CN108585578A - A kind of high intensity pervious concrete additive and preparation method thereof - Google Patents
A kind of high intensity pervious concrete additive and preparation method thereof Download PDFInfo
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- CN108585578A CN108585578A CN201810458205.2A CN201810458205A CN108585578A CN 108585578 A CN108585578 A CN 108585578A CN 201810458205 A CN201810458205 A CN 201810458205A CN 108585578 A CN108585578 A CN 108585578A
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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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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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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
Abstract
A kind of high intensity pervious concrete additive of present invention offer and preparation method thereof, is related to technical field of concrete.It includes：0.5 3 parts of micro mist material, 14 parts of ammonium sulfate, 14 parts of potassium sulfate, 14 parts of sodium sulphate, 14 parts of magnesium chloride, 6 12 parts of ferric sulfate, 14 parts of ferrous sulfate, 9 14 parts of calcium chloride, 0.05 0.3 parts of sodium gluconate, 55 70 parts of water.The concrete additive main component is inorganic matter, and small toxicity, anti-aging property is good.Contain a large amount of metal ions in the additive, and be added with micro mist material, can effectively enhance the intensity and water penetration of pervious concrete.It is simple for process, the period is short, at low cost moreover, it relates to the preparation method of the additive, it is suitable for industrialized production.
Description
Technical field
The present invention relates to technical field of concrete, and more particularly to a kind of high intensity pervious concrete additive and its preparation
Method.
Background technology
With the raising of China's level of economic development, in recent years, Development of Real Estate is also very rapid, and road pavement is increasingly
More, Permeable stratum area is continuously increased, and the coverage rate of wherein domestic city road has reached 7%-15%, big city about more than
20%, the problems such as urban waterlogging, urban heat island, becomes increasingly conspicuous.It comes into being for this purpose, " sponge city " is built, high intensity height is permeable
The construction on road surface also results in everybody concern.Pervious concrete is by aggregate, cement minerals admixture, water, additive mix
Made of a kind of common road pavement building materials, be build " sponge city " optimal material.However, due to the limit of various conditions
System is at present also greatly improved space to the research and extension of pervious concrete.
Research for high intensity water penetrative road concrete, mainly also resides in the research and development of additive, Additive Properties it is good
The bad performance for directly influencing porous pavement.Currently, the research about pervious concrete additive has caused researcher
Attention, as patent No. CN206052494U is prepared for the good water-permeable brick of water penetration using high hydroscopic resin；The patent No.
CN103819125B, CN104496393A, CN105924025A, CN105948554A decile do not propose different permeable coagulations
Soil additive formula, prepared additive improve resistance to compression, flexural strength and its water penetration of concrete to a certain extent.
But it improves also have certain distance in intensity and water penetration at the same time.In addition, high-molecular organic material is added in concrete,
Road surface is easy to cause organic material and volatilizes toxicant, or due to organic material aging through being exposed to the sun, after long-time use
Lead to the declines such as intensity, water permeability.
Invention content
The purpose of the present invention is to provide a kind of high intensity pervious concrete additive, this additive, which has, ensures that road is each
The water-permeable and water retention that concrete is effectively improved under the premise of item physical index, improves compression strength, the wearability of cement.
Another object of the present invention is to provide a kind of preparation method of high intensity pervious concrete additive, technique letters
It is single, it is easy to operate.
The present invention solves its technical problem using following technical scheme to realize.
The present invention proposes a kind of high intensity pervious concrete additive, in parts by weight, including：Micro mist material 0.5-3
Part, 1-4 parts of ammonium sulfate, 1-4 parts of potassium sulfate, 1-4 parts of sodium sulphate, 1-4 parts of magnesium chloride, 6-12 parts of ferric sulfate, ferrous sulfate 1-4
Part, 9-14 parts of calcium chloride, 0.05-0.3 parts of sodium gluconate, 55-70 parts of water.
The present invention proposes a kind of preparation method of above-mentioned high intensity pervious concrete additive, includes the following steps：
S1, by 1/4~1/2 ammonium sulfate, 1/4~1/2 potassium sulfate, 1/4~1/2 magnesium chloride,
1/4~1/2 sodium sulphate, 1/4~1/2 ferrous sulfate, 1/4~1/2 ferric sulfate, 1/2~3/4 institute
State calcium chloride, 1/2~1/4 the sodium gluconate sequentially add in water and dissolved, is then obtained after warm stirring
One mixed liquor；
1/4~1/2 micro mist material is added in first mixed liquor, second is obtained after warm stirring by S2
Mixed liquor；
S3, by the remaining ammonium sulfate, the potassium sulfate, the magnesium chloride, the sodium sulphate, the ferrous sulfate,
The ferric sulfate, the calcium chloride, the sodium gluconate are added sequentially in second mixed liquor, after warm stirring
To third mixed liquor；
The remaining micro mist material is added in the third mixed liquor by S4, and it is saturating to obtain high intensity after warm stirring
Water coagulation soil additive.
The advantageous effect of the high intensity pervious concrete additive of the embodiment of the present invention and preparation method thereof is：
Pervious concrete additive prepared by the present invention is in addition to admixture concrete, remaining is inorganic matter, small toxicity,
Anti-aging property is good.Contain a large amount of metal ions in the additive, contributes to the effective ion being fully electrolysed in cement, accelerate water
Mud hydration reaction forms network-like crystal structure, enhances the intensity of pervious concrete.In addition, in the mixed liquor of metal ion
Micro mist material is added in batches, the intensity and water penetration of concrete can be further increased.And preparation method letter of the present invention
List, period are short, at low cost, are suitable for industrialized production.
Specific implementation mode
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, builds according to normal condition or manufacturer
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
High intensity pervious concrete additive of the embodiment of the present invention and preparation method thereof is specifically described below.
The embodiment of the present invention provides a kind of high intensity pervious concrete additive, in parts by weight, including：Micro mist material
0.5-3 parts, 1-4 parts of ammonium sulfate, 1-4 parts of potassium sulfate, 1-4 parts of sodium sulphate, 1-4 parts of magnesium chloride, 6-12 parts of ferric sulfate, ferrous sulfate
1-4 parts, 9-14 parts of calcium chloride, 0.05-0.3 parts of sodium gluconate, 55-70 parts of water.
In pervious concrete additive provided in an embodiment of the present invention, other than sodium gluconate is as cement blending agent,
Remaining is inorganic constituents, utmostly avoids adversely affecting caused by macromolecule organic material.
Further, in a preferred embodiment of the present invention, it is part that micro mist material, which is 1-2, and ammonium sulfate is 2-4 parts, and potassium sulfate is
2-4 parts, sodium sulphate is 2-4 parts, and magnesium chloride is 2-4 parts, and ferric sulfate is 8-10 parts, and ferrous sulfate is 2-4 parts, calcium chloride 10-
12 parts, sodium gluconate is 0.05-0.3 parts, and water is 60-65 parts.Under the ratio, intensity preferably permeable coagulation can be obtained
Soil.
Further, in a preferred embodiment of the present invention, micro mist material be selected from miberal powder, flyash, SILICA FUME, molecular sieve powder,
It is one or more in galapectite powder, dolomite dust, carbonization calcium powder, hydrotalcite, carbonized celulose.Above-mentioned powder all has good
Good water conservation and water guiding action, can filling concrete gap, react with the hydrated product of cement, enhancing concrete strength.
Further, in a preferred embodiment of the present invention, micro mist material includes the first powder and the second powder, the choosing of the first powder
From miberal powder, flyash, SILICA FUME, molecular sieve powder, galapectite powder, dolomite dust, be carbonized one or both of calcium powder, and second
Powder is hydrotalcite/plant cellulose carbide.Further, the mass ratio of the first powder and the second powder is 2:1, the first powder
Material and the second powder have flourishing pore structure, and under aforementioned proportion, compounding effect is more preferable.
Further, in a preferred embodiment of the present invention, the preparation method of hydrotalcite/plant cellulose carbide is：It will
Hydrotalcite is dispersed in water, and anion surfactant is added, and after 1~2h is stirred in water bath with thermostatic control, hydrotalcite mass fraction is added
15~30% plant cellulose obtains mixed solution；Mixed solution is transferred in reaction kettle, under the conditions of 260~280 DEG C
1~1.5h of hydrothermal carbonization, then separating, washing, drying.Preferably, anion surfactant selection enuatrol, dosage are
The 4~5% of hydrotalcite quality.
Further, plant cellulose selects cellulose made of the herbaceous plant such as straw, reed, maize straw.Such as
Straw is truncated into segment, is subsequently placed in autoclave, is warming up to 160~180 DEG C, pressure 0.8MPa, processing
30min obtains processed material.By processed material in 1.6wt%NaOH and 0.05wt% anthraquinone mixed solutions, after 25 DEG C of stirring 0.5h
It is transferred in electrothermal revolution reaction kettle, is warming up to 120 DEG C, reaction 1.5h obtains plant cellulose.
It is coupled plant cellulose and hydrotalcite with enuatrol, then carries out hydrothermal carbonization, plant cellulose intercalation enters neatly
Shi Zhong, and stable pore structure is formed in carbonisation, specific surface area is up to 250m2/ g or more, and be used in concrete,
Its tensile strength can be improved.
The embodiment of the present invention provides a kind of preparation method of above-mentioned high intensity pervious concrete additive, including following step
Suddenly：
S1, by 1/4~1/2 ammonium sulfate, 1/4~1/2 potassium sulfate, 1/4~1/2 magnesium chloride, 1/4~1/2 sulphur
Sour sodium, 1/4~1/2 ferrous sulfate, 1/4~1/2 ferric sulfate, 1/2~3/4 calcium chloride, 1/2~1/4 gluconic acid
Sodium, which sequentially adds in water, to be dissolved, and then obtains the first mixed liquor after warm stirring；
1/4~1/2 micro mist material is added in the first mixed liquor, the second mixed liquor is obtained after warm stirring by S2；
S3, by remaining ammonium sulfate, potassium sulfate, magnesium chloride, sodium sulphate, ferrous sulfate, ferric sulfate, calcium chloride, glucose
Sour sodium is added sequentially in the second mixed liquor, and third mixed liquor is obtained after warm stirring；
Remaining micro mist material is added in third mixed liquor, high intensity pervious concrete is obtained after warm stirring by S4
Additive.
Feeding operation is carried out according to fixed sequence, is on the one hand to ensure the dissolving of raw material in water, for forming quality
The pervious concrete additive of stable homogeneous has important influence.On the other hand, it avoids raw material in adding procedure, forms nothing
The sediment of method dissolving.And sodium gluconate is added again after completing the charging of metal salt, avoid the stability for influencing additive.This
In inventive embodiments, inorganic salt raw materials and the sodium gluconates such as the ammonium sulfate of a part is first added, is added after mixing a part of micro-
Powder is mixed, and is then mixed again to remaining inorganic salt raw material, sodium gluconate, micro mist material, can be ensured micro mist
Expect fine dispersion and mixing in addition, avoids that micro mist material itself is caused excessively to assemble, be unfavorable for guarantor of the additive to concrete
The promotion for the performances such as water is permeable.
Further, in a preferred embodiment of the present invention, it in step S1 and step S3, is all carried out after a kind of raw material is often added
Stirring operation, mixing time are 30~60min.
Further, in a preferred embodiment of the present invention, in step S1 and step S3, successively by ammonium sulfate, potassium sulfate, chlorine
Change magnesium, during sodium sulphate, ferrous sulfate, ferric sulfate, calcium chloride are added to the water, is all stirred after a kind of raw material is often added
To being completely dissolved.
Further, in a preferred embodiment of the present invention, in step S1,15~25h, step are stirred under the conditions of 60~85 DEG C
In rapid S3,25~35h is stirred under the conditions of 60~85 DEG C.
Further, in a preferred embodiment of the present invention, in step S2,2~5h, step are stirred under the conditions of 60~85 DEG C
In S4,2~5h is stirred under the conditions of 30~45 DEG C.
The temperature and time of insulated and stirred is controlled, the pervious concrete nature's mystery of quality stable homogeneous can be obtained
Agent.During insulated and stirred, pay attention to controlling temperature, the excessively high excessive vaporization that can cause moisture of temperature influences the quality of product；
Temperature is too low, and raw material is not easily dissolved.Particularly, using above-mentioned agitating procedure, enable to concrete additive longer
It keeps stablizing in time.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of strong concrete additive provided in this embodiment：
Formula：0.6 part of micro mist material, 1 part of ammonium sulfate, 1 part of potassium sulfate, 1 part of sodium sulphate, 1 part of magnesium chloride, 7 parts of ferric sulfate, sulphur
It is sour 1 part ferrous, 9 parts of calcium chloride, 0.05 part of sodium gluconate, 70 parts of water.Micro mist material is 0.2 part of SILICA FUME (0.2 μm), flyash
0.4 part of (0.2 μm).
Preparation process is：
(1) by 0.25 part of ammonium sulfate, 0.25 part of potassium sulfate, 0.25 part of sodium sulphate, 0.25 part of magnesium chloride, 1.75 parts of sulfuric acid
Iron, 0.25 part of ferrous sulfate, 4.5 parts of calcium chloride, 0.0125 part of sodium gluconate sequentially add in 70 parts of water, and a kind of original is often added
Material stirring 30min.It after charging, is transferred in water bath with thermostatic control reaction kettle, stirs 20h under the conditions of 70 DEG C, obtain mixed liquor.
(2) 0.3 part of micro mist material is added in the mixed liquor of step (1), stirs 2h under the conditions of 70 DEG C, is mixed
Liquid.
(3) by remaining ammonium sulfate, potassium sulfate, sodium sulphate, magnesium chloride, ferric sulfate, ferrous sulfate, calcium chloride, glucose
Sour sodium is added sequentially in the mixed liquor in step (2), and a kind of raw material stirring 50min is often added.After charging, in 70 DEG C of items
30h is stirred under part.
(4) remaining micro mist material is added in the mixed liquor in step (3), 3h is stirred under the conditions of 35 DEG C.
Embodiment 2
The present embodiment provides a kind of strong concrete additives：
Formula：0.6 part of micro mist material, 1 part of ammonium sulfate, 1 part of potassium sulfate, 1 part of sodium sulphate, 1 part of magnesium chloride, 7 parts of ferric sulfate, sulphur
It is sour 1 part ferrous, 9 parts of calcium chloride, 0.05 part of sodium gluconate, 70 parts of water.Micro mist material is 0.2 part of SILICA FUME (0.2 μm), neatly
Stone/0.4 part of plant cellulose carbide.
Wherein, the preparation method of hydrotalcite/plant cellulose carbide is：10g hydrotalcites are dispersed in 200ml water,
0.5g enuatrols are added, after 75 DEG C of stirring in water bath 1h, 2g straw celluloses is added and obtain mixed solution；Mixed solution is transferred to
In reaction kettle, then hydrothermal carbonization 1h under the conditions of 270 DEG C is detached, is washed, is dried.
Preparation process is：With embodiment 1.
Embodiment 3
A kind of strong concrete additive provided in this embodiment：
Formula：1.5 parts of micro mist material, 2.5 parts of ammonium sulfate, 2.5 parts of potassium sulfate, 2.5 parts of sodium sulphate, 2.5 parts of magnesium chloride, sulfuric acid
9 parts of iron, 3 parts of ferrous sulfate, 11 parts of calcium chloride, 0.28 part of sodium gluconate, 64 parts of water.Micro mist material is molecular sieve powder (0.2 μm)
0.5 part, hydrotalcite/1 part of plant cellulose carbide (with embodiment 2).
Preparation process is：
(1) by 1.25 parts of ammonium sulfate, 1.25 parts of potassium sulfates, 1.25 parts of sodium sulphate, 1.25 parts of magnesium chlorides, 4.5 parts of ferric sulfate,
1.5 parts of ferrous sulfate, 5.5 parts of calcium chloride, 0.14 part of sodium gluconate sequentially add in 64 parts of water, and a kind of raw material stirring is often added
50min.It after charging, is transferred in water bath with thermostatic control reaction kettle, stirs 20h under the conditions of 70 DEG C, obtain mixed liquor.
(2) 0.75 part of micro mist material is added in the mixed liquor of step (1), stirs 2h under the conditions of 70 DEG C, is mixed
Liquid.
(3) by remaining ammonium sulfate, potassium sulfate, sodium sulphate, magnesium chloride, ferric sulfate, ferrous sulfate, calcium chloride, glucose
Sour sodium is added sequentially in the mixed liquor in step (2), and a kind of raw material stirring 40min is often added.After charging, in 70 DEG C of items
30h is stirred under part.
(4) remaining micro mist material is added in the mixed liquor in step (3), 3h is stirred under the conditions of 35 DEG C.
Comparative example 1
A kind of pervious concrete additive that this comparative example provides：
Formula：4 parts of ammonium sulfate, 4 parts of sodium sulphate, 4 parts of magnesium chloride, 4 parts of potassium sulfate, 5 parts of ferrous sulfate, 4 parts of ferric sulfate, sulphur
15 parts of sour calcium, 0.3 part of sodium gluconate, 0.3 part of polyacrylamide, 59.4 parts of water.
Preparation method is：
(1) according to ammonium sulfate, potassium sulfate, magnesium chloride, sodium sulphate, ferrous sulfate, ferric sulfate, calcium sulfate, sodium gluconate,
The sequence of polyacrylamide is dissolved, after a kind of raw material is often added stirring be no less than 10min.And pay attention to ensureing that sulfuric acid is being added
Mixed liquor is stirred to solution state after charging each time before calcium.Mixed liquor stirred evenly after charging spare.
(2) gained mixed liquor in step (1) is stirred evenly, is added in water bath with thermostatic control reaction kettle, sets reaction kettle water
Bath temperature is 65 DEG C, adjusts reaction kettle mixing speed and starts to carry out continuous insulated and stirred to mixed liquor.After insulated and stirred 48h,
Obtain pervious concrete additive.
Comparative example 2
Formula：1.5 parts of micro mist material, 2.5 parts of ammonium sulfate, 2.5 parts of potassium sulfate, 2.5 parts of sodium sulphate, 2.5 parts of magnesium chloride, sulfuric acid
9 parts of iron, 3 parts of ferrous sulfate, 11 parts of calcium chloride, 0.28 part of sodium gluconate, 64 parts of water.Micro mist material is molecular sieve powder (0.2 μm)
0.5 part, hydrotalcite/1 part of plant cellulose carbide (with embodiment 2).
Preparation method：
(1) by ammonium sulfate, potassium sulfate, sodium sulphate, magnesium chloride, ferric sulfate, ferrous sulfate, calcium chloride, sodium gluconate according to
It is secondary to be added to the water, a kind of raw material stirring 50min is often added.It after charging, is transferred in water bath with thermostatic control reaction kettle, in 70 DEG C of items
50h is stirred under part, obtains mixed liquor.
(2) micro mist material is added in the mixed liquor of step (1), stirs 5h under the conditions of 70 DEG C, obtains mixed liquor.
Test example 1
By 5.5:1 proportioning is pre-configured by building stones and cement, and it is 1% Examples 1 to 3 and right that mass fraction, which is added,
The concrete additive that ratio 1~2 provides, obtains test sample, and test sample is made the cube that the length of side is 150mm and is tried
Block spontaneously dries after standard curing 28d.Then constant temperature is handled 3 days under 80 DEG C of high temperature, is surveyed by the method for JC/T945-2005
It is fixed.Test result is as shown in table 1：
1. performance parameter table of table
| Mass loss | 28d compression strength (MPa) | Coefficient of permeability (mm/s) | |
| Embodiment 1 | 0 | 7.5 | 3.6 |
| Embodiment 2 | 0 | 7.7 | 3.9 |
| Embodiment 3 | 0 | 8.1 | 4.5 |
| Comparative example 1 | 8.7% | 6.2 | 3.1 |
| Comparative example 2 | 0 | 7.8 | 4.1 |
In conclusion as seen from Table 1, under the proportioning of embodiment 3, reaching better intensity and permeable effect.When micro mist material
For the mixture of molecular sieve powder and hydrotalcite/plant cellulose carbide when, the intensity and water penetration of concrete can be reinforced.This
Outside, inventor, which tests, finds, after the concrete additive of comparative example 1~2 is placed 6 months, the generation of concrete additive is muddy
It is turbid, and effect is deteriorated.And the character and performance of the concrete additive of Examples 1 to 3 do not change.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of high intensity pervious concrete additive, which is characterized in that in parts by weight, including：Micro mist material 0.5-3
Part, 1-4 parts of ammonium sulfate, 1-4 parts of potassium sulfate, 1-4 parts of sodium sulphate, 1-4 parts of magnesium chloride, 6-12 parts of ferric sulfate, ferrous sulfate 1-4
Part, 9-14 parts of calcium chloride, 0.05-0.3 parts of sodium gluconate, 55-70 parts of water.
2. high intensity pervious concrete additive according to claim 1, which is characterized in that the micro mist material is that 1-2 is
Part, the ammonium sulfate is 2-4 parts, and the potassium sulfate is 2-4 parts, and the sodium sulphate is 2-4 parts, and the magnesium chloride is 2-4 parts, institute
It is 8-10 parts to state ferric sulfate, and the ferrous sulfate is 2-4 parts, and the calcium chloride is 10-12 parts, and the sodium gluconate is
0.05-0.3 parts, the water is 60-65 parts.
3. high intensity pervious concrete additive according to claim 1, which is characterized in that the micro mist material is selected from mine
In powder, flyash, SILICA FUME, molecular sieve powder, galapectite powder, dolomite dust, carbonization calcium powder, hydrotalcite, carbonized celulose
It is one or more.
4. high intensity pervious concrete additive according to claim 1, which is characterized in that the micro mist material includes first
Powder and the second powder, first powder are selected from miberal powder, flyash, SILICA FUME, molecular sieve powder, galapectite powder, dolomite
One or both of powder, carbonization calcium powder, second powder is hydrotalcite/plant cellulose carbide.
5. high intensity pervious concrete additive according to claim 4, which is characterized in that the hydrotalcite/plant is fine
The preparation method of the plain carbide of dimension is：Hydrotalcite is dispersed in water, anion surfactant, water bath with thermostatic control stirring 1 is added
After~2h, the plant cellulose that the hydrotalcite mass fraction 15~30% is added obtains mixed solution；By the mixed solution
It is transferred in reaction kettle, 1~1.5h of hydrothermal carbonization under the conditions of 260~280 DEG C, then separating, washing, drying.
6. a kind of preparation method of high intensity pervious concrete additive as claimed in any one of claims 1 to 5, wherein, feature
It is, includes the following steps：
S1, by 1/4~1/2 ammonium sulfate, 1/4~1/2 potassium sulfate, 1/4~1/2 magnesium chloride, 1/4~
1/2 sodium sulphate, 1/4~1/2 ferrous sulfate, 1/4~1/2 ferric sulfate, 1/2~3/4 chlorine
Change calcium, 1/2~1/4 the sodium gluconate sequentially add in water and dissolved, it is mixed that first is then obtained after warm stirring
Close liquid；
1/4~1/2 micro mist material is added in first mixed liquor, the second mixing is obtained after warm stirring by S2
Liquid；
S3, by the remaining ammonium sulfate, potassium sulfate, the magnesium chloride, the sodium sulphate, the ferrous sulfate, described
Ferric sulfate, the calcium chloride, the sodium gluconate are added sequentially in second mixed liquor, and is obtained after warm stirring
Three mixed liquors；
The remaining micro mist material is added in the third mixed liquor by S4, and it is permeable mixed that high intensity is obtained after warm stirring
Solidifying soil additive.
7. the preparation method of high intensity pervious concrete additive according to claim 6, which is characterized in that step S1 and
In step S3, it is all stirred operation after a kind of raw material is often added, mixing time is 30~60min.
8. the preparation method of high intensity pervious concrete additive according to claim 6, which is characterized in that step S1 and
In step S3, successively by the ammonium sulfate, potassium sulfate, the magnesium chloride, the sodium sulphate, the ferrous sulfate, described
During ferric sulfate, the calcium chloride are added to the water, often it is added after a kind of raw material and is all stirred to being completely dissolved.
9. the preparation method of high intensity pervious concrete additive according to claim 6, which is characterized in that step S1
In, under the conditions of 60~85 DEG C in stirring 15~25h, step S3,25~35h is stirred under the conditions of 60~85 DEG C.
10. the preparation method of high intensity pervious concrete additive according to claim 6, which is characterized in that step S2
In, under the conditions of 60~85 DEG C in stirring 2~5h, step S4,2~5h is stirred under the conditions of 30~45 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942216A (en) * | 2019-02-27 | 2019-06-28 | 江苏卓坤新型环保材料有限公司 | A kind of preparation method of inorganic type water-permeable and water retention cement concrete gelling agent |
| CN112876993A (en) * | 2021-02-03 | 2021-06-01 | 杭州世子合德生物科技有限公司 | Negative ion coating material and preparation method thereof |
| CN113045807A (en) * | 2021-03-22 | 2021-06-29 | 戚皎珺 | Degradable butyronitrile latex for gloves and preparation method thereof |
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| CN113045807A (en) * | 2021-03-22 | 2021-06-29 | 戚皎珺 | Degradable butyronitrile latex for gloves and preparation method thereof |
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