CN104310843B - Clay-resistant concrete function additive and preparation method thereof - Google Patents
Clay-resistant concrete function additive and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a clay-resistant concrete function additive and a preparation method thereof and belongs to the field of concrete additives. The additive is prepared by mixing and grinding the following components in percentage by weight: 35-55% of lime, 15-25% of ferrous sulfate, 10-20% of sodium metasilicate, 5-15% of a polycarboxylate-type water reducer mother liquid and 0.1-5% of a cationic surface active agent. During use, the additive which is 1-1.5% of the use level of cementing materials is mixed with a gravel material with the clay content of about 10% in concrete, a part of water and the like firstly, and cementing materials such as cement coal ash, mineral powder and the like, a water reducer and residual water are further added to obtain high performance concrete, wherein the extended degree is over 600mm, the slump degree time is 5-10 seconds, the workability of concrete after 1 hour is still extremely good and the compressive strength within 28 days is qualified. According to the additive, the use level of cement is reduced by over 20%, so that the problem that the silt content in the polycarboxylate-type water reducer and the concrete material is great is solved. The additive has a wide application prospect.
Description
Technical field
The present invention relates to concrete admixture field, more particularly, to one kind are used for high clay stone powder for poly carboxylic acid series water reducer
Content machine-made sand concrete, the natural sand concrete of high clay content, the chips concrete of complicated component and regeneration concrete etc., make to mix
Anti-stick soil type concrete function additive of solidifying soil high performance and preparation method thereof.
Background technology
Clay minerals have an extreme influence to concrete performance, and clay minerals first easily absorb water generation volumetric expansion,
Concrete flowability or slump-loss is made to accelerate, concrete occurs that slurry amount is not enough, the problems such as seem very dry and astringent, to additive
Prescription high further, its result be water reducer consumption increase and control concrete slump loss require improve；Its
Secondary, identical concrete mix condition is issued to required ratio of mud during identical workability and increases, and holds after leading to concrete cast
Easily isolation, bleeding, sedimentation shrinkage cracking in maturing, and intensity is greatly lowered, simultaneously because xoncrete structure interface
Bonding is loose, and hydrophilic pore structure is more, and elastic modelling quantity diminishes, and wears no resistance, water, carbon dioxide and cl, so4 2-Deng harmful
Medium is easy to infiltration and invades, and causes that the long-term drying shrinkage of concrete is big, anti-carbonation, impermeability and anti-seawater corrosion ability, concrete
Overall endurance quality destroyed.Substantial amounts of clay minerals are had, main source includes cement, mineral blending in concrete
Stone powder in material, sandstone or soil etc., the clay mineral quantity in concrete is bigger, directly influences concrete batching system flowing
The mechanical property of property, job stability and maturing, volume stability and endurance quality are more serious.In a word, clay is led
The problem of cause concrete performance cracking is the difficult problem that must solve of current concrete high-performance.
For solving the problems, such as the impact to concrete performance for the concrete CLAY MINERALS AND THEIR SIGNIFICANCE, many Chinese patents disclosures are had to be mainly
By changing the molecular structure of polycarboxylate water-reducer so as to be unfavorable for by consumption of bentonite, patent cn102875051a,
Cn102643395a, cn10292389a, cn103693885a etc. all have the effect of certain anti-stick native anti-mud, it is possible to decrease coagulation
The soil or mortar sensitivity to high clay content sandstone raw material.In addition, also having some to be to make by compounding different types of auxiliary agent
It is sacrifice agent or the screener reduction consumption to polycarboxylate water-reducer for the bentonite, such as cn101798197a adopts natural zeolite conduct
Slow releasing agent adsorbs substantial amounts of polycarboxylate water-reducer and reduces the impact of clay, and is adsorbed onto releasing of the polycarboxylate water-reducer in zeolite
Putting speed and effect is cannot be guaranteed, and the initial dispersion performance of polycarboxylate water-reducer also cannot play simultaneously.Above-mentioned
Patent great majority too suppress clay-activity or are excessively used sacrifice agent in anti-stick soil by changing additive, actually to it
The activity of its cement based powder also has an impact, and the workability of concrete is resolved, but concrete strength reduces, final application
Effect is unsatisfactory.
Content of the invention
Based on the deficiency existing for above-mentioned prior art, the embodiment of the present invention provides one kind to can effectively solve the problem that polycarboxylic-acid
Water reducer is excessive with clay content in concrete material, realizes the anti-stick soil type concrete function additive of the high performance of concrete
And preparation method thereof.
For solving above-mentioned technical problem, embodiment of the present invention provides a kind of anti-stick soil type concrete function additive, should
Additive following each component mixed grinding by weight percentage forms, each group divide including:
Embodiment of the present invention also provides a kind of preparation method of above-mentioned anti-stick soil type concrete function additive, bag
Include:
Take each component forming described additive, described each component is made each component be sufficiently mixed in grinder, grind
Powder body or mastic is become to be this additive.
The invention has the benefit that the additive of the present invention makes full use of the characteristic of clay mineral, meet water using Calx
The characteristic of easily emulsifying afterwards, provides clay aquation in concrete to become hydroxide necessary to hydraulic calcium silicate Binder Materials
Calcium, it also plays fine powder filling effect together with the finely-powdered minerals such as clay, increases the density of concrete, to clay both generation
Reason effect also produces chemical action；Ferrous sulfate has more preferable water solublity than Gypsum Fibrosum, provides in the solution and promotes and oxidation
The sulfate radical of reactive aluminum and ferrous ion, generate similar entringite, the hydrated product of aquation calcium aluminoferrite；Biasing sodium metasilicate crystal
As sodium silicate gel absorption is wrapped in clay particle surface after water-soluble, the excessive adsorption of clay can be suppressed, simultaneously molten
, there is inducing action to exciting clay-activity in the gluey silicon dioxide also calcium hydroxide reaction easily with addition；Add poly- carboxylic
Sour based water reducer mother solution is easily reacted with Calx and is transformed into the slower polycarboxylic acids calcium salt water reducer of dissolution velocity, rises and preferably divides
The scattered guarantor effect of collapsing；Add cationic surfactant, clay particle surface can be preferentially adsorbed on selectivity, can preferably suppress
The imbibition of clay particle and the absorption to poly carboxylic acid series water reducer.The additive of the embodiment of the present invention is not suppression clay
Absorption and water absorption behavior, but by mixing other inorganic material simultaneously, dredge the sial using nanoclay granule
Hydrochlorate characteristic, the unfavorable factor of clay is converted into the active factor being conducive to concrete performance development, thus improve mixed comprehensively
The combination property of solidifying soil.
Specific embodiment
Below the embodiment it is clear that described is clearly and completely described to the technical scheme in the embodiment of the present invention
It is only a part of embodiment of the present invention, rather than whole embodiments.Based on embodiments of the invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of not making creative work, broadly falls into protection scope of the present invention.
The embodiment of the present invention provides a kind of anti-stick soil type concrete function additive, and this additive is by by weight percentage
Following each component mixed grinding form, each group divide including:
In above-mentioned additive, Calx is selected from: quick lime, Calx, lime paste；Ferrous sulfate include anhydrous slufuric acid ferrous, 7
At least one in aqueous ferrous sulfate, copperas solution；Sodium metasilicate is selected from: zero water sodium metasilicate, metasilicate pentahydrate sodium, nine
At least one in water sodium metasilicate, sodium silicate colloidal sol, waterglass etc.；Poly carboxylic acid series water reducer mother solution includes the poly- carboxylic of high water reducing type
In the mother solutions such as sour based water reducer mother solution, high collapse protection type poly carboxylic acid series water reducer mother solution, polycarboxylic-acid slump retaining agent mother solution at least one
Kind；Cationic surfactant is selected from: hexadecyltrimethylammonium chloride, lauryl ammonium chloride, octadecyl ammonium chloride, bromine
Change any one in ammonium.
The preparation method of above-mentioned anti-stick soil type concrete function additive, comprises the following steps:
By above-mentioned with measuring each component of additive；Each component is made each component fully mixed in the grinder of alloy material
Close, grind to form the powder body material that fineness is 50～100 mesh, this powder body material is anti-stick soil type concrete function additive.
The additive of the embodiment of the present invention passes through quick lime, ferrous sulfate, sodium metasilicate, poly carboxylic acid series water reducer mother solution
It is mixed in proportion and is milled into a kind of powder body or mastic Deng material, prepare and mix the high content stone powder Machine-made Sand of poly carboxylic acid series water reducer and mix
When solidifying native, the natural sand concrete of high clay content, chips concrete and regeneration concrete etc., by this additive with solid content meter
Calculate, mix the 1～1.5% of gel material content, after the sand material larger with clay amount in concrete and part water etc. stir in advance,
Add water the cementing materials such as mud flyash and breeze and water reducer and remaining water, it is possible to obtain more than concrete divergence 600mm,
The time of falling the slump is less than 5～10 seconds, 1 as a child workability of concrete still fabulous, the qualified high property of 28 days comprcssive strength
Energy concrete, comprcssive strength improves 5～10mpa within general 28 days, and this additive can use cement more than 20% less, and effectively solving is gathered
Carboxylic acid water reducing agent and clay content problems of too in concrete material, it is achieved that the high performance of concrete, are that one kind has extensively
The functional type additive of wealthy application prospect, has very high engineering application value.
The additive of the present invention makes full use of the characteristic of clay mineral, because clay is that granule is very little (generally less than
0.01 millimeter) plastic aluminosilicate, its composition is also mainly silicon oxide and aluminium oxide, has the lateral reactivity of similar cement.
The existing physical action of the impact to clay for the Calx also has chemical action, mixes levigate Calx, and it meets easily emulsifying after water, no
Clay aquation in concrete only can be provided to become calcium hydroxide necessary to hydraulic calcium silicate Binder Materials, the ore deposit such as itself and clay
Thing fine powder also plays fine powder filling effect together, increases the density of concrete.Ferrous sulfate has preferably water-soluble than Gypsum Fibrosum
Property, the sulfate radical with oxidation reactive aluminum and ferrous ion provided and promoted in the solution, similar entringite, aquation ferrum aluminic acid generated
The hydrated product of calcium；As sodium silicate gel absorption is wrapped in clay particle surface after biasing sodium metasilicate crystal is water-soluble, can press down
The excessive adsorption of clay processed, the silicon dioxide of the colloidal sol shape also calcium hydroxide reaction easily with addition, viscous to exciting simultaneously
There is inducing action in native activity；Adding poly carboxylic acid series water reducer mother solution easily to react with Calx, to be transformed into dissolution velocity slower
Polycarboxylic acids calcium salt water reducer, plays preferable dispersion guarantor's effect of collapsing；Add cationic surfactant (as cetyl trimethyl chlorine
Change ammonium, lauryl ammonium chloride, octadecyl ammonium chloride or ammonium bromide), clay particle surface can be preferentially adsorbed on selectivity,
Imbibition and the absorption to poly carboxylic acid series water reducer of clay particle can preferably be suppressed.The additive of the embodiment of the present invention is simultaneously
It is not to be forced through absorption and the water absorption behavior that this additive suppresses clay, but by mixing other inorganic materials simultaneously
Material, dredges the aluminosilicate characteristic using nanoclay granule, the unfavorable factor of clay is converted into and is conducive to concrete performance
The active factor of development, thus improve the combination property of concrete comprehensively.
With reference to specific embodiment, the additive of the present invention is further described.
Embodiment one
The present embodiment provides a kind of anti-stick soil type concrete function additive, and it is following each that this additive includes by weight
Component: 2kg caustic lime block, 1kg anhydrous slufuric acid ferrous iron, 0.75kg anhydrous sodium metasilicate, 0.5kg mass concentration are 40% water reducing type
Btc-100 poly carboxylic acid series water reducer and the hexadecyltrimethylammonium chloride of 0.1kg；
Its preparation method is: with 50 cubic centimetres of ball mill, by 2kg caustic lime block, 1kg anhydrous slufuric acid ferrous iron, 0.75kg
Anhydrous sodium metasilicate, 0.5kg mass concentration are the cetyl of 40% water reducing type btc-100 poly carboxylic acid series water reducer and 0.1kg
Trimethyl ammonium chloride sequentially adds in mill, and grinding was all poured out after 5 minutes, obtains the anti-stick soil type concrete function of the present embodiment
Additive.Test for subsequent contrast and use, this functional type additive is named as btc-750.
Embodiment two
The present embodiment provides a kind of anti-stick soil type concrete function additive, and it is following each that this additive includes by weight
Component: 2kg caustic lime block, 1kg ferrous sulfate heptahydrate, 0.75kg metasilicate pentahydrate sodium, 0.5kg mass concentration are that 50% guarantor is collapsed
Water reducing type btc-200 poly carboxylic acid series water reducer and the hexadecyltrimethylammonium chloride of 0.1kg；
Its preparation method is: with 50 cubic centimetres of ball mill, by 2kg caustic lime block, 1kg ferrous sulfate heptahydrate, 0.75kg
Metasilicate pentahydrate sodium, mass concentration are that 50% guarantor is collapsed the hexadecane of water reducing type btc-200 poly carboxylic acid series water reducer and 0.1kg
Base trimethyl ammonium chloride sequentially adds in mill, and grinding was all poured out after 5 minutes, obtains the anti-stick soil type concrete work(of the present embodiment
Can additive.Test for subsequent contrast and use, this functional type additive is named as btc-751.
Embodiment three
The present embodiment provides a kind of anti-stick soil type concrete function additive, and it is following each that this additive includes by weight
Component: 2kg hydrated lime in powder, 1kg ferrous sulfate heptahydrate, 0.75kg non-hydrate sodium metasilicate, 0.5kg mass concentration are 50%
Btc-500 polycarboxylic-acid slump retaining agent and the Dodecyl trimethyl ammonium chloride of 0.1kg；
Its preparation method is: with 50 cubic centimetres of ball mill, by 2kg hydrated lime in powder, 1kg ferrous sulfate heptahydrate, 0.75kg
Non-hydrate sodium metasilicate, mass concentration are 50% btc-500 polycarboxylic-acid slump retaining agent and the trimethyl chlorine of 0.1kg
Change ammonium and sequentially add in mill, grinding was all poured out after 5 minutes, obtained the anti-stick soil type concrete function additive of the present embodiment.
Test for subsequent contrast and use, this functional type additive is named as btc-752.
Example IV
The present embodiment provides a kind of preparation method of anti-stick soil type concrete function additive, and this additive is included by weight
Meter following each component: 10kg mass concentration be 60% lime paste, 10kg mass concentration be 25% ferrous sulfate, 2.5kg matter
Amount concentration is 30% Ludox, 0.5kg mass concentration is 50% btc-500 polycarboxylic-acid slump retaining agent and the dodecane of 0.1kg
Base trimethyl ammonium chloride；
Its preparation method is: with 50 liter stirring containers, by 10kg mass concentration be 60% lime paste, 10kg mass dense
Spend for 25% ferrous sulfate, 2.5kg mass concentration be 30% Ludox, 0.5kg mass concentration be 50% the poly- carboxylic of btc-500
Acid is that the Dodecyl trimethyl ammonium chloride of slump retaining agent and 0.1kg sequentially adds, and stirs 5 minutes, obtains the present embodiment paste
Anti-stick soil type concrete function additive.Test for subsequent contrast and use, this functional type additive is named as btc-753.
In the performance comparison experiment of the anti-stick soil type concrete function additive of preparation in the embodiment of the present invention, anti-stick soil type
Concrete function additive, the sample such as btc-750, btc-751, btc-752, btc-753 preparing including the various embodiments described above
All measure by solid active component and use, volume is the 1.0～1.5% of binder total amount, typically larger with argillaceous quantity
Sandstone, aggregate chips, regeneration fine powder, part water be equal to mix, and preferentially stir more than 1 minute；Pumping admixture is that 10% concentration is compound poly-
Carboxylic acid water reducing agent btc200, Binder Materials be Jinyu p.o.42.5 cement, ii level flyash, s95 breeze, below this is made into
One step is specifically described.
Implementation result is as follows:
(1) it is used for high clay content machine-made sand concrete:
Actual measurement Machine-made Sand clay content 15.0%, stone is 5～20mm rubble, water reducer btc-200 volume 2.2%, this
The functional type additive btc-750 volume 1.2% of bright embodiment, contrast is mixed with the c30 concrete match ratio not mixing btc-750 such as
Table 1-1, corresponding concrete performance the results are shown in Table 1-2.It can be seen that, generally, functional type additive btc-750 do not mixed by concrete
Shi Jiben does not have mobility, a forming process almost disk loose sand, and intensity is very low, and mixes concrete indices after btc-750
Reach the requirement of high performance concrete.
Table 1-1 high clay content Machine-made Sand c30 concrete mix (kg)
| Numbering | Cement | Flyash | Breeze | Sand | Stone | Water | btc-750 | btc-200 |
| 1 | 175 | 74 | 93 | 880 | 1023 | 175 | 0 | 7.52 |
| 2 | 175 | 74 | 93 | 880 | 1023 | 175 | 4.1 | 7.52 |
Table 1-2 high clay content Machine-made Sand c30 concrete performance
(2) prepare chips concrete:
The aggregate chips that experiment uses is stone factory's original state aggregate chips, its content of stone powder 18.5%, 0.1～5.0mm sand content
41.5%, 5～10mm Semen Benincasae piece content 35%.Mix the chips concrete cooperation such as table 2- of the btc-752 of the embodiment of the present invention
1, corresponding concrete performance test the results are shown in Table 2-2.It can be seen that, contain a large amount of lamellar aggregates in aggregate chips, the isolation easily causing is secreted
Slurry problem, concrete cohesiveness is not enough, poor fluidity, and after mixing btc-750, concrete cement consumption is relatively low, and is fully achieved
The normal index scope of high performance concrete.
Table 2-1 aggregate chips high-performance concrete mix (kg)
Table 2-2 aggregate chips high performance concrete performance
(3) it is used for composite regenerated fine powder concrete:
Regeneration concrete fine powder is to screen out regeneration aggregate residue, equivalent substitution part of cement and sand, mixes and does not mix
The c30 concrete match ratio of btc-753 functional type additive such as table 3-1, corresponding concrete performance the results are shown in Table 3-2.It can be seen that, right
In mixing and not mixing regeneration fine powder concrete, the functional type additive btc-753 of the embodiment of the present invention has to the performance of concrete
Extraordinary Stabilization, concrete indices reach the requirement of high performance concrete.
Table 3-1 composite regenerated fine powder concrete mix (kg)
Table 3-2 composite regenerated fine powder concrete performance
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change or replacement that can readily occur in,
All should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (6)
1. a kind of anti-stick soil type concrete function additive is it is characterised in that this additive is following with by weight percentage
Each component mixed grinding forms, and each group is divided into:
Described poly carboxylic acid series water reducer mother solution is selected from: high water reducing type poly carboxylic acid series water reducer mother solution, high collapse protection type polycarboxylic-acid subtract
At least one in water preparation mother solution, polycarboxylic-acid slump retaining agent mother solution；
Described cationic surfactant is selected from: hexadecyltrimethylammonium chloride, lauryl ammonium chloride, octadecyl chlorination
Any one in ammonium.
2. as claimed in claim 1 anti-stick soil type concrete function additive it is characterised in that
Described Calx is selected from: at least one in quick lime, Calx, lime paste.
3. as claimed in claim 1 anti-stick soil type concrete function additive it is characterised in that
Described ferrous sulfate is selected from: at least one in anhydrous slufuric acid ferrous iron, ferrous sulfate heptahydrate, copperas solution.
4. as claimed in claim 1 anti-stick soil type concrete function additive it is characterised in that
Described sodium metasilicate is selected from: at least one in zero water sodium metasilicate, metasilicate pentahydrate sodium, non-hydrate sodium metasilicate.
5. the preparation method of the anti-stick soil type concrete function additive described in a kind of any one of Claims 1-4, its feature exists
In, comprising:
Take each component forming described additive, described each component is made each component be sufficiently mixed in grinder, pulverizes
Body or mastic are this additive.
6. as claimed in claim 5 the preparation method of anti-stick soil type concrete function additive it is characterised in that described grinding
The fineness becoming powder body is 50～100 mesh.
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| CN105503063A (en) * | 2015-12-30 | 2016-04-20 | 卓达新材料科技集团威海股份有限公司 | Anti-crack agent used for Portland cement fiberboards |
| CN105439493A (en) * | 2015-12-30 | 2016-03-30 | 卓达新材料科技集团威海股份有限公司 | Anti-cracking agent used for ordinary cement-fiber board |
| CN106517866B (en) * | 2016-11-14 | 2019-03-22 | 安徽瑞和新材料有限公司 | A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer |
| CN111423151B (en) * | 2020-03-03 | 2022-04-12 | 深圳市三绿科技有限公司 | Concrete cementing material regulator and preparation method thereof |
| CN111423149B (en) * | 2020-03-03 | 2021-09-14 | 深圳市三绿科技有限公司 | Concrete aggregate regulator and preparation process thereof |
| CN111423154B (en) * | 2020-03-03 | 2021-10-15 | 深圳市三绿科技有限公司 | Concrete glue reducing agent and preparation method thereof |
| CN111548073B (en) * | 2020-06-04 | 2022-06-07 | 广州市建筑科学研究院有限公司 | Anti-shrinkage prefabricated part concrete and preparation method and application thereof |
| CN112592138B (en) * | 2020-12-31 | 2022-07-12 | 中铁十局集团有限公司 | Single-component active synchronous mortar with controllable setting time and preparation method thereof |
| CN116750988A (en) * | 2023-08-11 | 2023-09-15 | 天津市扬天环保科技有限公司 | Slow-release type polycarboxylic acid concrete water reducer with good fluidity and preparation method thereof |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Anti-clay type concrete functional admixture and preparation method thereof Effective date of registration: 20220801 Granted publication date: 20170118 Pledgee: Nanning Branch of Guilin Bank Co.,Ltd. Pledgor: Guangxi Baotian environmental protection materials Co.,Ltd. Registration number: Y2022450000123 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230809 Granted publication date: 20170118 Pledgee: Nanning Branch of Guilin Bank Co.,Ltd. Pledgor: Guangxi Baotian environmental protection materials Co.,Ltd. Registration number: Y2022450000123 |