CN105399360A - Thickening powder and dry-mixed mortar containing same - Google Patents
Thickening powder and dry-mixed mortar containing same Download PDFInfo
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- CN105399360A CN105399360A CN201510756216.5A CN201510756216A CN105399360A CN 105399360 A CN105399360 A CN 105399360A CN 201510756216 A CN201510756216 A CN 201510756216A CN 105399360 A CN105399360 A CN 105399360A
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- Prior art keywords
- dry
- mix
- densification
- ether
- powder
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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
- 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
- C04B40/0042—Powdery mixtures
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses thickening powder comprising the following components in percentage by weight: 1-80% of attapulgite, 1-80% of sepiolite powder, 0.5-10% of cellulose ether, 0.5-20% of a surfactant and 0.2-10% of a super plasticizer. The invention also discloses a dry-mixed mortar containing the thickening powder. By using the thickening powder disclosed by the invention, the layering degree of the dry-mixed mortar after stirring can be reduced, the construction efficiency can be improved, the compression strength, the bonding strength and the permeability resistance of the mortar can be greatly improved, and then the probability of cracking and hollowing of the mortar is reduced.
Description
Technical field
The present invention relates to a kind of densification powder and the dry-mix containing densification powder, belong to building material technical field.
Background technology
Dry-mix refers to that drying sieves a kind of particulate state or the powdery that aggregate, inorganic coagulation material and the additive etc. that process carry out physical mixed by a certain percentage, and add water the material that can directly use after mixing and stirring.
At present wilkinite for the production of the main raw material of the densification powder of the inorganic mineral class of dry-mix on the market.No matter be calcium-base bentonite or sodium bentonite, its water-retentivity, improve application property etc. and all show original, but to be dry contraction ratio comparatively large for its maximum shortcoming, this does contraction for cement is deformation in the same way, strengthens each other, is more prone to cause mortar to ftracture.
Summary of the invention
The technical issues that need to address of the present invention are, a kind of densification powder and the dry-mix containing densification powder are provided, the present invention can not only reduce the delamination degree after dry-mix stirring, improve operating efficiency, and have larger lifting to the ultimate compression strength of mortar, cohesive strength and impermeability, and then reduce the probability that cracking and hollowing appear in mortar.
Technical scheme of the present invention is: a kind of densification powder, comprises attapulgite, sepiolite powder, ether of cellulose, tensio-active agent and superplasticizer, and the weight percent of each component is as follows:
Preferably, the weight percent of each component is:
Preferably, the weight percent of each component is:
Attapulgite: 44%;
Sepiolite powder: 50%;
Ether of cellulose: 2.4%;
Tensio-active agent: 3%;
Superplasticizer: 0.6%;
Or:
Attapulgite: 60%;
Sepiolite powder: 32.2%;
Ether of cellulose: 1%;
Tensio-active agent: 6%;
Superplasticizer: 0.8%.
Preferably, described attapulgite apparent density is 1860kg/m3, and specific surface area is 450m2/g, and described sepiolite powder density is 1800kg/m3, and fineness is 200 order-320 orders.
Preferably, described ether of cellulose is in hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether or both mixtures, and the viscosity of described ether of cellulose is 40000mPa.s-200000mPa.s.
Preferably, described tensio-active agent is the one in sodium lauryl sulphate, sodium lignosulfonate and calcium lignin sulphonate; Or wherein two or more mixture.
Preferably, described superplasticizer is the one in naphthalene water reducer, melamine water reducing agent and high-efficiency water-reducing agent of poly-carboxylic acid; Or wherein two or more mixture.
In addition, the invention also discloses a kind of dry-mix containing this densification powder, the component of dry-mix comprises the densification powder in sand, cement, flyash and claim 1-7 described in any one.
Preferably, when described dry-mix is for building flour sand by laying bricks or stones, the volume of densification powder is the 3%-20% of dry-mix weight; When described dry-mix is motar, the volume of densification powder is the 10%-25% of dry-mix weight.
Preferably, described cement is south, Pinghu, Zhejiang cement, and described sand is medium sand, and fineness modulus is 2.5, and described flyash is secondary ash.
The beneficial effect of the technical program: main component is attapulgite and sepiolite powder, attapulgite is also known as polygorskite, be applied in the denseness that greatly can increase dry-mix in densification powder, anti-segregation and delamination resistance, sepiolite powder be a kind of tool layer chain-like structure containing Shuifu County's magnesium silicate clay mineral, shrinking percentage is low, plasticity-is good, specific surface is large, adsorptivity is strong, sepiolite powder has and can absorb a lot of water when running into water thus become softness, the water-retentivity of dry-mix can be strengthened, and once dry just hardening, very large benefit is had to the intensity increase of dry-mix, attapulgite and sepiolite powder are silicate minerals, after mixing, consistency is good, and the effect can also given play in each comfortable dry-mix, coordinate ether of cellulose, tensio-active agent, superplasticizer can reduce the delamination degree after dry-mix stirring, improve operating efficiency, and the ultimate compression strength to mortar, cohesive strength and impermeability have larger lifting, and then reduce the probability of mortar appearance cracking and hollowing, simultaneously, attapulgite and sepiolite powder are widely distributed at China's rich reserves, draw materials simple, production cost is low, there is high economic benefit.
Embodiment
Densification powder in the present invention, comprises attapulgite, sepiolite powder, ether of cellulose, tensio-active agent and superplasticizer, and the weight percent of each component is as follows:
Attapulgite also known as polygorskite, be a kind of tool chain laminate structure containing Shuifu County's magnesium silicate clay mineral.Its structure belongs to 2:1 type clay mineral, in each 2:1 unit structure layer, tetrahedron wafer angle is pushed up direction at a certain distance and is put upside down, form layers chain, there is positively charged ion interchangeability, water-absorbent, suspension and thixotropy, be applied in the denseness that greatly can increase dry-mix in densification powder, anti-segregation and delamination resistance.Sepiolite powder be a kind of tool layer chain-like structure containing Shuifu County's magnesium silicate clay mineral, shrinking percentage is low, and plasticity-is good, and specific surface is large, and adsorptivity is strong.Sepiolite powder can absorb a lot of water thus become softness when running into water, the water-retentivity of dry-mix can be strengthened, and once dry just hardening, very large benefit is had to the intensity increase of dry-mix, because sepiolite powder shrinking percentage is low, plasticity-is good, and attapulgite possesses the effect increasing denseness, both complement each other, attapulgite and sepiolite powder are silicate minerals simultaneously, molecular structure is similar, possesses good consistency, stir after mixing evenly, and these two kinds of mineral have larger reserves in China, draw materials simple, less expensive, there is high economic benefit.Preferably, described attapulgite apparent density is 1860kg/m3, and specific surface area is 450m2/g, and described sepiolite powder density is 1800kg/m3, and fineness is 200 order-320 orders, and its advantage is, both density difference are little, and during mixing, consistency is better.
Described ether of cellulose is hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether, the viscosity of described ether of cellulose is 40000mPa.s-200000mPa.s, Mierocrystalline cellulose then can be water-soluble after etherificate, dilute alkaline soln and organic solvent, and there is thermoplasticity, hydroxypropyl methyl cellulose ether possesses good water-retentivity, ethoxyl methyl cellulose ether, it is non-ionic celluloses ether, and be not polyelectrolyte, therefore when metal-salt or organic electrolyte exist, more stable in aqueous, and attapulgite and sepiolite powder are containing Shuifu County's magnesium silicate in the present embodiment, so meet this condition, after being uniformly mixed, stability is better.Described ether of cellulose can be also the mixture of both hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether, and the water-retentivity that hydroxypropyl methyl cellulose ether is good can promote ethoxyl methyl cellulose ether stability in aqueous.
Described tensio-active agent is the one in sodium lauryl sulphate, sodium lignosulfonate and calcium lignin sulphonate, and sodium lauryl sulphate is often used as anionic surfactant, emulsifying agent and whipping agent; Sodium lignosulfonate is also anionic surfactant, has very strong dispersive ability, is suitable for solid dispersal in water medium; Calcium lignin sulphonate, a kind of many component high-molecular polymers anion surfactant, its good stability, also good dispersive ability is possessed, used time also has both the effect of water reducer, certain tensio-active agent can be the mixture of in the middle of this three any two kinds, also can be the mixture that three mixes mutually, can play three kinds of effects of foaming, dispersion, water reducer.
Described superplasticizer is naphthalene water reducer, one in melamine water reducing agent and high-efficiency water-reducing agent of poly-carboxylic acid, three is water reducer, the more outstanding intensity increased dry-mix of melamine water reducing agent, high-efficiency water-reducing agent of poly-carboxylic acid be continue wooden calcium be the ordinary water-reducing agent of representative and the third generation high-performance water reducing agent that grows up after being the high efficiency water reducing agent of representative with naphthalene, it is collection diminishing, guarantor is collapsed, strengthen, the serial water reducer with premium properties such as anti-shrinkage and environmental protection, volume is low, water-reducing rate is high, when volume is about 1.0%, water-reducing rate is more than 35%, so superplasticizer can be the mixture of in the middle of this three any two kinds, also can be the mixture that three mixes mutually, high-efficiency water-reducing agent of poly-carboxylic acid can with naphthalene water reducer, melamine water reducing agent cooperation uses, can not only control cost, and water-reducing effect is obvious, and the water-retentivity of attapulgite own and sepiolite powder is just relatively good, coordinate these three kinds of superplasticizer water-reducing effects better.
As preferably, each component ratio can limit as follows:
Specific embodiment of the present invention is exemplified below:
Wherein, ether of cellulose selects the ethoxyl methyl cellulose ether of 75000mPa.s, and superplasticizer selects high-efficiency water-reducing agent of poly-carboxylic acid, becomes 5 groups, i.e. 5 embodiments by the different weight percent proportioning of component, the weight percent such as table 1 of the component of 5 embodiments:
Table 1
The invention also discloses a kind of dry-mix containing densification powder, the component of dry-mix comprises sand, cement, flyash and densification powder mentioned above, different according to the purposes of dry-mix, by controlling to realize to the amount of densification powder, when described dry-mix is for building flour sand by laying bricks or stones, the volume of densification powder is the 3%-20% of dry-mix weight; When described dry-mix is motar, the volume of densification powder is the 10%-25% of dry-mix weight.
The specific embodiment of dry-mix is as table 2:
| Sand | Cement | Flyash | Densification powder | |
| Per-cent | 75.5 | 12.3 | 9.2 | 3 |
Table 2
Described cement is south, Pinghu, Zhejiang cement, and specification is PC32.5 cement, and described sand is medium sand, and fineness modulus is 2.5, and described flyash is secondary ash.
In the embodiment of dry-mix, 5 embodiments before densification powder can adopt, technique is as follows: put into after mechanical stirring equipment stirs by the densification powder of 5 embodiments in table 1 respectively by respective per-cent, become 5 groups of densification powder finished products, then these 5 groups of densification powders are stirred into 5 groups of dry-mix by the per-cent in table 2, add water during stirring and form dry-mix finished product, amount of water is 17% of dry-mix total mass.
Detect by GB/T25181-2010 " premixing mortar ", the test result of 5 groups of dry-mix finished products is in table 3:
Table 3
Can be drawn by table 3, the Water-saving effect of first group is best, anti-splitting effect is good, the 28d ultimate compression strength of second group is best, and the 7d ultimate compression strength of the 3rd group is best, and every test result of the 4th group is all comparatively average, good combination property, and the denseness of the 5th group is the highest, be suitable for the dry-mix high to desired consistency, such as motar.
Claims (10)
1. a densification powder, is characterized in that: comprise attapulgite, sepiolite powder, ether of cellulose, tensio-active agent and superplasticizer, and the weight percent of each component is as follows:
2. a kind of densification powder according to claim 1, is characterized in that: the weight percent of each component is:
3. a kind of densification powder according to claim 2, is characterized in that: the weight percent of each component is: attapulgite: 44%;
Sepiolite powder: 50%;
Ether of cellulose: 2.4%;
Tensio-active agent: 3%;
Superplasticizer: 0.6%;
Or:
Attapulgite: 60%;
Sepiolite powder: 32.2%;
Ether of cellulose: 1%;
Tensio-active agent: 6%;
Superplasticizer: 0.8%.
4. a kind of densification powder according to claim 1, is characterized in that: described attapulgite apparent density is 1860kg/m3, and specific surface area is 450m2/g, and described sepiolite powder density is 1800kg/m3, and fineness is 200 order-320 orders.
5. a kind of densification powder according to claim 1, is characterized in that: described ether of cellulose is hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether or both mixtures, and the viscosity of described ether of cellulose is 40000mPa.s-200000mPa.s.
6. a kind of densification powder according to claim 1, is characterized in that: described tensio-active agent is the one in sodium lauryl sulphate, sodium lignosulfonate and calcium lignin sulphonate; Or wherein two or more mixture.
7. a kind of densification powder according to claim 1, is characterized in that: described superplasticizer is the one in naphthalene water reducer, melamine water reducing agent and high-efficiency water-reducing agent of poly-carboxylic acid; Or wherein two or more mixture.
8., containing a dry-mix for densification powder, it is characterized in that: the component of dry-mix comprises the densification powder in sand, cement, flyash and claim 1-7 described in any one.
9. a kind of dry-mix containing densification powder according to claim 8, it is characterized in that: when described dry-mix is for building flour sand by laying bricks or stones, the volume of densification powder is the 3%-20% of dry-mix weight; When described dry-mix is motar, the volume of densification powder is the 10%-25% of dry-mix weight.
10. a kind of dry-mix containing densification powder according to claim 8, is characterized in that: described cement is south, Pinghu, Zhejiang cement, and described sand is medium sand, and fineness modulus is 2.5, and described flyash is secondary ash.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510756216.5A CN105399360A (en) | 2015-11-09 | 2015-11-09 | Thickening powder and dry-mixed mortar containing same |
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| CN201510756216.5A CN105399360A (en) | 2015-11-09 | 2015-11-09 | Thickening powder and dry-mixed mortar containing same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565131A (en) * | 2016-11-11 | 2017-04-19 | 上海漕源新型建材有限公司 | Environment-friendly mortar thickening powder and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101987929A (en) * | 2009-08-06 | 2011-03-23 | 中国科学院兰州化学物理研究所 | Attapulgite clay suspension agent |
| CN102491709A (en) * | 2011-12-02 | 2012-06-13 | 南京工业大学 | Cement-based polymer waterproof mortar and preparation method thereof |
| CN104973830A (en) * | 2014-04-11 | 2015-10-14 | 舟山市汇邦建材有限公司 | Concrete dry-mixing mortar and preparation method thereof |
-
2015
- 2015-11-09 CN CN201510756216.5A patent/CN105399360A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101987929A (en) * | 2009-08-06 | 2011-03-23 | 中国科学院兰州化学物理研究所 | Attapulgite clay suspension agent |
| CN102491709A (en) * | 2011-12-02 | 2012-06-13 | 南京工业大学 | Cement-based polymer waterproof mortar and preparation method thereof |
| CN104973830A (en) * | 2014-04-11 | 2015-10-14 | 舟山市汇邦建材有限公司 | Concrete dry-mixing mortar and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565131A (en) * | 2016-11-11 | 2017-04-19 | 上海漕源新型建材有限公司 | Environment-friendly mortar thickening powder and preparation method thereof |
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Application publication date: 20160316 |