CN108623245A - pervious concrete and preparation method thereof - Google Patents
pervious concrete and preparation method thereof Download PDFInfo
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- CN108623245A CN108623245A CN201710183309.2A CN201710183309A CN108623245A CN 108623245 A CN108623245 A CN 108623245A CN 201710183309 A CN201710183309 A CN 201710183309A CN 108623245 A CN108623245 A CN 108623245A
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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
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
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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
- C04B2111/00267—Materials permeable to vapours or gases
-
- 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
-
- 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
- C04B2111/40—Porous or lightweight materials
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of permeable concretes, including following components indicated with parts by weight:340 350 parts of cement;50 60 parts of miberal powder;45 55 parts of sand;1,000 1100 parts of stone;67 parts of additive;100 110 parts of water;Additive includes water-reducing agent, and it is 1 that wherein water-reducing agent, which includes parts by weight,:1 maleopimaric anhydride and maleic anhydride type carboxylic acid water reducer.Maleic anhydride type carboxylic acid water reducer and binder are added in pervious concrete, increases the intensity of pervious concrete.
Description
Technical field
The present invention relates to a kind of pervious concretes and preparation method thereof.
Background technology
Coarse aggregate surface in pervious concrete coats one layer of slurry, and constructs to be formed by the overlap joint between coarse aggregate
Mushy honeycomb structure has air-and water-permeable performance.
Cement and flyash are wrapped to form basic overlap joint aggregate outside coarse aggregate in common pervious concrete, overlap
It is overlapped in a manner of point contact between aggregate, overlapped, and area is smaller, and the overlap joint site connection overlapped between aggregate is weaker, by outer
It is easily destroyed fracture after power, causes the intensity of pervious concrete poor.
Invention content
The purpose of the present invention is to provide a kind of pervious concretes and preparation method thereof, and Malaysia is added in pervious concrete
Acid anhydrides type carboxylic acid water reducer and binder increase the intensity of pervious concrete.
The present invention above-mentioned purpose technical scheme is that:A kind of permeable concrete, including under
State the component indicated with parts by weight:340-350 parts of cement;50-60 parts of miberal powder;45-55 parts of sand;1000-1100 parts of stone;Outside
Add 6-7 parts of agent;100-110 parts of water;Additive includes water-reducing agent, and it is 1 that wherein water-reducing agent, which includes parts by weight,:1 Malaysia Korean pine
Acid anhydrides and maleic anhydride type carboxylic acid water reducer.
Using above technical scheme, the basic overlap joint skeleton of stone and sand as pervious concrete, and wherein stone
Dosage be 20 times of sand, be mutually lapped between stone and be built into permeable gap, after mixing and stirring into concrete, water is gentle can be with
Through the gap between stone to ensure the air-and water-permeable performance of concrete.A small amount of sand, cement and miberal powder and water mix and stir it
After form slurry, be wrapped in the outside of stone and sand, increase the caking property between stone and sand, and then increase between aggregate
Bond strength.
The water-cement ratio of concrete reduces the dosage of water 0.27 or so, increases slurry viscosity, it is easier in sand and stone
Sub external package, and certain air-and water-permeable hole is formed, enhance the workability of concrete, reduces bleeding.
The water-reducing agent added in concrete is maleopimaric anhydride and maleic anhydride type carboxylic acid water reducer, in the water-reducing agent
Containing a large amount of carboxyl and sulfonic group, there are good peptizaiton, cement to disperse more uniformly, to reduce water in water cement
Dosage.Rosin is introduced when preparing maleopimaric anhydride, and a large amount of bubble formation concrete dynamic modulus concrete are introduced in concrete.
Further, additive further includes binder, and the weight ratio of carboxylic acid water reducer and binder is 2:1;Binder packet
It is 1 to include weight ratio:1 gelatin and guar gum.
Using above technical scheme, the additive in concrete also adds in addition to using maleic anhydride type carboxylic acid water reducer
Enter binder, binder uses gelatin and guar gum, and guar gum is soluble easily in water, and has good adhesive property, slurry
Expect package aggregate that can be even closer, further increases the gap between aggregate, while itself is spawn, is dissolved in
Three-dimensional network crosslinking shape structure can be formed after water, be adhered between the aggregate of gelation, both be may insure pervious concrete
Water penetration, while the intensity of skeleton can be increased again.
Further, stone uses the rubble that grain size is 5-25mm continuous gradings.
Using above technical scheme, using the rubble of 5-25mm continuous gradings, the rubble of different-grain diameter is mutually lapped, grain size
Smaller rubble is filled between the overlap joint gap that the larger rubble of grain size is formed, it is ensured that between aggregate while air-and water-permeable performance
Improve the intensity of aggregate.
Further, sand is the areas II nature medium sand.
Further, cement uses 42.5 grades of portland cements.
Further, miberal powder is S95 grades of ground granulated blast furnace slags.
Using above technical scheme, overlapped using the areas II nature medium sand and stone, if using fine sand, taking between stone
Gap reduction is connect, corresponding air-and water-permeable performance can reduce;If using coarse sand, coarse sand and stone overlap to form aggregate, aggregate
Between gap increase, bond strength declined.It is mixed and stirred using 42.5 grades of portland cements and S95 grades of ground granulated blast furnace slags
As sizing material, the workability of concrete is more preferable, and the adhesion strength between aggregate increases.
Preferably, a kind of permeable concrete, including following components indicated with parts by weight:344 parts of cement;Miberal powder 56
Part;50 parts of sand;1067 parts of stone;6.5 parts of additive;108 parts of water.
By test of many times, there is good workability using concrete made from the proportioning, be not easy to be layered, it is not easy to secrete
Water, while there is good air-and water-permeable performance.
Further, a kind of preparation method of permeable concrete, includes the following steps:
Step 1:Miberal powder, sand and stone are homogenized in advance in respective former material feed bin;
Step 2:35 DEG C are heated water to, and gelatin and obtained first gel solution of guar gum are added in water;Wait for that first is solidifying
Sol solution is cooled to room temperature and then is added maleopimaric anhydride and maleic anhydride type carboxylic acid water reducer is uniformly mixed and is made second
Gel solution;
Step 3:Cement, miberal powder, sand and stone are poured into and mix 2min in forced mixer, is poured into step 2 later
The second gel solution in stirring 6min be made permeable concrete.
Using above technical scheme, miberal powder, sand and stone are homogenized in advance, sand and stone are homogenized in advance, are increased
Raw material surface roughness, aggregate is added to be easy hanging.Water is heated to 35 DEG C of dissolving gelatin, guar gum, maleopimaric anhydride and horse
Carry out acid anhydrides type carboxylic acid water reducer and the second gel solution is made.Cement, miberal powder, sand, stone are poured into mandatory blender later
Son and the second gel solution stir evenly, and obtained water penetration is preferable, intensity is higher, and the preferably permeable mixed mud of workability.
Maleopimaric anhydride is added in concrete, increases the dispersibility of water-reducing agent, while being introduced in pervious concrete
More fine and close bubble, increases the water permeability of pervious concrete.
Further, maleic anhydride type carboxylic acid water reducer is prepared by following methods:
S1, mass ratio 1.5:1 maleic anhydride and polyethylene glycol is esterified under conditions of pH=7-8 and obtains maleic anhydride ester
Compound, for p-methyl benzenesulfonic acid as catalyst, catalyst amount is the 3.5% of maleic anhydride quality;
S2, mass ratio 1:3:1 esterified object of maleic anhydride, acrylic acid and methylpropene sodium sulfonate causes in ammonium persulfate and makees
It polymerize 5h under, at 85 DEG C and maleic anhydride type carboxylic acid water reducer is made;The dosage of ammonium persulfate is esterified object of maleic anhydride, propylene
The 4% of acid and methylpropene sodium sulfonate total amount.
In addition, when preparing maleic anhydride type carboxylic acid water reducer, maleic anhydride is esterified to obtain maleic anhydride first
Carboxylate increases the asymmetry of maleic anhydride, convenient for polymerizeing with acrylic acid and methylpropene sodium sulfonate, and introduces more
Anionic functional group is conducive to the dispersion of cement granules.
In conclusion the invention has the advantages that:
1, it using the rubble of 5-25mm continuous gradings and sand as basic overlap joint aggregate, conveniently plugs the gap, constructs to be formed
Good water permeability and the overlap joint skeleton with some strength.
2, the water-cement ratio of concrete is adjusted 0.27 or so, reduces the dosage of water, increases slurry viscosity, improves concrete
Intensity.The outside for being wrapped in sand and stone of slurry more consolidation, overlap aggregate between form certain air-and water-permeable hole
Gap increases water penetration.
3, additive uses binder and water-reducing agent, and binder and water-reducing agent are soluble in water and be wrapped in the outside of aggregate,
The package degree of packing of slurry and sand and stone is further increased, frame strength is improved.
4. water-reducing agent introduces rosin during preparation, rosin introduces the bubble of even compact in concrete, increases
The water permeability of concrete.
5. introducing maleic anhydride type carboxylic acid water reducer in pervious concrete, water-reducing agent introduces stable gas in concrete
Bubble, the film thickness of bubble is relatively stable, has good adaptability for water phase transformation caused by temperature, can effectively reduce coagulation
The internal fissure that soil is generated due to ambient temperature variation, increases the anti-freezing property of pervious concrete.
Description of the drawings
Fig. 1 is the preparation technology flow chart of permeable concrete.
Specific implementation mode
Below in conjunction with Fig. 1, invention is further described in detail.
The present invention prepares the raw material used in permeable concrete and removes maleopimaric anhydride and maleic anhydride type carboxylic acid water reducer
Except be commercially available, The concrete specification and manufacturer are as shown in table 1.
The specification of 1 raw material of table and manufacturer
Embodiment one:A kind of method preparing pervious concrete is as follows:
Step 1:56kg miberal powders, 50kg sands and 1067kg stones are homogenized in advance in respective former material feed bin;
Step 2:108kg water is heated to 35 DEG C, and addition 1kg gelatin and obtained first gel of 1kg guar gums are molten in water
Liquid;It waits for that the first gel solution is cooled to room temperature and then is added 4.5kg maleic anhydride type carboxylic acid water reducers and is uniformly mixed and is made the
Two gel solutions;
Step 3:344kg cement, 56kg miberal powders, 50kg sands and 1067kg stones are poured into forced mixer and mixed
2min is poured into the second gel solution in step 2 and is stirred the obtained permeable concretes of 6min later.
Wherein, the preparation method of maleopimaric anhydride is as follows:
P1, it takes 30kg rosin acids to be added in flask, is heated to 180 DEG C of processing 2h;Temperature is down to after 120 DEG C, in flask
100mL glacial acetic acid, 10g maleic anhydrides and 2g p-methyl benzenesulfonic acid is added, and maleopimaric anhydride coarse-grain is made in the 6h that flows back;
Maleopimaric anhydride crystal is made by glacial acetic acid recrystallization purification in maleopimaric anhydride coarse-grain in P2, P1.
Maleic anhydride type carboxylic acid water reducer is prepared by following methods:
S1, mass ratio is taken to be 1.5:1 maleic anhydride and polyethylene glycol is esterified under conditions of pH=7-8 and obtains maleic anhydride
Carboxylate;Wherein use p-methyl benzenesulfonic acid as catalyst, catalyst amount is the 3.5% of maleic anhydride, reaction temperature 85
DEG C, reaction time 4h;
S2, mass ratio 1:3:1 esterified object of maleic anhydride, acrylic acid and methylpropene sodium sulfonate causes in ammonium persulfate and makees
It polymerize 5h under, at 85 DEG C and maleic anhydride type carboxylic acid water reducer is made;The dosage of ammonium persulfate is esterified object of maleic anhydride, propylene
The 4% of acid and methylpropene sodium sulfonate total amount.
Remaining embodiment is identical as the preparation method of embodiment one, and difference lies in component proportion differences, specifically such as 2 institute of table
Show.
The component proportion of 2 each embodiment of table
Component (kg) | Embodiment one | Embodiment two | Embodiment three | Example IV | Embodiment five | Embodiment six |
Cement | 344 | 340 | 350 | 345 | 347 | 342 |
Miberal powder | 56 | 50 | 60 | 57 | 55 | 58 |
Sand | 50 | 45 | 55 | 43 | 46 | 53 |
Stone | 1067 | 1000 | 1100 | 1050 | 1055 | 1086 |
Additive | 6.5 | 6 | 7 | 6.2 | 6.7 | 6.5 |
Water | 108 | 100 | 110 | 105 | 107 | 109 |
It is 2 that wherein additive, which includes weight ratio,:1 water-reducing agent and binder;Water-reducing agent includes that weight ratio is 1:1 Malaysia Korean pine
Acid anhydrides and maleic anhydride type carboxylic acid water reducer;Binder includes that weight ratio is 1:1 gelatin and guar gum.
The pervious concrete being prepared by the above various embodiments is according to GB/T50081-2002《Normal concrete mechanical property
It can test method standard》Test compression strength and bend resistance intensity.
The porosity of pervious concrete is tested in accordance with the following methods:By permeable concrete be prepared into 150mm × 150mm ×
The test cube of 150mm impregnates test block for 24 hours in water, then the quality m1 after test test block immersion air-dries test block
For 24 hours, its quality m2 is tested, the porosity P of pervious concrete test block is calculated according to following formula.
Wherein V is test block volume, and ρ is the density of water.
The coefficient of permeability test of pervious concrete is according to " fixed height of water level method " test.
The anti-freezing property of pervious concrete is tested:For 24 hours by the mixed mud test block immersion of standard curing 28d, it wipes to saturation
It is packed into rubber drum after face is dry, is placed in quick refrigerator and carries out freezing and thawing test, after 25 cycles, carries out compression strength survey
Examination.The ratio of compression strength is the coefficient of resistance to jelly before and after test block freeze thawing.
The compression strength, bending strength of pervious concrete made from each embodiment, coefficient of permeability, porosity and anti-freezing property
Test result it is as shown in table 3.
Pervious concrete makes the test result after test block made from 3 each embodiment of table
From the above data, by matching permeable concrete obtained above, compression strength is in 31.9-34.5MPa within 28 days
Between, flexural strength is between 3.2-3.4MPa, higher than the intensity that general pervious concrete can carry, can be used for making empty
Heart brick.Between its porosity can also reach 18.4-20.1%, coefficient of permeability has ventilative saturating well in 3.2-3.8mm/s
Aqueous energy.After 25 Frozen-thawed cycleds, permeable concrete makes the coefficient of resistance to jelly of test block between 76%-80%,
It crosses in freezing journey, crack is seldom generated in concrete test block, and intensity decline is smaller, there is preferable anti-freezing property.
Comparative example:Compared with embodiment one, pervious concrete uses commercially available carboxylic acid type water reducing agent in comparative example one;Comparative example
Two use the rubble of 10-20mm continuous gradings;The water-cement ratio of pervious concrete is 0.4 in comparative example three;It is permeable in comparative example four
Maleic anhydride type carboxylic acid water reducer is used only in the additive of concrete.The concrete component and proportioning of each comparative example are as shown in table 4.
4 each comparative example of table prepares the component and proportioning of concrete
By matching the compression strength of pervious concrete obtained, bending strength, coefficient of permeability, porosity and anti-freezing property above
Test result is as shown in table 5.
The test result of permeable mixed mud made from 5 or more each comparative example of table
Test event | Comparative example one | Comparative example two | Comparative example three | Comparative example four |
28 days compression strength (MPa) | 20 | 26 | 28 | 23 |
Flexural strength (MPa) | 1.9 | 2.2 | 2.7 | 2 |
Porosity (%) | 22.4 | 16 | 18 | 24 |
Coefficient of permeability (mm/s) | 4.1 | 2.7 | 2.7 | 3.5 |
Resistance to jelly coefficient (%) | 111 | 105 | 95 | 93 |
From the above data, if additive is only applicable in commercially available water-reducing agent, although its porosity can reach 20%,
Since there are larger gap, the bond strength between aggregate is poor, its resistance to compression and flexural strength is caused to have between aggregate
Declined.During resistance to jelly is tested, large ice crystals are full of in inner space, expansion is very fast, is easy bone in refrigerating process
Continue to support big formation fine cracks in gap between material.After multigelation, the crack in pervious concrete test block is gradual
Increase, influences the intensity of entire concrete test block.
If using the rubble of 10-20mm continuous gradings as basic overlap joint skeleton, the overlap joint gap between skeleton is reduced, institute
The concrete skeleton intensity of composition is higher, but the decline of the water permeability of concrete is larger.
The water-cement ratio of pervious concrete is improved, the slurry fluidity that cement, miberal powder and additive are formed is preferable, is full of aggregate
Between gap.Although the intensity of pervious concrete increases, its water permeability is poor.
If maleic anhydride type carboxylic acid water reducer is used only in the additive in pervious concrete, water-reducing agent increases the dispersion of cement
Property, and rosin is introduced, the porosity of permeable mixed mud is improved, its water permeability is increased.But cement, miberal powder and maleic acid
The slurry that acid anhydride type carboxylic acid water reducer is formed cannot more consolidation be wrapped in outside aggregate, cause the resistance to compression of permeable mixed mud and anti-
Folding intensity decreases.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (9)
1. a kind of permeable concrete, which is characterized in that including following components indicated with parts by weight:340-350 parts of cement;
50-60 parts of miberal powder;45-55 parts of sand;1000-1100 parts of stone;6-7 parts of additive;100-110 parts of water;Additive includes
Water-reducing agent, wherein water-reducing agent include that parts by weight are 1:1 maleopimaric anhydride and maleic anhydride type carboxylic acid water reducer.
2. permeable concrete according to claim 1, it is characterised in that:Additive further includes binder, carboxylic acid diminishing
The weight ratio of agent and binder is 2:1;Binder includes that weight ratio is 1:1 gelatin and guar gum.
3. permeable concrete according to claim 2, it is characterised in that:Stone is 5-25mm continuous gradings using grain size
Rubble.
4. permeable concrete according to claim 3, it is characterised in that:Sand is the areas II nature medium sand.
5. permeable concrete according to claim 4, it is characterised in that:Cement uses 42.5 grades of portland cements.
6. permeable concrete according to claim 5, it is characterised in that:Miberal powder is S95 grades of ground granulated blast furnace slags.
7. permeable concrete according to claim 6, which is characterized in that including following components indicated with parts by weight:
344 parts of cement;56 parts of miberal powder;50 parts of sand;1067 parts of stone;6.5 parts of additive;108 parts of water.
8. a kind of preparation method of the permeable concrete as described in claim any one of 2-7, which is characterized in that including following step
Suddenly:
Step 1:Miberal powder, sand and stone are homogenized in advance in respective former material feed bin;
Step 2:35 DEG C are heated water to, and gelatin and obtained first gel solution of guar gum are added in water;Wait for that first is solidifying
Sol solution is cooled to room temperature and then is added maleopimaric anhydride and maleic anhydride type carboxylic acid water reducer is uniformly mixed and is made second
Gel solution;
Step 3:Cement, miberal powder, sand and stone are poured into and mix 2min in forced mixer, is poured into step 2 later
The second gel solution in stirring 6min be made permeable concrete.
9. the preparation method of permeable concrete according to claim 8, which is characterized in that maleic anhydride type carboxylic acid subtracts
Aqua is prepared by following methods:
S1, mass ratio 1.5:1 maleic anhydride and polyethylene glycol is esterified under conditions of pH=7-8 and obtains maleic anhydride esterification
Object, for p-methyl benzenesulfonic acid as catalyst, catalyst amount is the 3.5% of maleic anhydride quality;
S2, mass ratio 1:3:1 esterified object of maleic anhydride, acrylic acid and methylpropene sodium sulfonate causes in ammonium persulfate and makees
It polymerize 5h under, at 85 DEG C and maleic anhydride type carboxylic acid water reducer is made;The dosage of ammonium persulfate is esterified object of maleic anhydride, propylene
The 4% of acid and methylpropene sodium sulfonate total amount.
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CN111393101A (en) * | 2020-03-21 | 2020-07-10 | 上海石化安东混凝土有限公司 | Pervious concrete and preparation method thereof |
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CN111484293A (en) * | 2020-04-26 | 2020-08-04 | 上海兆捷实业发展有限公司 | Anti-freezing high-performance concrete and preparation method thereof |
CN116063029A (en) * | 2022-11-18 | 2023-05-05 | 江苏控华建工有限公司 | Novel permeable concrete manufacturing method |
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CN109665765A (en) * | 2018-10-16 | 2019-04-23 | 上海天行新型材料有限公司 | Pervious concrete |
CN109665765B (en) * | 2018-10-16 | 2021-10-19 | 上海天行新型材料有限公司 | Pervious concrete |
CN111320437A (en) * | 2020-03-21 | 2020-06-23 | 上海石化安东混凝土有限公司 | Anti-crack concrete and preparation method thereof |
CN111393101A (en) * | 2020-03-21 | 2020-07-10 | 上海石化安东混凝土有限公司 | Pervious concrete and preparation method thereof |
CN111470821A (en) * | 2020-04-26 | 2020-07-31 | 上海兆捷实业发展有限公司 | High-performance fiber concrete and preparation method thereof |
CN111484293A (en) * | 2020-04-26 | 2020-08-04 | 上海兆捷实业发展有限公司 | Anti-freezing high-performance concrete and preparation method thereof |
CN116063029A (en) * | 2022-11-18 | 2023-05-05 | 江苏控华建工有限公司 | Novel permeable concrete manufacturing method |
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