CN107298565A - A kind of abrasion-resistant ground cement-based self-leveling mortar and preparation method thereof - Google Patents
A kind of abrasion-resistant ground cement-based self-leveling mortar and preparation method thereof Download PDFInfo
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- CN107298565A CN107298565A CN201710669710.7A CN201710669710A CN107298565A CN 107298565 A CN107298565 A CN 107298565A CN 201710669710 A CN201710669710 A CN 201710669710A CN 107298565 A CN107298565 A CN 107298565A
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- Prior art keywords
- cement
- abrasion
- based self
- leveling mortar
- resistant ground
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Classifications
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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
- C04B28/02—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
- C04B28/06—Aluminous 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/60—Flooring materials
- C04B2111/62—Self-levelling compositions
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a kind of abrasion-resistant ground cement-based self-leveling mortar, belong to gravity flowing levelling mortar technical field, it includes the following components of mass percent：Portland cement 27%~35%, aluminate cement 7.5%~9.5%, slag 38%~46%, flyash 14%~18%, desulfurated plaster 1.7%~2.6%, water reducer 0.25%~0.30%, water-loss reducer 0.015%~0.020%, defoamer 0.020%~0.025%.The invention also discloses its preparation method.The present invention makes full use of the anti-wear performance of trade waste slag, and the mortar performance of preparation is stable, and anti-wear performance is excellent, good endurance, and the flyash later stage of admixture can participate in the hydration reaction of cement, improves the later strength and anti-wear performance of gravity flowing levelling mortar；The preparation method of the present invention, it is a large amount of to use industrial residue (slag, flyash and desulfurated plaster), the production cost of product is greatly lowered, it is that prepared by ground cement-based self-leveling mortar and the recycling of industrial residue, synthesization are using new approach is opened, possesses good practicality.
Description
Technical field
The invention belongs to gravity flowing levelling mortar technical field, and in particular to a kind of abrasion-resistant ground cement-based self-leveling mortar and
Its preparation method.
Background technology
Ground is by water with cement-based self-leveling mortar (Cementitious self-leveling floor mortar)
Mud based cementitious material, fine aggregate, filler and additive etc. are constituted, with having mobility after water (or emulsion) stirring or slightly aiding in
Property spread out and put on just can flow levelling ground material.Cement-based self-leveling mortar has that flow leveling is good, early strength is high, wear-resisting
Property it is good, be easy to laying, speed of application fast, short time limit, with carrying and decoration dual-use function and the good building materials production of development prospect
Product, are widely used in the various openings such as newly-built or reconstruction industrial premises, workshop, business sales field, exhibition room, gymnasium, hospital, storage
Space and the ground surface works of office, cement-based self-leveling mortar surface are fine and smooth, gray, there is simple naturally decorative effect,
But as surface material, its wearability is just particularly important.
Research of the China to self-leveling material is started late, with state foreign minister in terms of basic research, application and development
Than also there is a certain distance.The fine aggregate of the cement-based self-leveling mortar of current domestic production still using natural siliceous sand as
It is main, due to the shortage of natural siliceous sand resource so that the gravity flowing levelling mortar of preparation exist wear no resistance, the easy efflorescence in surface, price
High the problems such as.Therefore how to prepare good anti-wear performance, surface not efflorescence, low-cost gravity flowing levelling mortar is currently urgently to solve
Problem.
The content of the invention
Goal of the invention：It is an object of the invention to provide a kind of preparation side of abrasion-resistant ground cement-based self-leveling mortar
Method, the mortar has that anti-wear performance is good, later strength is high, surface is not pulverized easily, the low feature of price, be ground cement base from
The recycling of the preparation of levelling mortar and industrial residue, synthesization, which are utilized, opens new approach；The invention also discloses one kind is resistance to
Grind the preparation method of ground cement-based self-leveling mortar.
Technical scheme：For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of abrasion-resistant ground cement-based self-leveling mortar, includes the following components of mass percent：Normal silicate water
Mud 27%~35%, aluminate cement 7.5%~9.5%, slag 38%~46%, flyash 14%~18%, desulfurated plaster
1.7%~2.6%, water reducer 0.25%~0.30%, water-loss reducer 0.015%~0.020% and defoamer 0.020%~
0.025%.
Described Portland cement model PO42.5R；Described aluminate cement model CA-50.
Described slag derives from by magnetic separation and is aged more than 3 years steel mill's waste residues, and particle diameter is 0.16~0.63mm, warp
Pressure steams experiment, no expansion.
Described flyash is II grade of ash or I grade of ash.
Described desulfurated plaster be coal-burning power plant's ammonia process of desulfurization by-produced gypsum, fineness be 0.080mm square hole screens tail over≤
1.0%；SO3Content >=38.0%.
Described water-loss reducer is hydroxypropyl methyl cellulose, model TE-E150000.
Described water reducer is high performance water reducing agent of polyocarboxy acid, model PCA-300T.
Described defoamer is SBT-BB34.
A kind of described abrasion-resistant ground preparation method of cement-based self-leveling sand, comprises the following steps：
1) by Portland cement, aluminate cement, slag, desulfurated plaster, flyash, water reducer, water-loss reducer press than
Example mixing, obtains powders mixture；
2) river of running water or cleaning is measured in proportion, pours into agitator, powders mixture is at the uniform velocity put into 30s
In agitator, low speed mixes and stirs 1min, stops after stirring, is mixed and stirred uneven on paddle and material pot wall with scraper in 30s
Thing is scraped, and adds defoamer, then high-speed stirred 1min, quiet to stop 5min, is further continued for high-speed stirred 15s, is obtained a kind of abrasion-resistant ground
With cement-based self-leveling mortar, make the initial flow degree and 20min fluidities of a kind of abrasion-resistant ground cement-based self-leveling mortar
>=130mm, such as fluidity do not reach requirement, amount of water are can adjust, untill fluidity meets the requirements.
The rotational velocity that described low speed is mixed and stirred when being stirring vane low speed is 145 ± 5r/min, revolution speed is 62 ±
5r/min；Rotational velocity when described high-speed stirred is stirring vane high speed is 285 ± 10r/min, revolution speed is 125 ±
10r/min。
Beneficial effect：Compared with prior art, a kind of abrasion-resistant ground cement-based self-leveling mortar of the invention, fully profit
Trade waste slag is used, mortar performance stabilization is prepared, anti-wear performance is good, and good endurance, the flyash later stage can participate in cement
Hydration reaction, improves the later strength of mortar；A kind of preparation method of abrasion-resistant ground cement-based self-leveling mortar of the present invention,
A large amount of to use industrial residue (slag, flyash and desulfurated plaster), the production cost of product is greatly reduced, and is ground cement base
The recycling of gravity flowing levelling mortar preparation and industrial residue, synthesization, which are utilized, opens new approach, possesses good practicality.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
As shown in table 1, a kind of abrasion-resistant ground cement-based self-leveling mortar, includes the following components of mass percent：It is general
Logical portland cement 27%~35%, aluminate cement 7.5%~9.5%, slag 38%~46%, flyash 14%~
18%th, desulfurated plaster 1.7%~2.6%, water reducer 0.25%~0.30%, water-loss reducer 0.015%~0.020%, defoamer
0.020%~0.025%.
Portland cement model PO42.5R；Aluminate cement model CA-50.
Slag is by magnetic separation and is aged more than 3 years, and particle diameter is 0.16~0.63mm, and experiment, no expansion are steamed through pressure.
Flyash is II grade of ash or I grade of ash (commercially available).
Desulfurated plaster fineness is that 0.080mm square hole screens tail over≤1.0%；SO3Content is more than >=38.0%.
Water-loss reducer is hydroxypropyl methyl cellulose, model TE-E150000 types (producer：The limited public affairs of the friendly chemical industry in Wuxi three
Department).
Water reducer is high performance water reducing agent of polyocarboxy acid, model PCA-300T types (producer：Jiangsu Su Bote new materials are limited
Company).
Defoamer is SBT-BB34 types (producer：Jiangsu Su Bote new materials Co., Ltd).
A kind of abrasion-resistant ground cement-based self-leveling mortar preparation method, comprises the following steps：
1) by Portland cement, aluminate cement, slag, desulfurated plaster, flyash, water reducer, water-loss reducer press than
Example mixing, obtains powders mixture；
2) in proportion the running water of measured amounts or cleaning river, agitator is poured into, by powders mixture in 30s
At the uniform velocity it is put into agitator, low speed mixes and stirs 1min, stops after stirring, with scraper is by paddle and expects in pot wall not in 30s
Uniform mix is scraped, and adds defoamer, then high-speed stirred 1min, quiet to stop 5min, is further continued for high-speed stirred 15s, is determined immediately
The fluidity of mortar, makes the initial flow degree and 20min fluidities >=130mm of mortar, and such as fluidity does not reach requirement, can adjust
Amount of water, untill meeting the requirements.
The rotational velocity that low speed is mixed and stirred when being stirring vane low speed is 145 ± 5r/min, and revolution speed is 62 ± 5r/min；
Rotational velocity when high-speed stirred is stirring vane high speed is 285 ± 10r/min, and revolution speed is 125 ± 10r/min.
Embodiment 1
A kind of abrasion-resistant ground cement-based self-leveling mortar, includes the following components of mass percent：Normal silicate water
Mud 35%, aluminate cement 7.5%, slag 38%, flyash 17.5%, desulfurated plaster 1.7%, water reducer 0.30%, water conservation
Agent 0.018%, defoamer 0.022%.
Embodiment 2
A kind of abrasion-resistant ground cement-based self-leveling mortar, includes the following components of mass percent：Normal silicate water
Mud 33%, aluminate cement 8.0%, slag 40%, flyash 16.8%, desulfurated plaster 1.9%, water reducer 0.29%, water conservation
Agent 0.018%, defoamer 0.022%.
Embodiment 3
A kind of abrasion-resistant ground cement-based self-leveling mortar, includes the following components of mass percent：Normal silicate water
Mud 31%, aluminate cement 8.5%, slag 42%, flyash 16.1%, desulfurated plaster 2.1%, water reducer 0.28%, water conservation
Agent 0.018%, defoamer 0.022%.
Embodiment 4
A kind of abrasion-resistant ground cement-based self-leveling mortar, includes the following components of mass percent：Normal silicate water
Mud 29%, aluminate cement 9.0%, slag 44%, flyash 15.4%, desulfurated plaster 2.3%, water reducer 0.27%, water conservation
Agent 0.018%, defoamer 0.022%.
Embodiment 5
A kind of abrasion-resistant ground cement-based self-leveling mortar, includes the following components of mass percent：Normal silicate water
Mud 27%, aluminate cement 9.5%, slag 46%, flyash 14.6%, desulfurated plaster 2.6%, water reducer 0.25%, water conservation
Agent 0.018%, defoamer 0.022%.
A kind of abrasion-resistant ground cement-based self-leveling mortar Example formulations of table 1
As shown in table 1, a kind of preparation method of abrasion-resistant ground cement-based self-leveling mortar, comprises the following steps：
1) by Portland cement, aluminate cement, slag, desulfurated plaster, flyash, water reducer, water-loss reducer press than
Example mixing, obtains powders mixture 2kg.
2) running water or the river of cleaning taken by the proportional quantities corresponding with 2kg powders mixtures, agitator poured into, by powder
Material mixture is at the uniform velocity put into agitator in 30s, and low speed mixes and stirs 1min, is stopped after stirring, with scraper by paddle in 30s
Scraped with the uneven mix in material pot wall, add defoamer, then high-speed stirred 1min, it is quiet to stop 5min, it is further continued for high-speed stirring
15s is mixed, the fluidity of mortar is determined immediately, makes the initial flow degree and 20min fluidities >=130mm of mortar, such as fluidity reaches
Less than requiring, 2kg powders mixtures should be weighed again by said ratio and mixed, adjust amount of water, until the mortar mixed and stirred
Untill initial flow degree and 20min fluidities meet the requirements.
Ground prepared by five kinds of proportionings of the above is shown in Table 2 with cement-based self-leveling mortar the performance test results.
A kind of cement-based self-leveling mortar embodiment 1-5 performance tests of the abrasion-resistant ground of table 2
From the result of embodiment 1~5, the ground cement-based self-leveling mortar performance prepared using the present invention can reach
Arrive《JC/T 985-2005 ground cement-based self-leveling mortar》Performance requirement, wherein, the mortar compression strength of 28 days reaches
C40 class requirements, the mortar rupture strength of 28 days reaches F7 class requirements；The anti-wear performance of mortar is significantly improved, its wearability
Only 0.18~0.28g, far below the requirement of regulation≤0.50g in standard.
Claims (10)
1. a kind of abrasion-resistant ground cement-based self-leveling mortar, it is characterised in that：Following components including mass percent：Commonly
Portland cement 27%~35%, aluminate cement 7.5%~9.5%, slag 38%~46%, flyash 14%~18%,
Desulfurated plaster 1.7%~2.6%, water reducer 0.25%~0.30%, water-loss reducer 0.015%~0.020% and defoamer
0.020%~0.025%.
2. a kind of abrasion-resistant ground cement-based self-leveling mortar according to claim 1, it is characterised in that：Described is common
Portland cement model PO42.5R；Described aluminate cement model CA-50.
3. a kind of abrasion-resistant ground cement-based self-leveling mortar according to claim 1, it is characterised in that：Described slag
From by more than 3 years steel mill's waste residues of magnetic separation and ageing, particle diameter is 0.16~0.63mm, and experiment, no expansion are steamed through pressure.
4. a kind of abrasion-resistant ground cement-based self-leveling mortar according to claim 1, it is characterised in that：Described fine coal
Ash is II grade of ash or I grade of ash.
5. a kind of abrasion-resistant ground cement-based self-leveling mortar according to claim 1, it is characterised in that：Described desulfurization
Gypsum is coal-burning power plant's ammonia process of desulfurization by-produced gypsum, and fineness is that 0.080mm square hole screens tail over≤1.0%；SO3Content >=
38.0%.
6. a kind of abrasion-resistant ground cement-based self-leveling mortar according to claim 1, it is characterised in that：Described water conservation
Agent is hydroxypropyl methyl cellulose, model TE-E150000.
7. a kind of abrasion-resistant ground cement-based self-leveling mortar according to claim 1, it is characterised in that：Described diminishing
Agent is high performance water reducing agent of polyocarboxy acid, model PCA-300T.
8. a kind of abrasion-resistant ground cement-based self-leveling mortar according to claim 1, it is characterised in that：Described froth breaking
Agent is SBT-BB34.
9. a kind of preparation method of abrasion-resistant ground cement-based self-leveling sand in claim 1~8 described in any one, it is special
Levy and be, comprise the following steps：
1) Portland cement, aluminate cement, slag, desulfurated plaster, flyash, water reducer, water-loss reducer are mixed in proportion
Close, obtain powders mixture；
2) river of running water or cleaning is measured in proportion, pours into agitator, powders mixture is at the uniform velocity put into agitator, it is low
Speed is mixed and stirred, and is stopped after stirring, is scraped the uneven mix on paddle and material pot wall with scraper, is added defoamer, then high
Speed stirring, it is quiet to stop, high-speed stirred is further continued for, abrasion-resistant ground cement-based self-leveling mortar is obtained, makes a kind of abrasion-resistant ground water
Initial flow degree and 20min fluidity >=130mm of mud based self-leveling mortar.
10. a kind of preparation method of abrasion-resistant ground cement-based self-leveling mortar according to claim 9, its feature exists
In：The rotational velocity that described low speed is mixed and stirred when being stirring vane low speed is 145 ± 5r/min, and revolution speed is 62 ± 5r/
min；Rotational velocity when described high-speed stirred is stirring vane high speed is 285 ± 10r/min, revolution speed is 125 ±
10r/min。
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Cited By (4)
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| CN108249870A (en) * | 2018-02-27 | 2018-07-06 | 盐城普菲特新材料科技有限公司 | A kind of cracking resistance abrasion-resistant ground cement-based self-leveling mortar and preparation method thereof |
| CN108409244A (en) * | 2018-04-03 | 2018-08-17 | 盐城工学院 | A kind of cracking resistance abrasion-resistant concrete ground cement-base wear-resistant material and preparation method thereof |
| CN110342890A (en) * | 2019-08-27 | 2019-10-18 | 盐城工学院 | Desulfurized gypsum slurry prepares high-strength cement based self-leveling mortar and preparation method thereof |
| CN113372079A (en) * | 2021-04-30 | 2021-09-10 | 河南建筑材料研究设计院有限责任公司 | High-wear-resistance gypsum-based self-leveling mortar and preparation method thereof |
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