activity index is 95%, and fluidity ratio is 100%.
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
Early strength and durability.
In view of the deficiencies of the prior art, the present invention intends to provide a kind of preparation of morning strong rapid-hardening concrete
Method can improve the early stage of concrete while shortening concrete coagulating time by using early strength agent and accelerator
Intensity reduces concrete when making concrete prefabricated element, the turn around time of mold.
To achieve the above object, the present invention provides the following technical scheme that a kind of preparation side of strong rapid-hardening concrete of morning
Method, comprising the following steps:
S1: the cement of corresponding parts by weight, sand, stone, flyash and miberal powder are sufficiently mixed, and form the first mixture；
S2: the early strength agent, water-reducing agent, thickener of corresponding parts by weight being added to the water, are sufficiently mixed, and form the second mixture；
S3: being added dispersing agent, swelling agent and flow promortor in the second mixture obtained into step S2, forms third mixing
Object；
S4: the third mixture obtained in step S3 is added in the first mixture obtained into step S1, after being sufficiently mixed
Accelerator and defoaming agent is added, is sufficiently mixed, obtains early strong rapid-hardening concrete.
By using above-mentioned technical proposal, now in step sl by cement, sand, stone, flyash and miberal powder these
Granular compositions first mix, and granular component is easier to disperse, and the first mixture can be made to reach well-mixed effect, in step
Early strength agent, water-reducing agent, thickener and water are uniformly mixed in S2, because the content of water is larger, early strength agent, water-reducing agent and increasing can be made
Thick dose is uniformly mixed, and is not in be difficult to the phenomenon that stirring, and dispersing agent, swelling agent and flow promortor are added in step s3, will
Dispersing agent, swelling agent and flow promortor and early strength agent etc. carry out stepped mixing, all kinds of raw materials can be made to be uniformly mixed, finally in step
Third mixture and the first mixture are mixed in S4, add accelerator and defoaming agent, can during stirring,
Bubble is sufficiently eliminated, the density of concrete is increased.
In conclusion the present invention has the advantages that compared with the prior art
(1) by the present invention in that with early strength agent and accelerator, by sodium sulphate and polycarboxylic acids water reducing agent compositional, coagulation can be reduced
The setting time of soil, make concrete rapid condensation, is compounded by polycarboxylate water-reducer and triisopropanolamine, can be improved concrete
Early strength；
(2) present invention can properly increase concrete sand ratio by the way that with the good aggregate of gradation, the accumulation hole of aggregate is smaller,
It further ensure that the slump before and after filling concrete, to prevent concrete from isolation, excreting water phenomenon occur；
(3) present invention assists in removing the bubble formed in concrete, and further suppress the increasing of bubble by addition defoaming agent
Add, reduce the gap between each aggregate, keep concrete more closely knit, improves the intensity of concrete, cause concrete appearance more
Close light；
(4) present invention further increases the mobility of concrete, and reduce between coarse-fine aggregate by the way that automatic flowing agent is added
Gap reduces the mixing difficulty of each component, and defoaming agent and flow promortor are used in conjunction with each other, and help to improve mixed effect,
Preferably mutual compounding effect is formed, promotes bubble discharge, increases concrete density, improve the intensity of concrete.
Specific embodiment
Embodiment 1: a kind of morning strong rapid-hardening concrete, by the material composition of following parts by weight: 177 parts of water, 202 parts of water
Mud, 734 parts of sands, 1002 parts of stones, 51 parts of flyash, 60 parts of miberal powders, 5 parts of early strength agent, 4 parts of water-reducing agents, 2 parts of dispersing agents, 2 parts
Accelerator, 1 part of swelling agent, 1 part of thickener, 24 parts of defoaming agents, 17 parts of lignite Wax particles；
Wherein early strength agent is polycarboxylate water-reducer, unsaturated polyester resin, triisopropanolamine and the sulfuric acid that mass ratio is 2:2:1:1
Sodium compounds；
Wherein accelerator comprises the following components in parts by weight: 10 parts of polyacrylic acid, 5 parts of polymethylacrylic acid, 2 parts of bauxites, 1 part
Soda ash, 1 part of quick lime, 2 parts of silicon powders and 1 part of zinc sulfate；
Wherein dispersing agent uses mass ratio to compound for the cetyl trimethylammonium bromide of 3:1 and calgon；
Wherein defoaming agent is made of polysiloxane, the Siloxane-Oxyalkylene Copolymers that weight ratio is 1:1.8；
Sand is the middle sand that grain composition area is 2nd area, and fineness modulus 2.3, clay content 2%, clod content is 0.45%；
Cobble-stone diameter is 5mm, and cement is PII52.5 cement；Flyash is low calcium II grades, fineness 8%, and water demand ratio 95% is burnt
Vector is 2%；Miberal powder is S95 grades of miberal powders, and the specific surface area of miberal powder is 400m2/ kg, 28 days activity indexs are 95%, fluidity
Than being 100%.
The preparation method of the early strong rapid-hardening concrete is the following steps are included: S1: by the cement of corresponding parts by weight, sand,
Stone, flyash and miberal powder are sufficiently mixed, and form the first mixture；
S2: the early strength agent, water-reducing agent, thickener of corresponding parts by weight being added to the water, are sufficiently mixed, and form the second mixture；
S3: being added dispersing agent, swelling agent and flow promortor in the second mixture obtained into step S2, forms third mixing
Object；
S4: the third mixture obtained in step S3 is added in the first mixture obtained into step S1, after being sufficiently mixed
Accelerator and defoaming agent is added, is sufficiently mixed, obtains early strong rapid-hardening concrete.
Embodiment 2-6: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, including component and each group
Divide corresponding parts by weight as shown in table 1.
The component and the corresponding parts by weight of each component of concrete in 1 embodiment 2-6 of table
Embodiment 7: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, early strength agent is 3.5:3.5 by mass ratio:
Polycarboxylate water-reducer, unsaturated polyester resin and triisopropanolamine, the sodium sulphate of 1.5:1.5 compounds.
Embodiment 8: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, early strength agent is 2.5 by mass ratio:
Polycarboxylate water-reducer, unsaturated polyester resin and triisopropanolamine, the sodium sulphate of 2.5:1:1 compounds.
Embodiment 9: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, accelerator includes following parts by weight
Component: 18 parts of polyacrylic acid, 10 parts of polymethylacrylic acid, 4 parts of bauxites, 3 parts of soda ash, 2 parts of quick limes, 4 parts of silicon powders and 3 parts
Zinc sulfate.
Embodiment 10: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, accelerator includes following weight
The component of part: 25 parts of polyacrylic acid, 15 parts of polymethylacrylic acid, 6 parts of bauxites, 4 parts of soda ash, 3 parts of quick limes, 6 parts of silicon powders and 5
Part zinc sulfate.
Embodiment 11: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, dispersing agent use mass ratio for
The cetyl trimethylammonium bromide and calgon of 3.5:1.5 compounds.
Embodiment 12: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, defoaming agent is 1 by weight ratio:
2.8 polysiloxane, Siloxane-Oxyalkylene Copolymers composition.
Embodiment 13: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, sand is that grain composition area is
The middle sand in 2nd area, fineness modulus 2.6, clay content 2.6%, clod content are 0.65%；Cobble-stone diameter is 25mm, and cement is
PII52.5 cement；Flyash is low calcium II grades, fineness 13%, water demand ratio 98%, loss on ignition 4.5%.
Comparative example 1: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, early strength agent is that mass ratio is 2:2:
Naphthalene water reducer, unsaturated polyester resin, triisopropanolamine and the sodium sulphate of 1:1 compounds.
Comparative example 2: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, early strength agent is that mass ratio is 2:2:
Polycarboxylate water-reducer, unsaturated polyester resin, triisopropanolamine and the sodium nitrite of 1:1 compounds.
Comparative example 3: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, early strength agent is that mass ratio is 2:2:
Polycarboxylate water-reducer, unsaturated polyester resin, triisopropanolamine and the triethanolamine of 1:1 compounds.
Comparative example 4: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, early strength agent is that mass ratio is 2:2:
Polycarboxylate water-reducer, unsaturated polyester resin, triisopropanolamine and the calcium nitrate of 1:1 compounds.
Comparative example 5: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, all polycarboxylic acids of early strength agent subtract
Aqua.
Comparative example 6: a kind of morning strong rapid-hardening concrete, the difference from embodiment 1 is that, do not contain accelerator.
The setting time measurement test of concrete is carried out referring to GB/T8076-2008 " concrete admixture ", agent on crack resistance of concrete
Compressive Strength test according to GB/T50080-2002 " Standard for test methods of properties of ordinary concrete mixture " carry out, detect each embodiment and
The performance of each prepared concrete of comparative example, the testing result of each embodiment is as shown in table 2, and the testing result of each comparative example is such as
Shown in table 3.
The test result of concrete coagulating time and compression strength made from 2 embodiment 1-13 of table
The setting time of concrete and the test result of compression strength made from 3 comparative example 1-8 of table
The presetting period of the concrete made from embodiment 1-13 it can be seen from the data comparison in table 2 and table 3 is shorter, in 2-
3min can be pre-hardening, and condenses and complete in 7-8min, and setting time is shorter, and early rapid-hardening by force made from embodiment 1-3 is mixed
Solidifying soil is greater than 8MPa in 2 hours intensity, and intensity when intensity was with 3 days at 7 days illustrates without too big variation at 3 days
Early strong rapid-hardening concrete made from embodiment 1-13 solidifies completely；And polycarboxylic acids is replaced using naphthalene water reducer in comparative example 1
Water-reducing agent, concrete initial set time obtained and final setting time are longer than embodiment 1-11, and compression strength is in each time
Point is lower than embodiment 1-11；Comparative example 2-4 uses sodium nitrite, triethanolamine and calcium nitrate substitution sodium sulphate respectively, there is table 2
It can be seen that with the data comparison in table 3, the presetting period that concrete is made in comparative example 2-4 is longer, and when final setting time and initial set
Between interval it is longer, compression strength is also poor compared with comparative example 1-13；Use polycarboxylate water-reducer as early strength agent in comparative example 5, though
It is capable of providing stronger morning intensity, but the presetting period is longer, and the time interval of initial set and final set is longer；In comparative example 6 not
Using accelerator, the initial set of concrete made from comparative example 6 and final setting time are longer, and early strength is poor.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of morning strong rapid-hardening concrete, it is characterised in that: by the material composition of following parts by weight: 177-192 parts of water, 202-
242 parts of cement, 734-830 parts of sands, 1002-1040 parts of stones, 51-65 parts of flyash, 60-77 parts of miberal powders, 5-11 parts of morning are strong
Agent, 4-9 parts of water-reducing agents, 2-7 parts of dispersing agents, 2-6 parts of accelerators, 1-5 parts of swelling agents, 1-5 parts of thickeners；
The early strength agent be mass ratio be 2-5:2-5:1-2:1-2 polycarboxylate water-reducer, unsaturated polyester resin, three isopropanols
Amine and sodium sulphate compound；
The accelerator comprises the following components in parts by weight: 10-25 parts of polyacrylic acid, 5-15 parts of polymethylacrylic acid, 2-6 parts of aluminium
Alumina, 1-4 part soda ash, 1-3 parts of quick limes, 2-6 parts of silicon powders and 1-5 parts of zinc sulfate.
2. morning strong rapid-hardening concrete according to claim 1, it is characterised in that: it further include 24-56 parts of defoaming agent, it is described
Defoaming agent is made of polysiloxane, the Siloxane-Oxyalkylene Copolymers that weight ratio is 1:1.8-2.8.
3. morning strong rapid-hardening concrete according to claim 1, it is characterised in that: further include parts by weight be 17-24 parts
Flow promortor, the flow promortor include at least one of lignite Wax particles, white oil.
4. morning strong rapid-hardening concrete according to claim 1, it is characterised in that: the dispersing agent uses cetyl three
Methyl bromide ammonium and calgon compounding are used as dispersing agent, wherein cetyl trimethylammonium bromide and calgon
Mass ratio is 3-4:1-2.
5. morning strong rapid-hardening concrete according to claim 1, it is characterised in that: the sand is that grain composition area is two
The middle sand in area, fineness modulus 2.3-2.6, clay content 2-2.6%, clod content are 0.45-0.65%.
6. morning strong rapid-hardening concrete according to claim 1, it is characterised in that: the cobble-stone diameter is 5-25mm, institute
Stating cement is PII52.5 cement.
7. morning strong rapid-hardening concrete according to claim 1, it is characterised in that: the flyash is low calcium II grades, carefully
Degree is 8-13%, water demand ratio 95-98%, loss on ignition 2-4.5%.
8. morning strong rapid-hardening concrete according to claim 1, it is characterised in that: the miberal powder is S95 grades of miberal powders, miberal powder
Specific surface area be 400m2/kg, 28 days activity indexs are 95%, and fluidity ratio is 100%.
9. a kind of preparation method of morning according to claim 1-8 strong rapid-hardening concrete, it is characterised in that: packet
Include following steps:
S1: the cement of corresponding parts by weight, sand, stone, flyash and miberal powder are sufficiently mixed, and form the first mixture；
S2: the early strength agent, water-reducing agent, thickener of corresponding parts by weight being added to the water, are sufficiently mixed, and form the second mixture；
S3: being added dispersing agent, swelling agent and flow promortor in the second mixture obtained into step S2, forms third mixing
Object；
S4: the third mixture obtained in step S3 is added in the first mixture obtained into step S1, after being sufficiently mixed
Accelerator and defoaming agent is added, is sufficiently mixed, obtains early strong rapid-hardening concrete.
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| CN111574154A (en) * | 2020-05-25 | 2020-08-25 | 威海冠宏商品混凝土有限公司 | Method for preparing conventional concrete by using high-grade cement |
| CN112608103A (en) * | 2020-12-18 | 2021-04-06 | 福建宏盛建设集团有限公司 | High-strength concrete for building construction |
| CN113526940A (en) * | 2021-06-29 | 2021-10-22 | 徐州工程学院 | Anti-freezing inorganic quick-setting grouting material and preparation method thereof |
| CN114477930A (en) * | 2022-03-01 | 2022-05-13 | 华创建筑设计有限公司 | C90 early strength resin concrete and preparation process thereof |
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2018
- 2018-08-22 CN CN201810963889.1A patent/CN109020373A/en active Pending
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| CN109608140A (en) * | 2019-01-23 | 2019-04-12 | 福州大学 | A kind of tunnel injection environmentally friendly cement concrete and its preparation and application |
| CN111320442A (en) * | 2020-03-31 | 2020-06-23 | 国网河南省电力公司内乡县供电公司 | Concrete for power transmission line construction |
| CN111574154A (en) * | 2020-05-25 | 2020-08-25 | 威海冠宏商品混凝土有限公司 | Method for preparing conventional concrete by using high-grade cement |
| CN112608103A (en) * | 2020-12-18 | 2021-04-06 | 福建宏盛建设集团有限公司 | High-strength concrete for building construction |
| CN113526940A (en) * | 2021-06-29 | 2021-10-22 | 徐州工程学院 | Anti-freezing inorganic quick-setting grouting material and preparation method thereof |
| CN114477930A (en) * | 2022-03-01 | 2022-05-13 | 华创建筑设计有限公司 | C90 early strength resin concrete and preparation process thereof |
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