CN110330302A - A kind of dedicated gypsum based self-leveling mortar of floor heating backfill - Google Patents
A kind of dedicated gypsum based self-leveling mortar of floor heating backfill Download PDFInfo
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- CN110330302A CN110330302A CN201910525301.9A CN201910525301A CN110330302A CN 110330302 A CN110330302 A CN 110330302A CN 201910525301 A CN201910525301 A CN 201910525301A CN 110330302 A CN110330302 A CN 110330302A
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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
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/147—Calcium sulfate hemi-hydrate with a specific crystal form beta-hemihydrate
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention discloses a kind of floor heatings of building material technical field to backfill dedicated gypsum based self-leveling mortar, component including following weight proportion: 350-500 parts of β land plaster, 140-200 parts of quartz sand, 2-4 parts of water-reducing agent, 1-3 parts of retarder, 1-2 parts of water-retaining agent, 4-8 parts of redispersable latex powder, 2-4 parts of wood fibre, 1-2 parts of defoaming agent, 30-40 parts of flyash, 1-3 parts of antiprecipitant, 1-2 parts of segregation reducing agent, 200-250 parts of water, it is good with mobility, curing time is short, intensity is high, surfacing, contraction distortion is small, adhesion strength is high, feature at low cost, expand the application field of α high-strength crystallite gypsum and iron tailings sand.
Description
Technical field
The present invention relates to building material technical field, specially a kind of floor heating backfills dedicated gypsum based self-leveling mortar.
Background technique
As bulk cement popularization, environmental protection, the important component for improving construction modernization level, dry-mixed mortar one
Directly by the great attention of state and society.China's dry-mixed mortar cause is formulated again, produces, application, economy etc. are also deposited
In some problems, cause dry-mixed mortar career development slow, at present due to architectural engineering to sand by the more of various functional requirements
Memberization starts a cut through the development of dry-mixed mortar cause gradually from extraordinary dry-mixed mortar, again with Self-leveling in feature dry-mixed mortar
Terrace sand by the total market size it is the most considerable, simultaneously because the continuous improvement of human cost, so that Self-leveling sand will be in economy
Aspect also gradually has competitiveness.
But traditional artificial floor construction is that mattess dabbing then is carried out artificial levelling construction, by originally
Level ground flatness influences the levelling thickness of ground artificial often in 2cm or more, and can just carry out by the maintenance of long period next
The construction of procedure.And terrace is that gravity flow self-leveling floor sand will be pumped to floor ground by Self-leveling sand, by liquid flowing
Feature Automatic Levelling, and rapid draing, artificially the levelling technique in face saves material and artificial relatively, shortens the construction period,
This Self-leveling sand is classified into cement base and gypsum base, and the Self-leveling sand of cement base is relatively mature by preparation technique, cost
It is relatively low, rigid index be easy it is up to standard, but through after a period of time be easy cracking, gypsum based self-leveling have dimensional stability
The advantages that good, drying is not cracked, the moisture absorption, gypsum based self-leveling sand will be used as " floor heating " levelling coating (floor heating and other heating
Mode is compared, and energy saving amplitude is about 20%, such as uses zoned temperature control device, and energy saving amplitude, will not be as cement up to 40%)
Screed is such, because of the generation cracking that expands with heat and contract with cold, plays phenomena such as drum.
But it is larger to prepare difficulty, is presently mainly prepared using α gypsum as main material, such higher cost, promotes
Difficulty is big, if β building gypsum plaster made of capable of being calcined using industry by-product gypsum is the superior Self-leveling sand of main material processability
Will, cost will largely be lower than cement-based self-leveling mortar, to a certain extent by promotion Self-leveling sand by popularization and application.Work
Industry by-product gypsum mainly includes the solid waste desulfurized gypsum of means of flue gas desulfurization of power plant process discharge, the life of Wet-process Phosphoric Acid Production process
The ardealite of discharge is produced, this solid waste annual emissions of China are pollutants urgently to be resolved at 50,000,000 tons or more.Such as
Fruit, which can obtain extensive utilization, will become a valuable resource.
Based on this, the present invention devises a kind of dedicated gypsum based self-leveling mortar of floor heating backfill, mentioned above to solve
Problem.
Summary of the invention
The purpose of the present invention is to provide a kind of floor heatings to backfill dedicated gypsum based self-leveling mortar, to solve above-mentioned background skill
The topic proposed in art.
To achieve the above object, the invention provides the following technical scheme: a kind of floor heating backfills dedicated gypsum based self-leveling sand
Slurry, the component including following weight proportion: 350-500 parts of β land plaster, 140-200 parts of quartz sand, 2-4 parts of water-reducing agent, retarder
1-3 parts, 1-2 parts of water-retaining agent, 4-8 parts of redispersable latex powder, 2-4 parts of wood fibre, 1-2 parts of defoaming agent, flyash 30-40
Part, 1-3 parts of antiprecipitant, 1-2 parts of segregation reducing agent, 200-250 parts of water.
Preferably, the component including following weight proportion: 400 parts of β land plaster, 170 parts of quartz sand, 3 parts of water-reducing agent, slow setting
2 parts of agent, 1 part of water-retaining agent, 6 parts of redispersable latex powder, 3 parts of wood fibre, 1 part of defoaming agent, 35 parts of flyash, antiprecipitant 2
Part, 1 part of segregation reducing agent, 240 parts of water.
Preferably, the β land plaster is formed by phosphatization by-product ardealite by high-temperature calcination.
Preferably, the quartz sand is mixed using 50 mesh~100 mesh and 100 mesh~140 mesh in the ratio of 2:3.
Preferably, the retarder is compounded using organic acid retarder and bone glue protein retarder according to the ratio of 2:3
It forms.
Preferably, the water-reducing agent using melamine water reducing agent and polycarboxylate water-reducer according to the ratio compounding of 3:1 and
At.
Preferably, the water-retaining agent use viscosity for 40000 hydroxypropyl methyl cellulose ether.
Preferably, the defoaming agent includes in polyether antifoam agent, the fatty acid ester compounded object of higher alcohols and polyether-modified silicon
One or more mixtures.
Preferably, the segregation reducing agent is aluminium-magnesium silicate, starch ether, montmorillonite, attapulgite, bentonite, gas phase dioxy
SiClx, attapulgite clay, organic thixotrope of rilanit special, hydrophobically modified polyurethane rheological agent, hydrophobically modified polyethers stream
Become one or more mixtures in agent.
Compared with prior art, the beneficial effects of the present invention are:
1, β land plaster is formed by phosphatization by-product ardealite by high-temperature calcination, the reasonably optimizing of formula is promoted, so that industrial
For waste residue by-product gypsum after calcining as β gypsum, the gypsum based self-leveling sand that can be used for producing the compound standard of processability will
Material；
2, retarder is compounded using organic acid retarder and bone glue protein retarder according to the ratio of 2:3, significantly
Improve gypsum based self-leveling sand by resistance to compression, flexural strength；
3, water-reducing agent is compounded using melamine water reducing agent and polycarboxylate water-reducer according to the ratio of 3:1, with gypsum
Material has good adaptability, and the water-reducing effect of the two compounding both is significantly better than, guarantee composite demand fluidity,
Proof strength on the basis of 30min fluidity loss will not influence Self-leveling sand for surface-brightening；
4, water-retaining agent uses viscosity for 40000 hydroxypropyl methyl cellulose ether, and water-retaining agent is better than the production of other cellulose ethers
Product can effectively significantly reduce the loss of 30min fluidity, control within the scope of standard requirements；
5, segregation reducing agent mainly plays thickening, anti-eduction in mortar, and does not influence the mobile performance of material, using one
Quantitative flyash can be improved gypsum based self-leveling sand by fluidity because fly ash grain is largely cenosphere,
It is appropriate to penetrate into the raising that can contribute to fluidity；
6, have mobility is good, curing time is short, intensity is high, surfacing, contraction distortion is small, adhesion strength is high, at
This low feature expands the application field of α high-strength crystallite gypsum and iron tailings sand.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the proportion table figure of ingredient in embodiment of the invention；
Fig. 2 is present invention properties table figure in embodiment.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of dedicated gypsum based self-leveling mortar of floor heating backfill, packet
Include the component of following weight proportion: 350-500 parts of β land plaster, 140-200 parts of quartz sand, 2-4 parts of water-reducing agent, retarder 1-3
Part, 1-2 parts of water-retaining agent, 4-8 parts of redispersable latex powder, 2-4 parts of wood fibre, 1-2 parts of defoaming agent, 30-40 parts of flyash,
1-3 parts of antiprecipitant, 1-2 parts of segregation reducing agent, 200-250 parts of water.
Wherein, the β land plaster is formed by phosphatization by-product ardealite by high-temperature calcination, promotes the reasonably optimizing of formula,
So that industrial residue by-product gypsum after calcining as β gypsum, can be used for producing the gypsum base of the compound standard of processability certainly
Levelling sand is by material.
Wherein, the quartz sand is mixed using 50 mesh~100 mesh and 100 mesh~140 mesh in the ratio of 2:3.
Wherein, the retarder compounded using organic acid retarder and bone glue protein retarder according to the ratio of 2:3 and
At, greatly improve gypsum based self-leveling sand by resistance to compression, flexural strength.
Wherein, the water-reducing agent is compounded using melamine water reducing agent and polycarboxylate water-reducer according to the ratio of 3:1,
There is good adaptability with gypsum material, the water-reducing effect of the two compounding is significantly better than the two, guarantees the flowing of composite demand
Proof strength on the basis of degree, 30min fluidity loss, will not influence Self-leveling sand for surface-brightening.
Wherein, the water-retaining agent uses viscosity for 40000 hydroxypropyl methyl cellulose ether, and water-retaining agent is better than other fibers
Plain ether product, viscosity is relatively low under identical water retention, and the viscosity of hydroxypropyl methyl cellulose ether is related with its molecular weight, point
The son amount the big, and then thickening effect is just more obvious, and hydroxypropyl methyl cellulose ether can effectively significantly reduce the damage of 30min fluidity
It loses, controls within the scope of standard requirements.
Wherein, the defoaming agent includes one in polyether antifoam agent, the fatty acid ester compounded object of higher alcohols and polyether-modified silicon
Kind or a variety of mixtures.
Wherein, the segregation reducing agent is aluminium-magnesium silicate, starch ether, montmorillonite, attapulgite, bentonite, gas phase titanium dioxide
Silicon, attapulgite clay, organic thixotrope of rilanit special, hydrophobically modified polyurethane rheological agent, hydrophobically modified polyethers rheology
One or more mixtures in agent, volume can be assembled arbitrarily within the above range.Segregation reducing agent mainly plays thickening in mortar, resists
Eduction, and the mobile performance of material is not influenced.
And using a certain amount of flyash can be improved gypsum based self-leveling sand by fluidity, because of fly ash grain
Most of is cenosphere, appropriate to penetrate into the raising that can contribute to fluidity.
Embodiment one
A kind of dedicated gypsum based self-leveling mortar of floor heating backfill, the component including following weight proportion: β land plaster 350
Part, 2 parts of wood fibre, disappears at 140 parts of quartz sand, 2 parts of water-reducing agent, 1 part of retarder, 1 part of water-retaining agent, 4 parts of redispersable latex powder
1 part of infusion, 30 parts of flyash, 1 part of antiprecipitant, 1 part of segregation reducing agent, 200 parts of water.
2kg sample is weighed according to the ratio, water is poured into glue sand agitator, is poured slowly into gypsum base from advection powder, at a slow speed
Stir 1min, then again quickly stirring 1min to uniform.
The properties of gypsum based self-leveling mortar are carried out according to standard JC/T1023-2007 " gypsum based self-leveling sand is incited somebody to action "
Test, performance such as Fig. 2.
Embodiment two
A kind of dedicated gypsum based self-leveling mortar of floor heating backfill, the component including following weight proportion: β land plaster 400
Part, 3 parts of wood fibre, disappears at 170 parts of quartz sand, 3 parts of water-reducing agent, 2 parts of retarder, 2 parts of water-retaining agent, 5 parts of redispersable latex powder
2 parts of infusion, 32 parts of flyash, 2 parts of antiprecipitant, 2 parts of segregation reducing agent, 240 parts of water.
2kg sample is weighed according to the ratio, water is poured into glue sand agitator, is poured slowly into gypsum base from advection powder, at a slow speed
Stir 1min, then again quickly stirring 1min to uniform.
The properties of gypsum based self-leveling mortar are carried out according to standard JC/T1023-2007 " gypsum based self-leveling sand is incited somebody to action "
Test, performance such as Fig. 2.
Embodiment three
400 parts of β land plaster, 170 parts of quartz sand, 3 parts of water-reducing agent, 2 parts of retarder, 1 part of water-retaining agent, redispersable latex powder
6 parts, 3 parts of wood fibre, 1 part of defoaming agent, 35 parts of flyash, 2 parts of antiprecipitant, 1 part of segregation reducing agent, 240 parts of water.
2kg sample is weighed according to the ratio, water is poured into glue sand agitator, is poured slowly into gypsum base from advection powder, at a slow speed
Stir 1min, then again quickly stirring 1min to uniform.
The properties of gypsum based self-leveling mortar are carried out according to standard JC/T1023-2007 " gypsum based self-leveling sand is incited somebody to action "
Test, performance such as Fig. 2.
Example IV
A kind of dedicated gypsum based self-leveling mortar of floor heating backfill, the component including following weight proportion: β land plaster 400
Part, 4 parts of wood fibre, disappears at 170 parts of quartz sand, 3 parts of water-reducing agent, 3 parts of retarder, 2 parts of water-retaining agent, 7 parts of redispersable latex powder
1 part of infusion, 35 parts of flyash, 3 parts of antiprecipitant, 2 parts of segregation reducing agent, 240 parts of water.
2kg sample is weighed according to the ratio, water is poured into glue sand agitator, is poured slowly into gypsum base from advection powder, at a slow speed
Stir 1min, then again quickly stirring 1min to uniform.
The properties of gypsum based self-leveling mortar are carried out according to standard JC/T1023-2007 " gypsum based self-leveling sand is incited somebody to action "
Test, performance such as Fig. 2.
Embodiment five
A kind of dedicated gypsum based self-leveling mortar of floor heating backfill, the component including following weight proportion: 500 parts of β land plaster,
200 parts of quartz sand, 4 parts of water-reducing agent, 3 parts of retarder, 2 parts of water-retaining agent, 8 parts of redispersable latex powder, 4 parts of wood fibre, defoaming
2 parts of agent, 40 parts of flyash, 3 parts of antiprecipitant, 2 parts of segregation reducing agent, 250 parts of water.
2kg sample is weighed according to the ratio, water is poured into glue sand agitator, is poured slowly into gypsum base from advection powder, at a slow speed
Stir 1min, then again quickly stirring 1min to uniform.
The properties of gypsum based self-leveling mortar are carried out according to standard JC/T1023-2007 " gypsum based self-leveling sand is incited somebody to action "
Test, performance such as Fig. 2.
In summary the performance indicator of gypsum based self-leveling mortar made from embodiment, embodiment three are gypsum based self-leveling
The most preferred embodiment of mortar, with mobility is good, curing time is short, intensity is high, surfacing, contraction distortion is small, bonding is strong
Degree is high, feature at low cost is had studied by the gradually adjustment and comparative analysis of allocation plan with industrial by-product phosphatization by-product phosphorus
Gypsum is main material by high-temperature calcination β land plaster, by adding suitable retarder, water-reducing agent, water-retaining agent, cellulose
Ether, filler have adjusted setting time, the fluidity, fluidity loss, flexural strength of formula, solve between slow setting and intensity
Conflict, the conflict between fluidity and intensity, conflict between fluidity and water-retaining property the problems such as, prepared to comply with standard and want
The gypsum base self-leveling mortar material asked.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (9)
1. a kind of floor heating backfills dedicated gypsum based self-leveling mortar, it is characterised in that: the component including following weight proportion: β stone
350-500 parts of cream powder, 140-200 parts of quartz sand, 2-4 parts of water-reducing agent, 1-3 parts of retarder, 1-2 parts of water-retaining agent, redispersible cream
4-8 parts of rubber powder, 2-4 parts of wood fibre, 1-2 parts of defoaming agent, 30-40 parts of flyash, 1-3 parts of antiprecipitant, segregation reducing agent 1-2
Part, 200-250 parts of water.
2. a kind of floor heating according to claim 1 backfills dedicated gypsum based self-leveling mortar, it is characterised in that: including following
The component of weight proportion: 400 parts of β land plaster, 3 parts of water-reducing agent, 2 parts of retarder, 1 part of water-retaining agent, can divide 170 parts of quartz sand again
Dissipate 6 parts of latex powder, 3 parts of wood fibre, 1 part of defoaming agent, 35 parts of flyash, 2 parts of antiprecipitant, 1 part of segregation reducing agent, 240 parts of water.
3. a kind of floor heating according to claim 1 backfills dedicated gypsum based self-leveling mortar, it is characterised in that: the β stone
Cream powder is formed by phosphatization by-product ardealite by high-temperature calcination.
4. a kind of floor heating according to claim 1 backfills dedicated gypsum based self-leveling mortar, it is characterised in that: the quartz
Sand is mixed using 50 mesh~100 mesh and 100 mesh~140 mesh in the ratio of 2:3.
5. a kind of floor heating according to claim 1 backfills dedicated gypsum based self-leveling mortar, it is characterised in that: the slow setting
Agent is compounded using organic acid retarder and bone glue protein retarder according to the ratio of 2:3.
6. a kind of floor heating according to claim 1 backfills dedicated gypsum based self-leveling mortar, it is characterised in that: the diminishing
Agent is compounded using melamine water reducing agent and polycarboxylate water-reducer according to the ratio of 3:1.
7. a kind of floor heating according to claim 1 backfills dedicated gypsum based self-leveling mortar, it is characterised in that: the water conservation
Agent use viscosity for 40000 hydroxypropyl methyl cellulose ether.
8. a kind of floor heating according to claim 1 backfills dedicated gypsum based self-leveling mortar, it is characterised in that: the defoaming
Agent includes one of polyether antifoam agent, the fatty acid ester compounded object of higher alcohols and polyether-modified silicon or a variety of mixtures.
9. a kind of floor heating according to claim 1 backfills dedicated gypsum based self-leveling mortar, it is characterised in that: it is described resist from
Analysis agent is aluminium-magnesium silicate, starch ether, montmorillonite, attapulgite, bentonite, fumed silica, attapulgite clay, hydrogenation castor
Organic thixotrope of sesame oil, hydrophobically modified polyurethane rheological agent, one or more mixtures in hydrophobically modified polyethers rheological agent.
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| CN111233425A (en) * | 2020-03-17 | 2020-06-05 | 南京坤昌新材料有限公司 | High-strength gypsum self-leveling material, preparation method and use method thereof |
| CN111718171A (en) * | 2020-05-25 | 2020-09-29 | 贵州省昊越新型材料科技有限公司 | Gypsum ground expansion backfill treasure |
| CN111943627A (en) * | 2020-08-26 | 2020-11-17 | 贵阳森蓝环保建材有限公司 | Beta phosphogypsum-based self-leveling mortar and preparation method thereof |
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| CN114014624A (en) * | 2021-12-01 | 2022-02-08 | 富思众诚(北京)科技有限公司 | Method for proportioning gypsum-based self-leveling mortar special for ground heating backfill |
| CN115745557A (en) * | 2022-12-26 | 2023-03-07 | 倍福德新型建材（江苏）有限公司 | Gypsum self-leveling mortar with high leveling precision for building construction |
| CN115819061A (en) * | 2022-11-30 | 2023-03-21 | 江苏省苏安能节能建材科技有限公司 | Gypsum-based self-leveling mortar and preparation method thereof |
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| CN111233425A (en) * | 2020-03-17 | 2020-06-05 | 南京坤昌新材料有限公司 | High-strength gypsum self-leveling material, preparation method and use method thereof |
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| CN112851284A (en) * | 2021-01-29 | 2021-05-28 | 南京工业大学 | Gypsum self-leveling mortar for ground heating backfill and preparation method thereof |
| CN114014624A (en) * | 2021-12-01 | 2022-02-08 | 富思众诚(北京)科技有限公司 | Method for proportioning gypsum-based self-leveling mortar special for ground heating backfill |
| CN115819061A (en) * | 2022-11-30 | 2023-03-21 | 江苏省苏安能节能建材科技有限公司 | Gypsum-based self-leveling mortar and preparation method thereof |
| CN115745557A (en) * | 2022-12-26 | 2023-03-07 | 倍福德新型建材（江苏）有限公司 | Gypsum self-leveling mortar with high leveling precision for building construction |
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Application publication date: 20191015 |