CN105060831A - Seamless self-leveling cement millstone and preparation method therefor - Google Patents
Seamless self-leveling cement millstone and preparation method therefor Download PDFInfo
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- CN105060831A CN105060831A CN201510483511.8A CN201510483511A CN105060831A CN 105060831 A CN105060831 A CN 105060831A CN 201510483511 A CN201510483511 A CN 201510483511A CN 105060831 A CN105060831 A CN 105060831A
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- leveling cement
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Abstract
The present invention discloses a seamless self-leveling cement millstone. The seamless self-leveling cement millstone consists of the following raw materials in parts by weight: 15-25 parts of sulphoaluminate cement; 10-20 parts of ordinary portland cement; 5-10 parts of triplesuperphosphate; 4-5 parts of plaster; 1-2 parts of talcum powder; 0.3-0.7 part of cellulose; 0.8-1 part of water-soluble dispersible rubber powder; 0.5-0.8 part of a water reducing agent; 0.8-1.5 parts of a defoaming agent; 35-45 parts of quartz sand; and 25-35 parts of colored sand. The preparation method comprises: weighing, mixing for a first time, mixing for a second time and mixing for a third time. The seamless self-leveling cement millstone disclosed by the present invention is high in compressive and bending strength, low in expansion and contraction rate, not prone to crack, high in surface abrasion resistance, and good in construction leveling performance and quality stability, and the surface of the millstone has natural granite color and the characteristics of blobs; The preparation method for the seamless self-leveling cement millstone has the characteristics of simple and quick operation, convenient preparation, and low cost, and is suitable for industrial mass production.
Description
Technical field
The present invention relates to a kind of material of construction, relate in particular to a kind of without seam self-leveling cement grinding stone and preparation method thereof.
Background technology
Terrazzo (also claiming highlighted terrazzo, brilliant magic stone) is goods rubble being admixed the polishing of cement production systD concrete product rear surface.Be commonly used to manufacture the goods such as floor tile, table top, tank.
Self-leveling cement is a kind of high-new environmentfriendly products of high in technological content, sport technique segment more complicated.It is the type that the is dry mixed powder material being become to be grouped into by various active, and scene is mixed water and can be used.Slightly launch through scraper, high flat surfaces can be obtained.Setting rate is fast, can go up people's walking after 4-5 hours, can carry out surface construction (as paving timber floor, adamantine plate etc.) after 24 hours, quick construction, easy be Traditional Man levelling incomparable.It is safe, pollution-free, attractive in appearance, rapid construction and coming into operation, and is the feature of self-leveling cement.It enhance the operational procedure of civilization, create the comfortable smooth space of high-quality, the paving of diversified beautiful veneer material, allow life add gorgeous color.Self-leveling cement is of many uses, can be used for industrial premises, workshop, storage, market, exhibition room, gymnasium, hospital, various open space, office etc., also for house, villa, warm little space etc.Can be used as facing surface layer, also can be used as wear-resisting basic unit.
There is following shortcoming in existing self-leveling cement and traditional terrazzo:
1. easily cause laminate structure dehydration, it is on the one hand the evaporation due to free water, makes the dehydration of gravity flowing levelling mortar laminate structure produce dry shrinkage, makes mortar produce cracking, and causes screed seepage, and causes and come off; Be the water suction of gravity flow flat bed on the other hand, make the early stage dehydration fast of mortar.
2. easily cause gravity flow flat bed and ground layer interface deformation inconsistent, its major cause is when the temperature is changed on the one hand, because the temperature expansion coefficient of gravity flow flat bed and ground layer is inconsistent, makes interface locations produce inconsistent distortion, and easily cause interface to produce hollowing, and then ftracture and come off; Be the volumetric shrinkage due to the flat bed that flows automatically on the other hand, make both produce interface deformation inconsistent.
3. traditional terrazzo floor resistance to corrosion is poor, and easily breaks up, and is secondly that terrazzo floor stain resistance is very poor, and void ratio is comparatively large, and this just means that greasy dirt, impurity easily enter among terrazzo gap, thus pollutes terrazzo floor.
Summary of the invention
The object of the invention is to the shortcoming of the prior art overcoming cement-based self-leveling and traditional terrazzo, there is provided a kind of without seam self-leveling cement grinding stone and preparation method thereof, this is without seam self-leveling cement grinding stone pressure-proof and snap-resistent intensity is high, wear-resisting and degree of compactness is high, rate of expand to shrink is little, do not ftracture, 5-10mm thin layer construction excellent performance and quality stability good, surface has the feature of natural granite color and spot simultaneously; Preparation method without seam self-leveling cement grinding stone has simple to operate, easy to prepare, that cost is low characteristic, is applicable to industrialization scale operation.
Object of the present invention is achieved through the following technical solutions: a kind of without seam self-leveling cement grinding stone, it is made up of the raw material of following weight parts:
Further, the order number of described quartz sand is 40 ~ 120 orders.
Without a preparation method for seam self-leveling cement grinding stone, it comprises the following steps:
S1. weigh: take each raw material by above-mentioned weight ratio, for subsequent use;
S2. mixed once: coarse whiting, ɑ-semi-hydrated gypsum, talcum powder, Mierocrystalline cellulose, water-soluble, dispersible rubber powder, water reducer, defoamer are dropped in mixing machine and carry out mixed once, the rotating speed of mixing machine is 1300 ~ 1700rad/min, mixing time is 4 ~ 8min, is mixing masterbatch;
S3. two mixing: aluminosulfate cement, ordinary Portland cement, quartz sand, mineral fibre are joined in the mixing masterbatch of step S2 gained, mix and blend 4 ~ 8min under 2300 ~ 2700rad/min rotating speed, obtain without seam self-leveling cement mortar;
S4. three mixing: during site operation, color sand and clear water will be added, mixing and stirring without in seam self-leveling cement dry-mix, obtained without seam self-leveling cement grinding stone mortar.
Further, the order number of described color sand is 10 ~ 40 orders.
Further, mixing machine described in step S2 is vertical dry powder blender.
Further, in step S3, mix and blend adopts the agravic mixing and blending machine of round trip flight cutter.
Further, the add-on of clear water described in step S4 is 16 ~ 20% without seam self-leveling cement dry-mix weight.
In the present invention, the interpolation of gypsum plays vital impact for the ratio of shrinkage swelling in self-leveling cement grinding stone ternary system and intensity, experiment shows: the selection of species of gypsum and addition directly can affect self-leveling cement grinding stone early late strength and ratio of shrinkage swelling, especially cause quality problems to causing terrace to ftracture after the construction of self-leveling cement grinding stone because size changing rate is excessive.
The present invention adopts and add the plaster of Paris in self-leveling cement grinding stone, the record of the plaster of Paris is not added in tradition terrazzo materials application, show through many experiments, the addition of 4-5% both met Self-leveling grinding stone cement early, late strength requirement, control to greatest extent simultaneously self-leveling cement grinding stone because of dilation coefficient excessive, after construction because of problems of crack that size changing rate causes greatly.
Add aluminosulfate cement in the present invention and have no precedent record in the application of conventional cement grinding stone.It is early strong that aluminosulfate cement has early solidifying quick-drying, and the characteristic of microdilatancy, terrazzo intensity reached the requirement that can polish in 24 hours.The microdilatancy system of simultaneously arranging in pairs or groups with the plaster of Paris, makes the rate of expand to shrink of terrazzo little, and having stopped ftractures occurs, and achieves big area jointless construction.
Of the present invention is the high-new environmental protection floor product of a kind of high in technological content, the sport technique segment more complicated that self-leveling cement is combined with traditional terrazzo technique without seam self-leveling cement grinding stone.It is the cement powder mortar material being become to be grouped into by multiple high molecular reactive, and scene adds required color sand aggregate and mixes water, through fully stirring and can using.Slightly launch through scraper, high flat surfaces can be obtained.Setting rate is fast, can go up people's walking, can carry out surface finish polishing after 24 hours after 4-8 hour, have quick construction, easy be Traditional Man levelling incomparable.It is safe, pollution-free, attractive in appearance, rapid construction and coming into operation, and is the feature of self-leveling cement.Combine the advantage that wear-resisting withstand voltage anti-skidding, the color representation of terrazzo surface is abundant, improve the operational procedure of civilization, create the comfortable smooth space of high-quality.Seamless self-leveling cement grinding stone is of many uses, can be used for the various open space such as industrial premises, storage, market, exhibition room, gymnasium, hospital, school, airport, station, office etc., also for house, villa, warm little space etc.Can be used as facing surface layer, also can be used as wear-resisting basic unit.
The present invention has the following advantages: of the present invention high without seam self-leveling cement grinding stone pressure-proof and snap-resistent intensity, rate of expand to shrink is little, not easy to crack, surface abrasion resistance is high, 5-10mm thin layer construction excellent performance and quality stability good, simultaneously surface has the feature of natural granite color and spot; Preparation method without seam self-leveling cement grinding stone has simple to operate, easy to prepare, that cost is low characteristic, is applicable to industrialization scale operation.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, and protection scope of the present invention is not limited to the following stated.
Embodiment 1: a kind of without seam self-leveling cement grinding stone, it is made up of the raw material of following weight parts:
Without a preparation method for seam self-leveling cement grinding stone, it comprises the following steps:
S1. weigh: take each raw material by above-mentioned weight ratio, for subsequent use;
S2. mixed once: coarse whiting, the plaster of Paris, talcum powder, Mierocrystalline cellulose, water-soluble, dispersible rubber powder, water reducer, defoamer are dropped in vertical dry powder blender and carry out mixed once, the rotating speed of mixing machine is 1300rad/min, mixing time is 4min, is mixing masterbatch;
S3. two mixing: aluminosulfate cement, ordinary Portland cement, quartz sand are joined in the mixing masterbatch of step S2 gained, adopt the agravic mixing and blending machine of round trip flight cutter mix and blend 4min under 2300rad/min rotating speed, obtain without seam self-leveling cement mortar;
S4. three mixing: during site operation, will add color sand and clear water without in seam self-leveling cement dry-mix, the add-on of clear water is without seam self-leveling cement dry-mix weight 16%, mixing and stirring, obtained without seam self-leveling cement grinding stone mortar.
Embodiment 2: a kind of without seam self-leveling cement grinding stone, it is made up of the raw material of following weight parts:
Without a preparation method for seam self-leveling cement grinding stone, it comprises the following steps:
S1. weigh: take each raw material by above-mentioned weight ratio, for subsequent use;
S2. mixed once: coarse whiting, the plaster of Paris, talcum powder, Mierocrystalline cellulose, water-soluble, dispersible rubber powder, water reducer, defoamer are dropped in vertical dry powder blender and carry out mixed once, the rotating speed of mixing machine is 1700rad/min, mixing time is 8min, is mixing masterbatch;
S3. two mixing: aluminosulfate cement, ordinary Portland cement, quartz sand are joined in the mixing masterbatch of step S2 gained, adopt the agravic mixing and blending machine of round trip flight cutter mix and blend 8min under 2700rad/min rotating speed, obtain without seam self-leveling cement mortar;
S4. three mixing: during site operation, will add color sand and clear water without in seam self-leveling cement dry-mix, the add-on of clear water is without seam self-leveling cement dry-mix weight 20%, mixing and stirring, obtained without seam self-leveling cement grinding stone mortar.
Embodiment 3: a kind of without seam self-leveling cement grinding stone, it is made up of the raw material of following weight parts:
Without a preparation method for seam self-leveling cement grinding stone, it comprises the following steps:
S1. weigh: take each raw material by above-mentioned weight ratio, for subsequent use;
S2. mixed once: coarse whiting, the plaster of Paris, talcum powder, Mierocrystalline cellulose, water-soluble, dispersible rubber powder, water reducer, defoamer are dropped in vertical dry powder blender and carry out mixed once, the rotating speed of mixing machine is 1500rad/min, mixing time is 5min, is mixing masterbatch;
S3. two mixing: aluminosulfate cement, ordinary Portland cement, quartz sand are joined in the mixing masterbatch of step S2 gained, adopt the agravic mixing and blending machine of round trip flight cutter mix and blend 5min under 2500rad/min rotating speed, obtain without seam self-leveling cement mortar;
S4. three mixing: during site operation, will add color sand and clear water without in seam self-leveling cement dry-mix, the add-on of clear water is without seam self-leveling cement dry-mix weight 17%, mixing and stirring, obtained without seam self-leveling cement grinding stone mortar.
Embodiment 4: a kind of without seam self-leveling cement grinding stone, it is made up of the raw material of following weight parts:
Without a preparation method for seam self-leveling cement grinding stone, it comprises the following steps:
S1. weigh: take each raw material by above-mentioned weight ratio, for subsequent use;
S2. mixed once: coarse whiting, the plaster of Paris, talcum powder, Mierocrystalline cellulose, water-soluble, dispersible rubber powder, water reducer, defoamer are dropped in vertical dry powder blender and carry out mixed once, the rotating speed of mixing machine is 1600rad/min, mixing time is 7min, is mixing masterbatch;
S3. two mixing: aluminosulfate cement, ordinary Portland cement, quartz sand are joined in the mixing masterbatch of step S2 gained, adopt the agravic mixing and blending machine of round trip flight cutter mix and blend 7min under 2600rad/min rotating speed, obtain without seam self-leveling cement mortar;
S4. three mixing: during site operation, will add color sand and clear water without in seam self-leveling cement dry-mix, the add-on of clear water is without seam self-leveling cement dry-mix weight 18%, mixing and stirring, obtained without seam self-leveling cement grinding stone mortar.
Below by way of description of test beneficial effect of the present invention:
Test the performance without seam self-leveling cement grinding stone prepared by above-described embodiment 1-4, test result is as shown in table 1.Table 1: without the performance test results of seam self-leveling cement grinding stone
Claims (7)
1. without a seam self-leveling cement grinding stone, it is characterized in that, it is made up of the raw material of following weight parts:
Aluminosulfate cement: 15 ~ 25; Ordinary Portland cement: 10 ~ 20;
Coarse whiting: 5 ~ 10; The plaster of Paris: 4 ~ 5;
Talcum powder: 1 ~ 2; Mierocrystalline cellulose: 0.3 ~ 0.7;
Water-soluble, dispersible rubber powder: 0.8 ~ 1; Water reducer: 0.5 ~ 0.8;
Defoamer: 0.8 ~ 1.5; Quartz sand: 35 ~ 45
Color sand: 25 ~ 35.
2. as claimed in claim 1 a kind of without seam self-leveling cement grinding stone, it is characterized in that, the order number of described quartz sand is 40 ~ 120 orders.
3. a kind of preparation method without seam self-leveling cement grinding stone as claimed in claim 1 or 2, it is characterized in that, it comprises the following steps:
S1. weigh: take each raw material by above-mentioned weight ratio, for subsequent use;
S2. mixed once: coarse whiting, the plaster of Paris, talcum powder, Mierocrystalline cellulose, water-soluble, dispersible rubber powder, water reducer, defoamer are dropped in mixing machine and carry out mixed once, the rotating speed of mixing machine is 1300 ~ 1700rad/min, mixing time is 4 ~ 8min, is mixing masterbatch;
S3. two mixing: aluminosulfate cement, ordinary Portland cement, quartz sand are joined in the mixing masterbatch of step S2 gained, mix and blend 4 ~ 8min under 2300 ~ 2700rad/min rotating speed, obtain without seam self-leveling cement dry-mix;
S4. three mixing: during site operation, color sand and clear water will be added, mixing and stirring without in seam self-leveling cement dry-mix, obtained without seam self-leveling cement grinding stone mortar.
4. a kind of preparation method without seam self-leveling cement grinding stone as claimed in claim 3, is characterized in that, the order number of described color sand is 10 ~ 40 orders.
5. a kind of preparation method without seam self-leveling cement grinding stone as claimed in claim 3, is characterized in that, mixing machine described in step S2 is vertical dry powder blender.
6. a kind of preparation method without seam self-leveling cement grinding stone as claimed in claim 3, is characterized in that, in step S3, mix and blend adopts the agravic mixing and blending machine of round trip flight cutter.
7. a kind of preparation method without seam self-leveling cement grinding stone as claimed in claim 3, is characterized in that, the add-on of clear water described in step S4 is without seam self-leveling cement dry-mix weight 16 ~ 20%.
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| CN107382224A (en) * | 2017-07-14 | 2017-11-24 | 宿州典跃新型建筑材料有限公司 | A kind of macromolecule modified cement fund grinding stone |
| CN107502016A (en) * | 2017-09-29 | 2017-12-22 | 佛山市涂无忧建材有限公司 | A kind of rigid anti-cracking waterproof loss circulation material and its preparation and application |
| CN109456022A (en) * | 2019-01-07 | 2019-03-12 | 东莞市康之美建材科技有限公司 | A kind of integral seamless water mill stone material |
| CN111302714A (en) * | 2020-03-20 | 2020-06-19 | 卢亚涛 | Integrated grinding stone and preparation method thereof |
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| KR20080032925A (en) * | 2006-10-11 | 2008-04-16 | 주식회사 금륜 | High compressive strength waterproof mortar composite using bottom ashes |
| CN101555106A (en) * | 2009-04-03 | 2009-10-14 | 汕头经济特区龙湖科技有限公司 | Composite cementitious material and ground self-leveling mortar using same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107382224A (en) * | 2017-07-14 | 2017-11-24 | 宿州典跃新型建筑材料有限公司 | A kind of macromolecule modified cement fund grinding stone |
| CN107382224B (en) * | 2017-07-14 | 2020-12-01 | 宿州典跃新型建筑材料有限公司 | Polymer modified cement-based gold millstone |
| CN107502016A (en) * | 2017-09-29 | 2017-12-22 | 佛山市涂无忧建材有限公司 | A kind of rigid anti-cracking waterproof loss circulation material and its preparation and application |
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| CN111302714A (en) * | 2020-03-20 | 2020-06-19 | 卢亚涛 | Integrated grinding stone and preparation method thereof |
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Application publication date: 20151118 |
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