CN104016633B - A kind of exterior wall colored finish mortar and preparation method thereof - Google Patents
A kind of exterior wall colored finish mortar and preparation method thereof Download PDFInfo
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- CN104016633B CN104016633B CN201410235974.8A CN201410235974A CN104016633B CN 104016633 B CN104016633 B CN 104016633B CN 201410235974 A CN201410235974 A CN 201410235974A CN 104016633 B CN104016633 B CN 104016633B
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Abstract
The present invention relates to a kind of material of construction, specifically relate to a kind of exterior wall colored finish mortar and preparation method thereof.This facing mortar is made up of the raw material of following weight percent meter: white cement 20% ~ 30%, quartz sand 50% ~ 60%, chopped strand 0.1% ~ 0.5%, water-ground limestone 10% ~ 20%, latex powder 0.2% ~ 1%, ether of cellulose 0.3% ~ 0.5%, mineral dye 1% ~ 5%, hydrophober 0.2% ~ 0.4%, flyash 5% ~ 10%, defoamer 0.1% ~ 0.15%, metakaolin 1% ~ 3%, thixotropic lubricant 0.2% ~ 0.5%, water reducer 1% ~ 2%.Exterior wall colored finish mortar in the present invention has cracking resistance, weather-proof, good ultraviolet resistance, uniform color lasting and alkali burnout resistance can wait advantage well, can be combined well with various inorganic bottom layer material, its coating compactness is good, can be widely used in the building fields such as decoration of exterior wall.
Description
Technical field
The present invention relates to a kind of material of construction, specifically relate to a kind of exterior wall colored finish mortar and preparation method thereof.
Background technology
Facing mortar refers to that the aggregate (as quartz sand), inorganic coagulation material (as white cement), additive (as polymkeric substance, mineral dye) etc. of drying screening process carry out a kind of particulate state or the powdery of physical mixed by a certain percentage, be transported to building site with form packed or in bulk, add water the material that can directly use after mixing and stirring.Facing mortar color category is many, is generally used for surface of wall, does decorating inner and external walls, is applicable to the exterior wall finish of high-grade building and villa and public place of entertainment, dining room lamp personalized metope external thermal insulation system finish(ing) coat.
Facing mortar is compared with conventional finishing material, and its advantage is:
1), compared with the facing of the organic materialss such as coating, facing mortar and outer heat preservation system have better matching and consistency.
2), compared with tile decorative surface, facing mortar layer thickness is little, and quality is light, during as Highrise buildings finish coat, can not occur falling brick phenomenon because of problems such as negative blast.
But existing facing mortar also exists the accumulation of salt in the surface soil, aberration and problems of crack.No matter be the accumulation of salt in the surface soil or aberration, its essence is that hydrolysis product of cement calcium hydroxide migrates to the result on surface.Cement (comprising silicate cement, low alkali aluminate cement and low alkali aluminosulfate cement) hydrated product has calcium hydroxide or soluble salt, calcium hydroxide (or soluble salt) is along with moisture is to surface transport, the speed of migration under varying environment (comprising temperature, humidity, wind speed etc.) is different, the amount arriving the calcium hydroxide on surface is also different, will cause aberration; If local migration is very large to the calcium hydroxide amount on surface, is exactly the so-called accumulation of salt in the surface soil.
The accumulation of salt in the surface soil and aberration have had a strong impact on the Integral decoration effect of facing mortar, and the visual appearance of facing mortar is declined, and cracking not only have impact on the overall aesthetics of whole facing, also have impact on the consolidation effect of facing place metope, therefore urgently improves.
Summary of the invention
For problems of the prior art, an object of the present invention is to provide a kind of exterior wall colored finish mortar, and this exterior wall colored finish mortar has cracking resistance, weather-proof, good ultraviolet resistance, uniform color lasting and alkali burnout resistance can wait advantage well.
For achieving the above object, present invention employs following technical scheme:
A kind of exterior wall colored finish mortar, it is made up of the raw material of following weight percent meter:
White cement 20% ~ 30%, quartz sand 50% ~ 60%, chopped strand 0.1% ~ 0.5%, water-ground limestone 10% ~ 20%, latex powder 0.2% ~ 1%, ether of cellulose 0.3% ~ 0.5%, mineral dye 1% ~ 5%, hydrophober 0.2% ~ 0.4%, flyash 5% ~ 10%, defoamer 0.1% ~ 0.15%, metakaolin 1% ~ 3%, thixotropic lubricant 0.2% ~ 0.5%, water reducer 1% ~ 2%.
Preferably, the weight percent of described each raw material is as follows: white cement 20%, quartz sand 58%, chopped strand 0.4%, water-ground limestone 10%, latex powder 1%, ether of cellulose 0.1%, mineral dye 1%, hydrophober 0.2%, flyash 5%, defoamer 0.1%, metakaolin 3%, thixotropic lubricant 0.2%, water reducer 1%.
Preferably, described chopped strand is basalt chopped fiber, and its filament diameter is 9 ~ 18 μm, and chopped length is 5 ~ 15mm.
Preferably, described water-ground limestone is 350 ~ 500 object water-ground limestones.
Preferably, described latex powder is the multipolymer of two or three in vinyl acetate, ethene and vinylformic acid.
Preferably, described ether of cellulose is one or both in methyl cellulose ether, hydroxypropylcelluloether ether, hydroxypropyl starch ether, hydroxymethyl starch ether.
Preferably, described hydrophober is modified organic silicon class hydrophober, and described water reducer is high-efficiency water-reducing agent of poly-carboxylic acid.
Preferably, described flyash is 200 ~ 500 object flyash; Described defoamer is 400 ~ 800 object organosilicon powders.
Preferably, described thixotropic lubricant is natural Li-montmorillonite, 602# thixotropic lubricant, 987# thixotropic lubricant or 1008# thixotropic lubricant.
Two of object of the present invention is to provide a kind of preparation method of above-mentioned exterior wall colored finish mortar, each dry powder raw material is added in agitator according to its weight percent and stirs 10 ~ 15 minutes, after mixing, and obtained dry-powder color facing mortar, for subsequent use.Take a certain amount of dry-powder color facing mortar, water is poured in agitation vat, under planetary cement mortar mixer stirring at low speed, be slowly sprinkled into dry powder, stir 15s, take out paddle, in 60s, clear up the mortar on paddle and agitation vat wall, be reentered into paddle, stir 75s, complete.
Beneficial effect of the present invention is as follows:
1), basalt fibre, be adopt pure natural volcanics (alumina magnesia silicate) raw material, respectively with flame furnace, all-electric melting furnace is gentle is electrically coupled stove, with the high-performance fiber of " single stage method " explained hereafter.It is a kind of Green Product of pure natural, has the excellent properties such as acid and alkali-resistance, waterproof, fire prevention, radioprotective, heat transfer coefficient be low.
Because facing mortar requires initial stage dry flawless, the present invention by creatively adding basalt chopped fiber, thus improves the compactness of mortar, and effectively improves its resistance to cleavage.Meanwhile, the filament diameter of preferred described basalt chopped fiber is 9 ~ 18 μm, and chopped length is 5 ~ 15mm.When the filament diameter of basalt chopped fiber be less than 9 μm and chopped length is less than 5mm time, because length is too short, the resistance to cleavage that it plays embodies not obvious; When the filament diameter of basalt chopped fiber be greater than 18 μm and chopped length is greater than 15mm time, facing mortar cannot realize dispersed in being uniformly mixed, thus easily cause the appearance of facing mortar aberration, affect product quality.
2) water-ground limestone, in the present invention and metakaolin, as mineral filler, play cohesive action, not only can reduce costs, can also increase the compactness of product, toughness and intensity in facing mortar.Because mortar compactness is improved, the hole of mortar inside is also reduced, thus restrained effectively facing mortar and occur the accumulation of salt in the surface soil, and the mechanical property of facing mortar also increases simultaneously simultaneously.
Facing mortar color and luster requires higher, and this just requires that some raw-material particle diameters are little.Water-ground limestone in the present invention is particle diameter is 350 ~ 500 orders, can be mixedly more even, therefore, it is possible to effectively avoid the appearance of aberration.
3) latex powder, in the present invention mainly plays water conservation and strengthens toughness, and cement crosses rapid hardening, drying and cracking phenomena to prevent facing mortar from occurring.
4) starch ethers, in the present invention, mainly as thickening material, improves the sag resistance of mortar, reduces the tackiness of wet mortar, extends the open hour etc.Applying starch ether in mortar simultaneously, obviously can reduce the formulation cost of mortar.
5) defoamer, in the present invention can be restrained the formation of foam and destroy established foam in mortar.Its mechanism of action is: defoamer enters liquid film, reduces the viscosity of liquid, and form new low surface viscosity interface, liquid film is followed the string, and what accelerate liquid oozes out process, finally makes thinning of liquid film and breaks.Theoretically, increased air bubble can affect the physicals of mortar self, mortar voids rate is increased, reduces the self-strength of mortar.Especially to the mortar product having waterproof generic request, carry out pressing down bubble to mortar and froth breaking becomes inevitable.
6) hydrophober, in the present invention not only can improve the water resistance of facing mortar, and later stage rainwater effectively can be avoided to enter mortar and cause soluble salt to move to mortar surface with water forming the accumulation of salt in the surface soil.
7) Main Function of the thixotropic lubricant, in the present invention is the lubricity improving mortar, and modified mortar is more easily constructed
8) mineral dye, in the present invention can make facing mortar have abundant color, and then is better applied to decoration of exterior wall.In process of production, according to the color needs of facing mortar, the iron oxide pigment of different color can be added.Preferably, described mineral dye is iron oxide pigment, and iron oxide pigment color category is many, belong to inorganics, and the main raw material(s) of facing mortar is inorganic silicate and silica sand, iron oxide pigment can be blended in mortar effectively, make facing mortar fast in colour, do not come off.
9) the exterior wall colored finish mortar, in the present invention has cracking resistance, weather-proof, good ultraviolet resistance, uniform color lasting and alkali burnout resistance can wait advantage well, can be combined well with various inorganic bottom layer material, its coating compactness is good, can be widely used in the building fields such as decoration of exterior wall.
Embodiment
Below by specific embodiment, the present invention will be further described, and all raw materials all come from market or prepare according to prior art.
Embodiment 1:
A kind of exterior wall colored finish mortar, its feed composition proportioning (weight percent) is:
Normal silicate white cement: 20%,
Quartz sand: 58%,
Basalt chopped fiber (filament diameter 13 μm, chopped length is 6mm): 0.4%,
Water-ground limestone: 10%,
Vinyl acetate and ethylene copolymer rubber powder: 1%,
Methyl cellulose ether: 0.1%,
Red iron oxide: 1%,
Modified organic silicon class hydrophober 0.2%,
Flyash 5%,
Organosilicon powder 0.1%,
Metakaolin 3%,
Natural Li-montmorillonite: 0.2%,
Water reducer 1%.
Each feed composition is dropped in agitator according to the above ratio and stirs, can pack.The colored mortar of preparation is when constructing, and mortar mixes according to mass ratio 4:1 with water, and stirs, and adopts spraying or roller applications construction at wall face.According to People's Republic of China's building material industry standard (JC/T1024-2007), this exterior wall colored finish mortar and preparation method thereof is detected, find that this exterior wall colored finish mortar and preparation method thereof and body of wall have good tensile bond strength (> 0.68Mpa), hydrophobicity performance good (water regain of 240min is all less than 2.0g), compared with common facing mortar, its weather resistance and resistance to cleavage better.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (8)
1. an exterior wall colored finish mortar, is characterized in that: the weight percent of each raw material is as follows:
White cement 20%, quartz sand 58%, chopped strand 0.4%, water-ground limestone 10%, latex powder 1%, ether of cellulose 0.1%, mineral dye 1%, hydrophober 0.2%, flyash 5%, defoamer 0.1%, metakaolin 3%, thixotropic lubricant 0.2%, water reducer 1%;
Described chopped strand is basalt chopped fiber, and its filament diameter is 9 ~ 18 μm, and chopped strand length is 5 ~ 15mm.
2. exterior wall colored finish mortar according to claim 1, is characterized in that: described water-ground limestone is 350 ~ 500 object water-ground limestones.
3. exterior wall colored finish mortar according to claim 1, is characterized in that: described latex powder is the multipolymer of two or three in vinyl acetate, ethene and vinylformic acid.
4. exterior wall colored finish mortar according to claim 1, is characterized in that: described ether of cellulose is one or both in methyl cellulose ether, hydroxypropylcelluloether ether, hydroxypropyl starch ether, hydroxymethyl starch ether.
5. exterior wall colored finish mortar according to claim 1, is characterized in that: described hydrophober is modified organic silicon class hydrophober, and described water reducer is high-efficiency water-reducing agent of poly-carboxylic acid.
6. exterior wall colored finish mortar according to claim 1, is characterized in that: described flyash is 200 ~ 500 object flyash; Described defoamer is 400 ~ 800 object organosilicon powders.
7. exterior wall colored finish mortar according to claim 1, is characterized in that: described thixotropic lubricant is natural Li-montmorillonite, 602# thixotropic lubricant, 987# thixotropic lubricant or 1008# thixotropic lubricant.
8. prepare a preparation method for exterior wall colored finish mortar as claimed in claim 1, it is characterized in that: each dry powder raw material is added in agitator according to its weight percent and stirs 10 ~ 15 minutes, after mixing, obtained dry-powder color facing mortar, for subsequent use; Take a certain amount of dry-powder color facing mortar, water is poured in agitation vat, under planetary cement mortar mixer stirring at low speed, be slowly sprinkled into dry powder, stir 15s, take out paddle, in 60s, clear up the mortar on paddle and agitation vat wall, be reentered into paddle, stir 75s, complete.
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| CN201410235974.8A CN104016633B (en) | 2014-05-29 | 2014-05-29 | A kind of exterior wall colored finish mortar and preparation method thereof |
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| CN104016633B true CN104016633B (en) | 2016-04-20 |
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