CN106431063B - A kind of rush for metro shield section of jurisdiction coagulates Early-strength polycarboxylate superplasticizer - Google Patents
A kind of rush for metro shield section of jurisdiction coagulates Early-strength polycarboxylate superplasticizer Download PDFInfo
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- CN106431063B CN106431063B CN201610820468.4A CN201610820468A CN106431063B CN 106431063 B CN106431063 B CN 106431063B CN 201610820468 A CN201610820468 A CN 201610820468A CN 106431063 B CN106431063 B CN 106431063B
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
- C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
- C08F299/022—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polycondensates with side or terminal unsaturations
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/40—Redox systems
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
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Abstract
The invention discloses a kind of rush for metro shield section of jurisdiction to coagulate Early-strength polycarboxylate superplasticizer, is grouped as by the group of following parts by weight by raw material：5~30 parts by weight of water reducing type PCE mother liquors promote to coagulate 10~40 parts by weight of early-strength PCE mother liquors, 0.02~0.05 parts by weight of air entraining agent, 0.02~0.05 parts by weight of antifoaming agent, 0.5~5.0 parts by weight of coagulant, 0.01~0.02 parts by weight of corrosion inhibitor, 0.01~0.02 parts by weight of preservative and suitable quantity of water.Compounding mechanism of the present invention according to concrete admixture, it proposes based on water reducing type, the solidifying early-strength polycarboxylic acids mother liquor of rush, it is aided with the components such as air entraining agent, antifoaming agent, coagulant, corrosion inhibitor, the preservative with excellent compatibility, uniform solution is formed through mixing, stirring, suitable setting time and early strength are can be obtained, to obtain a kind of high-efficiency water-reducing agent of poly-carboxylic acid for metro shield section of jurisdiction.
Description
Technical field
The invention belongs to build additive technical field, and in particular to a kind of rush for metro shield section of jurisdiction coagulates early-strength
Polycarboxylate water-reducer.
Background technology
It is various industry with civil buildings, road and rail bridge, airfield runway, mine construction, hydro-structure, ocean development,
The construction of many engineerings such as geothermal engineering and military affairs all be unable to do without concrete, and compared with other construction materials, concrete has
The features such as raw material are easy to get, are applied widely, energy loss is low, service life is long.With adding for concrete works project construction
Soon, ever-increasing trend is also presented in the dosage of precast concrete product.Compared to normal concrete, precast concrete requires mixed
There is solidifying soil preferable early strength to develop rate, to improve form cycling rate, or meet the strength development under cryogenic conditions, will
The production period of precast concrete extends to even winter in late autumn, and also has higher requirement to concrete durability.
Subway engineering mainly uses shield construction, and wherein shield duct piece is the main mounting structure of shield-tunneling construction, is tunnel
The outermost layer barrier in road carries the effect for resisting earth pressure, groundwater pressure and some special loads.Shield duct piece matter
Amount is directly related to the total quality and safety in tunnel, influences the water resistance and endurance quality in tunnel.Shield duct piece is per ring by 3
Block calibrated bolck, 2 pieces of adjacent blocks and 1 piece bind block composition, are connected by screw bolts between circumferential section of jurisdiction.Section of jurisdiction concrete requires
C50P10, design service life are generally 100 years.
Metro shield section of jurisdiction concrete is a kind of special precast concrete, its main feature is that high cementitious material, low water binder ratio,
Low slump, it is desirable that be not easy to lose, be easy to pour and vibrate.Metro shield section of jurisdiction concrete feature is high cementitious material, low water
Glue ratio, low slump, it is desirable that be not easy to lose, to there is good thixotropy, be easy to pour and vibrate.Secondly, shield duct piece coagulation
Soil needs to carry out imparting a smooth finish to section of jurisdiction after pouring 5~8min of completion, and this requires concrete to have early epistasis.But it constructs in winter
When, since temperature is low, concrete coagulating time is caused to extend, concrete can not be rapid curing after pouring, considerably increase through
Between stopping time, can not quicker de-mold, if early strength of concrete is inadequate, after uncovering pressing plate, concrete can be along radian mould
Have past both ends flowing, causes both mold ends concrete to increase, intermediate concrete is reduced.Generally terminate in casting and compacting of concrete laggard
Row steam curing, concrete strength are hung out after reaching 20MPa from mold, and pond leaching is hung in after being placed on workshop cooling 1h
Bubble maintenance.
It is realized by using concrete admixture there are two types of early strong technological approaches：One is synthesizing mean, another kind is
Compounding means.1, synthesizing mean, that is, itself contains Zao Qiang functional groups in the additive molecular structure used, can acceleration of hydration into
Journey, early strong effect is notable, and desired function can be fundamentally reached on Molecular Design, is that ideal technology solves
Approach.CN101357834B discloses a kind of early-strength polycarboxylic acids plasticiser, using the methoxy poly (ethylene glycol) of different molecular weight
Carboxylic acid esters polymeric monomer, (methyl) acrylic acid, 2~acrylamide-2-methyl propane sulfonic and random/block ether are at 60 DEG C~90 DEG C
Aqueous solution in be copolymerized prepare.CN101376576B discloses a kind of early strength type polycarboxylic acid series high-performance dehydragent and its prepares work
Skill, the technical solution use polyethylene glycol monoether esters of acrylic acid polymeric monomer, (methyl) acrylic acid, the alkene of two kinds of different chain numbers
Propyl sulfonic acid sodium or methylpropene sodium sulfonate, the polyoxyalkylene acrylate esters monomer with defoaming function under the conditions of nitrogen protection,
The mode once to feed intake is taken to carry out copolyreaction.2, compounding means have early powerful inorganic matter, organic by compounding
Object etc. makes concrete reach early strong effect, but early strong effect is generally relatively limited.CN101024565A discloses a kind of by multiple
With the morning strong composite water-reducing agent that the accelerating components such as anhydrous calcium chloride, triethanolamine, sodium benzoate obtain, can carry to a certain extent
High compressive strength, but contain villaumite, there is corrosion to armored concrete.
In optimization subway shield duct piece production technology, the vital task that section of jurisdiction production efficiency is existing shield duct piece factory is improved.
To improve production efficiency, concrete component short time interior energy is needed to be demoulded from mold, this requires concrete with higher
Early strength and shorter setting time.It has not yet to see and early strength and shortening is improved using synthesis and compounded technology means
The technical solution of setting time obtain preferable application effect to adapt to the variation of different materials.
Invention content
The purpose of the present invention is to provide a kind of rush for metro shield section of jurisdiction to coagulate Early-strength polycarboxylate superplasticizer.
Technical scheme is as follows：
A kind of rush for metro shield section of jurisdiction coagulates Early-strength polycarboxylate superplasticizer, by raw material by the component of following parts by weight
Composition：5~30 parts by weight of water reducing type PCE mother liquors promote to coagulate 10~40 parts by weight of early-strength PCE mother liquors, air entraining agent 0.02~0.05
Parts by weight, 0.5~5.0 parts by weight of coagulant, 0.01~0.02 parts by weight of corrosion inhibitor, are prevented at 0.02~0.05 parts by weight of antifoaming agent
0.01~0.02 parts by weight of rotten agent and suitable quantity of water；
The mass concentration of water reducing type PCE mother liquors is 45~55%, not by 2- methacrylics polyoxyethylene ether and first
It is saturated monomer and uses redox initiation system, obtained by free radical solution polymerization；The number-average molecular weight of its active ingredient is
30000~50000, structural formula isWherein, R1For-H or-
CH3, R2For-CH3Or-CH2CH3, R3For-H or-CH3, M is hydrogen atom, sodium atom, potassium atom or ammonium ion, m1=15~30,
m2=15~30, m3=5~20, p1=50~55；
The mass concentration for promoting to coagulate early-strength PCE mother liquors is 45~55%, by cumenyl polyoxyethylene ether, 2- methallyls
Base polyoxyethylene ether and the second unsaturated monomer use redox initiation system, are obtained by free radical solution polymerization；Its
The number-average molecular weight of active ingredient is 30000~100000, and structural formula is
Wherein R4For-H or-CH3, M
To be expressed as hydrogen atom, sodium atom, potassium atom or ammonium ion, n1=2~8, n2=5~15, n3=10~20, n4=1~5, p2
=85~95, p3=50~55.
In a preferred embodiment of the invention, by raw material by forming following weight percentage components：Water reducing type
The solidifying early-strength PCE mother liquors 10~40% of PCE mother liquors 5~30%, rush, air entraining agent 0.02%~0.05%, antifoaming agent 0.02%~
0.05%, coagulant 0.5%~5.0%, corrosion inhibitor 0.01~0.02% and preservative 0.01~0.02%, surplus are water.
It is further preferred that first unsaturated monomer is acrylic acid, methyl acrylate, ethyl acrylate, methyl-prop
E pioic acid methyl ester or ethyl methacrylate.
It is further preferred that second unsaturated monomer is acrylic acid, acrylyl oxy-ethyl-trimethyl salmiac or first
Base acrylyl oxy-ethyl-trimethyl salmiac.
In a preferred embodiment of the invention, the air entraining agent be EVONIK Sitren AirVoid 601,
One or both of BASF MasterAir 303A and SANNOPCO AE-151.
In a preferred embodiment of the invention, the antifoaming agent is TAKEMOTO Chupol AFK-2, BASF
One or both of RHEOPLUS 421 and SANNOPCO HS-DEFOAMER 567.
In a preferred embodiment of the invention, the coagulant is sodium sulfocyanate and/or potassium rhodanide.
In a preferred embodiment of the invention, the corrosion inhibitor is benzotriazole, carboxyl benzotriazole and thiocarbamide
One or both of.
In a preferred embodiment of the invention, the preservative is in paraben esters, Kathon CG and isothiazolinone
One or two.
Beneficial effects of the present invention：Compounding mechanism of the present invention according to concrete admixture proposes with water reducing type, promotees to coagulate early
Based on strong type polycarboxylic acids mother liquor, it is aided with air entraining agent, antifoaming agent, coagulant, corrosion inhibitor, preservative etc. with excellent compatibility
Component to form uniform solution through mixing, stirring, you can suitable setting time and early strength is obtained, to obtain one kind
For the high-efficiency water-reducing agent of poly-carboxylic acid for metro shield section of jurisdiction.
Specific implementation mode
Technical scheme of the present invention is further detailed and is described below by way of specific implementation mode.
In following each embodiments,
The mass concentration of water reducing type PCE mother liquors is 45~55%, not by 2- methacrylics polyoxyethylene ether and first
It is saturated monomer and uses redox initiation system, obtained by free radical solution polymerization；The number-average molecular weight of its active ingredient is
30000~50000, structural formula isWherein, R1For-H or-
CH3, R2For-CH3Or-CH2CH3, R3For-H or-CH3, M is hydrogen atom, sodium atom, potassium atom or ammonium ion, m1=15~30,
m2=15~30, m3=5~20, p1=50~55；
Specific preparation method includes as follows：
(1) each raw material component is weighed in proportion.
(2) the first unsaturated monomer is dissolved in deionized water and is configured to solution A, ascorbic acid is dissolved in deionized water
It is configured to solution B.
(3) 2- methacrylics polyoxyethylene ether and hydrogen peroxide are dissolved in deionized water, adjust reaction temperature, presses
Solution A and solution B is added dropwise according to certain rate of addition, sodium hydroxide adjusting pH value is added after reaction and subtracts to neutrality
Water type PCE mother liquors.
The mass concentration for promoting to coagulate early-strength PCE mother liquors is 45~55%, by cumenyl polyoxyethylene ether, 2- methallyls
Base polyoxyethylene ether and the second unsaturated monomer use redox initiation system, are obtained by free radical solution polymerization；Its
The number-average molecular weight of active ingredient is 30000~100000, and structural formula is
Wherein R4For-H or-CH3, M
To be expressed as hydrogen atom, sodium atom, potassium atom or ammonium ion, n1=2~8, n2=5~15, n3=10~20, n4=1~5, p2
=85~95, p3=50~55；
Specific preparation method includes as follows：
(1) each raw material component is weighed in proportion.
(2) the second unsaturated monomer is dissolved in deionized water and is configured to solution A, ascorbic acid is dissolved in deionized water
It is configured to solution B.
(3) cumenyl polyoxyethylene ether, 2- methacrylics polyoxyethylene ether and hydrogen peroxide are dissolved in deionization
In water, reaction temperature is adjusted, solution A and solution B is added dropwise according to certain rate of addition, sodium hydroxide tune is added after reaction
PH value is saved to neutrality to get water reducing type PCE mother liquors.
Embodiment 1
Water 887.09kg is first added in 1000L reaction kettles, after feed intake be added BASF MasterAir 303A 0.15kg,
TAKEMOTO Chupol AFK-2 0.20kg, sodium sulfocyanate 2.46kg, thiocarbamide 0.05kg, Kathon CG 0.10kg stir 30min
Afterwards, then feed intake addition water reducing type PCE mother liquor PCE-1 24.64kg and rush coagulate early-strength PCE mother liquor PCE-5 197.13kg, continue
Stirring is dissolved into uniform solution to it, and it is poly- that mass concentration 10%, the i.e. rush for metro shield section of jurisdiction coagulate early-strength
Carboxylic acid water reducer.
Embodiment 2
Water 897.48kg is first added in 1000L reaction kettles, after feed intake EVONIK Sitren AirVoid 601 be added
0.10kg, BASF RHEOPLUS 421 0.2kg, sodium sulfocyanate 4.93kg, carboxyl benzotriazole 0.10kg, Kathon CG 0.05kg,
After stirring 30min, then feeds intake and water reducing type PCE mother liquor PCE-2 73.97kg are added and promote to coagulate early-strength PCE mother liquors PCE-6
147.94kg continues stirring to it and is dissolved into uniform solution, mass concentration 10%, i.e., described for metro shield section of jurisdiction
Promote to coagulate Early-strength polycarboxylate superplasticizer.
Embodiment 3
Water 869.03kg is first added in 1000L reaction kettles, after feed intake be added SANNOPCO AE~1510.10kg,
BASF RHEOPLUS 421 0.25kg, sodium sulfocyanate 15.34kg, thiocarbamide 0.10kg, paraben esters 0.10kg stir 30min
Afterwards, then feed intake addition water reducing type PCE mother liquor PCE-3 102.24kg and rush coagulate early-strength PCE mother liquor PCE-7 102.24kg, after
Continuous stirring is dissolved into uniform solution to it, and mass concentration 10%, the i.e. rush for metro shield section of jurisdiction coagulate early-strength
Polycarboxylate water-reducer.
Embodiment 4
Water 788.73kg is first added in 1000L reaction kettles, after feed intake EVONIK SitrenAirVoid be added
6010.22kg, SANNOPCO HS-DEFOAMER 567 0.09kg, potassium rhodanide 22.16kg, benzotriazole 0.09kg are different
Thiazolinone 0.04kg after stirring 30min, then feeds intake and water reducing type PCE mother liquor PCE-4 132.93kg is added and promote to coagulate early-strength
PCE mother liquor PCE-8 44.31kg continue stirring and are dissolved into uniform solution to it, and mass concentration 10% is that is, described for ground
The rush of iron shield duct piece coagulates Early-strength polycarboxylate superplasticizer.
The mass concentration of above-mentioned water reducing type PCE mother liquors is 50%, not by 2- methacrylics polyoxyethylene ether and first
It is saturated monomer and uses redox initiation system, obtained by free radical solution polymerization, the first unsaturated monomer is acrylic acid, third
E pioic acid methyl ester, ethyl acrylate, methyl methacrylate or ethyl methacrylate；The number-average molecular weight of its active ingredient is
30000~50000, structural formula isWherein, R1For-H or-
CH3, R2For-CH3Or-CH2CH3, R3For-H or-CH3, M is hydrogen atom, sodium atom, potassium atom or ammonium ion, m1=15~30,
m2=15~30, m3=5~20, p1=50~55；Corresponding the various embodiments described above, used water reducing type PCE mother liquors are specifically tied
Structure information is as follows：
| Water reducing type PCE | R1 | R2 | R3 | M | m1 | m2 | m3 | p1 |
| PCE-1 | -CH3 | -CH3 | -H | -Na | 25 | 25 | 5 | 50 |
| PCE-2 | -H | -CH2CH3 | -CH3 | -NH4 | 30 | 20 | 15 | 55 |
| PCE-3 | -H | -CH3 | -H | -H | 15 | 30 | 10 | 51 |
| PCE-4 | -CH3 | -CH2CH3 | -CH3 | -K | 20 | 15 | 20 | 54 |
The mass concentration that above-mentioned rush coagulates early-strength PCE mother liquors is 50%, by cumenyl polyoxyethylene ether, 2- methallyls
Base polyoxyethylene ether and the second unsaturated monomer use redox initiation system, are obtained by free radical solution polymerization, the
Two unsaturated monomers are acrylic acid, acrylyl oxy-ethyl-trimethyl salmiac or MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride；
The number-average molecular weight of its active ingredient is 30000~100000, and structural formula isWherein R4For-H or-CH3, M is to be expressed as
Hydrogen atom, sodium atom, potassium atom or ammonium ion, n1=2~8, n2=5~15, n3=10~20, n4=1~5, p2=85~95,
p3=50~55；Corresponding the various embodiments described above, used viscosity reduction type PCE mother liquor concrete structure information are as follows：
| Promote to coagulate early-strength PCE mother liquors | R4 | M | n1 | n2 | n3 | n4 | p2 | p3 |
| PCE-5 | -H | -K | 8 | 5 | 20 | 1 | 85 | 50 |
| PCE-6 | -H | -H | 2 | 10 | 20 | 4 | 90 | 55 |
| PCE-7 | -CH3 | -NH4 | 5 | 15 | 10 | 5 | 95 | 51 |
| PCE-8 | -CH3 | -Na | 6 | 10 | 15 | 2 | 95 | 54 |
The rush for metro shield section of jurisdiction that Examples 1 to 4 is synthesized coagulates Early-strength polycarboxylate superplasticizer and uses Fujian
Good fortune cement P.O 52.5, flyash are I grades of ashes of high energy, and miberal powder is S95 grades of three steel, and sand (S) is the river of fineness modulus 2.6~2.8
Sand, handstone are grain size 5~10mm impact crushing stones, and big stone is grain size 10~20mm impact crushing stones.Concrete mix
For：Cement 330kg/m3；Flyash 70kg/m3；Miberal powder 40kg/m3；Sand 698kg/m3；Handstone 225kg/m3；Big stone
901kg/m3；Water 145kg/m3, according to GB 8076-2008《Concrete admixture》, survey its slump and concrete demoulding intensity.
In 60 ± 10mm, admixture dosage is 0.18% or so (being converted into solid part) of glue material quality, environment temperature for initial slump control
10 ± 2 DEG C of degree.Acquired results are as shown in table 1：
The foregoing is only a preferred embodiment of the present invention, therefore cannot limit the scope of implementation of the present invention according to this, i.e.,
According to equivalent changes and modifications made by the scope of the claims of the present invention and description, all should still belong in the range of the present invention covers.
Claims (7)
1. a kind of rush for metro shield section of jurisdiction coagulates Early-strength polycarboxylate superplasticizer, it is characterised in that：By raw material by weighing as follows
The group of amount part is grouped as：5~30 parts by weight of water reducing type PCE mother liquors promote to coagulate 10~40 parts by weight of early-strength PCE mother liquors, air entraining agent
0.02~0.05 parts by weight, 0.02~0.05 parts by weight of antifoaming agent, 0.5~5.0 parts by weight of coagulant, corrosion inhibitor 0.01~0.02
Parts by weight, 0.01~0.02 parts by weight of preservative and suitable quantity of water；
The mass concentration of water reducing type PCE mother liquors is 45~55%, unsaturated by 2- methacrylics polyoxyethylene ether and first
Monomer uses redox initiation system, is obtained by free radical solution polymerization；The number-average molecular weight of its active ingredient is 30000
~50000, structural formula isWherein, R1For-H or-CH3, R2For-
CH3Or-CH2CH3, R3For-H or-CH3, M is hydrogen atom, sodium atom, potassium atom or ammonium ion, m1=15~30, m2=15~
30, m3=5~20, p1=50~55；First unsaturated monomer is acrylic acid, methyl acrylate, ethyl acrylate, methyl-prop
E pioic acid methyl ester or ethyl methacrylate；
The mass concentration for promoting to coagulate early-strength PCE mother liquors is 45~55%, is gathered by cumenyl polyoxyethylene ether, 2- methacrylics
Oxyethylene group ether and the second unsaturated monomer use redox initiation system, are obtained by free radical solution polymerization；It is effectively
The number-average molecular weight of ingredient is 30000~100000, and structural formula is
Wherein R4For-H or-CH3, M is table
It is shown as hydrogen atom, sodium atom, potassium atom or ammonium ion, n1=2~8, n2=5~15, n3=10~20, n4=1~5, p2=85
~95, p3=50~55；Second unsaturated monomer is acrylic acid, acrylyl oxy-ethyl-trimethyl salmiac or methyl-prop
Alkene acyloxyethyl trimethyl ammonium chloride.
2. a kind of rush for metro shield section of jurisdiction as described in claim 1 coagulates Early-strength polycarboxylate superplasticizer, feature exists
In：By raw material by forming following weight percentage components：Water reducing type PCE mother liquors 5~30% promote to coagulate early-strength PCE mother liquors 10
~40%, air entraining agent 0.02%~0.05%, antifoaming agent 0.02%~0.05%, coagulant 0.5%~5.0%, corrosion inhibitor
0.01~0.02% and preservative 0.01~0.02%, surplus be water.
3. a kind of rush for metro shield section of jurisdiction as described in claim 1 coagulates Early-strength polycarboxylate superplasticizer, feature exists
In：The air entraining agent is EVONIK Siren AirVoid 601, BASF MasterAir 303A and SANNOPCO AE-151
One or both of.
4. a kind of rush for metro shield section of jurisdiction as described in claim 1 coagulates Early-strength polycarboxylate superplasticizer, feature exists
In：The antifoaming agent is TAKEMOTO Chupol AFK-2, BASF RHEOPLUS 421 and SANNOPCO HS-DEFOAMER
One or both of 567.
5. a kind of rush for metro shield section of jurisdiction as described in claim 1 coagulates Early-strength polycarboxylate superplasticizer, feature exists
In：The coagulant is sodium sulfocyanate and/or potassium rhodanide.
6. a kind of rush for metro shield section of jurisdiction as described in claim 1 coagulates Early-strength polycarboxylate superplasticizer, feature exists
In：The corrosion inhibitor is one or both of benzotriazole, carboxyl benzotriazole and thiocarbamide.
7. a kind of rush for metro shield section of jurisdiction as described in claim 1 coagulates Early-strength polycarboxylate superplasticizer, feature exists
In：The preservative is one or both of paraben esters, Kathon CG and isothiazolinone.
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| CN108147698A (en) * | 2017-12-14 | 2018-06-12 | 湖南中岩建材科技有限公司 | A kind of shield duct piece additive and preparation method |
| CN113307531A (en) * | 2021-06-02 | 2021-08-27 | 江苏金木土新材料有限公司 | Remedial preservative for deteriorated polycarboxylate superplasticizer |
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|---|---|---|---|---|
| CN103373832B (en) * | 2012-04-17 | 2015-05-13 | 苏琳 | High-performance anti-cracking anticorrosive water reducing agent composition and preparation method thereof |
| CN105347726B (en) * | 2015-10-16 | 2018-06-26 | 同济大学 | A kind of anti-corrosion high-thin arch dam polycarboxylate composite water reducing agent and preparation method and application |
| CN105565720B (en) * | 2015-12-16 | 2017-11-28 | 广东红墙新材料股份有限公司 | A kind of application of ultra high early strength poly-carboxylic water reducer in section of jurisdiction |
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Address after: 361000 Fujian province Xiamen torch hi tech Zone (Xiangan) Industrial Zone neian Road No. 169 Co-patentee after: Kezhijie New Material Group Fujian Co., Ltd Patentee after: KZJ NEW MATERIALS GROUP Co.,Ltd. Address before: 361000 Fujian province Xiamen torch hi tech Zone (Xiangan) Industrial Zone neian Road No. 169 Co-patentee before: FUJIAN KEZHIJIE NEW MATERIALS Co.,Ltd. Patentee before: KZJ NEW MATERIALS GROUP Co.,Ltd. |