CN102924014B - Binding mortar with light weight and high droop resistance and preparation and use methods - Google Patents

Binding mortar with light weight and high droop resistance and preparation and use methods Download PDF

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Publication number
CN102924014B
CN102924014B CN201210464864.XA CN201210464864A CN102924014B CN 102924014 B CN102924014 B CN 102924014B CN 201210464864 A CN201210464864 A CN 201210464864A CN 102924014 B CN102924014 B CN 102924014B
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parts
lightweight
property
hanging
mortar
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CN201210464864.XA
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Chinese (zh)
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CN102924014A (en
Inventor
方理
李少强
罗烈康
莫经波
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深圳广田高科新材料有限公司
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Abstract

The invention provides binding mortar with light weight and high droop resistance, which consists of the following components in parts by weight: 300-450 parts of cement, 40-100 parts of rapid hardening cement, 60-200 parts of lightweight aggregate, 250-450 parts of sand, 50-100 parts of filling material, 15-50 parts of re-dispersible emulsion powder, 3-5 parts of cellulose ether, 2-4 parts of lignocellulose, 0.5-2 parts of retarder and 1-5 parts of thixotropic lubricant. The lightweight aggregates are glass microspheres, or hollow glass microspheres or ceramsite sand, of which the particle size is below 1.2mm and loose bulk density is below 0.8Kg/L. The invention has lower mortar density, good droop resistance, lower thermal conductivity and certain thermal insulation performance; the binding mortar can be hardened quickly, and the requirement of carrying out subsequent construction quickly is satisfied; the elastic modulus of the mortar is small, and deformation resistance is strong; and the mortar uses multiple polymer additives, and base materials have strong adaptability and strong binding performance.

Description

A kind of lightweight high resistance hanging down property adhesive mortar and preparation thereof, using method
Technical field
The present invention relates to a kind of mortar, particularly a kind of lightweight high resistance hanging down property adhesive mortar and preparation thereof, using method.
Background technology
Traditional cement based adhesive mortar mainly pays close attention to the adhesive property of mortar, the building operation mode that reply is day by day complicated at present and broad variety material of construction, is more and more difficult to the requirement comprehensively meeting construction.The weak point of traditional cementi mortar is mainly reflected in following aspect:
(1) traditional cementi mortar is generally made up of inorganic coagulation material, sandy aggregate, powder, additive etc., and autologous density is comparatively large, and dry density is generally at 1.4g/cm 3above.The quality of materials consumed during construction usage is large, simultaneously because material deadweight is comparatively large, adds building bearing load.The vertical surfaces such as body of wall carry out point-like paste time, because of the factor of material deadweight, in order to avoid adhesive mortar hangs from above, have to adopt the adhesive surface of larger area on basal plane, add the usage quantity of material.When adhesive mortar needs stretch out larger distance perpendicular to metope, this situation is particularly evident.
(2) traditional cementi mortar setting and harden speed is comparatively slow, and the time forming desirable strength when being suitable for subsequent construction is longer, to requiring that the situation carrying out subsequent construction fast can not meet, easily incurs loss through delay the engineering time.
(3) Young's modulus of traditional cementi mortar is comparatively large, and the deformability of reply basal plane is not enough, has the risk of cracking.
(4) batching of mortar is single, and cohesive force is also inadequate, and base material adaptive faculty is weak;
(5) traditional cementi mortar, function is comparatively single.As the demand for current building energy conservation, traditional cementi mortar does not possess the additional properties such as heat insulation effect.
(6) the existing sand cutting slurry of tradition needs Site, piles up the raw material such as cement, sand at the scene, occupied ground, also can cause the environmental pollution of the aspects such as dust, noise, sewage in stirring, transport process, and a lot of city has been prohibited and used existing sand cutting to starch at present.
Particularly in, replace embed type aluminium alloy or the plastics floating screed rib material of traditional ash cake floating screed during the construction of more emerging wall plastering, rely on adhesive mortar to realize the verticality of rib on the wall and the outstanding distance identical with depth of plastering.When wall body vertical degree is poor, at metope recess, rib must protrude from the larger distance of body of wall.Now traditional mortar is comparatively large because of its deadweight, resists hanging from above property strong, needs on body of wall, adopt larger adhesive surface, use more material rib could be pasted and protrude from the larger distance of body of wall, cause construction inconvenience, waste material.Meanwhile, adhesive mortar intensity produces comparatively slow, needs to wait for that the long period just can carry out follow-up plastering construction after mortar hardening, impacts construction speed.In addition, rib adopts aluminium alloy or plastic material, and smooth surface, a lot of traditional cementi mortar can not realize effective bonding.Therefore, aluminum current alloy or plastics floating screed rib material there is no the bonding that suitable adhesive mortar can be applicable to it completely.
Summary of the invention
The technical problem that the present invention solves is to provide that a kind of density is lower, hanging from above property of high resistance, good heat insulating, sclerosis is quick, purposes is diversified, adapt to the bonding construction of the building materials of various material and nontoxic lightweight high resistance hanging down property adhesive mortar and preparation thereof, using method.
The invention provides a kind of hanging down property of lightweight high resistance adhesive mortar, be made up of following component according to weight part:
Cement: 300 ~ 450 parts
Rapid hardening cement: 40 ~ 100 parts
Light skeletal: 60 ~ 200 parts
Sand: 250 ~ 450 parts
Filler: 50 ~ 100 parts
Redispersible latex powder: 15 ~ 50 parts
Ether of cellulose: 3 ~ 5 parts
Lignocellulose: 2 ~ 4 parts
Retardant: 0.5 ~ 2 part
Thixotropic lubricant: 1 ~ 5 part.
Described light skeletal be particle diameter at below 1.2mm and loose bulk density at the glass bead of below 0.8Kg/L or hollow glass micropearl or ceramsite sand.
Described cement is preferably ordinary Portland cement or white portland cement; Described rapid hardening cement is preferably aluminate cement or quick hardening sulphoaluminate cement.
It is 40-70 object quartz sand or the particle diameter dry river sand at below 1.2mm that described sand is preferably particle diameter.
It is 200-400 object dry powder or one-level or second class powered coal ash that described filler is preferably particle diameter.
Described redispersible latex powder is preferably vinyl acetate and ethylene copolymer rubber powder (Vac/E), ethene and vinylchlorid and moon silicic acid vinyl acetate terpolymer rubber powder (E/Vc/VL), vinyl acetate and ethene and higher aliphatic vinyl acetate terpolymer rubber powder (Vac/E/VeoVa), vinyl acetate and higher aliphatic vinyl acetate copolymerization rubber powder (Vac/VeoVa), acrylate and styrene copolymerized rubber powder (A/S), vinyl acetate and acrylate and higher aliphatic vinyl acetate terpolymer rubber powder (Vac/A/VeoVa), any one in vinylbenzene and butadiene copolymer rubber powder (SBR).
Described ether of cellulose is preferably ethoxyl methyl cellulose ether or hydroxypropyl methyl cellulose ether.
The staple length of described lignocellulose is preferably 400 ~ 1000 μm.
Described retardant is preferably citric acid or tartrate; Described thixotropic lubricant is 602 thixotropic lubricant that Lockwood company produces.
Present invention also offers the preparation method of above-mentioned hanging down property of lightweight high resistance adhesive mortar: each component mixes by weight part as described above, double-shaft weightless mixing machine or coulter type mixer is used to mix, linear velocity during mixing is less than 2 meters per second, be uniformly mixed 2-5 minute, hanging down property of lightweight high resistance adhesive mortar can be obtained.
Present invention also offers the using method of above-mentioned hanging down property of lightweight high resistance adhesive mortar: in hanging down property of lightweight high resistance adhesive mortar, add that to account for its weight percent be that the water of 24-33% is stirred to evenly without caking, can use after leaving standstill 5-10 minute and stirring a little again.
The each reasonable mixture ratio of components of hanging down property of lightweight high resistance adhesive mortar of the present invention, can work in coordination with the performance improving mortar.Based on cement, property inorganic coagulation material is that mortar lifting is for certain cohesive force and physical strength; Rapid hardening cement is in particular the characteristic of mortar lifting for snap cure; Light skeletal achieves the lighting of mortar, and makes mortar possess heat preservation property; Sand, as the important framework material of mortar, provides mortar strength together with inorganic coagulation material; Filler improves mortar workability and improves mortar degree of compactness; The force of cohesion of redispersible latex powder reinforced mortar, makes mortar possess good viscosifying power; Ether of cellulose plays water-keeping thickening effect, improves the basal plane adaptive faculty of mortar, improves workability; Lignocellulose improves water retentivity of mortar energy, anti-cracking performance and weathering resistance; Retardant makes mortar in snap cure and reasonably averages out between operable time; Thixotropic lubricant improves anti-hanging from above property and the workability of mortar.
In sum, the present invention has following beneficial effect:
(1) slurry density is lower, is 1000-1200kg/m 3, have and good anti-ly hang performance from above, the point-like being particularly suitable for vertically going out the larger distance of body of wall is pasted, and can effectively reduce body of wall load-bearing and effectively reduce the consumption of material.
(2) there is lower thermal conductivity, be generally between 0.24W/m.K-0.31W/m.K, be significantly less than the thermal conductivity of traditional cementi mortar about 0.93W/m.K, there is certain heat-insulating property.
(3) snap cure, meet the demand of carrying out subsequent construction fast, time more traditional stick that can carry out subsequent construction shortens more than 2 times.
(4) Young's modulus of mortar is little, and ability of anti-deformation is strong, and the distortion adapting to basal plane is not easy to crack, is particularly suitable for density less, the Light Wall that Young's modulus is less, building block.
(5) mortar employs multiple polymers additive, and base material is adaptable, and viscosifying power is strong, can carry out constructing on various types of basal plane and adapt to the bonding construction of the building materials of various material.
(6) feature richness, possesses multiple use, such as, have certain heat-insulating property and be conducive to reducing building energy consumption, thus improve indoor environment.
(7) nontoxic, can not environmental pollution be caused.
In addition, hanging down property of lightweight high resistance adhesive mortar of the present invention is also particularly suitable for embed type aluminium alloy or the plastics floating screed rib strip material in order to replace traditional ash cake floating screed that traditional cementi mortar effectively cannot paste use.The present invention because of lightweight, early strong, viscosifying power is strong, water retention property is good characteristic, also can be used for part building damaged part reparation or directly as traditional ash cake floating screed material or be used as building construction.
Embodiment
Table 1
Embodiment 1
Each ingredients weight parts of hanging down property of the lightweight high resistance adhesive mortar adopted in the present embodiment is in table 1, cement wherein used is P. II 52.5R silicate cement, rapid hardening cement used is CA50 aluminate cement, light skeletal used be below particle diameter 1.2mm and loose bulk density at the ceramsite sand of below 0.8Kg/L, sand used is particle diameter is 40-70 order quartz sand, filler used is particle diameter is 200-400 object dry powder, redispersible latex powder used is vinyl acetate and ethylene copolymer rubber powder (Vac/E), ether of cellulose used is the hydroxypropyl methyl cellulose ether of 40,000 viscosity, the staple length of lignocellulose used is 600 μm, retardant used is L (+)-tartrate that Changzhou Tian Mao chemical engineering company limited produces, thixotropic lubricant used is 602 thixotropic lubricant that Lockwood company produces.
According to above-mentioned weight part, above-mentioned each component is mixed, double-shaft weightless mixing machine or coulter type mixer can be used to mix, for the linear velocity avoiding light skeletal to be destroyed mixing machine is preferably less than 2 meters per second, be uniformly mixed 2 minutes, hanging down property of lightweight high resistance adhesive mortar can be obtained.
According to " JGJ/T 70-2009 building mortar basic performance tests method " standard, the detection of tap density is carried out to hanging down property of the lightweight high resistance adhesive mortar that the present embodiment obtains, according to " JC/T547-2005 ceramic wall and floor bricks tackiness agent " standard, hanging down property of the lightweight high resistance adhesive mortar that the present embodiment obtains is carried out to the detection of the gluing former intensity of stretching and early stage stretching adhesive strength, according to " mensuration of the adiabatic steady state heat transfer character of GBT13475-2008 " standard, the detection of thermal conductivity is carried out to hanging down property of the lightweight high resistance adhesive mortar that the present embodiment obtains, every detected result is as shown in table 2.
Table 2
The using method of hanging down property of lightweight high resistance adhesive mortar in the present embodiment: add in above-mentioned hanging down property of the lightweight high resistance adhesive mortar prepared account for its weight percent be 28% water be stirred to evenly without caking, can use after leaving standstill 5 minutes and stirring a little again.
Embodiment 2
Each ingredients weight parts of hanging down property of the lightweight high resistance adhesive mortar adopted in the present embodiment is in table 1, cement wherein used is P. II 52.5R silicate cement, rapid hardening cement used is 42.5 quick hardening sulphoaluminate cements, light skeletal used be particle diameter be below 1.2mm and loose bulk density at the glass bead of below 0.8Kg/L, sand used is particle diameter is 40-70 order quartz sand, filler used is particle diameter is 200-400 object second class powered coal ash, redispersible latex powder used is vinyl acetate and ethylene copolymer rubber powder (Vac/E), ether of cellulose used is the ethoxyl methyl cellulose ether of 40,000 viscosity, the staple length of lignocellulose used is 1000 μm, retardant used is L (+)-tartrate that Changzhou Tian Mao chemical engineering company limited produces, thixotropic lubricant used is 602 thixotropic lubricant that Lockwood company produces.
Hanging down property of the present embodiment lightweight high resistance adhesive mortar is prepared according to preceding method.
As described in Example 1, its detected result is as shown in table 2 for the detection method of hanging down property of the present embodiment lightweight high resistance adhesive mortar.
The using method of hanging down property of lightweight high resistance adhesive mortar in the present embodiment: add in above-mentioned hanging down property of the lightweight high resistance adhesive mortar prepared account for its weight percent be 30% water be stirred to evenly without caking, can use after leaving standstill 5 minutes and stirring a little again.
Embodiment 3
Each ingredients weight parts of hanging down property of the lightweight high resistance adhesive mortar adopted in the present embodiment is in table 1, cement wherein used is P. II 52.5R silicate cement, rapid hardening cement used is CA50 aluminate cement, light skeletal used be particle diameter be 0.3-0.6mm and loose bulk density at the hollow glass micropearl of below 0.8Kg/L, sand used is particle diameter 40-70 object quartz sand, filler used is particle diameter 200-400 object dry powder, redispersible latex powder used is vinyl acetate and ethylene copolymer rubber powder (Vac/E), ether of cellulose used is the hydroxypropyl methyl cellulose ether of 40,000 viscosity, the staple length of lignocellulose used is 600 μm, retardant used is citric acid, thixotropic lubricant used is 602 thixotropic lubricant that Lockwood company produces.
Hanging down property of the present embodiment lightweight high resistance adhesive mortar is prepared according to preceding method.
As described in Example 1, its detected result is as shown in table 2 for the detection method of hanging down property of the present embodiment lightweight high resistance adhesive mortar.
The using method of hanging down property of lightweight high resistance adhesive mortar in the present embodiment: add in above-mentioned hanging down property of the lightweight high resistance adhesive mortar prepared account for its weight percent be 30% water be stirred to evenly without caking, can use after leaving standstill 8 minutes and stirring a little again.
Embodiment 4
Each ingredients weight parts of hanging down property of the lightweight high resistance adhesive mortar adopted in the present embodiment is in table 1, cement wherein used is P. II 52.5R silicate cement, rapid hardening cement used is CA50 aluminate cement, light skeletal used is below particle diameter 1.2mm and the ceramsite sand of loose bulk density below 0.8Kg/L, sand used is particle diameter 40-70 object quartz sand, filler used is 200-400 object second class powered coal ash for being particle diameter, redispersible latex powder used is vinyl acetate and ethylene copolymer rubber powder (Vac/E), ether of cellulose used is the hydroxypropyl methyl cellulose ether of 40,000 viscosity, the staple length of lignocellulose used is 400 μm, retardant used is L (+)-tartrate that Changzhou Tian Mao chemical engineering company limited produces, thixotropic lubricant used is 602 thixotropic lubricant that Lockwood company produces.
Hanging down property of the present embodiment lightweight high resistance adhesive mortar is prepared according to preceding method.
As described in Example 1, its detected result is as shown in table 2 for the detection method of hanging down property of the present embodiment lightweight high resistance adhesive mortar.
The using method of hanging down property of lightweight high resistance adhesive mortar in the present embodiment: add in above-mentioned hanging down property of the lightweight high resistance adhesive mortar prepared account for its weight percent be 27% water be stirred to evenly without caking, can use after leaving standstill 10 minutes and stirring a little again.
Embodiment 5
Each ingredients weight parts of hanging down property of the lightweight high resistance adhesive mortar adopted in the present embodiment is in table 1, cement wherein used is P. II 52.5R silicate cement, rapid hardening cement used is CA50 aluminate cement, light skeletal used is the glass bead of below particle diameter 1.2mm, sand used is the dry river sand of particle diameter 0.75mm-1.2mm, filler used is for being particle diameter 325 object dry powder, redispersible latex powder used is vinyl acetate and ethylene copolymer rubber powder (Vac/E), ether of cellulose used is the hydroxypropyl methyl cellulose ether of 30,000 viscosity, the staple length of lignocellulose used is 600 μm, retardant used is L (+)-tartrate that Changzhou Tian Mao chemical engineering company limited produces, thixotropic lubricant used is 602 thixotropic lubricant that Lockwood company produces.
Hanging down property of the present embodiment lightweight high resistance adhesive mortar is prepared according to preceding method.
As described in Example 1, its detected result is as shown in table 2 for the detection method of hanging down property of the present embodiment lightweight high resistance adhesive mortar.
The using method of hanging down property of lightweight high resistance adhesive mortar in the present embodiment: add in above-mentioned hanging down property of the lightweight high resistance adhesive mortar prepared account for its weight percent be 33% water be stirred to evenly without caking, can use after leaving standstill 5 minutes and stirring a little again.
Embodiment 6
Each ingredients weight parts of hanging down property of the lightweight high resistance adhesive mortar adopted in the present embodiment is in table 1, cement wherein used is P. II 52.5R silicate cement, rapid hardening cement used is CA50 aluminate cement, light skeletal used be particle diameter be 0.3mm-0.6mm and loose bulk density at the hollow glass micropearl of below 0.8Kg/L, sand used is particle diameter is 40-70 order quartz sand, filler used is particle diameter is 325 object dry powders, redispersible latex powder used is vinyl acetate and ethylene copolymer rubber powder (Vac/E), ether of cellulose used is the hydroxypropyl methyl cellulose ether of 40,000 viscosity, the staple length of lignocellulose used is 600 μm, L (+)-tartrate that Changzhou Tian Mao chemical engineering company limited used produces, thixotropic lubricant used is 602 thixotropic lubricant that Lockwood company produces.
Hanging down property of the present embodiment lightweight high resistance adhesive mortar is prepared according to preceding method.
As described in Example 1, its detected result is as shown in table 2 for the detection method of hanging down property of the present embodiment lightweight high resistance adhesive mortar.
The using method of hanging down property of lightweight high resistance adhesive mortar in the present embodiment: add in above-mentioned hanging down property of the lightweight high resistance adhesive mortar prepared account for its weight percent be 29% water be stirred to evenly without caking, can use after leaving standstill 5 minutes and stirring a little again.
Comparative example
The common adhesive mortar in building site is by the professional adhesive mortar of rubber powder, ether of cellulose and cement, sand mixture manufacturing or directly by sand, cement extemporaneous preparation, adds gauge water stirring and forms.
As described in Example 1, its detected result is as shown in table 2 for the detection method of hanging down property of this comparative example lightweight high resistance adhesive mortar.
As can be seen from Table 2, the product tap density of embodiment of the present invention 1-5 is starkly lower than the traditional cementi mortar of comparative example, effectively can reduce the operating weight of material, and thermal conductivity is obviously better than traditional mortar simultaneously, can play certain heat insulation effect.The product of embodiment of the present invention 1-5 also has the gluing former intensity of good stretching and the adhesive strength that stretches in early days, particularly the 24h gluing former intensity of stretching and early stage stretching adhesive strength there is good behaviour, after enforcement bonding, subsequent construction operation can be carried out in the short period.Because product of the present invention has lower density and the gluing former intensity of good stretching and the adhesive strength that stretches in early days, can be anti-hanging from above property and provide good guarantee.

Claims (9)

1. hanging down property of a lightweight high resistance adhesive mortar, is characterized in that, is made up of following component according to weight part:
Ordinary Portland cement or white portland cement: 300 ~ 450 parts
Aluminate cement or quick hardening sulphoaluminate cement: 40 ~ 100 parts
Light skeletal: 60 ~ 200 parts
Sand: 250 ~ 450 parts
Filler: 50 ~ 100 parts
Redispersible latex powder: 15 ~ 50 parts
Ether of cellulose: 3 ~ 5 parts
Lignocellulose: 2 ~ 4 parts
Retardant: 0.5 ~ 2 part
Thixotropic lubricant: 1 ~ 5 part;
Described light skeletal be particle diameter at below 1.2mm and loose bulk density at the glass bead of below 0.8Kg/L or hollow glass micropearl or ceramsite sand.
2. hanging down property of lightweight high resistance adhesive mortar according to claim 1, is characterized in that, described sand to be particle diameter be 40-70 object quartz sand or particle diameter are at the dry river sand of below 1.2mm.
3. hanging down property of lightweight high resistance adhesive mortar according to claim 2, is characterized in that, described filler is particle diameter is 200-400 object dry powder or flyash.
4. hanging down property of lightweight high resistance adhesive mortar according to claim 3, it is characterized in that, described redispersible latex powder is vinyl acetate and ethylene copolymer rubber powder (Vac/E), ethene and vinylchlorid and moon silicic acid vinyl acetate terpolymer rubber powder (E/Vc/VL), vinyl acetate and ethene and higher aliphatic vinyl acetate terpolymer rubber powder (Vac/E/VeoVa), vinyl acetate and higher aliphatic vinyl acetate copolymerization rubber powder (Vac/VeoVa), acrylate and styrene copolymerized rubber powder (A/S), vinyl acetate and acrylate and higher aliphatic vinyl acetate terpolymer rubber powder (Vac/A/VeoVa), any one in vinylbenzene and butadiene copolymer rubber powder (SBR).
5. hanging down property of lightweight high resistance adhesive mortar according to claim 4, it is characterized in that, described ether of cellulose is ethoxyl methyl cellulose ether or hydroxypropyl methyl cellulose ether.
6. hanging down property of lightweight high resistance adhesive mortar according to claim 5, is characterized in that, the staple length of described lignocellulose is 400 ~ 1000 μm.
7. hanging down property of lightweight high resistance adhesive mortar according to claim 6, it is characterized in that, described retardant is citric acid or tartrate.
8. the preparation method of hanging down property of a lightweight high resistance adhesive mortar as claimed in claim 1, it is characterized in that, according to weight part as claimed in claim 1, each component is mixed, double-shaft weightless mixing machine or coulter type mixer is used to mix, linear velocity during mixing is less than 2 meters per second, be uniformly mixed 2-5 minute, hanging down property of lightweight high resistance adhesive mortar can be obtained.
9. the using method of hanging down property of a lightweight high resistance adhesive mortar as claimed in claim 1, it is characterized in that, in hanging down property of lightweight high resistance adhesive mortar, add that to account for its weight percent be that the water of 24-33% is stirred to evenly without caking, can use after leaving standstill 5-10 minute and stirring a little again.
CN201210464864.XA 2012-11-16 2012-11-16 Binding mortar with light weight and high droop resistance and preparation and use methods CN102924014B (en)

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