CN108395134A - High efficiency water reducing agent composition and its application method for alkali slag cement - Google Patents
High efficiency water reducing agent composition and its application method for alkali slag cement Download PDFInfo
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- CN108395134A CN108395134A CN201810271977.5A CN201810271977A CN108395134A CN 108395134 A CN108395134 A CN 108395134A CN 201810271977 A CN201810271977 A CN 201810271977A CN 108395134 A CN108395134 A CN 108395134A
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- Prior art keywords
- reducing agent
- slag cement
- high efficiency
- water reducing
- alkali
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/08—Slag cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to the high efficiency water reducing agent compositions and its application method for alkali slag cement,Belong to engineering material technical field,The high efficiency water reducing agent composition is made of boracic ring silicate mineral and naphthalene sulfonic acid-formaldehyde condensation product,Wherein,Boron ring silicate mineral is high negative charge density mineral,Consistent electric field can be generated in alkali slag cement system,Its surface can load high density negative electricity,It is acted on by electrostatic repulsion between mineral grain by achievees the purpose that dispersion,Naphthalene sulfonic acid-formaldehyde condensation product in the water-reducing agent composition simultaneously,The surface energy of system liquid phase can not only be reduced,It can also be adsorbed on the mineral surfaces by the diffusion layer of boracic ring silicate mineral surface electric double layer,Further increase the electrostatic repulsion and steric hindrance between each mineral grain,And then achieve the effect that be released from by liquid phase,Effectively reduce the yield stress of alkali slag cement system,Make its diminishing efficiency up to 10 15%.
Description
Technical field
The invention belongs to engineering material technical fields, and in particular to for alkali slag cement high efficiency water reducing agent composition and
Its application method.
Background technology
Alkali slag cement is a kind of Green High Performance cementitious material, since the invention, with its excellent physical and mechanical property,
Chemical species corrosive power and excellent durability have obtained the multinational extensive concern in the world.It, which is developed and used, meets China's section
It can emission reduction development strategy.The exciting agent of alkali slag cement includes waterglass, sodium hydroxide, sodium carbonate, sodium sulphate etc., wherein with water
The alkali slag cement concrete quality of glass excitation is stablized the most, but the alkali slag cement slurry viscosity of waterglass excitation is big, leads
Cause conventional water reducing agents fail in the system or functioning efficiency is extremely low.Therefore, the plastifying technology for developing alkali slag cement is effective
The important channel to solve the above problems.
Invention content
In view of this, the purpose of the present invention is to provide a kind of high efficiency water reducing agent compositions for alkali slag cement；Mesh
Two be to provide a kind of application method containing the high efficiency water reducing agent composition.
In order to achieve the above objectives, the present invention provides the following technical solutions：
1, a kind of high efficiency water reducing agent composition for alkali slag cement, the composition is by boracic ring silicate mineral
It is formed with naphthalene sulfonic acid-formaldehyde condensation product.
Further, the mesh of the grain size of the boracic ring silicate mineral >=400, density 2.9-3.15g/cm3。
Further, the naphthalene sulfonic acid-formaldehyde condensation product is sodiumβ-naphthalenesulfonate formaldehyde condensation products.
Further, when the sodiumβ-naphthalenesulfonate formaldehyde condensation products are powdered, grain size ＜ 0.075mm；The beta-naphthalenesulfonic-acid
When sodium formaldehyde condensation product is liquid, sodium sulphate content≤1.50wt%.
2, the application method of the high efficiency water reducing agent composition, the method are：In parts by mass, per 80-90 parts high
10-20 parts of boracic ring silicate minerals, 1-3 parts of naphthalene sulfonic acid-formaldehyde condensation products and 8-15 parts of alkali-activated carbonatites are added in stove slag powders
Agent.
Further, the specific surface area of the ground granulated blast furnace slag is 350m2/ kg, density 2.72g/cm3, basicity factor is
1.03, vivacity 0.43.
Further, by mass percentage, the ground granulated blast furnace slag includes following component, SiO2：32.70%, Al2O3：
14.03%, TiO2：2.13%, CaO：39.00%, MgO：8.99%, MnO：0.40%, K2O：0.41%, Na2O：0.25%,
Loss on ignition 0.78%, it is other：1.31%.
Further, the alkali-activator is one kind in waterglass, sodium hydroxide, sodium carbonate or sodium sulphate.
Further, the waterglass contains 29.03wt%SiO2And 12.07wt%Na2O, density 1.48g/cm3, Baume
Degree is 46, modulus 2.41.
The beneficial effects of the present invention are：The present invention provides for alkali slag cement high efficiency water reducing agent composition and its
Application method, boracic ring silicate mineral is high negative charge density mineral in the water-reducing agent composition, in alkali slag cement body
Consistent electric field can be generated in system, surface can load high density negative electricity, act on and reach by electrostatic repulsion between mineral grain
To the purpose of dispersion, while naphthalene sulfonic acid-formaldehyde condensation product in the water-reducing agent composition, it can not only reduce the surface of system liquid phase
It can, moreover it is possible to the mineral surfaces is adsorbed on by the diffusion layer of boracic ring silicate mineral surface electric double layer, further increased each
Electrostatic repulsion between mineral grain and steric hindrance, and then achieve the effect that be released from by liquid phase, effectively reduce alkali slag cement system
Yield stress, make its diminishing efficiency up to 10-15%.
Specific implementation mode
The preferred embodiment of the present invention will be described in detail below.
Embodiment 1
Prepare alkali slag cement slurry
It is 400 mesh, density 3.05g/cm by 80 parts of water quenching granulating ground granulated blast furnace slags, 20 parts of grain sizes3Boron cyclic silicate
Salt mineral and the powdered sodiumβ-naphthalenesulfonate formaldehyde condensation products that 2 parts of grain size is 0.07mm pour into blender stir after mixing
10s is mixed, then 12.5 parts of waterglass and 30 parts of water are adjusted to sodium hydroxide after modulus is 1.2 after mixing and pour into stirring
In machine, continue to stir 240s, you can.
Embodiment 2
Prepare alkali slag cement slurry
It is 400 mesh, density 3.05g/cm by 85 parts of water quenching granulating ground granulated blast furnace slags and 10 parts of grain sizes3Boron cyclic silicate
Salt mineral pour into after mixing stirs 10s in blender, with sodium hydroxide tune after then mixing 8 parts of waterglass with 30 parts of water
Section adds liquid beta-naphthalenesulfonic acid-formaldehyde condensate that 1 part of sodium sulphate content is 0.8wt% after being 1.2 to modulus, mixing is equal
It is poured into blender after even, continues to stir 240s, you can.
Embodiment 3
Prepare alkali-slag concrete
It is 450 mesh, density 3.15g/cm by 90 parts of water quenching granulating ground granulated blast furnace slags and 15 parts of grain sizes3Boron cyclic silicate
Salt mineral pour into after mixing stirs 10s in blender, with sodium hydroxide after then mixing 15 parts of waterglass with 45 parts of water
It is adjusted to the liquid beta-naphthalenesulfonic acid-formaldehyde condensate for adding that 3 parts of sodium sulphate contents are 0.8wt% after modulus is 1.2, is mixed
It is poured into blender after uniformly, stirs 20s, sand and 270 parts of stones in 180 parts are added, continue to stir 240s, you can.
In embodiment 1-3, the specific surface area of water quenching granulating ground granulated blast furnace slag used is 350m2/ kg, density 2.72g/
cm3, basicity factor 1.03, vivacity 0.43, by mass percentage, including following component, SiO2：32.70%,
Al2O3：14.03%, TiO2：2.13%, CaO：39.00%, MgO：8.99%, MnO：0.40%, K2O：0.41%, Na2O：
0.25%, loss on ignition 0.78%；, other：1.31%；Waterglass contains 29.03wt%SiO2And 12.07wt%Na2O, density are
1.48g/cm3, Baume degrees 46, modulus 2.41.
Comparative example
Benchmark group alkali slag cement slurry
100 parts of water quenching granulating ground granulated blast furnace slags are poured into and stir 10s in blender, then by 12.5 parts of waterglass and 30 parts
Water is adjusted to after modulus is 1.2 with sodium hydroxide pours into blender after mixing, continues to stir 240s, you can.
Benchmark group alkali-slag concrete
10s will be stirred in 100 parts of water quenching granulating ground granulated blast furnace slag blenders, then mixes 15 parts of waterglass with 45 parts of water
Afterwards with sodium hydroxide be adjusted to modulus be 1.2 after pour into blender after mixing, stir 20s, be added 160 parts in sand and
240 parts of stones continue to stir 240s, you can.
With reference to GB/T50119-2013《Technical code for application of admixture in concrete》Measure embodiment 1, embodiment 2 and comparison
The alkali slag cement net slurry body divergence prepared in embodiment；With reference to GB/T50086-2008《Concrete admixture》It measures and implements
The alkali slag cement net slurry water-reducing rate prepared in example 1, embodiment 2 and comparative example；With reference to GB/T50080-2016《It is common mixed
Solidifying soil mixture method for testing performance standard》Measure the alkali-slag concrete divergence prepared in embodiment 3 and comparative example.
The alkali slag cement mini-slump extension prepared in comparative example is 110mm, and yield stress is about 102Pa, is implemented
The alkali slag cement mini-slump extension prepared in example 1 is 205mm, and yield stress is about 50Pa, and water-reducing rate 10.50% is implemented
The alkali slag cement mini-slump extension prepared in example 2 is 210mm, and yield stress is about 45Pa, water-reducing rate 13.00%；Comparison
The alkali-slag concrete divergence prepared in embodiment is 380mm, and the alkali-slag concrete divergence prepared in embodiment 3 is
500mm.Therefore, the fluidity that alkali slag cement can be improved using the high efficiency water reducing agent composition in the present invention, reaches plasticizing
Effect, promote alkali slag cement slurry divergence about 90%, reduce yield stress about 55%, realize water-reducing rate about 13.36%,
Alkali-slag concrete divergence about 32% is promoted, mixture viscosity and fluidity are significantly improved.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (9)
1. a kind of high efficiency water reducing agent composition for alkali slag cement, which is characterized in that the composition is by boracic ring-type silicon
Hydrochlorate mineral and naphthalene sulfonic acid-formaldehyde condensation product composition.
2. a kind of high efficiency water reducing agent composition for alkali slag cement as described in claim 1, which is characterized in that described to contain
The mesh of the grain size of boron ring silicate mineral >=400, density 2.9-3.15g/cm3。
3. a kind of high efficiency water reducing agent composition for alkali slag cement as claimed in claim 1 or 2, which is characterized in that institute
It is sodiumβ-naphthalenesulfonate formaldehyde condensation products to state naphthalene sulfonic acid-formaldehyde condensation product.
4. a kind of high efficiency water reducing agent composition for alkali slag cement as claimed in claim 3, which is characterized in that the β-
When naphthalenesulfonic acid-formaldehyde condensate is powdered, grain size ＜ 0.075mm；When the sodiumβ-naphthalenesulfonate formaldehyde condensation products are liquid,
Sodium sulphate content≤1.50wt%.
5. the application method of claim 1-4 any one of them high efficiency water reducing agent compositions, which is characterized in that the method
For：In parts by mass, 10-20 parts of boracic ring silicate minerals, 1-3 parts of naphthalene sulfonic acids are added in every 80-90 parts of ground granulated blast furnace slags
Formaldehyde condensation products and 8-15 parts of alkali-activators.
6. application method as claimed in claim 5, which is characterized in that the specific surface area of the ground granulated blast furnace slag is 350m2/ kg,
Density is 2.72g/cm3, basicity factor 1.03, vivacity 0.43.
7. application method as claimed in claim 6, which is characterized in that by mass percentage, the ground granulated blast furnace slag includes
Following component, SiO2：32.70%, Al2O3：14.03%, TiO2：2.13%, CaO：39.00%, MgO：8.99%, MnO：
0.40%, K2O：0.41%, Na2O：0.25%, loss on ignition 0.78% is other：1.31%.
8. application method as claimed in claim 5, which is characterized in that the alkali-activator is waterglass, sodium hydroxide, carbonic acid
One kind in sodium or sodium sulphate.
9. application method as claimed in claim 8, which is characterized in that the waterglass contains 29.03wt%SiO2With
12.07wt%Na2O, density 1.48g/cm3, Baume degrees 46, modulus 2.41.
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| CN201810271977.5A CN108395134B (en) | 2018-03-29 | 2018-03-29 | High-efficiency water reducing agent composition for alkali slag cement and use method thereof |
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| CN201810271977.5A CN108395134B (en) | 2018-03-29 | 2018-03-29 | High-efficiency water reducing agent composition for alkali slag cement and use method thereof |
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| CN108395134A true CN108395134A (en) | 2018-08-14 |
| CN108395134B CN108395134B (en) | 2020-11-06 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6296699B1 (en) * | 1999-01-27 | 2001-10-02 | Weihua Jin | Inorganic binders employing waste glass |
| CN101723607A (en) * | 2009-12-08 | 2010-06-09 | 南京工业大学 | Alkali-slag cement component and preparation process thereof |
| CN104150803A (en) * | 2014-08-26 | 2014-11-19 | 重庆大学 | Alkali slag concrete water reducing agent |
| CN104710157A (en) * | 2015-03-04 | 2015-06-17 | 安徽建筑大学 | Rail shield muck colored functional ceramsite and preparation method thereof |
-
2018
- 2018-03-29 CN CN201810271977.5A patent/CN108395134B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6296699B1 (en) * | 1999-01-27 | 2001-10-02 | Weihua Jin | Inorganic binders employing waste glass |
| CN101723607A (en) * | 2009-12-08 | 2010-06-09 | 南京工业大学 | Alkali-slag cement component and preparation process thereof |
| CN104150803A (en) * | 2014-08-26 | 2014-11-19 | 重庆大学 | Alkali slag concrete water reducing agent |
| CN104710157A (en) * | 2015-03-04 | 2015-06-17 | 安徽建筑大学 | Rail shield muck colored functional ceramsite and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张晓晖等: ""电气石粉体的表面电性研究"", 《中国矿业》 * |
| 杨长辉等: "表面活性剂在碱矿渣水泥系统中的吸附特征研究", 《混凝土》 * |
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