CN107619245A - A kind of surfacing self-leveling floor mortar and its construction method - Google Patents
A kind of surfacing self-leveling floor mortar and its construction method Download PDFInfo
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Abstract
The invention discloses a kind of surfacing self-leveling floor mortar and its construction method, the mortar includes the raw material components of following mass parts：200~240 parts of aluminate cement, 60~80 parts of white cement, 80~100 parts of semi-hydrated gypsum, 130~170 parts of coarse whiting, 400~420 parts of river sand of washing, 40~60 parts of redispersable latex powder, 0.7~1.0 part of water reducer, 1~1.5 part of defoamer, 0.5~0.8 part of cellulose ether, 0.8~1.2 part of retarder, 5~10 parts of pigment.Its construction method mainly includes the following steps that：1) plus water stirs；2) pouring molding；3) surface maintenance；4) surface post-processing.Surfacing self-leveling floor mortar early strength development in the present invention is fast, and later strength is higher, and surfacing is smooth, wearability is good, strong shock resistance, water-tolerant, feature and dicoration is had concurrently, suitable for indoor decorating.
Description
Technical field
The invention belongs to gravity flowing levelling mortar field, and in particular to a kind of surfacing self-leveling floor mortar and its construction method.
Background technology
Gravity flowing levelling mortar is one kind of feature building mortar, has bearing capacity and decoration functions.In use, according to rule
Fixed ratio of water to material adds water to stir, can levelling shape automatically by the high fluidity of mortar after machinery pumping or artificial construction
Into smooth plane, labour cost can be effectively reduced, improves efficiency of construction.
According to the difference of bearing requirements, gravity flowing levelling mortar can be divided into surfacing self-leveling floor material and bed course gravity flowing levelling mortar, and two
Person is typically used in combination.Wherein, the combination property of surfacing self-leveling floor mortar requires higher that laying depth is relatively thin.Cement base
The gelling system of gravity flowing levelling mortar is generally divided into two kinds：One kind is using portland cement as main coagulated material, aluminate cement
With ternary system of the gypsum as complementary binder materials, another kind is using aluminate cement as main coagulated material, silicate
The ternary system of cement and gypsum as complementary binder materials.Wherein, aluminate cement based self-leveling mortar, which has, condenses firmly
Change the features such as speed is fast, early stage and later strength are high, drying shrinkage is small, be suitable as surface layer, and Portland cement base is flow automatically
Flat mortar is typically used for bed course.
Surfacing self-leveling floor mortar is different from bed course gravity flowing levelling mortar, and bed course gravity flowing levelling mortar is often used as screed-coat, so
The up surface material such as laying floor brick, floor, carpet afterwards, is not contacted directly with air, is less prone to and is led because drying contraction
The cracking of cause.And surfacing self-leveling floor mortar directly contacts with air, and the impact and abrasion of traffic above-ground are directly born in surface.
The thinner thickness of surfacing self-leveling floor mortar, in the case where ground layer is solid, carries active force and be concentrated mainly on surface.Very
The destruction on more floor material surfaces, is not as that compression strength is inadequate, but flexibility and the wearability deficiency on surface, makes in opening
Phenomena such as with decortication, sand, pitted skin and cracking is shown soon.Therefore, it is face to improve crack resistance, wearability, impact resistance
The research and development technology difficult point of layer gravity flowing levelling mortar.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of surfacing self-leveling floor mortar and its construction party
Method, surfacing self-leveling floor mortar have early strength development soon, and later strength is higher, and surfacing is smooth, wearability is good, shock resistance
The features such as ability is strong, water-tolerant.
Specifically, on the one hand, the invention provides a kind of surfacing self-leveling floor mortar, the mortar includes the original of following mass parts
Expect component：200~240 parts of aluminate cement, 60~80 parts of white cement, 80~100 parts of semi-hydrated gypsum, 130~170 parts of coarse whiting,
Wash 400~420 parts of river sand, 40~60 parts of redispersable latex powder, 0.7~1.0 part of water reducer, 1~1.5 part of defoamer, fibre
Tie up plain 0.5~0.8 part of ether, 0.8~1.2 part of retarder, 5~10 parts of pigment.
The surfacing self-leveling floor mortar of the present invention, using aluminate cement as major gelled material, white cement and semi-hydrated gypsum are
Supplementary cementitious material, the characteristic of entringite is generated using reaction between three, compensation volume contraction and promotion can be played to mortar
The effect of early strength development；Be advantageous to the coloring of pigment using white cement.Each raw material components synergy of the present invention, is obtained
Surfacing self-leveling floor mortar early strength development it is fast, later strength is higher, and surfacing is smooth, wearability is good, shock resistance energy
Power is strong, water-tolerant.
Further, the aluminate cement is CA50 levels, and the white cement is 42.5 grades or 52.5 grades, the half water stone
Cream is alpha-semi water plaster stone.
Further, the mesh number of the coarse whiting is 400 mesh, whiteness >=90%.
Further, the washing river sand is mixed by two kinds of sand of 40~70 mesh and 70~140 mesh, both mass ratioes
For 1：0.6~1.7.
Further, the redispersable latex powder is by VAE and acrylate copolymer group
Into the mass ratio of VAE and acrylate copolymer is 1：0.25~0.54, vinylacetate-second
The glass transition temperature of alkene copolymer and acrylate copolymer is all higher than 10 DEG C.Add VAE
With acrylate copolymer rubber powder, the wearability of mortar can be effectively improved, reduces modulus of elasticity, acrylate copolymer has
The characteristics of cohesive force is strong, and water resistance is good, and VAE can effectively improve the wearability of mortar and water-fast
Property.
Further, the water reducer is polycarboxylic acids powder water reducer；The retarder is L (+)-tartaric acid；The fibre
It is hydroxypropyl methyl cellulose ether to tie up plain ether, viscosity 400mPa.s；The defoamer is organic silicon powder defoamer；It is described
Pigment is inorganic pigment.
Second aspect, the present invention also provide a kind of construction method of surfacing self-leveling floor mortar, and this method comprises the following steps：
(1) water is added to stir in mortar raw material so that the initial flow degree of mortar is 145 ± 3mm；
(2) mortar being stirred uniformly is cast on the base material for having been coated with interfacial agents, shakeout with tooth harrow auxiliary, then with disappearing
Bubble roller rolls around defoaming several times；
(3) after mortar final set in 30~60min, mortar surface is covered in plastic fresh-keeping membrane, sealed maintenance 20~
30h；
(4) after conserving, preservative film is removed, in the uniform brushing curing agent of mortar surface, it is laggard to spontaneously dry 24~48h
Row polishing and polishing.
In the construction method of the present invention, compared with general construction method, in 30~60min, used after mortar final set
Plastic fresh-keeping membrane is covered in mortar surface, carries out sealed maintenance.Preservative film can reduce the evaporation of mortar moisture, improve superficial water
The degree of hydration of mud, it is improved the compactness of mortar surface.Because the ternary gelling system based on aluminate cement is put
Hot speed is big, and Exotherm Time is concentrated.Plastic covering film can reduce scattering and disappearing for heat, promote the aquation of cement.
Further, in step (1), the water of addition is 0.20~0.22 with the mass ratio of mortar raw material：1.
Further, in step (4), the curing agent is osmosis type liquid organosilicon class curing agent.After maintenance, apply
Brush osmosis type liquid organosilicon class curing agent, after curing agent solidification, the hole of mortar surface is blocked, has improved the close of top layer
Reality.
Beneficial effects of the present invention are：
(1) the early strength development of surfacing self-leveling floor mortar of the invention is fast, and later strength is higher, surfacing is smooth,
Wearability is good, strong shock resistance, water-tolerant, feature and dicoration is had concurrently, suitable for indoor decorating.
(2) in the present invention, the 24h compression strength of surfacing self-leveling floor mortar is in 30MPa or so, and 28d compression strength is in 45MPa
Left and right, 28d contract with dry rate are less than 0.05g less than 0.04%, 28d abrasion loss, exceed well over Industry code requirements, fully meet indoor dress
Decorations finishing performance requirement.
Embodiment
Technical solution of the present invention is illustrated to be clearer, the skill below in conjunction with embodiment to the present invention
Art scheme is further elaborated：
In the specific embodiment of the present invention, the invention provides a kind of surfacing self-leveling floor mortar, the mortar
Include the raw material components of following mass parts：200~240 parts of aluminate cement, 60~80 parts of white cement, semi-hydrated gypsum 80~100
Part, 130~170 parts of coarse whiting, washing 400~420 parts of river sand, 40~60 parts of redispersable latex powder, 0.7~1.0 part of water reducer,
1~1.5 part of defoamer, 0.5~0.8 part of cellulose ether, 0.8~1.2 part of retarder, 5~10 parts of pigment.
For the surfacing self-leveling floor mortar using aluminate cement as major gelled material, white cement and semi-hydrated gypsum are auxiliary glue
Gel material, by adjusting the ratio between three, the characteristic of reaction generation entringite between three is given full play to, promotes intensity hair
Exhibition, drying shrinkage is reduced, while also ensure the growth of later strength.
The grade of the aluminate cement generally presses the Al in cement2O3Content is divided, and is divided into CA50, CA60, CA70
And CA80.Al in aluminate cement2O3Content is higher, and the hydration activity of aluminate cement is lower, i.e., intensity is lower, but high temperature resistant
Ability is stronger.Aluminate cement as the grade used in preferable, of the invention embodiment for CA50.
The white cement, substitute grey portland cement and applied in surfacing self-leveling floor mortar, be advantageous to the coloring of pigment.
Common model is divided into 32.5 grades, 42.5 grades and 52.5 grades by strength grade.Preferably, adopted in embodiment of the invention
With 42.5 grades or 52.5 grades, so that the performance of surfacing self-leveling floor mortar is more preferably.
The semi-hydrated gypsum is divided into alpha-semi water plaster stone and β-semi-hydrated gypsum by crystal habit, and β-semi-hydrated gypsum rate of dissolution is fast
In alpha-semi water plaster stone, and its surface is in loose structure, can increase the water consumption of mortar, and then causes the intensity decreases of mortar,
Contract with dry rate increases.Meanwhile the rate of dissolution of alpha-semi water plaster stone is more beneficial for binder materials far faster than anhydrous gypsum and dihydrate gypsum
The progress of hydration reaction, promote the strength development of mortar and reduce contract with dry rate.As preferable, of the invention embodiment
It is middle to use alpha-semi water plaster stone.
The coarse whiting common are 400 mesh, 800 mesh and 1250 mesh.As in preferable, of the invention embodiment
Using 400 mesh, the particle diameter of 400 mesh coarse whitings is less than 70~140 mesh sand, and is more than cement, so that in surfacing self-leveling floor sand
In slurry, the relation of particle size is sand ＞ coarse whiting ＞ cement, forms continuous grading, so further improve mortar intensity,
The performances such as workability.Meanwhile the whiteness of coarse whiting can further improve the coloring of pigment more than 90%.
The sand for being commonly used in gravity flowing levelling mortar is generally 70~140 mesh, and in another specific implementation of the present invention
In mode, as preferable, the washing river sand includes two kinds of sand of 40~70 mesh and 70~140 mesh.It is thick to fill 40~70 purposes
Sand can reduce mortar water consumption, improve the intensity of mortar.But when coarse sand volume is too high, mortar mobility reduces, and secretes
Water.In addition, the grain shape of washing river sand is more round, there is ball effect, be advantageous to improve mortar mobility, and river sand quality is hard
Firmly, be advantageous to improve mortar strength.
As preferable, the redispersable latex powder is more than 10 DEG C of rigid rubber powder group by two kinds of glass transition temperatures
Into being VAE and acrylate copolymer respectively.The glass transition temperature of redispersable latex powder
Generally at -10 DEG C~20 DEG C, glass transition temperature is higher, and flexible lower, cohesive force and cohesive force are stronger.Acrylic ester copolymer
The water resistance and adhesive property of thing are superior to VAE, and a part of vinylacetate-ethylene is substituted with it
Copolymer can further improve the wearability and water resistance of mortar.But due to acrylate copolymer and vinylacetate-second
Alkene copolymer is compared, and shows certain hydrophobicity, easily produces bubble during being dissolved in water, therefore its dosage should not mistake
It is more.Turned in the embodiment of the present invention using the vitrifying of VAE and acrylate copolymer
Temperature is respectively 16 DEG C and 13 DEG C, and both mass ratioes are 1:0.25~0.54.
The water reducer is polycarboxylic acids powder water reducer；The retarder is L (+)-tartaric acid.Polycarboxylic acids powder water reducer
With other retarder, such as boric acid, citric acid, sodium gluconate, compatibility is relatively poor, and L (+)-tartaric acid retarding effect is good,
Good with polycarboxylate water-reducer compatibility, the two can produce cooperative effect, can improve the fluidity of mortar, extend setting time.
The cellulose ether is hydroxypropyl methyl cellulose ether (HPMC), viscosity 400mPa.s；The defoamer is to have
Machine silicon class powder defoamer.Defoamer is broadly divided into mineral oils and organic silicon by chemical constituent, and wherein organic silicon defoams
The defoaming of agent and suds ability are stronger, and organic silicon defoamer is used in embodiment of the invention.
The construction method of the surfacing self-leveling floor mortar comprises the following steps：
(1) in mortar raw material plus water stir so that the initial flow degree of mortar be 145 ± 3mm (gravity flowing levelling mortar
Fluidity is weighed with the divergence of mortar.According to testing standard, mortar is poured into the tubulose test mould of given size
In, then lift, mortar flows freely, and spreads into circle out, circular diameter is fluidity)；
(2) mortar being stirred uniformly is cast on the base material for having been coated with interfacial agents, shakeout with tooth harrow auxiliary, then with disappearing
Bubble roller rolls around defoaming several times；
(3) after mortar final set in 30~60min, mortar surface is covered in plastic fresh-keeping membrane, sealed maintenance 20~
30h；
(4) after conserving, preservative film is removed, in the uniform brushing curing agent of mortar surface, it is laggard to spontaneously dry 24~48h
Row polishing and polishing.
In step (1), the mass ratio of surfacing self-leveling floor mortar reclaimed water and raw material is 0.20~0.22：1.Surfacing self-leveling floor sand
The requirement starched to mechanical property is higher, on the basis of mobility is met, need to reduce water consumption as far as possible.Water is used according to the rules
Amount, adds water to stir so that the initial flow degree of mortar is 145 ± 3mm.The fluidity of gravity flowing levelling mortar is bigger, and isolation is heavy
Drop degree is bigger, and surface strength is lower；Fluidity is smaller, and viscosity is bigger, and application property is poorer, and the bubble on surface is then difficult to eliminate.
In step (3), in 30~60min, mortar surface is being covered in plastic fresh-keeping membrane, sealing is supported after mortar final set
Protect 20~30h.Preservative film can reduce the evaporation of mortar moisture, improve the degree of hydration of top layer cement, make the close of mortar surface
Solidity is improved, and then effectively improve wearability.And the ternary gelling system rate of heat release based on aluminate cement is big,
Exotherm Time is concentrated mainly on preceding 20h.Plastic covering film can reduce scattering and disappearing for heat, promote the aquation of cement.
In step (4), after maintenance, preservative film is removed, in the uniform brushing osmosis type liquid organosilicon class of mortar surface
Curing agent, usage amount are 0.2~0.3kg/m2.24~48h is spontaneously dried, after treating that mortar surface is completely dried, is polished
And polishing.After the solidification of osmosis type liquid organosilicon class curing agent, the transparent solid with certain elasticity is formd, and block
The hole of mortar surface, improve the density and elasticity on top layer.
Above-mentioned embodiment is further illustrated below by embodiment, but is not therefore limited the present invention to described
Scope of embodiments among.The experimental method of unreceipted actual conditions in the following example, conventionally and condition, or press
Selected according to catalogue.The reagent illustrated, raw material and instrument and equipment is not done can directly to buy by commercial sources.
Embodiment 1
A kind of surfacing self-leveling floor mortar includes the raw material components of following mass parts：200 parts of CA50 levels aluminate cement, 52.5
80 parts of white cement of level, 100 parts of alpha-semi water plaster stone, 170 parts of 400 mesh coarse whiting, 40~70 mesh washing, 200 parts of river sand, 70~140 mesh water
Wash 200 parts of river sand, 30 parts of VAE (16 DEG C of glass transition temperature), acrylate copolymer (glass
Change 13 DEG C of transition temperature) 10 parts, 0.7 part of water reducer, 1 part of defoamer, 0.8 part of cellulose ether, 1.2 parts of retarder, 5 parts of pigment.
Water material mass ratio is 0.21.
The construction method of the surfacing self-leveling floor mortar comprises the following steps：
(1) it is 0.21 by water material mass ratio：1, add water to stir so that the initial flow degree of mortar is 145 ± 3mm；
(2) mortar being stirred uniformly is cast on the base material for having been coated with interfacial agents, shakeout with tooth harrow auxiliary, then with disappearing
Bubble roller rolls around defoaming several times；
(3) 30min after mortar final set, mortar surface, sealed maintenance 20h are covered in plastic fresh-keeping membrane；
(4) after conserving, preservative film is removed, in the uniform brushing osmosis type liquid organosilicon class curing agent of mortar surface,
Usage amount is 0.2kg/m2；24h is spontaneously dried, after treating that mortar surface is completely dried, is polished and polishes.
Embodiment 2
A kind of surfacing self-leveling floor mortar includes the raw material components of following mass parts：220 parts of CA50 levels aluminate cement, 42.5
80 parts of white cement of level, 80 parts of alpha-semi water plaster stone, 160 parts of 400 mesh coarse whiting, 40~70 mesh washing, 250 parts of river sand, 70~140 mesh water
Wash 150 parts of river sand, 40 parts of VAE (16 DEG C of glass transition temperature), acrylate copolymer (glass
Change 13 DEG C of transition temperature) 10 parts, 0.8 part of water reducer, 1.2 parts of defoamer, 0.7 part of cellulose ether, 1 part of retarder, 5 parts of pigment.
The construction method of the surfacing self-leveling floor mortar comprises the following steps：
(1) it is 0.21 by water material mass ratio：1 adds water to stir so that the initial flow degree of mortar is 145 ± 3mm；
(2) mortar being stirred uniformly is cast on the base material for having been coated with interfacial agents, shakeout with tooth harrow auxiliary, then with disappearing
Bubble roller rolls around defoaming several times；
(3) 30min after mortar final set, mortar surface, sealed maintenance 24h are covered in plastic fresh-keeping membrane；
(4) after conserving, preservative film is removed, in the uniform brushing osmosis type liquid organosilicon class curing agent of mortar surface,
Usage amount is 0.2kg/m2；24h is spontaneously dried, after treating that mortar surface is completely dried, is polished and polishes.
Embodiment 3
A kind of surfacing self-leveling floor mortar includes the raw material components of following mass parts：240 parts of CA50 levels aluminate cement, 52.5
60 parts of white cement of level, 80 parts of alpha-semi water plaster stone, 165 parts of 400 mesh coarse whiting, 40~70 mesh washing, 150 parts of river sand, 70~140 mesh water
Wash 250 parts of river sand, 26 parts of VAE (16 DEG C of glass transition temperature), acrylate copolymer (glass
Change 13 DEG C of transition temperature) 14 parts, 0.7 part of water reducer, 1 part of defoamer, 0.7 part of cellulose ether, 0.8 part of retarder, 10 parts of pigment.
The construction method of the surfacing self-leveling floor mortar comprises the following steps：
(1) it is 0.20 by water material mass ratio：1, add water to stir so that the initial flow degree of mortar is 145 ± 3mm；
(2) mortar being stirred uniformly is cast on the base material for having been coated with interfacial agents, shakeout with tooth harrow auxiliary, then with disappearing
Bubble roller rolls around defoaming several times；
(3) 60min after mortar final set, mortar surface, sealed maintenance 24h are covered in plastic fresh-keeping membrane；
(4) after conserving, preservative film is removed, in the uniform brushing osmosis type liquid organosilicon class curing agent of mortar surface,
Usage amount is 0.3kg/m2；48h is spontaneously dried, after treating that mortar surface is completely dried, is polished and polishes.
Embodiment 4
A kind of surfacing self-leveling floor mortar includes the raw material components of following mass parts：220 parts of CA50 levels aluminate cement, 52.5
70 parts of white cement of level, 90 parts of alpha-semi water plaster stone, 130 parts of 400 mesh coarse whiting, 40~70 mesh washing, 200 parts of river sand, 70~140 mesh water
Wash 220 parts of river sand, 45 parts of VAE (16 DEG C of glass transition temperature), acrylate copolymer (glass
Change 13 DEG C of transition temperature) 15 parts, 1 part of water reducer, 1.5 parts of defoamer, 0.6 part of cellulose ether, 1 part of retarder, 5 parts of pigment.
The construction method of the surfacing self-leveling floor mortar comprises the following steps：
(1) it is 0.22 by water material mass ratio：1, add water to stir so that the initial flow degree of mortar is 145 ± 3mm；
(2) mortar being stirred uniformly is cast on the base material for having been coated with interfacial agents, shakeout with tooth harrow auxiliary, then with disappearing
Bubble roller rolls around defoaming several times；
(3) 30min after mortar final set, mortar surface, sealed maintenance 24h are covered in plastic fresh-keeping membrane；
(4) after conserving, preservative film is removed, in the uniform brushing osmosis type liquid organosilicon class curing agent of mortar surface,
Usage amount is 0.2kg/m2；24h is spontaneously dried, after treating that mortar surface is completely dried, is polished and polishes.
Embodiment 5
A kind of surfacing self-leveling floor mortar includes the raw material components of following mass parts：220 parts of aluminate cement, 52.5 white cements
70 parts, 90 parts of alpha-semi water plaster stone, 150 parts of 400 mesh coarse whiting, 40~70 mesh washing 200 parts of river sand, 70~140 mesh washing river sand 200
Part, 39 parts of VAE (16 DEG C of glass transition temperature), acrylate copolymer (glass transition temperature
13 DEG C of degree) 21 parts, 1 part of water reducer, 1.5 parts of defoamer, 0.5 part of cellulose ether, 1 part of retarder, 5 parts of pigment.
The construction method of the surfacing self-leveling floor mortar comprises the following steps：
(1) it is 0.22 by water material mass ratio：1, add water to stir so that the initial flow degree of mortar is 145 ± 3mm；
(2) mortar being stirred uniformly is cast on the base material for having been coated with interfacial agents, shakeout with tooth harrow auxiliary, then with disappearing
Bubble roller rolls around defoaming several times；
(3) 30min after mortar final set, mortar surface, sealed maintenance 30h are covered in plastic fresh-keeping membrane；
(4) after conserving, preservative film is removed, in the uniform brushing osmosis type liquid organosilicon class curing agent of mortar surface,
Usage amount is 0.3kg/m2；48h is spontaneously dried, after treating that mortar surface is completely dried, is polished and polishes.
Comparative example 1
A kind of surfacing self-leveling floor mortar includes the raw material components of following mass parts：200 parts of aluminate cement, 52.5 white cements
80 parts, 100 parts of alpha-semi water plaster stone, 170 parts of 400 mesh coarse whiting, 40~70 mesh washing 200 parts of river sand, 70~140 mesh washing river sand
200 parts, it is 40 parts of VAE (16 DEG C of glass transition temperature), 0.7 part of water reducer, 1 part of defoamer, fine
Plain 0.8 part of ether, 1.2 parts of retarder, 5 parts of pigment are tieed up, water material mass ratio is 0.21：1.Example weighs mortar each component in mass ratio,
It is well mixed, by regulation water consumption, add water to stir.Then, mortar is cast on the base material for having been coated with interfacial agents, uses tooth
Rake auxiliary is shakeout, then rolls around defoaming several times with defoaming roller, natural curing 48h, polishing grinding.
Comparative example 2
A kind of surfacing self-leveling floor mortar includes the raw material components of following mass parts：200 parts of aluminate cement, 52.5 white cements
80 parts, 100 parts of alpha-semi water plaster stone, 170 parts of 400 mesh coarse whiting, 40~70 mesh washing 200 parts of river sand, 70~140 mesh washing river sand
200 parts, 30 parts of VAE (16 DEG C of glass transition temperature), acrylate copolymer (glass transition
13 DEG C of temperature) 10 parts, 0.7 part of water reducer, 1 part of defoamer, 0.8 part of cellulose ether, 1.2 parts of retarder, 5 parts of pigment, water material matter
Amount is than being 0.21：1.Example weighs mortar each component in mass ratio, is well mixed, and by regulation water consumption, adds water to stir.So
Afterwards, mortar is cast on the base material for having been coated with interfacial agents, shakeout with tooth harrow auxiliary, if then rolling around defoaming with defoaming roller
Dry time, natural curing 48h, polishing grinding.
The performance of comparative example 1~5 and the surfacing self-leveling floor mortar obtained by comparative example 1-2, test method reference
JC/T985-2005《Ground cement-based self-leveling mortar》, it is specific as shown in table 1：
Table 1
Excellent from the anti-wear performance of the surfacing self-leveling floor mortar in the performance data of table 1, the embodiment of the present invention, 28d is resistance to
Mill amount is much smaller than comparative example 1-2.Surfacing self-leveling floor mortar contract with dry rate obtained by embodiment 1~5 is small, and strength development is fast, and 24h can
Reach more than the 60% of final strength, and later strength is higher, fully meets indoor decorating requirement.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Any modification, equivalent substitution and simple modifications for being made in content etc., should be included in the scope of the protection.
Claims (9)
1. a kind of surfacing self-leveling floor mortar, it is characterised in that the mortar includes the raw material components of following mass parts：Aluminate cement
200~240 parts, 60~80 parts of white cement, 80~100 parts of semi-hydrated gypsum, 130~170 parts of coarse whiting, washing river sand 400~420
Part, 40~60 parts of redispersable latex powder, 0.7~1.0 part of water reducer, 1~1.5 part of defoamer, 0.5~0.8 part of cellulose ether,
0.8~1.2 part of retarder, 5~10 parts of pigment.
2. surfacing self-leveling floor mortar according to claim 1, it is characterised in that the aluminate cement is CA50 levels, institute
White cement is stated as 42.5 grades or 52.5 grades, the semi-hydrated gypsum is alpha-semi water plaster stone.
3. surfacing self-leveling floor mortar according to claim 1, it is characterised in that the mesh number of the coarse whiting is 400 mesh, whiteness
>=90%.
4. surfacing self-leveling floor mortar according to claim 1, it is characterised in that the washing river sand is by 40~70 mesh and 70
~140 two kinds of mesh sand mix, and both mass ratioes are 1：0.6~1.7.
5. surfacing self-leveling floor mortar according to claim 1, it is characterised in that the redispersable latex powder is by acetic acid second
The matter of alkene ester-ethylene copolymer and acrylate copolymer composition, VAE and acrylate copolymer
Amount is than being 1：0.25~0.54, the glass transition temperature of VAE and acrylate copolymer is big
In 10 DEG C.
6. surfacing self-leveling floor mortar according to claim 1, it is characterised in that the water reducer is polycarboxylic acids powder diminishing
Agent；The retarder is L (+)-tartaric acid；The cellulose ether is hydroxypropyl methyl cellulose ether, viscosity 400mPa.s；Institute
It is organic silicon powder defoamer to state defoamer；The pigment is inorganic pigment.
7. a kind of construction method of surfacing self-leveling floor mortar, it is characterised in that this method comprises the following steps：
(1) water is added to stir in mortar raw material so that the initial flow degree of mortar is 145 ± 3mm；
(2) mortar being stirred uniformly is cast on the base material for having been coated with interfacial agents, shakeout with tooth harrow auxiliary, then rolled with defoaming
Cylinder rolls around defoaming several times；
(3) in 30~60min, mortar surface, 20~30h of sealed maintenance are being covered in plastic fresh-keeping membrane after mortar final set；
(4) after conserving, preservative film is removed, in the uniform brushing curing agent of mortar surface, is thrown after spontaneously drying 24~48h
Light and polishing.
8. the construction method of surfacing self-leveling floor mortar according to claim 1, it is characterised in that in step (1), addition
The mass ratio of water and mortar raw material is 0.20~0.22：1.
9. the construction method of surfacing self-leveling floor mortar according to claim 1, it is characterised in that described hard in step (4)
Agent is osmosis type liquid organosilicon class curing agent.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108516785A (en) * | 2018-07-03 | 2018-09-11 | 义乌市恒起进出口有限公司 | A kind of high-early-strength does not crack surfacing self-leveling floor mortar and preparation method thereof |
| CN112479665A (en) * | 2019-09-11 | 2021-03-12 | 韩超 | Gypsum-based floor paving system with heat preservation and heat insulation functions and construction method |
| CN112592146A (en) * | 2021-01-12 | 2021-04-02 | 江苏顺丽成建筑新材料有限公司 | Self-leveling terrace repairing material |
| CN112624716A (en) * | 2020-12-10 | 2021-04-09 | 新疆荣高鸿俊新材料技术有限公司 | Mortar and application thereof, wallboard and preparation method and application thereof |
| CN115093191A (en) * | 2021-12-31 | 2022-09-23 | 苏州弗克技术股份有限公司 | Surface layer art color self-leveling mortar and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108516785A (en) * | 2018-07-03 | 2018-09-11 | 义乌市恒起进出口有限公司 | A kind of high-early-strength does not crack surfacing self-leveling floor mortar and preparation method thereof |
| CN112479665A (en) * | 2019-09-11 | 2021-03-12 | 韩超 | Gypsum-based floor paving system with heat preservation and heat insulation functions and construction method |
| CN112624716A (en) * | 2020-12-10 | 2021-04-09 | 新疆荣高鸿俊新材料技术有限公司 | Mortar and application thereof, wallboard and preparation method and application thereof |
| CN112624716B (en) * | 2020-12-10 | 2022-11-15 | 新疆荣高鸿俊新材料技术有限公司 | Mortar and application thereof, wallboard and preparation method and application thereof |
| CN112592146A (en) * | 2021-01-12 | 2021-04-02 | 江苏顺丽成建筑新材料有限公司 | Self-leveling terrace repairing material |
| CN115093191A (en) * | 2021-12-31 | 2022-09-23 | 苏州弗克技术股份有限公司 | Surface layer art color self-leveling mortar and preparation method thereof |
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