CN106517866B - A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer - Google Patents
A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer Download PDFInfo
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- CN106517866B CN106517866B CN201610998610.4A CN201610998610A CN106517866B CN 106517866 B CN106517866 B CN 106517866B CN 201610998610 A CN201610998610 A CN 201610998610A CN 106517866 B CN106517866 B CN 106517866B
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- carboxylic acid
- acid series
- clay
- poly carboxylic
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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
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
Abstract
The present invention provides a kind of with the clay inhibitor for improving the anti-mud performance of poly carboxylic acid series water reducer, which includes that the mass ratio of component A and component B, wherein component A and component B are 1.5 ~ 3.0:1；Component A is skillful lime；Component B is made of the raw material of following mass percent: molecular weight polymers 5 ~ 25%, organic cationic polymer 5 ~ 25%, macromolecule polyalcohol 0.02 ~ 0.1%, water 55 ~ 85%.The present invention also provides the application methods of above-mentioned clay inhibitor.The inhibitor can carry out synergistic effect of the pretreatment modification effect with component B to the shielding action of adsorption by clay water-reducing agent to the clay in cement-based material by component A, suction-operated of the clay to poly carboxylic acid series water reducer is effectively reduced, i.e. the synergistic effect effectively inhibits influence of the clay to poly carboxylic acid series water reducer negative effect, significantly improves the working performance of cement-based material.
Description
Technical field
The invention belongs to functional form additive preparation technical fields, and in particular to have improvement polycarboxylic-acid diminishing to a kind of
The clay inhibitor and its application method of the anti-mud performance of agent.
Background technique
With the fast development of modern concrete technology and continuing to bring out for Important Project, the work of poly carboxylic acid series water reducer
Journey application percentage is increasing, currently, its application alreadys exceed naphthalene series high-efficiency water-reducing agent, it is high to become concrete especially high-performance
Indispensable component in reinforced concrete has wide development and application prospect.But with infrastructure project amount in recent years
Huge, the exploitation of sandstone aggregate is very severe, causes quality sand and stone aggregate more and more in short supply, and aggregate degradation trend is increasingly apparent.
For concrete, the clay in sandstone aggregate is a kind of very harmful component, it affects the working performance of concrete, power
Performance and endurance quality are learned, while even more affecting the application performance of water-reducing agent, and to the shadow of poly carboxylic acid series water reducer performance
Loud then particularly evident, this will greatly restrict its further genralrlization and application, be unfavorable for the further development of Concrete Industry.
Currently, it is very more for the research for how improving the anti-mud performance of poly carboxylic acid series water reducer, there is scholar from polycarboxylic-acid
The molecular structure of water-reducing agent itself designs anti-mud function up, but its anti-mud effect is very limited, and tracing it to its cause is water-reducing agent knot
Change on structure acts on the strong adsorption of poly carboxylic acid series water reducer without substantially solving clay.Equally there is research to take compound
The mode of the cationic surfactants such as quaternary ammonium salt inhibits absorption of the clay to poly carboxylic acid series water reducer, though it is effective unknown
Aobvious, main cause is that it inhibits clay more single to the suction type of poly carboxylic acid series water reducer, while failing fundamentally to solve
Certainly absorption of the clay to poly carboxylic acid series water reducer.Therefore, it is necessary to be gone out according to essence such as the design feature of clay and absorption mechanisms
Hair carries out the repercussion study of clay and poly carboxylic acid series water reducer, and poly carboxylic acid series water reducer can be significantly improved by developing one kind
The functional form additive and its application method of anti-mud performance, thus the cement base of the especially high system containing mud containing poor aggregate of adaptation
Material, to reach the application field for widening poly carboxylic acid series water reducer.
Summary of the invention
The purpose of the present invention is regarding to the issue above and the deficiencies in the prior art provide it is a kind of have improve polycarboxylic acids
The technical issues of clay inhibitor and its application method of the anti-mud performance of based water reducer, solution, is: for the cement of high clay content
Poly carboxylic acid series water reducer can be improved to the dispersibility and dispersion holding performance of cement-based material, simultaneously in sill according to the present invention
To cement-based material, other performances have no adverse effect.
What the present invention adopts the following technical solutions to realize, it is a kind of with improving poly carboxylic acid series water reducer anti-mud performance
Clay inhibitor, it is characterised in that: including component A, component B, wherein the mass ratio of component A and component B is 1.5 ~ 3.0:1.
(1) component A is white lime.
(2) component B is made of the raw material of following mass percent:
Molecular weight polymers 5 ~ 25%
Organic cationic polymer 5 ~ 25%
Macromolecule polyalcohol 0.02 ~ 0.1%
Water 55 ~ 85%.
It is above-mentioned that there is the clay inhibitor for improving the anti-mud performance of poly carboxylic acid series water reducer, it is further characterized by: component B
Described in molecular weight polymers be mixture any one or more than one in PEG4000, PEG6000, PEG8000.
It is above-mentioned that there is the clay inhibitor for improving the anti-mud performance of poly carboxylic acid series water reducer, it is further characterized by: component B
Described in organic cationic polymer be dodecyl benzyl dimethyl ammonium chloride, it is any in cetyl trimethylammonium bromide
One or more kinds of mixtures.
It is above-mentioned that there is the clay inhibitor for improving the anti-mud performance of poly carboxylic acid series water reducer, it is further characterized by: component B
Described in macromolecule polyalcohol be cationic-type polyacrylamide, and molecular weight be 16,000,000 ~ 20,000,000.
The invention also discloses a kind of users with the clay inhibitor for improving the anti-mud performance of poly carboxylic acid series water reducer
Method, which comprises the following steps:
(1) described had into the clay inhibitor component A for improving the anti-mud performance of poly carboxylic acid series water reducer, cement base first
The preparatory mix of all components in material in addition to water-reducing agent 30 seconds ~ 90 seconds；
(2) then described having is improved to the clay inhibitor component B and poly- carboxylic of the anti-mud performance of poly carboxylic acid series water reducer
Mix 60 seconds ~ 180 seconds again are added in described step (1) the cement-based material mixture in sour based water reducer simultaneously.
The utility model has the advantages that compared with prior art, the present invention having the advantage that
The present invention according to clay design feature and its set out to poly carboxylic acid series water reducer absorption mechanism, from absorption source open
Begin to solve clay to the absorption problem of poly carboxylic acid series water reducer, using the hydrated product of white lime and cement to cement matrix
Clay in material is modified pretreatment, so that modified clay obtains the adsorbance of poly carboxylic acid series water reducer with adsorption rate
It is reduced to apparent.
The characteristics of belonging to anionic high molecular polymer in view of poly carboxylic acid series water reducer, the present invention are special with regard to the absorption of clay
Point uses a variety of adsorbing mediums such as molecular weight polymers, organic cationic polymer and cationic macromolecules polymer,
These media are respectively with strong quilts of a variety of suction types such as intercalation absorption, the absorption of strong surface physics and irreversible chemisorptions
It is adsorbed on clay particle surface and interlayer, clay is to the absorption of above-mentioned medium prior to the absorption to poly carboxylic acid series water reducer.
This strong precedence suction type not only greatly reduces absorption of the clay to poly carboxylic acid series water reducer, but also releases a large amount of viscous
Native intermediary water.
The present invention has the effect of thickening using cationic macromolecules polymer poly acrylamide to cement-based material system
Answer, therefore after adding the cationic-type polyacrylamide, system viscosity increases, according to Stokes-Einstein equation it is found that with
The increase of system viscosity, diffusion rate decline of the solute in liquid-phase system, while system liquid phase layer bound thickness is also therewith
Increase.The variation of the two causes diffusion velocity of the poly carboxylic acid series water reducer molecule in cement-based material liquid-phase system to drop significantly
It is low, to effectively reduce poly carboxylic acid series water reducer molecule by the speed of adsorption by clay, be conducive to improve polycarboxylic-acid diminishing
The dispersion holding performance of agent.
The indirect utilization of the present invention adding mode of component B and poly carboxylic acid series water reducer latter admixing method, effectively reduces viscous
Soil and cement to the adsorption rate and adsorbance of poly carboxylic acid series water reducer, be remarkably improved poly carboxylic acid series water reducer dispersibility and
Dispersion holding performance.
To sum up, the present invention utilizes the synergistic effect of above-mentioned a variety of effects, effectively raises poly- carboxylic in system containing mud
The dispersibility and dispersion holding performance of sour based water reducer.
Specific embodiment
Content in order to further illustrate the present invention does further technical solution of the present invention by following specific embodiments
Explanation.The present invention is by test flowing degree of net paste of cement and loss and concrete slump and loss come to prepared product
It is evaluated.
Embodiment 1
A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer
Component A: white lime；
The weight percent of each constituent of component B are as follows: PEG4000 5%, dodecyl benzyl dimethyl ammonium chloride 15%,
Cationic-type polyacrylamide 0.06%, water 79.94%.
Embodiment 2
A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer
Component A: white lime；
The weight percent of each constituent of component B are as follows: PEG4000 5%, dodecyl benzyl dimethyl ammonium chloride 20%,
Cationic-type polyacrylamide 0.04%, water 74.96%.
Embodiment 3
A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer
Component A: white lime；
The weight percent of each constituent of component B are as follows: PEG8000 5%, dodecyl benzyl dimethyl ammonium chloride 15%,
Cationic-type polyacrylamide 0.06%, water 79.94%.
Embodiment 4
A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer
Component A: white lime；
The weight percent of each constituent of component B are as follows: PEG8000 5%, dodecyl benzyl dimethyl ammonium chloride 20%,
Cationic-type polyacrylamide 0.04%, water 74.96%.
Embodiment 5
A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer
Component A: white lime；
The weight percent of each constituent of component B are as follows: PEG8000 20%, dodecyl benzyl dimethyl ammonium chloride
20%, cationic-type polyacrylamide 0.02%, water 59.98%.
Embodiment 6
A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer
Component A: white lime；
The weight percent of each constituent of component B are as follows: PEG8000 20%, cetyl trimethylammonium bromide 20%, sun
Polyacrylamide 0.02%, water 59.98%.
Implementation result
Clay inhibitor prepared by the present invention is deposited for the poly carboxylic acid series water reducer in high mud laden water cement-based material system
In dispersibility and the problem of dispersion holding performance difference, and the design feature and absorption mechanism of bonding clay, to concrete admixture
Functional design is carried out, it is intended to absorption of the clay to poly carboxylic acid series water reducer can be effectively reduced, guarantee cement-based material work
Make the stabilization of performance and controllable.
Flowing degree of net paste of cement performance comparison test: using to the strongest bentonite of poly carboxylic acid series water reducer adsorption capacity as
Clay, volume is 3% in bentonite, and it is 0.15% that poly carboxylic acid series water reducer, which mixes solid amount, and component A volume is 0.5%, component B volume
It is 0.2%, water-cement ratio 0.29.First by cement, bentonite, component A and mixing water elder generation mix 1min, then addO-on therapy B and
Poly carboxylic acid series water reducer mix 3min again in mixture.Its net slurry initial flow degree and loss test result are shown in Table 1.
Concrete performance comparative test: cement consumption 370.5kg/m3, bentonite consumption is 9.5 kg/m3, component A use
Amount is 1.9 kg/m3, component B dosage is 0.76 kg/m3, water-cement ratio 0.45, sand coarse aggregate ratio 42%, poly carboxylic acid series water reducer is mixed solid
Amount is 0.15%, and the fineness modulus of sand is 2.5, and coarse aggregate is 5 ~ 31.5mm continuous grading.First by cement, bentonite, component A,
Sandstone aggregate and mixing water elder generation mix 1min, then addO-on therapy B and poly carboxylic acid series water reducer are mixed again in concrete mix
Close 1min.Its concrete initial slump and loss test result are shown in Table 2.
1 flowing degree of net paste of cement of table and loss test result
2 concrete slump of table and loss test result
Although the present invention lists section Example and discloses as above, they be not for limiting the present invention, it is any ripe
This those skilled in the art is known, without departing from the spirit and scope of the invention, can make various changes or retouch from working as, such as to certain part of raw material
Component or process time increase or decrease, but may not generate substantial effect to the effect of product, then this change
It also belongs within the scope of claims hereof protection scope defines.
Claims (2)
1. a kind of with the clay inhibitor for improving the anti-mud performance of poly carboxylic acid series water reducer, it is characterised in that: including component A, group
Divide B, wherein the mass ratio of component A and component B is 1.5 ~ 3.0:1；Component A is white lime；Component B is by following mass percent
Raw material composition:
Molecular weight polymers 5 ~ 25%
Organic cationic polymer 5 ~ 25%
Macromolecule polyalcohol 0.02 ~ 0.1%
Water 55 ~ 85%
Molecular weight polymers described in component B are any one or more than one in PEG4000, PEG6000, PEG8000
Mixture；
Organic cationic polymer described in component B is dodecyl benzyl dimethyl ammonium chloride, cetyl trimethyl bromine
Change mixture any one or more than one in ammonium；
Macromolecule polyalcohol described in component B is cationic-type polyacrylamide, and molecular weight is 16,000,000 ~ 20,000,000.
2. a kind of application method of clay inhibitor as described in claim 1, which comprises the following steps:
(1) described had into clay inhibitor component A, the cement-based material for improving the anti-mud performance of poly carboxylic acid series water reducer first
In the preparatory mix of all components 30 seconds ~ 90 seconds in addition to water-reducing agent；
(2) described then had into the clay inhibitor component B and polycarboxylic-acid for improving the anti-mud performance of poly carboxylic acid series water reducer
Mix 60 seconds ~ 180 seconds again are added in described step (1) the cement-based material mixture in water-reducing agent simultaneously.
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| CN201610998610.4A CN106517866B (en) | 2016-11-14 | 2016-11-14 | A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer |
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| CN201610998610.4A CN106517866B (en) | 2016-11-14 | 2016-11-14 | A kind of clay inhibitor and its application method with the improvement anti-mud performance of poly carboxylic acid series water reducer |
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| CN108947315A (en) * | 2018-08-25 | 2018-12-07 | 北京建工新型建材有限责任公司 | Hinder mud agent and preparation method thereof and the concrete mix comprising the resistance mud agent |
| CN110510903B (en) * | 2019-09-30 | 2021-11-16 | 中建商品混凝土有限公司 | Wet grinding dispersant for cement-based building waste slurry |
| CN111116898B (en) * | 2019-12-16 | 2022-04-01 | 江苏万邦新材料科技有限公司 | Clay inhibitor for polycarboxylate superplasticizer and preparation method thereof |
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| CN104310843B (en) * | 2014-09-26 | 2017-01-18 | 北京建筑大学 | Clay-resistant concrete function additive and preparation method thereof |
| CN104495865A (en) * | 2014-11-25 | 2015-04-08 | 上海建工集团股份有限公司 | Treating agent for inhibition of harm of montmorillonite clay to concrete and using method thereof |
| CN104973817B (en) * | 2015-07-06 | 2016-10-12 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of concrete viscosity regulator being applicable to use with polycarboxylate water-reducer compatibility and preparation method thereof |
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