CN108947318A - The wet surface layer additive of plate of mating formation and its preparation process - Google Patents
The wet surface layer additive of plate of mating formation and its preparation process Download PDFInfo
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- CN108947318A CN108947318A CN201810824463.8A CN201810824463A CN108947318A CN 108947318 A CN108947318 A CN 108947318A CN 201810824463 A CN201810824463 A CN 201810824463A CN 108947318 A CN108947318 A CN 108947318A
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Mat formation the wet surface layer additive of plate and its preparation process the invention discloses one kind, the wet surface layer additive of the plate of mating formation includes 180-235 parts of water-reducing agent；50-93 parts of slump retaining agent；2.5-3.3 parts of air entraining agent；0.2-0.8 parts of organic silicon defoamer；1-2.1 parts of sodium thiosulfate；5-16 parts of white sugar；15-35 parts of dextrin；0.3-0.8 parts of cellulose ether；10-20 parts of sodium carbonate；5-18 parts of thickener；657.6-674.6 parts of water.The wet surface layer additive of plate of mating formation in the present invention, which has, increases the wet fabric mobility of plate of mating formation, and does not sink to the bottom, and it is made to have longer the advantages of using the time；There are also the advantages for the early strength for increasing the plate of mating formation formed.
Description
Technical field
The present invention relates to road pavement technical field, the wet surface layer additive of plate more specifically, it relates to which one kind is mated formation
And its preparation process.
Background technique
The form of road pavement is more, generally use stone material, mat formation the materials such as plate/brick, cobblestone, concrete, timber into
Row construction.Plate/brick mat formation due to low cost, is laid with advantage simple, that plasticity is strong, occupies the big portion of road pavement
Point.Traditional plate/brick of mating formation is usually that integral prefabricated molding obtains, to have preferable globality, therefore, whole performance
Unanimously, poor for the adaptability of different characters of road.
The Chinese patent that Authorization Notice No. is CN206521660U, authorized announcement date is on 09 26th, 2017 discloses one
Kind of porous pavement is mated formation plate, including permeable finish coat and permeable substrate layer, and the permeable finish coat is layered on permeable substrate layer, institute
It states substrate layer and is built-in with reinforcing fiber layer and permeable aqueduct.
It is above-mentioned to form porous pavement by permeable finish coat and permeable substrate layer in the prior art and mat formation plate, it realizes saturating
The effect of water.And in terms of intensity, enhancing porous pavement paving is mainly improved by the reinforcing fiber layer being arranged in substrate layer
The intensity of loading board.However, for the integral strength for improving paving plate, it is very heavy necessary not only for the intensity for improving substrate layer
Want a bit, it is also necessary to improve the intensity of surface layer, and since surface layer than substrate layer has better smooth degree and bright degree,
Therefore, when improving the performance of surface layer, corresponding additive is generally selected to realize.
However, for improve paving plate integral strength, not only by the effect of reinforcing fiber, it is important that one
Point, it is also necessary to improve the integral strength of concrete, this is largely associated with additive.Therefore, a kind of to improve paving
The additive of the early strength of loading board has extensive commercial value.
Summary of the invention
In view of the deficienciess of the prior art, the purpose of the present invention one, which is to provide one kind, mats formation the wet surface layer of plate with additional
Agent has the advantages that improve the early strength for plate of mating formation.
To achieve the above object one, the present invention provides the following technical scheme that
One kind is mated formation the wet surface layer additive of plate, which is characterized in that the component including following parts by weight:
Water-reducing agent 180-235；
Slump retaining agent 50-93；
Air entraining agent 2.5-3.3；
Organic silicon defoamer 0.2-0.8；
Sodium thiosulfate 1-2.1；
White sugar 5-16；
Dextrin 15-35；
Cellulose ether 0.3-0.8；
Sodium carbonate 10-20；
Thickener 5-18；
657.6-674.6 parts of water.
Further preferably are as follows: the wet surface layer additive of plate of mating formation includes the component of following parts by weight:
Water-reducing agent 180-200；
Slump retaining agent 50-80；
Air entraining agent 2.5-3.0；
Organic silicon defoamer 0.2-0.4；
Sodium thiosulfate 1-1.5；
White sugar 5-10；
Dextrin 15-30；
Cellulose ether 0.5-0.8；
Sodium carbonate 10-15；
Thickener 5-15；
657.6-673 parts of water.
Through the above technical solutions, water-reducing agent can be under conditions of maintaining surface layer mortar divergence to be basically unchanged, reduction is mixed
Water is shared, can also have peptizaiton to cement granules, improve the mobility of concrete mix.Retarder is able to maintain mixed
Immediate loss, air entraining agent can not improve the workability of concrete mix, water-retaining property and cohesiveness to the solidifying soil slump, and improve mixed
Solidifying soil mixture mobility, introduces a large amount of equally distributed in concrete mix during mixing and stirring, be closed and stable micro-
Minute bubbles；And organic silicon defoamer can inhibit the generation of bubble during being mixed to form additive to a certain extent,
The air pocket occurred when concrete mix is added and mixes can be reduced.
It is studied (test two) to find, under retarder, air entraining agent, organic silicon defoamer collective effect, can make to be formed outer
Add agent that there is better stability, is not easy that liquid-phase system is made a large amount of bubble occur, when mixing with concrete mix, is not easy to make
Occurs excessive bubble in concrete mix, the closely knit sense of the concrete after making condensation is preferable.
White sugar and dextrin all have the effect for preferably delaying the condensation of concrete mix, and dextrin and cellulose ether are molten
All have certain viscosity after water, and can reach preferable Water-saving effect, therefore, in the application be added to suitable dextrin and
Cellulose ether is not easy to influence the water consumption of concrete, air content and setting time.
Sodium carbonate belongs to early strength agent, after concrete mix is added, helps to improve the early strength for board finish of mating formation,
After production can packing earlier, shorten resting period of the product in Turnround basket, improve the service efficiency of Turnround basket, save
Cost.
Studied (test one, test two) discovery, the compounding of sodium thiosulfate, sodium carbonate, white sugar, dextrin, cellulose ether
Under effect, it is not easy the phenomenon that sinking to the bottom component therein, and is made it have longer using the time；In addition, also helping
The early strength of concrete after increasing condensation.
Further preferably are as follows: the slump retaining agent is polycarboxylic-acid slump retaining agent.
Further preferably are as follows: the air entraining agent includes alkyl sulfonates air entraining agent, saponin class composite air entraining agent, modified pine
At least one of fragrant hot polymerization species air entraining agent.
Further preferably are as follows: alkyl sulfonates air entraining agent, soap of the air entraining agent by weight fraction ratio for 1-2: 1: 1-3
Plain class composite air entraining agent, modified rosin hot polymerization species air entraining agent composition.
Further preferably are as follows: the thickener includes polyacrylamide, polyvinyl alcohol, at least one in Sodium Polyacrylate
Kind.
Further preferably are as follows: polyacrylamide, polyethylene of the thickener by weight fraction ratio for 1-1.5: 1-2: 1
Alcohol, Sodium Polyacrylate composition.
Further preferably are as follows: the water-reducing agent includes silane-modified polycarboxylate water-reducer, citric acid-modified polycarboxylic acids diminishing
At least one of agent, hyperbranched modified polycarboxylic acid based water reducer.
Through the above technical solutions, polycarboxylic-acid slump retaining agent can reduce the slump-loss of concrete, extend concrete
Use the time.Silane-modified polycarboxylate water-reducer, citric acid-modified polycarboxylate water-reducer, hyperbranched modified polycarboxylic acid based water reducer
Respectively there is preferable dispersibility and water-reduction, after forming compound, it is mixed after concrete mix can be brighter
Improve water-reducing effect and early strength aobviously.And polycarboxylic-acid slump retaining agent changes with silane-modified polycarboxylate water-reducer, citric acid
Property polycarboxylate water-reducer, hyperbranched modified polycarboxylic acid based water reducer mating reaction together, effectively can overcome concrete mix to go out
Phenomena such as existing " grabbing bottom ", " hardened ".Polyacrylamide, polyvinyl alcohol, Sodium Polyacrylate can make the additive liquid phase to be formed
System keeps uniform and stable state, improves the mixing uniformity of concrete mix.
The purpose of the present invention two is to provide a kind of preparation process of wet surface layer additive of plate of mating formation.
To achieve the above object two, the present invention provides the following technical scheme that
A kind of preparation process of the wet surface layer additive of plate of mating formation, includes the following steps:
The cellulose ether of corresponding parts by weight, dextrin are first uniformly mixed by S1, obtain the first mixture；
Then water, the white sugar of corresponding parts by weight is successively added in S2 into agitated kettle, after mixing 10-15min, add step
The mixture obtained in S1 continuess to mix 5-8min, obtains the second mixture；
S2 system is added in the sodium thiosulfate of corresponding parts by weight, sodium carbonate, water-reducing agent, slump retaining agent, thickener, air entraining agent by S3
It in the second mixture obtained, is sufficiently mixed, is eventually adding the organic silicon defoamer of corresponding parts by weight, after mixing 5-8min, obtain
The wet surface layer additive of the plate that must mat formation.
Through the above technical solutions, due to white sugar dissolve it is slower, cellulose ether individually adds easy to knot groups, by step S1 with
The mixture of S2 step preparation smoothly can dissolve and disperse, and be less prone to clustering phenomena.In step S3, air entraining agent is added, prevents
Air entraining agent is first added, it is excessive that additive generates a large amount of bubbles in whipping process.During component is added, fully consider each
The dissolubility of kind raw material is added and stirs according to the difficulty or ease sequence of dissolution, the uniformity of mixing helped to improve, also one
Determine to reduce energy consumption during entirely production additive in degree, to save production cost.
In conclusion the invention has the following advantages:
After 1. retarder, air entraining agent, organic silicon defoamer cooperate, it can make the additive to be formed that there is better stability,
It is not easy that liquid-phase system is made a large amount of bubble occur, when mixing with concrete mix, is not easy to make to occur in concrete mix
The closely knit sense of more bubbles, the concrete after making condensation is preferable；
2. the flowing under the complex role of sodium thiosulfate, sodium carbonate, white sugar, dextrin, cellulose ether, with concrete mix
Property, and it is not easy the phenomenon that sinking to the bottom component therein, and make it have and longer use the time；In addition, additionally aiding
The early strength of concrete mix after increasing condensation.
Specific embodiment
Below with reference to embodiment, the present invention will be described in detail.
Embodiment 1: the wet surface layer additive of plate of mating formation, included component and its corresponding parts by weight are as shown in table 1,
And acquisition is made by the steps:
Cellulose ether, dextrin are first uniformly mixed by S1, obtain the first mixture；
Then water, white sugar is successively added in S2 into agitated kettle, after mixing 10min, add the mixture obtained in step S1,
5min is continuesd to mix, the second mixture is obtained；
The second mixture made from S2 is added in sodium thiosulfate, sodium carbonate, water-reducing agent, slump retaining agent, thickener, air entraining agent by S3
In, it is sufficiently mixed, is eventually adding organic silicon defoamer, after mixing 5min, obtain the wet surface layer additive of plate of mating formation.
Wherein, water-reducing agent is silane-modified polycarboxylate water-reducer；Slump retaining agent is polycarboxylic-acid slump retaining agent；Air entraining agent is by weight
Alkyl sulfonates air entraining agent that portion rate is 1: 1: 1, saponin class composite air entraining agent, modified rosin hot polymerization species air entraining agent group
At；Thickener is made of the polyacrylamide, polyvinyl alcohol, Sodium Polyacrylate that weight fraction ratio is 1.1: 2: 1.
Embodiment 2-6: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, included component and its phase
The parts by weight answered are as shown in table 1.
Embodiment 7: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, water-reducing agent is poly- for hyperbranched modification
Carboxylic acid water reducing agent.
Embodiment 8: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, water-reducing agent is poly- for citric acid-modified
Carboxylic acid water reducer and hyperbranched modified polycarboxylic acid based water reducer.
Embodiment 9: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, water-reducing agent is silane-modified poly- carboxylic
Sour water-reducing agent and hyperbranched modified polycarboxylic acid based water reducer.
Embodiment 10: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, water-reducing agent is weight fraction ratio
For 1: 1: 1 silane-modified polycarboxylate water-reducer, citric acid-modified polycarboxylate water-reducer, hyperbranched modified polycarboxylic acid system diminishing
Agent.
Embodiment 11: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, air entraining agent is base Sulfonates
Air entraining agent.
Embodiment 12: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, air entraining agent is weight fraction ratio
Base Sulfonates air entraining agent, saponin class composite air entraining agent for 1: 1.
Embodiment 13: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, in air entraining agent, alkylsulfonate
Class air entraining agent, saponin class composite air entraining agent, modified rosin hot polymerization species air entraining agent weight fraction ratio be 1: 1: 3.
Embodiment 14: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, in air entraining agent, alkylsulfonate
Class air entraining agent, saponin class composite air entraining agent, modified rosin hot polymerization species air entraining agent weight fraction ratio be 2: 1: 3.
Embodiment 15: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, thickener is hydrophobically modified third
Olefin(e) acid ester copolymer.
Embodiment 16: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, thickener is weight fraction ratio
For 1: 1: 1 polyacrylamide, polyvinyl alcohol, Sodium Polyacrylate.
Embodiment 17: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, in thickener, polyacrylamide
Amine, polyvinyl alcohol, Sodium Polyacrylate weight fraction ratio be 1: 2: 1.
Embodiment 18: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, in thickener, polyacrylamide
Amine, polyvinyl alcohol, Sodium Polyacrylate weight fraction ratio be 1.2: 1: 1.
Embodiment 19: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, in step S1, what is be first added has
The parts by weight of machine silicon defoaming agent are 0.1 part.
Embodiment 20: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, step S1 modification are as follows: by water,
Water-reducing agent, slump retaining agent, air entraining agent, organic silicon defoamer, sodium thiosulfate, white sugar, dextrin, cellulose ether, sodium carbonate together into
Row is sufficiently mixed, and forms mixture.
Comparative example 1: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, thiosulfuric acid is not included in component
Sodium, sodium carbonate, white sugar, dextrin, cellulose ether, thickener, preparation process are identical as the preparation method of embodiment 1.
Comparative example 2: the wet surface layer additive of plate of mating formation, the difference from embodiment 1 is that, by retarder, slump retaining agent, bleed
Agent, organic silicon defoamer, sodium thiosulfate, white sugar, dextrin, cellulose ether, sodium carbonate, thickener, water mix 15min together.
Test one: compressive strength test
Test method:
1. the preparation of base sample: P.O 52.5R cement 6.0kg, slag powders 1.0kg, sand 14.5kg, water consumption 3.5kg are used,
It stirs evenly, is poured into fabric storage hopper in mortar mixer, after the good wet fabric of the automatic cloth of equipment and dry bottom material, die head
Decline prepares paving plate to panel vibration pressurization is mated formation and vacuum is drawn water molding, and at 20 ± 2 DEG C of temperature, relative humidity is
It is conserved under conditions of 60%~80% or more, obtains base sample.
2, P.O 52.5R cement 6.0kg, slag powders 1.0kg, sand 14.5kg, water consumption the preparation of test specimen: are used
Corresponding additive 70g in 3.5kg, the embodiment 1-20 prepared, stirs evenly in mortar mixer, pours into fabric
In storage hopper, after the good wet fabric of the automatic cloth of equipment and dry bottom material, die head decline pressurizes to panel vibration of mating formation and vacuum is drawn water
Molding, it is identical with standard sample to prepare paving plate maintenance method, acquisition test specimen 1-20.
3, P.O 52.5R cement 6.0kg, slag powders 1.0kg, sand 14.5kg, water consumption the preparation of control sample: are used
Corresponding additive 70g in 3.5kg, the comparative example 1-2 prepared, stirs evenly in mortar mixer, pours into fabric
In storage hopper, after the good wet fabric of the automatic cloth of equipment and dry bottom material, die head decline pressurizes to panel vibration of mating formation and vacuum is drawn water
Molding, it is identical with standard sample to prepare paving plate maintenance method, acquisition test specimen 1-2.
4, according to the detection method for face brick intensity of satisfying the need in GB 28635-2012, respectively to base sample, test specimen 1-
20 and control sample 1-2 carries out the detection of the 3rd day, the 28th day compression strength.
Test result: test specimen 1-20, base sample, the compression strength of control sample 1-2 are as shown in table 2.
The compression strength of 2 test specimen 1-20 of table, base sample, control sample 1-2
As shown in Table 2, in 1-28 days, test specimen 1-20 changes with compression strength more better than base sample, and
The compression strength of control sample 1-2 be accordingly lower than base sample on day 1, the 3rd day, the 28th day when compression strength.Above-mentioned feelings
Condition illustrates the complex role of sodium thiosulfate, sodium carbonate, white sugar, dextrin, cellulose ether, can be improved it is mixed after coagulation
The early anti pressured intension of native test specimen.
Test two: air content and up time test
Using the concrete mix used in test sample preparation procedure in test one as test specimen 1-20；Using test
The concrete mix used in control sample preparation process in two is as control sample 1-2.
Test method has a fabric mortar mixture of test specimen 1-20 and control sample 1-2 to standing mix respectively, and 1 hour
After observe and record its steadiness；And per half an hour carries out mortar flowing to test specimen 1-20 and control sample 1-2 respectively
Degree test, Mortar'S Flowability detection method reference standard JC/T 985-2017, when divergence is less than 110mm, record be can be used
Time.
Test result: test specimen 1-20, the air content of control sample 1-2, up time are as shown in table 3.
3 test specimen 1-20 of table, the air content of control sample 1-2, up time
As shown in Table 3, in benchmark sample and test specimen 1-20 mortar mixture after standing 1 hour without sinking to the bottom or slightly sink
Bottom, and the up time (fluidity be greater than 110mm), in 3.0h-3.5h, and the mortar mixture of control sample 1 and 2 is sunk to the bottom seriously,
And the maximum up time be 2.0h, the additional symbols: retarder, air entraining agent, thickener, sodium thiosulfate, sodium carbonate,
When organic silicon defoamer collective effect, it can make the additive to be formed that there is better stability to be not easy that component therein is made to sink
The phenomenon that bottom, and make it have longer using the time.In addition, from the stability of control sample 2 and test specimen 1-20 and
Up time, used preparation process was more advantageous to the performance table for improving the wet surface layer additive of plate of mating formation in contrast
It is existing.
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)
- The wet surface layer additive of plate 1. one kind is mated formation, which is characterized in that the component including following parts by weight:180-235 parts of water-reducing agent；50-93 parts of slump retaining agent；2.5-3.3 parts of air entraining agent；0.2-0.8 parts of organic silicon defoamer；1-2.1 parts of sodium thiosulfate；5-16 parts of white sugar；15-35 parts of dextrin；0.3-0.8 parts of cellulose ether；10-20 parts of sodium carbonate；5-18 parts of thickener；657.6-674.6 parts of water.
- 2. the wet surface layer additive of plate of mating formation according to claim 1, which is characterized in that outside the wet surface layer of plate of mating formation Adding agent includes the component of following parts by weight:180-200 parts of water-reducing agent；50-80 parts of slump retaining agent；2.5-3.0 parts of air entraining agent；0.2-0.4 parts of organic silicon defoamer；1-1.5 parts of sodium thiosulfate；5-10 parts of white sugar；15-30 parts of dextrin；0.5-0.8 parts of cellulose ether；10-15 parts of sodium carbonate；5-15 parts of thickener；657.6-673 parts of water.
- 3. the wet surface layer additive of plate of mating formation according to claim 1 or 2, which is characterized in that the slump retaining agent is poly- carboxylic Acid system slump retaining agent.
- 4. the wet surface layer additive of plate of mating formation according to claim 3, which is characterized in that the air entraining agent includes alkyl sulphur At least one of Barbiturates air entraining agent, saponin class composite air entraining agent, modified rosin hot polymerization species air entraining agent.
- 5. the wet surface layer additive of plate of mating formation according to claim 4, which is characterized in that the air entraining agent is by parts by weight Than the alkyl sulfonates air entraining agent for 1-2:1:1-3, saponin class composite air entraining agent, modified rosin hot polymerization species air entraining agent group At.
- 6. the wet surface layer additive of plate of mating formation according to claim 4, which is characterized in that the thickener includes polypropylene At least one of amide, polyvinyl alcohol, Sodium Polyacrylate.
- 7. the wet surface layer additive of plate of mating formation according to claim 6, which is characterized in that the thickener is by parts by weight Than polyacrylamide, polyvinyl alcohol, the Sodium Polyacrylate composition for 1-1.5:1-2:1.
- 8. the wet surface layer additive of plate of mating formation according to claim 6, which is characterized in that the water-reducing agent includes that silane changes At least one of property polycarboxylate water-reducer, citric acid-modified polycarboxylate water-reducer, hyperbranched modified polycarboxylic acid based water reducer.
- 9. a kind of preparation process of the wet surface layer additive of plate of mating formation, feature described in any one of claim 1-2 exist In including the following steps:The cellulose ether of corresponding parts by weight, dextrin are first uniformly mixed by S1, obtain the first mixture；Then water, the white sugar of corresponding parts by weight is successively added in S2 into agitated kettle, after mixing 10-15min, add step The mixture obtained in S1 continuess to mix 5-8min, obtains the second mixture；S2 system is added in the sodium thiosulfate of corresponding parts by weight, sodium carbonate, water-reducing agent, slump retaining agent, thickener, air entraining agent by S3 It in the second mixture obtained, is sufficiently mixed, is eventually adding the organic silicon defoamer of corresponding parts by weight, after mixing 5-8min, obtain The wet surface layer additive of the plate that must mat formation.
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Application publication date: 20181207 |