CN107651876A - A kind of concrete heat maintenance synergist and its preparation method and application - Google Patents
A kind of concrete heat maintenance synergist and its preparation method and application Download PDFInfo
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- CN107651876A CN107651876A CN201710977433.6A CN201710977433A CN107651876A CN 107651876 A CN107651876 A CN 107651876A CN 201710977433 A CN201710977433 A CN 201710977433A CN 107651876 A CN107651876 A CN 107651876A
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- concrete
- synergist
- thermal curing
- acrylic acid
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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
-
- 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
- C04B40/0042—Powdery mixtures
Abstract
The invention provides a kind of concrete heat maintenance synergist and its preparation method and application, the raw material of the synergist includes maleic acid triethanolamine ester, acrylic acid alkylene alkenyl APEO hydroxyethylacrylate copolymer, cellulose ether and water.Its preparation method is made after mixing maleic acid triethanolamine ester, acrylic acid alkylene alkenyl APEO hydroxyethylacrylate copolymer, cellulose ether and water.The synergist is as thermal curing synergist using in the concrete product of thermal curing, by promoting binder materials aquation, improve water mudrock microcosmos structure, make the concrete crushing strength raising 40% ~ 70% at the end of thermal curing, 28 days compression strength of concrete improves 20% ~ 35%, so as to shorten the production cycle, suitable for the thermal curing synergy of the cement products such as assembled architecture component part, concrete brick, especially the thermal curing efficiency positive effect to lifting large dosage Mineral admixture concrete product.
Description
Technical field
The invention belongs to building material technical field, and in particular to a kind of concrete heat maintenance synergist and preparation method thereof
And application.
Background technology
Thermal curing is the indispensable technical process of the concrete products such as precast concrete, concrete brick.Generally, it is anti-
Only too high thermal curing temperature causes that hydrolysis product of cement entringite is decomposed during thermal curing and concrete product is being applied
During form secondary ettringite, concrete structure is damaged, concrete normal pressure thermal curing temperature control is below 80 DEG C.
For the mechanical property for making concrete reach predetermined at the end of thermal curing, the thermal curing time that existing process uses is longer, from
And mould and the turnaround time of maintenance facility is set also accordingly to extend.
The thermal curing of concrete normal pressure, which includes dry heating curing, hydrothermal curing and the maintenance of thermal medium directed circulation, thermal source, includes pot
Stove steam supply, Solar use, air can utilize, but no matter which kind of conserve form using and uses energy mode, can not all improve
Concrete heat conserves efficiency.
CN106003397A discloses " a kind of precast concrete maintenance process and precast concrete curing system ", leads to
Cross and carbon dioxide raising precast concrete thermal curing efficiency is passed through into fog room, accelerate the early strong intensity hair of precast concrete
, but there is complex process in exhibition, the problem of unsuitable large-scale promotion application, large dosage Mineral admixture is contained especially in concrete
When, carbonization consumes the calcium hydroxide needed for pozzolanic reaction, and makes the reduction of aquation system basicity, can promote the steel in concrete
Muscle corrosion.
CN105198264A discloses " a kind of energy-efficient Concrete synergist and preparation method thereof ", and the synergist can lead to
Promotion cement middle and later periods aquation is crossed, reduces concrete cement dosage, its main preparation methods is to be total to 10~25 parts of UFD macromolecules
Polymers (being made up of urea, formaldehyde, neopelex), 10~15 parts of water reducer mother liquors, 3~5 parts of sodium tripolyphosphates, 2
~7 parts of sodium gluconates, 10~15 parts of stabilizers and 33~65 parts of water mixing.It is uncomfortable but the synergist contains slow setting component
For thermal curing concrete product, and due to containing harmful substances such as urea, formaldehyde, limiting its answering in architectural engineering
With.
CN106116224A is disclosed " a kind of multifunctional concrete synergist ", and the synergist can make 20% in concrete~
30% hydrated cementitious that can not bring into normal play effect, its formula are：26~42 parts of diisopropyl ethanolamine, pentaerythrite 2~8
Part, 15~26 parts of wooden sodium sulfonate, 8~16 parts of cetyltrimethylammonium hydroxide, 1~6 part of xanthans, APG 5~
13 parts, 40~80 parts of water.Wooden sodium sulfonate in the synergist has the function that bleed and delays hydrated cementitious, it is impossible to promotes water
Mud early hydration, it is unfavorable that thermal curing concrete strength is developed.
Foregoing invention can promote hydrated cementitious system strength development by physics, chemical action, but do not account for heat and support
Concrete is protected to the influence of the demand and boosting components of synergist to concrete microstructure.
The content of the invention
The present invention is directed to the weak point of existing concrete synergist, it is desirable to provide it is a kind of efficiently, the concrete heat that is easy to get
Synergist is conserved, the synergist has simple production process, and volume is low, and thermal curing synergy is obvious, and concrete strength development is fast etc.
Feature, and late strength of concrete will not be reduced.
A kind of concrete heat conserves synergist, and raw material includes in parts by weight：Maleic acid-triethanolamine ester 2-3 parts, propylene
Acid-alkylene alkenyl APEO-hydroxyethylacrylate copolymer 15-20 parts, cellulose ether 1.5-2 parts, water 70-80 parts.
Preferably, the preparation method of the acrylic acid-alkylene alkenyl APEO-hydroxyethylacrylate copolymer, bag
Include following steps：
Step 1, in parts by weight, 30 parts of water, 30 parts of alkylene alkenyl APEOs and 5 parts of hydroxy-ethyl acrylates are added to
In reactor, stir to alkylene alkenyl APEO and hydroxy-ethyl acrylate and all dissolve；
Step 2, in parts by weight, the hydrogenperoxide steam generator that 0.35 part of mass concentration is 27% is added in reactor, risen
Temperature arrives 45-55 DEG C；
Step 3, in parts by weight, it is 5% by acrylic acid aqueous solution that 8 parts of mass concentrations are 25%, 3 parts of mass concentrations
The sodium thiosulfate solution that the methylpropene sodium sulfonate aqueous solution, 4 parts of mass concentrations are 5% is added drop-wise in reactor, acrylic acid
Solution time for adding is 3-4 hours, the methylpropene sodium sulfonate aqueous solution, sodium thiosulfate solution time for adding 4-5 hours,
45-55 DEG C of insulation reaction 1h；
Step 4, in parts by weight, the sodium hydrate aqueous solution that 15.95 parts of water and 3.7 parts of mass concentrations are 30% is added to
In reactor, pH to 6 is adjusted, obtains acrylic acid-alkylene alkenyl APEO-hydroxyethylacrylate copolymer.
Preferably, the cellulose ether be hydroxypropyl methyl cellulose ether, one kind in ethoxyl methyl cellulose ether or
Two kinds of mixture.
Preferably, 2% solution viscosity specification of the cellulose ether is 200000.
Preferably, the molecular weight of the alkylene alkenyl APEO is 600-5000, preferably 1200-2400.
The preparation method of above-mentioned concrete heat maintenance synergist, is by maleic acid-triethanolamine ester, acrylic acid-alkylene alkene
It is made after base APEO-hydroxyethylacrylate copolymer, cellulose ether and water mixing.
Application of the above-mentioned concrete heat maintenance synergist as thermal curing synergist in concrete.
The concrete heat maintenance synergist of the present invention can be incorporated into concrete directly as thermal curing synergist to be used,
Or pulvis use is made；The 0.1%- of binder materials quality is accounted for during use according to solid masses in concrete heat maintenance synergist
0.2% addition.
Maleic acid-triethanolamine ester, acrylic acid-alkylene alkenyl APEO-hydroxy-ethyl acrylate are copolymerized by the present invention
Thing, cellulose ether and water are sufficiently mixed by certain mass part, can obtain concrete heat maintenance synergist.Its synergy principle is：Profit
Promote C in cement with maleic acid-triethanolamine ester3A aquations and aluminium glue and C2S reaction generation aquation submellite phases, utilize propylene
Acid-alkylene alkenyl APEO-hydroxyethylacrylate copolymer and cellulose ether, it is relatively wet to improve thermal curing inside concrete
Degree, and accelerate pozzolanic reaction process, its beneficial effect is to make the increase of water mudrock microcosmos structure fractal dimension, so as to improve coagulation
Native thermal curing efficiency.
Beneficial effect：
1. the present invention preparation technology it is simple, used raw material are nontoxic, easily be made, and due to acrylic acid-
It need not be heated during alkylene alkenyl APEO-hydroxyethylacrylate copolymer synthesis, therefore whole course of reaction is easily controllable.
2. the present invention has good thermal curing building capability in the case where volume is relatively low.Compared with conventional synergist,
Volume is reduced to 0.1%~0.2% by 0.5%~0.6%, compared with normal concrete material, the resistance to compression at the end of thermal curing
Intensity improves 30%~40%, and compression strength improves 20%~35% within 28 days, can shorten the production cycle more than 30%.
3. present invention improves water mudrock microcosmos structure, compared with normal concrete material, it is steam-cured at the end of Behavior of Hardened Cement Paste glue
Sky is than increase by more than 15%, so as to be obviously improved concrete long-term behaviour and durability.
Embodiment
Following instance has described in more detail concrete heat maintenance synergist prepared according to the methods of the invention and application,
It is to allow person skilled in the art to understand present disclosure and implements according to this, but these examples is in no way intended to limit this hair
Bright scope.
The preparation method of acrylic acid of the present invention-alkylene alkenyl APEO-hydroxyethylacrylate copolymer, bag
Include following steps：
Step 1, in parts by weight, 30 parts of water, 30 parts of alkylene alkenyl APEOs and 5 parts of hydroxy-ethyl acrylates are added to
In reactor, stir to alkylene alkenyl APEO and hydroxy-ethyl acrylate and all dissolve；
Step 2, in parts by weight, the hydrogenperoxide steam generator that 0.35 part of mass concentration is 27% is added in reactor, risen
Temperature arrives 45-55 DEG C；
Step 3, in parts by weight, it is 5% by acrylic acid aqueous solution that 8 parts of mass concentrations are 25%, 3 parts of mass concentrations
The sodium thiosulfate solution that the methylpropene sodium sulfonate aqueous solution, 4 parts of mass concentrations are 5% is added drop-wise in reactor, acrylic acid
Solution time for adding is 3-4 hours, the methylpropene sodium sulfonate aqueous solution, sodium thiosulfate solution time for adding 4-5 hours,
45-55 DEG C of insulation reaction 1h；
Step 4, in parts by weight, the sodium hydrate aqueous solution that 15.95 parts of water and 3.7 parts of mass concentrations are 30% is added to
In reactor, pH to 6 is adjusted, obtains acrylic acid-alkylene alkenyl APEO-hydroxyethylacrylate copolymer.
Embodiment 1
By weight, by 3 parts of maleic acid-triethanolamine ester, acrylic acid-alkylene alkenyl APEO 1200- propylene
75 parts of sour 20 parts of hydroxyl ethyl ester copolymer, 2 parts of ethoxyl methyl cellulose ether and water are stirred 30 minutes in reactor and mixed to uniform
Close, obtain concrete heat maintenance synergist H1.
Embodiment 2
By weight, by 2.5 parts of maleic acid-triethanolamine ester, acrylic acid-alkylene alkenyl APEO 2400- third
78 parts of 8 parts of olefin(e) acid hydroxyl ethyl ester copolymer 1,1.5 parts of ethoxyl methyl cellulose ether and water stir 35 minutes to equal in reactor
Even mixing, obtain concrete heat maintenance synergist H2.
Embodiment 3
By weight, by 3 parts of maleic acid-triethanolamine ester, acrylic acid-alkylene alkenyl APEO 1200- propylene
80 parts of sour 5 parts of hydroxyl ethyl ester copolymer 1,2 parts of hydroxypropyl methyl cellulose ether and water are stirred 40 minutes in reactor and mixed to uniform
Close, obtain concrete heat maintenance synergist H3.
Embodiment 4
By weight, by 2 parts of maleic acid-triethanolamine ester, acrylic acid-alkylene alkenyl APEO 2400- propylene
77 parts of sour 9 parts of hydroxyl ethyl ester copolymer 1,2 parts of hydroxypropyl methyl cellulose ether and water are stirred 30 minutes in reactor and mixed to uniform
Close, obtain concrete heat maintenance synergist H4.
Embodiment 5
By weight, by 2.5 parts of maleic acid-triethanolamine ester, acrylic acid-alkylene alkenyl APEO 2400- third
6 parts of olefin(e) acid hydroxyl ethyl ester copolymer 1,1 part of ethoxyl methyl cellulose ether, 1 part of hydroxypropyl methyl cellulose ether, 79.5 parts of water are anti-
Stirring in kettle is answered to obtain concrete heat maintenance synergist H5 to uniform mixing in 30 minutes.
According to GB 25779-2010《Load-bearing concrete porous brick》Standard, prepare hole ratio 30%, strength grade MU20
60 DEG C of thermal curing 5-9 hours of concrete brick of thermal curing synergist and 60 DEG C of thermal curings 9 hours are mixed in load-bearing concrete brick, contrast
Concrete brick gain in strength and 28d compression strength.
According to GB/T 24492-2009《Non-bearing concrete hollow bricks》Standard, prepare density rating 1100kg/m3, it is strong
Grade MU7.5 load-bearing concrete brick is spent, contrasts the 60 DEG C of thermal curing 5-9 hours of concrete brick for mixing thermal curing synergist and 60 DEG C
The concrete brick gain in strength of thermal curing 9 hours and 28d compression strength.
According to JGJ 1-2014《Prefabricated concrete structure technical regulation》, prepare 16~18cm of the slump and be used to produce steel
The C35 concrete of reinforced concrete prefabricated component, the strong concrete of 70 DEG C of contrast thermal curing 6~10 hours and 70 DEG C of thermal curings 10 hours
Degree increases and 28d compression strength.
According to JGJ 1-2014《Prefabricated concrete structure technical regulation》, it is pre- for producing to prepare 16~18cm of the slump
The C50 concrete of prestressed concrete prefabricated component, contrast 70 DEG C of thermal curing 6-10 hours and the concrete of 70 DEG C of thermal curings 10 hours
Gain in strength and 28d compression strength.
Application examples 1
For influence of the quantitative analysis concrete heat maintenance synergist to water mudrock microcosmos structure and intensity, this experiment is prepared
Water-cement ratio is 0.35 and 0.42 concrete sample, and the volume of synergist is calculated as binder materials (by 60 parts of P. II with solid part
I grade of flyash composition of 42.5 grades of portland cements and 40 parts of low calciums) quality 0.1%-0.2%, concrete curing system is：20
It is DEG C quiet stop 5 hours after be warming up within 1 hour 60 DEG C of constant temperature thermal curing 8 hours again, evaluate H1, H3, H5 in embodiment respectively to mixed
The influence of solidifying soil microstructure and intensity.Result of the test is summarized in table 1.
Table 1 mixes the concrete microstructure and intensity of thermal curing synergist
As it can be seen from table 1 the thermal curing synergy for accounting for binder materials quality 0.10%-0.20% is mixed in concrete
Agent, it has been significantly increased after thermal curing and has continued the empty ratio of glue of maintenance Behavior of Hardened Cement Paste into concrete during 28d after thermal curing and resist
Compressive Strength.When water-cement ratio is 0.35, the concrete of thermal curing synergist and the compressive strength rate after normal concrete thermal curing are mixed
Reach more than 185%, 28d compression strength and improve about 30%, and mix the concrete of thermal curing synergist at the end of thermal curing
Compression strength of the compression strength close to normal concrete 28d；Water-cement ratio be 0.42 when, at the end of thermal curing and 28d resistance to compression
Intensity ratio respectively greater than 165% and 133%, when synergist volume is higher, the concrete crushing strength at the end of thermal curing reaches
Normal concrete 28d compression strength.Result of the test shows that thermal curing synergist promotes hydrated cementitious and flyash volcanic ash
Pozzolanic reaction during thermal curing, so as to improve Behavior of Hardened Cement Paste consistency, obtain early strong and enhancing double action effect.
Application examples 2
The concrete that doping quantity of fly ash is 50% is prepared, water-cement ratio 0.42, thermal curing synergist volume is in terms of solid part
For the 0.15% of cement and flyash gross weight, measure respectively concrete brick 20 DEG C it is quiet stop 5 hours after be warming up within 1 hour 60 DEG C again
Under the conditions of constant temperature thermal curing 5-9 hours, concrete heat conserves influence of the synergist to concrete brick intensity.Result of the test such as table 2
It is shown.
The influence of the thermal curing agent of table 2 and constant temperature time to MU20 concrete brick compression strength
From table 2, compared with the normal concrete brick of 60 DEG C of constant temperature thermal curings 9 hours, mix 0.15% concrete heat and support
The concrete brick of synergist is protected in 60 DEG C of constant temperature thermal curing 5-9 hours, the compression strength at the end of thermal curing reaches MU20 will
Ask, therefore, it is 5-6 hours that constant temperature time, which may be selected,.So, conserve facility and daily 3 turnover be changed to by original daily 2 turnover,
Production efficiency can improve 50%.
The concrete that doping quantity of fly ash is 60% is now prepared, water-cement ratio 0.50, thermal curing synergist volume is with solid part
Be calculated as the 0.20% of cement and flyash gross weight, respectively evaluate non-load-bearing concrete brick 20 DEG C it is quiet stop 5 hours after 1 hour heat up
To under the conditions of 60 DEG C again constant temperature thermal curing 5-9 hours, concrete heat conserves influence of the synergist to concrete brick intensity, as a result shows
In table 3.
The influence of the thermal curing agent of table 3 and constant temperature time to MU7.5 concrete brick compression strength
To be known by table 3, thermal curing synergist of the invention has more preferable action effect to lower intensity level concrete brick,
60 DEG C of constant temperature thermal curings 5 hours, the compression strength of concrete brick has reached the 85% of standard value.Therefore, constant temperature thermal curing is selected
Time is 5 hours, can exceed the former maintaining process constant temperature intensity index of 9 hours, saves 4 hours thermal curing time, also makes maintenance
The daily number of turnover of facility is brought up to 3 times by original 2 times.
Application examples 4
Now prepare doping quantity of fly ash be 16%, the concrete that S95 slag micropowder volumes are 24%, water-cement ratio 0.42, heat
Maintenance synergist volume is calculated as the 0.15% of cement, flyash and slag micropowder gross weight with solid part, and test is quiet at 20 DEG C respectively
70 DEG C are warming up within 1 hour after stopping 5 hours again under the conditions of constant temperature thermal curing 6-10 hours, concrete heat conserves synergist to concrete
The influence of intensity, the results are shown in Table 4.
The influence of the thermal curing agent of table 4 and constant temperature time to C35 concrete crushing strengths
Found by table 4, thermal curing synergist accelerates strength development of the C35 concrete under heat curing condition, mixes heat and supports
The compressive strength rate normal concrete constant temperature thermal curing for protecting the concrete constant temperature thermal curing 6 hours of synergist improves for 10 hours
25.4%, 28d compression strength improve 1 strength grade.Therefore, constant temperature thermal curing in 6 hours is selected, concrete strength meets standard
It is required that.
Application examples 5
Now prepare doping quantity of fly ash be 16%, the concrete that S95 slag micropowder volumes are 24%, water-cement ratio 0.35, heat
Maintenance synergist volume is calculated as the 0.20% of cement, flyash and slag micropowder gross weight with solid part, and test is quiet at 20 DEG C respectively
60 DEG C are warming up within 1 hour after stopping 5 hours again under the conditions of constant temperature thermal curing 6-10 hours, thermal curing synergist is to concrete strength
Influence, test result is listed in table 5.
The influence of the thermal curing agent of table 5 and constant temperature time to C50 concrete crushing strengths
By table 5 it can be found that thermal curing synergist is notable to the C50 concrete enhancing effects of the invention prepared, constant temperature heating
Maintenance 10 hours, strength grade of concrete basically reaches C70；Constant temperature thermal curing 6 hours, strength grade of concrete reaches C60.
Claims (7)
1. a kind of concrete heat conserves synergist, it is characterised in that：Raw material includes in parts by weight：Maleic acid-triethanolamine ester
2-3 parts, acrylic acid-alkylene alkenyl APEO-hydroxyethylacrylate copolymer 15-20 parts, cellulose ether 1.5-2 parts, water
70-80 parts.
2. concrete heat according to claim 1 conserves synergist, it is characterised in that：The acrylic acid-alkylene alkenyl gathers
The preparation method of oxygen vinethene-hydroxyethylacrylate copolymer, comprises the following steps：
Step 1, in parts by weight, 30 parts of water, 30 parts of alkylene alkenyl APEOs and 5 parts of hydroxy-ethyl acrylates are added into reaction
In kettle, stir to alkylene alkenyl APEO and hydroxy-ethyl acrylate and all dissolve；
Step 2, in parts by weight, the hydrogenperoxide steam generator that 0.35 part of mass concentration is 27% is added in reactor, be warming up to
45-55℃；
Step 3, in parts by weight, the methyl-prop for being 5% by acrylic acid aqueous solution that 8 parts of mass concentrations are 25%, 3 parts of mass concentrations
The sodium thiosulfate solution that alkene sulfonic acid sodium water solution, 4 parts of mass concentrations are 5% is added drop-wise in reactor, and acrylic acid solution is added dropwise
Time is 3-4 hours, and the methylpropene sodium sulfonate aqueous solution, sodium thiosulfate solution time for adding 4-5 hours, 45-55 DEG C is protected
Temperature reaction 1h；
Step 4, in parts by weight, the sodium hydrate aqueous solution that 15.95 parts of water and 3.7 parts of mass concentrations are 30% is added to reaction
In kettle, pH to 6 is adjusted, obtains acrylic acid-alkylene alkenyl APEO-hydroxyethylacrylate copolymer.
3. concrete heat according to claim 1 conserves synergist, it is characterised in that：The cellulose ether is hydroxypropyl first
The mixture of one or both of base cellulose ether, ethoxyl methyl cellulose ether.
4. concrete heat according to claim 1 conserves synergist, it is characterised in that：2% aqueous solution of the cellulose ether
Viscosity specification is 200000.
5. concrete heat according to claim 2 conserves synergist, it is characterised in that：The alkylene alkenyl APEO
Molecular weight be 600-5000, preferably 1200-2400.
6. the preparation method of the concrete heat maintenance synergist described in claim 1, it is characterised in that：By the ethanol of maleic acid-three
It is made after amine ester, acrylic acid-alkylene alkenyl APEO-hydroxyethylacrylate copolymer, cellulose ether and water mixing.
7. application of the concrete heat maintenance synergist as thermal curing synergist in concrete described in claim 1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109133710A (en) * | 2018-09-12 | 2019-01-04 | 湖北工业大学 | A kind of naphthalene water reducer matching preparation method for subtracting jelly |
| CN114853385A (en) * | 2022-06-08 | 2022-08-05 | 广东腾昊建设工程有限公司 | Multi-component composite synergist suitable for thermal curing concrete and preparation method thereof |
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| EP0544179A1 (en) * | 1991-11-27 | 1993-06-02 | Tasei Rotec Co., Ltd. | Method for adjusting consistency |
| CN103772624A (en) * | 2014-01-10 | 2014-05-07 | 陕西科技大学 | Early-strength polycarboxylate concrete water-reducing agent and preparation method thereof |
| CN104446115A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Concrete synergist |
| CN106517873A (en) * | 2016-12-22 | 2017-03-22 | 青岛巨能管道设备有限公司 | Concrete synergist |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0544179A1 (en) * | 1991-11-27 | 1993-06-02 | Tasei Rotec Co., Ltd. | Method for adjusting consistency |
| CN103772624A (en) * | 2014-01-10 | 2014-05-07 | 陕西科技大学 | Early-strength polycarboxylate concrete water-reducing agent and preparation method thereof |
| CN104446115A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Concrete synergist |
| CN106517873A (en) * | 2016-12-22 | 2017-03-22 | 青岛巨能管道设备有限公司 | Concrete synergist |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109133710A (en) * | 2018-09-12 | 2019-01-04 | 湖北工业大学 | A kind of naphthalene water reducer matching preparation method for subtracting jelly |
| CN109133710B (en) * | 2018-09-12 | 2021-06-18 | 湖北工业大学 | Preparation method of naphthalene water reducer matching glue reducer |
| CN114853385A (en) * | 2022-06-08 | 2022-08-05 | 广东腾昊建设工程有限公司 | Multi-component composite synergist suitable for thermal curing concrete and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN107651876B (en) | 2020-06-30 |
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