CN108101401A - A kind of composite water-reducing agent - Google Patents
A kind of composite water-reducing agent Download PDFInfo
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- CN108101401A CN108101401A CN201711309733.3A CN201711309733A CN108101401A CN 108101401 A CN108101401 A CN 108101401A CN 201711309733 A CN201711309733 A CN 201711309733A CN 108101401 A CN108101401 A CN 108101401A
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- water
- reducing agent
- composite water
- entrainment
- agent according
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 18
- 238000005260 corrosion Methods 0.000 claims abstract description 17
- 230000007797 corrosion Effects 0.000 claims abstract description 17
- 239000003112 inhibitor Substances 0.000 claims abstract description 17
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 16
- 230000007062 hydrolysis Effects 0.000 claims abstract description 15
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 21
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 20
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical group [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 16
- 239000006228 supernatant Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 235000010288 sodium nitrite Nutrition 0.000 claims description 8
- 239000013530 defoamer Substances 0.000 claims description 7
- 239000000413 hydrolysate Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 230000003301 hydrolyzing effect Effects 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 230000003467 diminishing effect Effects 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 29
- 239000000654 additive Substances 0.000 abstract description 9
- 230000000996 additive effect Effects 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000004566 building material Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 231100000252 nontoxic Toxicity 0.000 abstract description 3
- 230000003000 nontoxic effect Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000011150 reinforced concrete Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000002156 mixing Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007728 cost analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Inorganic materials [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to building material technical fields, and in particular to a kind of composite water-reducing agent.Composite water-reducing agent provided by the present invention is formulated by weight percentage by following components：Gutter oil 3 8% after polycarboxylate dehydragent 14 20%, corrosion inhibitor 2 5.5%, air-entrainment 0.5 2%, retarder 1 4%, antifoaming agent 0.1 0.5%, hydrolysis, remaining is water.Composite water-reducing agent provided by the present invention, all detection projects meet the index in GB8076 2008, production cost is low, a large amount of wastes that are easy to use and not easily causing additive, save building input cost, it is nontoxic, water-reducing rate is high, the density of concrete can be effectively improved, enhance impermeability, play the role of water proof anti-seepage, and there is no corrosivity to reinforcing bar, can be widely applied in industry, the roof of civil buildings, toilet, kitchen interior and exterior wall, pond, water tower, all kinds of reinforced concrete structures.
Description
Technical field
The invention belongs to building material technical fields, and in particular to a kind of composite water-reducing agent.
Background technology
Water-reducing agent refers under conditions of concrete workability, cement consumption are constant, can reduce mixing water amount, improve and mix
The additive of solidifying soil intensity；It hinders or breaks by surface-active action, complexing, electrostatic repulsion forces or steric repulsion power etc.
The flocculent structure of bad cement granules, so as to while can save cement consumption, ensure the workability and intensity of concrete, subtract
Aqua is a kind of concrete admixture that usage amount is maximum, purposes is most wide.
Concrete admixture is mixed during ready-mixed concrete, can significantly improve the chemicals of concrete performance
Matter.The characteristics of concrete admixture is that wide in variety, volume is small, be affected to the performance of concrete with small investment, it is quick,
Technical economic benefit outstanding feature, concrete admixture includes water-reducing agent, air entraining agent, corrosion inhibitor, waterproofing agent etc., existing mixed
Solidifying soil additive when in use generally using it is as needed individually add by the way of mix into concrete.It is this individually to add
Mode there are the drawbacks of be：It first, operation is relatively complicated, is generally operated, is operated by worker when building site carries out mixing addition
Mode and weighing are more coarse, there is very big error, so as to influence the wave of the quality of the concrete after mixing and stirring or additive
Take；Second is that the complementation there may be performance or synergistic effect between different additive components, distinguish again after independent purchase
According to it is respective illustrate addition after, each additive cannot may play each best effect, and the performance of concrete is subject to
It influences, adds input cost and effect is not ideal enough.
The content of the invention
It is an object of the invention to provide a kind of composite water-reducing agents, and the composite water-reducing agent production cost is low, and water-reducing effect is good
And the concrete performance after mixing and stirring is excellent, can reduce the input cost of engineered building materials.
The present invention is achieved through the following technical solutions above-mentioned technical purpose：
Composite water-reducing agent provided by the present invention is formulated by weight percentage by following components：
Polycarboxylate dehydragent 14-20%
Corrosion inhibitor 2-5.5%
Air-entrainment 0.5-2%
Retarder 1-4%
Antifoaming agent 0.1-0.5%
Gutter oil 3-8% after hydrolysis
Remaining is water.
Specifically, in above-mentioned composite water-reducing agent, the gutter oil after the hydrolysis obtains after steps of processing：（1）
The gutter oil that collection obtains is subjected to precipitation filtration treatment；（2）Supernatant is taken, by supernatant and water with volume ratio 1:The ratio of 3-5 into
Reaction 4-8h is hydrolyzed in row mixing under the conditions of 170-240 DEG C；（3）Separate and collect upper strata hydrolysate.
Preferably：The composite water-reducing agent is formulated by weight percentage by following components：
Polycarboxylate dehydragent 15-17%
Corrosion inhibitor 3-4%
Air-entrainment 1-1.5%
Retarder 2-3%
Antifoaming agent 0.2-0.4%
Gutter oil 5-7% after hydrolysis
Remaining is water.
Preferably, the solid content of the polycarboxylate dehydragent be 40%, polycarboxylate dehydragent be at present in the world most before
Edge, scientific and technological content highest, a kind of polycarboxylate that application prospect is best, comprehensive performance is optimal.
Preferably, the corrosion inhibitor is sodium nitrite, and sodium nitrite has good effect to reinforcing bar is prevented to get rusty, while sub-
Sodium nitrate is also a kind of efficient concrete antifreezer.
Preferably, the air-entrainment is 30% hydrogen peroxide, and hydrogen peroxide can make inside concrete cloth as air-entrainment
Full bubble, makes material lighten, can also stop sound, has good thermal insulation function, meanwhile, hydrogen peroxide can be used as sterilization
Agent ensures that the composite water-reducing agent is not easy moldy metamorphism, its additive amount must not exceed 1.5% when air-entrainment is hydrogen peroxide, otherwise can
Influence the waterproof effect of concrete.
Preferably, the retarder is Lignosite, can improve concrete workability, improve the quality of concrete,
Water-reducing effect can be improved simultaneously.
Preferably, the antifoaming agent is organic silicon defoamer, organic the problem of mainly for blistering in mortar whipping process
Silicon defoaming agent helps to inhibit to blister.
In the present invention, gutter oil is as a kind of raw material cheap and easy to get, containing substantial amounts of in the component obtained after hydrolysis
Aliphatic acid, for the aliphatic acid as the waterproofing agent in composite water-reducing agent, cement mortar or concrete after mixing and stirring do not generate small split
Line and pore can form entirety after construction with cement basal plane, be formed and the same life cycle of building in upstream face and back side
Permanent waterproof layer, on the one hand can reach good waterproof effect, on the other hand it is made by hydrolyzing, nontoxic,
Its cheap market price.
Composite water-reducing agent provided by the present invention, all detection projects meet the index in GB8076-2008, production
At low cost, building input cost is saved in a large amount of wastes that are easy to use and not easily causing additive, and nontoxic, water-reducing rate is high,
The density of concrete can be effectively improved, enhances impermeability, plays the role of water proof anti-seepage, and reinforcing bar is not corroded
Property can be widely applied for industry, the roof of civil buildings, toilet, kitchen interior and exterior wall, pond, water tower, all kinds of reinforcing bars mix
In Xtah Crude Clay structure, suitable for being promoted and applied.
Composite water-reducing agent provided by the present invention can reduce the input cost in engineered building materials in terms of three：
（1）Compound water-reducing agent is made, a mix reduces waste by reducing addition number；（2）It is reduced using cheap raw material
The production cost of entire composite water-reducing agent, ensure that water-reducing effect, improves the performance of the concrete after mix；（3）Using each
Existing performance complement or synergistic effect between a component reduce the dosage of each ingredient.
Specific embodiment
Embodiment 1
Composite water-reducing agent in the present embodiment is formulated by weight percentage by following components：Polycarboxylate dehydragent 14%,
Gutter oil 3% after corrosion inhibitor 2%, air-entrainment 0.5%, retarder 1%, antifoaming agent 0.1%, hydrolysis, remaining is water.
Gutter oil after hydrolysis obtains after steps of processing：（1）The gutter oil that collection obtains precipitated
Filter is handled；（2）Supernatant is taken, by supernatant and water with volume ratio 1:3 ratio is mixed, and is hydrolyzed under the conditions of 170 DEG C anti-
Answer 8h；（3）Separate and collect upper strata hydrolysate.
The solid content of polycarboxylate dehydragent is 40%, and corrosion inhibitor is sodium nitrite, and air-entrainment is 30% hydrogen peroxide, is delayed
Solidifying agent is Lignosite, and antifoaming agent is organic silicon defoamer.
Embodiment 2
Composite water-reducing agent in the present embodiment is formulated by weight percentage by following components：Polycarboxylate dehydragent 15%,
Gutter oil 5% after corrosion inhibitor 3%, air-entrainment 1%, retarder 2%, antifoaming agent 0.2%, hydrolysis, remaining is water.
Gutter oil after hydrolysis obtains after steps of processing：（1）The gutter oil that collection obtains precipitated
Filter is handled；（2）Supernatant is taken, by supernatant and water with volume ratio 1:4 ratio is mixed, and is hydrolyzed under the conditions of 200 DEG C anti-
Answer 6h；（3）Separate and collect upper strata hydrolysate.
The solid content of polycarboxylate dehydragent is 40%, and corrosion inhibitor is sodium nitrite, and air-entrainment is 30% hydrogen peroxide, is delayed
Solidifying agent is Lignosite, and antifoaming agent is organic silicon defoamer.
Embodiment 3
Composite water-reducing agent in the present embodiment is formulated by weight percentage by following components：Polycarboxylate dehydragent 17%,
Gutter oil 7% after corrosion inhibitor 4%, air-entrainment 1.5%, retarder 3%, antifoaming agent 0.4%, hydrolysis, remaining is water.
Gutter oil after hydrolysis obtains after steps of processing：（1）The gutter oil that collection obtains precipitated
Filter is handled；（2）Supernatant is taken, by supernatant and water with volume ratio 1:4 ratio is mixed, and is hydrolyzed under the conditions of 200 DEG C anti-
Answer 6h；（3）Separate and collect upper strata hydrolysate.
The solid content of polycarboxylate dehydragent is 40%, and corrosion inhibitor is sodium nitrite, and air-entrainment is 30% hydrogen peroxide, is delayed
Solidifying agent is Lignosite, and antifoaming agent is organic silicon defoamer.
Embodiment 4
Composite water-reducing agent in the present embodiment is formulated by weight percentage by following components：Polycarboxylate dehydragent 20%,
Gutter oil 8% after corrosion inhibitor 5.5%, air-entrainment 2%, retarder 4%, antifoaming agent 0.5%, hydrolysis, remaining is water.
Gutter oil after hydrolysis obtains after steps of processing：（1）The gutter oil that collection obtains precipitated
Filter is handled；（2）Supernatant is taken, by supernatant and water with volume ratio 1:5 ratio is mixed, and is hydrolyzed under the conditions of 240 DEG C anti-
Answer 4h；（3）Separate and collect upper strata hydrolysate.
The solid content of polycarboxylate dehydragent is 40%, and corrosion inhibitor is sodium nitrite, and air-entrainment is 30% hydrogen peroxide, is delayed
Solidifying agent is Lignosite, and antifoaming agent is organic silicon defoamer.
Volume of the present invention is：The addition content of the composite water-reducing agent is the 1%-2% of cementitious material in concrete.
The performance indicator of product in 1 embodiment of table
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Appearance | It is light yellow | It is light yellow | It is light yellow | It is light yellow |
| Ph values | 7.5 | 7.5 | 7.4 | 7.1 |
| Net paddle fluidity | 273 | 317 | 290 | 260 |
| Alkali content | ≤0.5% | ≤0.5% | ≤0.5% | ≤0.5% |
| Chlorion | ≤0.005% | ≤0.005% | ≤0.005% | ≤0.005% |
Composite water-reducing agent obtained in above-described embodiment is mixed in concrete respectively（Volume is 1.5%）, according to standard detection side
Method is detected, and Testing index is as shown in the table：
2 concrete performance examination result of table
From Tables 1 and 2, composite water-reducing agent provided by the present invention complies fully with high efficiency water reducing agent in GB8076-2008
Standard.
Contrast experiment
By the common polycarboxylate dehydragent bought in the market, sodium nitrite corrosion inhibitor, 30% hydrogen peroxide air-entrainment, lignin
Sulfoacid calcium retarder, organic silicon defoamer are added to according to the additive amount of recommendation mixed in concrete after, according to standard
Detection method is detected it, and the testing result of concrete performance is as shown in table 3：
The testing result of 3 contrast experiment of table
By the comparison of table 3 and table 2, we may determine that water-reducing agent water-reducing effect provided by the present invention is more preferable, after mix
The water resistance of concrete etc. be superior to control experiment group.
We draw after carrying out cost analysis to it：In the cost implementation 1,2,3,4 for mixing one ton of concrete admixture
It is about 3 yuan lower than comparison experimental group.
The foregoing is merely the better embodiments of the present invention, we should be appreciated that all in the spirit and principles in the present invention
Within any improvement for being done and equivalent substitution, be all contained within the protection domain of claims of the present invention.
Claims (8)
1. a kind of composite water-reducing agent, which is characterized in that be formulated by weight percentage by following components：Polycarboxylate diminishing
Ground after agent 14-20%, corrosion inhibitor 2-5.5%, air-entrainment 0.5-2%, retarder 1-4%, antifoaming agent 0.1-0.5%, hydrolysis
Ditch oil 3-8%, remaining is water.
2. composite water-reducing agent according to claim 1, which is characterized in that the gutter oil after the hydrolysis passes through following steps
It is obtained after processing：（1）The gutter oil that collection obtains is subjected to precipitation filtration treatment；（2）Supernatant is taken, by supernatant and water with volume ratio
1:The ratio of 3-5 is mixed, and reaction 4-8h is hydrolyzed under the conditions of 170-240 DEG C；（3）Separate and collect upper strata hydrolysate
.
3. composite water-reducing agent according to claim 1, which is characterized in that prepared by weight percentage by following components and
Into：Polycarboxylate dehydragent 15-17%, corrosion inhibitor 3-4%, air-entrainment 1-1.5%, retarder 2-3%, antifoaming agent 0.2-
0.4%th, the gutter oil 5-7% after hydrolyzing, remaining is water.
4. composite water-reducing agent according to claim 1, which is characterized in that the solid content of the polycarboxylate dehydragent is
40%。
5. composite water-reducing agent according to claim 1, which is characterized in that the corrosion inhibitor is sodium nitrite.
6. composite water-reducing agent according to claim 1, which is characterized in that the air-entrainment is 30% hydrogen peroxide.
7. composite water-reducing agent according to claim 1, which is characterized in that the retarder is Lignosite.
8. composite water-reducing agent according to claim 1, which is characterized in that the antifoaming agent is organic silicon defoamer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309733.3A CN108101401A (en) | 2017-12-11 | 2017-12-11 | A kind of composite water-reducing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309733.3A CN108101401A (en) | 2017-12-11 | 2017-12-11 | A kind of composite water-reducing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108101401A true CN108101401A (en) | 2018-06-01 |
Family
ID=62209584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711309733.3A Pending CN108101401A (en) | 2017-12-11 | 2017-12-11 | A kind of composite water-reducing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108101401A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050188896A1 (en) * | 2004-02-26 | 2005-09-01 | Construction Research & Technology Gmbh | Amine containing strength improvement admixture |
| CN102786249A (en) * | 2012-08-21 | 2012-11-21 | 武汉格瑞林建材科技股份有限公司 | Efficient polycarboxylic water reducer modified from illegal cooking oil |
| CN105347726A (en) * | 2015-10-16 | 2016-02-24 | 同济大学 | Anticorrosive composite polycarboxylate superplasticizer with high slump loss resistance, and preparation method and application thereof |
-
2017
- 2017-12-11 CN CN201711309733.3A patent/CN108101401A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050188896A1 (en) * | 2004-02-26 | 2005-09-01 | Construction Research & Technology Gmbh | Amine containing strength improvement admixture |
| CN102786249A (en) * | 2012-08-21 | 2012-11-21 | 武汉格瑞林建材科技股份有限公司 | Efficient polycarboxylic water reducer modified from illegal cooking oil |
| CN105347726A (en) * | 2015-10-16 | 2016-02-24 | 同济大学 | Anticorrosive composite polycarboxylate superplasticizer with high slump loss resistance, and preparation method and application thereof |
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