CN110436818A - A kind of tunnel concrete water-reducing agent - Google Patents
A kind of tunnel concrete water-reducing agent Download PDFInfo
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- CN110436818A CN110436818A CN201910638446.XA CN201910638446A CN110436818A CN 110436818 A CN110436818 A CN 110436818A CN 201910638446 A CN201910638446 A CN 201910638446A CN 110436818 A CN110436818 A CN 110436818A
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- water
- reducing agent
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- reaction kettle
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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
- 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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- 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 discloses a kind of tunnel concrete water-reducing agents, it is related to cement water reducing agent technical field, the water-reducing agent includes following components in terms of mass fraction: 40-45 parts of water, common 20-24 parts of high performance water reducing agent of polyocarboxy acid mother liquor, 5-8 parts of viscosity modifier, 10-12 parts of flocculation aid, 16-18 parts of naphthalene sulfonate formaldehyde condensation polymer of β base, naphthalenesulfonateformaldehyde formaldehyde is condensed 10-16 parts, 15-18 parts of neopelex, 12-15 parts of isooctyltriethoxysilane, 18-20 parts of poly glycol monomethyl ether, 6-10 parts of suspending agent, 7-10 parts of early strength agent, 6-9 parts and air entraining agent 8-11 parts of defoaming agent.The tunnel concrete water-reducing agent, pass through neopelex, for anionic surfactant, alkali, diluted acid and hard water chemical property are stablized, it is more suitable for being used in constructing tunnel in concrete, the cement water reducing agent can be improved the freezing tolerance of concrete, impermeability, resistance to corrosion, extend engineering structure service life and have good effect, be suitable for the engineerings such as constructing tunnel.
Description
Technical field
The present invention relates to cement water reducing agent technical field, specially a kind of tunnel concrete water-reducing agent.
Background technique
During Concrete, in the extensive concreting process of especially larger tunnel construction, need to add
Enter concrete admixture to improve the pouring quality of concrete, water-reducing agent can not change as important concrete admixture
It can be reduced water consumption under the conditions of change sand, cement, improve concrete strength and workability.
It uses in tunnel in cement water reducing agent use process, it, generally can be in order to meet the service life of concrete
Some additives are added to carry out enhancing processing to concrete in the inside of concrete, but water-reducing agent is in use, in constructing tunnel
In the process, environment is more moist, and concrete perfusion under water is difficult to when pouring, so that early strength of concrete increases and durability
Difference.
Summary of the invention
The object of the invention is in order to make up for the deficiencies of the prior art, provide a kind of tunnel concrete water-reducing agent,
It has the advantages that early strength is small and durability is good, solves tunnel water-reducing agent early strength greatly and durability is poor asks
Topic.
The present invention is in order to solve the above technical problems, provide the following technical solutions: a kind of tunnel concrete water-reducing agent, described
Water-reducing agent includes following components in terms of mass fraction: 40-45 parts of water, glues 20-24 parts of common high performance water reducing agent of polyocarboxy acid mother liquor
Regulator 5-8 parts of degree, 10-12 parts of flocculation aid, 16-18 parts of β base naphthalene sulfonate formaldehyde condensation polymer, naphthalenesulfonateformaldehyde formaldehyde are condensed 10-16
Part, is hanged 15-18 parts of neopelex, 12-15 parts of isooctyltriethoxysilane, 18-20 parts of poly glycol monomethyl ether
Agent 6-10 parts floating, 7-10 parts of early strength agent, 6-9 parts of defoaming agent and 8-11 parts of air entraining agent.
Further, the water-reducing agent includes following components: the high property of 41-44 parts of water, common polycarboxylic acids in terms of mass fraction
It can 21-23 parts of water-reducing agent mother liquor, 5-8 parts of viscosity modifier, 10-12 parts of flocculation aid, β base naphthalene sulfonate formaldehyde condensation polymer 16-17
Part, naphthalenesulfonateformaldehyde formaldehyde are condensed 11-15 parts, 16-18 parts of neopelex, 13-15 parts of isooctyltriethoxysilane, gather
18-20 parts of glycol monoethyl ether, 7-10 parts of suspending agent, 8-10 parts of early strength agent, 7-9 parts of defoaming agent and 9-11 parts of air entraining agent.
Further, the common high performance water reducing agent of polyocarboxy acid mother liquor is lipid high-performance water reducing agent mother liquor.
By using above-mentioned technical proposal, keep water-reducing agent more stable.
Further, the viscosity modifier is polyacrylamide emulsifier.
By using above-mentioned technical proposal, preferably water-reducing agent is emulsified.
Further, the formula of the flocculation aid includes 5-6 parts of aluminum sulfate and 5-6 parts of zinc sulfate.
By using above-mentioned technical proposal, preferably increase the solidifiability of concrete.
Further, the early strength agent is technical grade triethanolamine.
By using above-mentioned technical proposal, preferably shorten cement concrete setting time.
Further, the air entraining agent is fatty alcohol-ether sodium sulfate.
By using above-mentioned technical proposal, concrete flowability is improved, in introducing during mixing and stirring for concrete mix
A large amount of equally distributed closures and stable micro-bubble.
Further, preparation method includes the following steps:
S1, common high performance water reducing agent of polyocarboxy acid mother liquor, β base naphthalene sulfonate formaldehyde condensation polymer, naphthalenesulfonateformaldehyde formaldehyde are condensed,
Neopelex, isooctyltriethoxysilane and poly glycol monomethyl ether are added in reaction kettle；
S2 is stirred the mixture in reaction kettle, and stirring while is gradually warmed up reaction kettle inside, until
It is uniformly mixed；
Reactor temperature is increased to 120 degree, stirred 2 hours, and reacted 10-12 hours to it by S3；
The temperature of mixture in reaction kettle is reduced to 50-60 degrees Celsius by S4, be added water, viscosity modifier, flocculation aid,
Suspending agent, early strength agent, defoaming agent and air entraining agent；
S5 keeps temperature-resistant in reaction kettle, at the uniform velocity stirs 2 hours, to will be anti-in a manner of vacuumizing in reaction kettle
Excessive moisture is extracted out during answering.
Compared with prior art, the tunnel concrete water-reducing agent have it is following the utility model has the advantages that
1, the present invention can be improved acidproof, the alkaline-resisting and resistance to hard water of concrete by β base naphthalene sulfonate formaldehyde condensation polymer,
With good diffusivity, by being provided with viscosity modifier, the viscosity of polymer can be preferably reduced, increases mobility,
The problem for avoiding causing fluid ability difference in tunnel grouting, and concrete structure is used for by isooctyltriethoxysilane
Anti-corrosion, and anti-corrosion effect is excellent and durability is good.
2, the present invention is anionic surfactant by neopelex, to alkali, diluted acid and hard water chemistry
Property is stablized, and therefore, is more suitable for being used in constructing tunnel in concrete, which can be improved the freeze proof of concrete
Ability, impermeability, resistance to corrosion, extension engineering structure service life have good effect, are suitble to mass concrete
Construction, especially suitable for engineerings such as constructing tunnels.
Specific embodiment
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution: a kind of tunnel concrete water-reducing agent, water-reducing agent include in terms of mass fraction
Following components: 40-45 parts of water, 20-24 parts of common high performance water reducing agent of polyocarboxy acid mother liquor, 5-8 parts of viscosity modifier, flocculation aid
10-12 parts, 16-18 parts of β base naphthalene sulfonate formaldehyde condensation polymer, naphthalenesulfonateformaldehyde formaldehyde condensation 10-16 parts, neopelex
15-18 parts, 12-15 parts of isooctyltriethoxysilane, 18-20 parts of poly glycol monomethyl ether, 6-10 parts of suspending agent, early strength agent 7-
10 parts, 6-9 parts of defoaming agent and 8-11 parts of air entraining agent.
Further, water-reducing agent includes following components in terms of mass fraction: 41-44 parts of water, common poly-carboxylic high-performance subtract
21-23 parts of aqua mother liquor, 5-8 parts of viscosity modifier, 10-12 parts of flocculation aid, 16-17 parts of β base naphthalene sulfonate formaldehyde condensation polymer, naphthalene
Sulfonic acid and formaldehyde is condensed 11-15 parts, 16-18 parts of neopelex, 13-15 parts of isooctyltriethoxysilane, poly- second two
18-20 parts of alcohol monomethyl ether, 7-10 parts of suspending agent, 8-10 parts of early strength agent, 7-9 parts of defoaming agent and 9-11 parts of air entraining agent.
Further, common high performance water reducing agent of polyocarboxy acid mother liquor is lipid high-performance water reducing agent mother liquor, makes water-reducing agent more
The stabilization added.
Further, viscosity modifier is polyacrylamide emulsifier, is preferably emulsified to water-reducing agent.
Further, the formula of flocculation aid includes 5-6 parts of aluminum sulfate and 5-6 parts of zinc sulfate, preferably increases coagulation
The solidifiability of soil.
Further, early strength agent is technical grade triethanolamine, preferably shortens cement concrete setting time.
Further, air entraining agent is fatty alcohol-ether sodium sulfate, concrete flowability is improved, in mixing and stirring for concrete mix
Introduce a large amount of equally distributed closures in the process and stable micro-bubble.
Further, preparation method includes the following steps:
S1, common high performance water reducing agent of polyocarboxy acid mother liquor, β base naphthalene sulfonate formaldehyde condensation polymer, naphthalenesulfonateformaldehyde formaldehyde are condensed,
Neopelex, isooctyltriethoxysilane and poly glycol monomethyl ether are added in reaction kettle；
S2 is stirred the mixture in reaction kettle, and stirring while is gradually warmed up reaction kettle inside, until
It is uniformly mixed；
Reactor temperature is increased to 120 degree, stirred 2 hours, and reacted 10-12 hours to it by S3；
The temperature of mixture in reaction kettle is reduced to 50-60 degrees Celsius by S4, be added water, viscosity modifier, flocculation aid,
Suspending agent, early strength agent, defoaming agent and air entraining agent；
S5 keeps temperature-resistant in reaction kettle, at the uniform velocity stirs 2 hours, to will be anti-in a manner of vacuumizing in reaction kettle
Excessive moisture is extracted out during answering.
Embodiment one:
S1, by common high performance water reducing agent of polyocarboxy acid mother liquor extension set 20, β base naphthalene sulfonate formaldehyde condensation polymer, naphthalene sulfonic acids first
16 parts of aldehyde condensation, 15 parts of neopelex, 12 parts of isooctyltriethoxysilane and 18 parts of poly glycol monomethyl ether add
Enter into reaction kettle；
S2 is stirred the mixture in reaction kettle, and stirring while is gradually warmed up reaction kettle inside, until
It is uniformly mixed；
Reactor temperature is increased to 120 degree, stirred 2 hours, and reacted 10 hours to it by S3；
The temperature of mixture in reaction kettle is reduced to 50 degrees Celsius by S4, be added 40 parts of water, 5 parts of viscosity modifier, help it is solidifying
10 parts of agent, 6 parts of suspending agent, 7 parts of early strength agent, 6 parts of defoaming agent and 8 parts of air entraining agent；
S5 keeps temperature-resistant in reaction kettle, at the uniform velocity stirs 2 hours, to will be anti-in a manner of vacuumizing in reaction kettle
Excessive moisture is extracted out during answering.
Embodiment two:
S1, by 23 parts of common high performance water reducing agent of polyocarboxy acid mother liquor, 17 parts of β base naphthalene sulfonate formaldehyde condensation polymer, naphthalene sulfonic acids
14 parts of formaldehyde condensation, 16 parts of neopelex, 13 parts of isooctyltriethoxysilane and 19 parts of poly glycol monomethyl ether
It is added in reaction kettle；
S2 is stirred the mixture in reaction kettle, and stirring while is gradually warmed up reaction kettle inside, until
It is uniformly mixed；
Reactor temperature is increased to 120 degree, stirred 2 hours, and reacted 11 hours to it by S3；
The temperature of mixture in reaction kettle is reduced to 55 degrees Celsius by S4, be added 43 parts of water, 6 parts of viscosity modifier, help it is solidifying
11 parts of agent, 8 parts of suspending agent, 8 parts of early strength agent, 7 parts of defoaming agent and 9 parts of air entraining agent；
S5 keeps temperature-resistant in reaction kettle, at the uniform velocity stirs 2 hours, to will be anti-in a manner of vacuumizing in reaction kettle
Excessive moisture is extracted out during answering.
Embodiment three:
S1, by 24 parts of common high performance water reducing agent of polyocarboxy acid mother liquor, 18 parts of β base naphthalene sulfonate formaldehyde condensation polymer, naphthalene sulfonic acids
16 parts of formaldehyde condensation, 18 parts of neopelex, 15 parts of isooctyltriethoxysilane and 20 parts of poly glycol monomethyl ether
It is added in reaction kettle；
S2 is stirred the mixture in reaction kettle, and stirring while is gradually warmed up reaction kettle inside, until
It is uniformly mixed；
Reactor temperature is increased to 120 degree, stirred 2 hours, and reacted 12 hours to it by S3；
The temperature of mixture in reaction kettle is reduced to 60 degrees Celsius by S4, be added 45 parts of water, 8 parts of viscosity modifier, help it is solidifying
12 parts of agent, 10 parts of suspending agent, 10 parts of early strength agent, 9 parts of defoaming agent and 11 parts of air entraining agent；
S5 keeps temperature-resistant in reaction kettle, at the uniform velocity stirs 2 hours, to will be anti-in a manner of vacuumizing in reaction kettle
Excessive moisture is extracted out during answering.
Water-reducing agent performance comparison table:
| Water-reducing rate | Air content | Shrinking percentage | Initial slump | |
| Embodiment one | 27 | 1.2 | 84 | 25 |
| Embodiment two | 28 | 1 | 82 | 27 |
| Embodiment three | 30 | 0.9 | 82 | 28 |
| Ordinary water-reducing agent | 15 | 5 | 110 | 13 |
By the comparison of table, the water-reducing agent water-reducing rate that the present invention obtains is relatively stable, and degree of scatter is more stable, energy
Air content inside enough preferably reductions, enhances the intensity of concrete, the water-reducing agent that the present invention obtains improves coagulation when in use
Freezing tolerance, impermeability, resistance to corrosion and the extension engineering structure service life of soil have good effect, are suitble to tunnel
Concrete construction.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of tunnel concrete water-reducing agent, it is characterised in that: the water-reducing agent includes following components: water in terms of mass fraction
40-45 parts, 20-24 parts of common high performance water reducing agent of polyocarboxy acid mother liquor, 5-8 parts of viscosity modifier, 10-12 parts of flocculation aid, β base naphthalene
16-18 parts of sodium sulfonate formaldehyde condensation products, naphthalenesulfonateformaldehyde formaldehyde are condensed 10-16 parts, 15-18 parts of neopelex, iso-octyl
12-15 parts of triethoxysilane, 18-20 parts of poly glycol monomethyl ether, 6-10 parts of suspending agent, 7-10 parts of early strength agent, defoaming agent 6-9
Part and air entraining agent 8-11 parts.
2. a kind of tunnel concrete water-reducing agent according to claim 1, it is characterised in that: the water-reducing agent is with mass parts
Number meter include following components: 41-44 parts of water, 21-23 parts of common high performance water reducing agent of polyocarboxy acid mother liquor, 5-8 parts of viscosity modifier,
10-12 parts of flocculation aid, 16-17 parts of β base naphthalene sulfonate formaldehyde condensation polymer, naphthalenesulfonateformaldehyde formaldehyde are condensed 11-15 parts, detergent alkylate sulphur
Sour sodium 16-18 parts, it is 13-15 parts of isooctyltriethoxysilane, 18-20 parts of poly glycol monomethyl ether, 7-10 parts of suspending agent, early strong
8-10 parts of agent, 7-9 parts of defoaming agent and 9-11 parts of air entraining agent.
3. a kind of tunnel concrete water-reducing agent according to claim 1, it is characterised in that: the common high property of polycarboxylic acids
Energy water-reducing agent mother liquor is lipid high-performance water reducing agent mother liquor.
4. a kind of tunnel concrete water-reducing agent according to claim 1, it is characterised in that: the viscosity modifier is poly-
Acrylamide emulsifier.
5. a kind of tunnel concrete water-reducing agent according to claim 1, it is characterised in that: the formula packet of the flocculation aid
Include 5-6 parts of aluminum sulfate and 5-6 parts of zinc sulfate.
6. a kind of tunnel concrete water-reducing agent according to claim 1, it is characterised in that: the early strength agent is technical grade
Triethanolamine.
7. a kind of tunnel concrete water-reducing agent according to claim 1, it is characterised in that: the air entraining agent is fatty alcohol
Ether sodium sulfate.
8. a kind of tunnel concrete water-reducing agent according to claim 1, it is characterised in that: preparation method includes following step
It is rapid:
S1, by common high performance water reducing agent of polyocarboxy acid mother liquor, β base naphthalene sulfonate formaldehyde condensation polymer, naphthalenesulfonateformaldehyde formaldehyde condensation, 12
Sodium alkyl benzene sulfonate, isooctyltriethoxysilane and poly glycol monomethyl ether are added in reaction kettle；
S2 is stirred the mixture in reaction kettle, and stirring while is gradually warmed up reaction kettle inside, until stirring
It is uniformly mixed；
Reactor temperature is increased to 120 degree, stirred 2 hours, and reacted 10-12 hours to it by S3；
The temperature of mixture in reaction kettle is reduced to 50-60 degrees Celsius, water, viscosity modifier, flocculation aid, suspension is added by S4
Agent, early strength agent, defoaming agent and air entraining agent；
S5 keeps temperature-resistant in reaction kettle, at the uniform velocity stirs 2 hours, to will be reacted in a manner of vacuumizing in reaction kettle
Excessive moisture is extracted out in journey.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910638446.XA CN110436818A (en) | 2019-07-16 | 2019-07-16 | A kind of tunnel concrete water-reducing agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638446.XA CN110436818A (en) | 2019-07-16 | 2019-07-16 | A kind of tunnel concrete water-reducing agent |
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| CN110436818A true CN110436818A (en) | 2019-11-12 |
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| CN201910638446.XA Pending CN110436818A (en) | 2019-07-16 | 2019-07-16 | A kind of tunnel concrete water-reducing agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114031327A (en) * | 2021-12-10 | 2022-02-11 | 武安市浩泽环保科技有限公司 | High-activity stone powder-based concrete additive |
| CN116283029A (en) * | 2023-03-29 | 2023-06-23 | 广州砼奇杰建材科技有限公司 | Reinforcing auxiliary agent for organic terrazzo and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140221534A1 (en) * | 2013-02-07 | 2014-08-07 | Jesse Osborne, JR. | Tunneling annulus grout |
| CN108129056A (en) * | 2018-01-11 | 2018-06-08 | 贵州天威建材科技有限责任公司 | A kind of special water-reducing agent of railway tunnel construction gunite concrete |
| CN108585608A (en) * | 2018-04-27 | 2018-09-28 | 吉林农业科技学院 | A kind of cement water reducing agent and preparation method thereof |
-
2019
- 2019-07-16 CN CN201910638446.XA patent/CN110436818A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140221534A1 (en) * | 2013-02-07 | 2014-08-07 | Jesse Osborne, JR. | Tunneling annulus grout |
| CN108129056A (en) * | 2018-01-11 | 2018-06-08 | 贵州天威建材科技有限责任公司 | A kind of special water-reducing agent of railway tunnel construction gunite concrete |
| CN108585608A (en) * | 2018-04-27 | 2018-09-28 | 吉林农业科技学院 | A kind of cement water reducing agent and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114031327A (en) * | 2021-12-10 | 2022-02-11 | 武安市浩泽环保科技有限公司 | High-activity stone powder-based concrete additive |
| CN116283029A (en) * | 2023-03-29 | 2023-06-23 | 广州砼奇杰建材科技有限公司 | Reinforcing auxiliary agent for organic terrazzo and preparation method thereof |
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Application publication date: 20191112 |