CN114455977A - Premixed mortar and preparation process thereof - Google Patents
Premixed mortar and preparation process thereof Download PDFInfo
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- CN114455977A CN114455977A CN202210165259.6A CN202210165259A CN114455977A CN 114455977 A CN114455977 A CN 114455977A CN 202210165259 A CN202210165259 A CN 202210165259A CN 114455977 A CN114455977 A CN 114455977A
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- mixed mortar
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 61
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000002156 mixing Methods 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000011358 absorbing material Substances 0.000 claims abstract description 41
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 41
- 239000004088 foaming agent Substances 0.000 claims abstract description 41
- 239000004568 cement Substances 0.000 claims abstract description 38
- 239000012229 microporous material Substances 0.000 claims abstract description 35
- 239000002270 dispersing agent Substances 0.000 claims abstract description 33
- 238000005336 cracking Methods 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 30
- 239000006004 Quartz sand Substances 0.000 claims abstract description 29
- 239000004576 sand Substances 0.000 claims abstract description 29
- 239000011324 bead Substances 0.000 claims abstract description 28
- 239000010881 fly ash Substances 0.000 claims abstract description 27
- 239000004698 Polyethylene Substances 0.000 claims abstract description 22
- 239000004816 latex Substances 0.000 claims abstract description 22
- 229920000126 latex Polymers 0.000 claims abstract description 22
- -1 polyethylene Polymers 0.000 claims abstract description 22
- 229920000573 polyethylene Polymers 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 22
- 239000000835 fiber Substances 0.000 claims description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 11
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 11
- 235000013539 calcium stearate Nutrition 0.000 claims description 11
- 239000008116 calcium stearate Substances 0.000 claims description 11
- 239000000084 colloidal system Substances 0.000 claims description 11
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 11
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 11
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 11
- 238000005303 weighing Methods 0.000 claims description 11
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 11
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 6
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 4
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 4
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 4
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 2
- 239000003945 anionic surfactant Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 14
- 238000005034 decoration Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 9
- 239000005977 Ethylene Substances 0.000 description 9
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 9
- 239000000839 emulsion Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 229920003086 cellulose ether Polymers 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011545 laboratory measurement Methods 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/54—Substitutes for natural stone, artistic materials or the like
-
- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides ready-mixed mortar and a preparation process thereof, wherein the ready-mixed mortar is prepared from the following raw materials in parts by weight: 35-45 parts of quartz sand, 20-30 parts of cement, 10-20 parts of river sand, 0.05-0.15 part of anti-cracking agent, 0.1-0.5 part of water-retaining agent, 0.2-0.8 part of water reducing agent, 1-3 parts of latex powder and 20-30 parts of sound-absorbing material; wherein the total weight of the quartz sand, the cement, the river sand, the anti-cracking agent, the water-retaining agent, the water reducing agent, the latex powder and the sound-absorbing material is 100 parts; the sound-absorbing material is prepared by extruding and granulating a microporous material, a foaming agent, a dispersing agent and polyethylene through an extrusion device, wherein the microporous material, the foaming agent, the dispersing agent and the polyethylene are added with raw materials according to the weight ratio of 25-30:1-2:0.5-1: 20-30; the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to the mass ratio of 4-6:5-8: 1-2. The ready-mixed mortar has good sound insulation performance, high strength, low cost and good fireproof performance, has wide application scene, and can effectively reduce the additional weight during decoration when in use.
Description
Technical Field
The invention belongs to the technical field of building materials and construction, and particularly relates to ready-mixed mortar and a preparation process thereof.
Background
Along with the improvement of living standard, people attach more and more importance to the sound insulation performance of building materials to the impact sound and the noise that the friction produced to house upper floor are very counter-felt, not only influence the sleep of lower floor's resident, also influence people's mood, and the good or bad of building sound insulation performance has very important influence to the neighborhood relation.
The floor sound insulation is divided into air sound insulation and impact sound insulation, for a common 120mm cast-in-place concrete floor, the air sound insulation performance can reach the relevant national standard, but the impact sound insulation effect is poor, the impact sound pressure level is about 82dB, the lowest standard of not more than 75dB is not reached, and the high standard of not more than 65dB is not reached.
CN110357508B discloses sound-proof vibration-damping fireproof mortar and a preparation method thereof, wherein the mortar comprises, by weight, 40-60 parts of quartz sand, 20-30 parts of sand, 25-35 parts of cement, 20-35 parts of sound-absorbing material, 1-2 parts of anti-cracking agent, 1-3 parts of water reducing agent, 0.5-1 part of cellulose ether and 1-3 parts of emulsion powder; the sound-absorbing material comprises the following raw materials in parts by weight: 10-20 parts of polyethylene, 8-12 parts of floating bead, 0.1-1 part of foaming agent and 0.5-1 part of dispersing agent. Although the technical scheme of this patent has fine solution the problem of sound insulation and sound absorption, the basis weight of the mortar of making is great, and the application scene is restricted during practical application.
Disclosure of Invention
The invention aims to provide premixed mortar, wherein vitrified micro-beads, floating beads and fly ash are mixed to be used as a microporous material to prepare a sound-absorbing material, and then the mixture ratio of the raw materials is improved to obtain light mortar with good sound insulation performance, high strength, low cost and good fireproof performance.
In order to achieve the purpose, the invention adopts the technical scheme that: the ready-mixed mortar is prepared from the following raw materials in parts by weight:
35-45 parts of quartz sand
20-30 parts of cement
10-20 parts of river sand
0.05 to 0.15 portion of anti-cracking agent
0.1 to 0.5 portion of water-retaining agent
0.2-0.8 part of water reducing agent
1-3 parts of latex powder
20-30 parts of sound absorbing material;
wherein the total weight parts of the quartz sand, the cement, the river sand, the anti-cracking agent, the water-retaining agent, the water reducing agent, the latex powder and the sound-absorbing material are 100 parts;
the sound-absorbing material is prepared by extruding and granulating a microporous material, a foaming agent, a dispersing agent and polyethylene through an extrusion device, wherein the microporous material, the foaming agent, the dispersing agent and the polyethylene are added with raw materials according to the weight ratio of 25-30:1-2:0.5-1: 20-30; the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to the mass ratio of 4-6:5-8: 1-2.
Furthermore, the particle diameters of the vitrified micro bubbles, the floating beads and the fly ash are 100-200 mu m.
Further, the sound absorbing material is prepared by the following steps: s1, weighing the vitrified micro bubbles, the floating beads and the fly ash according to the weight ratio, and uniformly mixing to obtain the microporous material; s2, weighing the microporous material and the foaming agent according to the weight ratio, and uniformly mixing to obtain a mixture; s3, weighing the dispersing agent and the polyethylene according to the weight ratio, feeding the dispersing agent and the polyethylene from a main feeding port of the basic equipment, feeding the mixture from a side feeding port of the extrusion equipment, and extruding and granulating to obtain the sound-absorbing material;
the temperature of the first zone of the extrusion equipment is 105-120 ℃, the temperature of the second zone is 160-170 ℃, the temperature of the third zone is 200-220 ℃, the temperature of the fourth zone is 180-200 ℃, the temperature of the fifth zone is 160-170 ℃, and the side feeding port is positioned in the fourth zone.
Further, the foaming agent is prepared by mixing ACP series foaming agent and sodium bicarbonate according to the weight ratio of 2-3: 1; the dispersing agent is formed by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
Furthermore, the mesh number of the quartz sand is 20-40 meshes, the mesh number of the river sand is 20-40 meshes, and the strength grade of the cement is 42.5.
Furthermore, the anti-cracking agent is PP fiber, and the length of the PP fiber is 4-6 mm.
Further, the water-retaining agent is hydroxyethyl methyl cellulose or hydroxypropyl methyl cellulose.
Furthermore, the water reducing agent is a BC-2 type high-efficiency water reducing agent, is formed by a sulfonic acid formaldehyde condensation compound and an early strength agent, belongs to an anionic surfactant, and can greatly reduce the water consumption.
Further, the latex powder is an ethylene-vinyl acetate copolymer, and polyvinyl alcohol is used as a protective colloid.
The second purpose of the invention is to provide a preparation process of the ready-mixed mortar, which is characterized in that quartz sand, cement, river sand, a cracking prevention agent, a water-retaining agent, a water reducing agent, latex powder and a sound-absorbing material are respectively weighed according to parts by weight and are uniformly mixed to obtain the ready-mixed mortar.
Furthermore, water in an amount of 25% by weight of the ready-mixed mortar is added to the ready-mixed mortar, and the ready-mixed mortar can be used after being uniformly mixed.
The invention has the advantages and positive effects that:
1. according to the invention, by improving the proportion of the raw materials, the light mortar with good sound insulation performance, high strength and good fireproof performance is obtained, the additional weight during decoration can be effectively reduced during use, and the application range is wide.
2. The invention adopts the vitrified micro bubbles, floating beads and fly ash which are mixed to be used as the microporous material to prepare the sound-absorbing material, thereby reducing the weight of the sound-absorbing material and achieving the purpose of reducing the weight of the mortar.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
Example 1:
the ready-mixed mortar is prepared from the following raw materials in parts by weight:
40 parts of quartz sand
23.65 portions of cement
15 portions of river sand
0.05 part of anti-cracking agent
0.1 portion of water-retaining agent
0.2 part of water reducing agent
Emulsion powder 1 part
20 parts of sound absorbing material;
the anti-cracking agent is PP fiber with the thickness of 4-6mm, the cement is cement with the strength grade of 42.5, the water-retaining agent is hydroxyethyl methyl cellulose, the water reducing agent is a BC-2 type high-efficiency water reducing agent, the latex powder is a copolymer of ethylene and vinyl acetate, and polyvinyl alcohol is used as a protective colloid; the mesh number of the quartz sand and the river sand is 20 meshes.
The sound-absorbing material is prepared by mixing a microporous material, a foaming agent, a dispersing agent and polyethylene according to a weight ratio of 25:1:0.5:20, wherein the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to a mass ratio of 4:5: 1; the particle sizes of the vitrified micro bubbles, the floating beads and the fly ash are between 100 and 200 mu m; the foaming agent is prepared by mixing an ACP foaming agent and sodium bicarbonate according to the mass ratio of 2: 1; the dispersing agent is prepared by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
The premixed mortar is prepared by the following steps:
preparing a sound absorbing material: s1, weighing the vitrified micro bubbles, the floating beads and the fly ash according to the weight ratio, and uniformly mixing to obtain the microporous material; s2, weighing the microporous material and the foaming agent according to the weight ratio, and uniformly mixing to obtain a mixture; s3, weighing the dispersing agent and the polyethylene according to the weight ratio, feeding the dispersing agent and the polyethylene from a main feeding port of basic equipment, feeding the mixture from a side feeding port of extrusion equipment, and extruding and granulating to obtain the sound-absorbing material; wherein the temperature of the first zone of the extrusion equipment is 105-120 ℃, the temperature of the second zone is 160-170 ℃, the temperature of the third zone is 200-220 ℃, the temperature of the fourth zone is 180-200 ℃, the temperature of the fifth zone is 160-170 ℃, and the side feeding port is positioned in the fourth zone.
Preparing ready-mixed mortar: respectively weighing quartz sand, cement, river sand, a cracking prevention agent, a water-retaining agent, a water-reducing agent, latex powder and a sound-absorbing material according to the weight parts, and uniformly mixing to obtain the ready-mixed mortar.
Example 2:
the ready-mixed mortar is prepared from the following raw materials in parts by weight:
35 parts of quartz sand
20 portions of cement
River sand 12.05 parts
0.15 part of anti-cracking agent
0.3 portion of water-retaining agent
0.5 part of water reducing agent
2 portions of latex powder
30 parts of sound absorbing material;
the anti-cracking agent is PP fiber with the thickness of 4-6mm, the cement is cement with the strength grade of 42.5, the water-retaining agent is hydroxyethyl methyl cellulose, the water reducing agent is a BC-2 type high-efficiency water reducing agent, the latex powder is a copolymer of ethylene and vinyl acetate, and polyvinyl alcohol is used as a protective colloid; the mesh number of the quartz sand and the river sand is 20 meshes.
The sound-absorbing material is prepared by mixing a microporous material, a foaming agent, a dispersing agent and polyethylene according to a weight ratio of 25:1:0.5:20, wherein the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to a mass ratio of 4:5: 1; the particle sizes of the vitrified micro bubbles, the floating beads and the fly ash are between 100 and 200 mu m; the foaming agent is prepared by mixing an ACP foaming agent and sodium bicarbonate according to the mass ratio of 2: 1; the dispersing agent is prepared by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
The preparation method of this example is the same as example 1.
Example 3:
the ready-mixed mortar is prepared from the following raw materials in parts by weight:
45 parts of quartz sand
20 portions of cement
10 portions of river sand
0.15 part of anti-cracking agent
0.5 portion of water-retaining agent
0.8 part of water reducing agent
2 portions of latex powder
21.55 parts of sound absorbing material;
the anti-cracking agent is PP fiber with the thickness of 4-6mm, the cement is cement with the strength grade of 42.5, the water-retaining agent is hydroxyethyl methyl cellulose, the water reducing agent is a BC-2 type high-efficiency water reducing agent, the latex powder is a copolymer of ethylene and vinyl acetate, and polyvinyl alcohol is used as a protective colloid; the mesh number of the quartz sand and the river sand is 20 meshes.
The sound-absorbing material is prepared by mixing a microporous material, a foaming agent, a dispersing agent and polyethylene according to a weight ratio of 25:1:0.5:20, wherein the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to a mass ratio of 4:5: 1; the particle sizes of the vitrified micro bubbles, the floating beads and the fly ash are between 100 and 200 mu m; the foaming agent is prepared by mixing an ACP foaming agent and sodium bicarbonate according to the mass ratio of 2: 1; the dispersing agent is prepared by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
The preparation method of this example is the same as example 1.
Example 4:
the ready-mixed mortar is prepared from the following raw materials in parts by weight:
35 parts of quartz sand
30 portions of cement
10 portions of river sand
0.1 part of anti-cracking agent
0.5 portion of water-retaining agent
0.4 part of water reducing agent
Emulsion powder 1 part
23 parts of a sound absorbing material;
the anti-cracking agent is PP fiber with the thickness of 4-6mm, the cement is cement with the strength grade of 42.5, the water-retaining agent is hydroxyethyl methyl cellulose, the water reducing agent is a BC-2 type high-efficiency water reducing agent, the latex powder is a copolymer of ethylene and vinyl acetate, and polyvinyl alcohol is used as a protective colloid; the mesh number of the quartz sand and the river sand is 20 meshes.
The sound-absorbing material is prepared by mixing a microporous material, a foaming agent, a dispersing agent and polyethylene according to a weight ratio of 25:1:0.5:20, wherein the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to a mass ratio of 4:5: 1; the particle sizes of the vitrified micro bubbles, the floating beads and the fly ash are between 100 and 200 mu m; the foaming agent is prepared by mixing an ACP foaming agent and sodium bicarbonate according to the mass ratio of 2: 1; the dispersing agent is prepared by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
The preparation method of this example is the same as example 1.
Example 5:
the ready-mixed mortar is prepared from the following raw materials in parts by weight:
37.55 parts of quartz sand
20 portions of cement
20 portions of river sand
0.15 part of anti-cracking agent
0.5 portion of water-retaining agent
0.8 part of water reducing agent
Emulsion powder 1 part
20 parts of sound absorbing material;
the anti-cracking agent is PP fiber with the thickness of 4-6mm, the cement is cement with the strength grade of 42.5, the water-retaining agent is hydroxyethyl methyl cellulose, the water reducing agent is a BC-2 type high-efficiency water reducing agent, the latex powder is a copolymer of ethylene and vinyl acetate, and polyvinyl alcohol is used as a protective colloid; the mesh number of the quartz sand and the river sand is 20 meshes.
The sound-absorbing material is prepared by mixing a microporous material, a foaming agent, a dispersing agent and polyethylene according to a weight ratio of 25:1:0.5:20, wherein the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to a mass ratio of 4:5: 1; the particle sizes of the vitrified micro bubbles, the floating beads and the fly ash are between 100 and 200 mu m; the foaming agent is prepared by mixing an ACP foaming agent and sodium bicarbonate according to the mass ratio of 2: 1; the dispersing agent is prepared by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
The preparation method of this example is the same as example 1.
Example 6:
the ready-mixed mortar is prepared from the following raw materials in parts by weight:
40 parts of quartz sand
23.65 portions of cement
15 portions of river sand
0.05 part of anti-cracking agent
0.1 portion of water-retaining agent
0.2 part of water reducing agent
Emulsion powder 1 part
20 parts of sound absorbing material;
the anti-cracking agent is PP fiber with the thickness of 4-6mm, the cement is cement with the strength grade of 42.5, the water-retaining agent is hydroxyethyl methyl cellulose, the water reducing agent is a BC-2 type high-efficiency water reducing agent, the latex powder is a copolymer of ethylene and vinyl acetate, and polyvinyl alcohol is used as a protective colloid; the mesh number of the quartz sand and the river sand is 40 meshes.
The sound-absorbing material is prepared by mixing a microporous material, a foaming agent, a dispersing agent and polyethylene according to a weight ratio of 25:2:1:20, wherein the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to a mass ratio of 4:5: 1; the particle diameters of the vitrified micro bubbles, the floating beads and the fly ash are between 100-200 mu m; the foaming agent is prepared by mixing an ACP foaming agent and sodium bicarbonate according to the mass ratio of 3: 1; the dispersing agent is prepared by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
The preparation method of this example is the same as example 1.
Example 7:
the ready-mixed mortar is prepared from the following raw materials in parts by weight:
40 parts of quartz sand
23.65 portions of cement
15 portions of river sand
0.05 part of anti-cracking agent
0.1 portion of water-retaining agent
0.2 part of water reducing agent
Emulsion powder 1 part
20 parts of sound absorbing material;
the anti-cracking agent is PP fiber with the thickness of 4-6mm, the cement is cement with the strength grade of 42.5, the water-retaining agent is hydroxypropyl methyl cellulose, the water-reducing agent is a BC-2 type high-efficiency water-reducing agent, the latex powder is a copolymer of ethylene and vinyl acetate, and polyvinyl alcohol is used as a protective colloid; the mesh number of the quartz sand and the river sand is 20 meshes.
The sound-absorbing material is prepared by mixing a microporous material, a foaming agent, a dispersing agent and polyethylene according to a weight ratio of 30:1:1:20, wherein the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to a mass ratio of 6:8: 2; the particle sizes of the vitrified micro bubbles, the floating beads and the fly ash are between 100 and 200 mu m; the foaming agent is prepared by mixing an ACP foaming agent and sodium bicarbonate according to the mass ratio of 2: 1; the dispersing agent is prepared by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
The preparation method of this example is the same as example 1.
Example 8:
the ready-mixed mortar is prepared from the following raw materials in parts by weight:
40 parts of quartz sand
23.65 portions of cement
15 portions of river sand
0.05 part of anti-cracking agent
0.1 portion of water-retaining agent
0.2 part of water reducing agent
Emulsion powder 1 part
20 parts of sound absorbing material;
the anti-cracking agent is PP fiber with the thickness of 4-6mm, the cement is cement with the strength grade of 42.5, the water-retaining agent is hydroxypropyl methyl cellulose, the water-reducing agent is a BC-2 type high-efficiency water-reducing agent, the latex powder is a copolymer of ethylene and vinyl acetate, and polyvinyl alcohol is used as a protective colloid; the mesh number of the quartz sand and the river sand is 40 meshes.
The sound-absorbing material is prepared by mixing a microporous material, a foaming agent, a dispersing agent and polyethylene according to a weight ratio of 25:1:0.5:30, wherein the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to a mass ratio of 5:7: 2; the particle sizes of the vitrified micro bubbles, the floating beads and the fly ash are between 100 and 200 mu m; the foaming agent is prepared by mixing an ACP foaming agent and sodium bicarbonate according to the mass ratio of 3: 1; the dispersing agent is prepared by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
The preparation method of this example is the same as example 1.
Example 9:
the ready-mixed mortar is prepared from the following raw materials in parts by weight:
40 parts of quartz sand
23.65 portions of cement
15 portions of river sand
0.05 part of anti-cracking agent
0.1 portion of water-retaining agent
0.2 part of water reducing agent
Emulsion powder 1 part
20 parts of sound absorbing material;
the anti-cracking agent is PP fiber with the thickness of 4-6mm, the cement is cement with the strength grade of 42.5, the water-retaining agent is hydroxyethyl methyl cellulose, the water reducing agent is a BC-2 type high-efficiency water reducing agent, the latex powder is a copolymer of ethylene and vinyl acetate, and polyvinyl alcohol is used as a protective colloid; the mesh number of the quartz sand and the river sand is 20 meshes.
The sound-absorbing material is prepared by mixing a microporous material, a foaming agent, a dispersing agent and polyethylene according to a weight ratio of 25:2:0.5:30, wherein the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to a mass ratio of 4:8: 1; the particle sizes of the vitrified micro bubbles, the floating beads and the fly ash are between 100 and 200 mu m; the foaming agent is prepared by mixing an ACP foaming agent and sodium bicarbonate according to the mass ratio of 2.5: 1; the dispersing agent is prepared by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
The preparation method of this example is the same as example 1.
Comparative example 1:
the preparation method of the comparative example adopts the technical scheme of CN110357508B in example 1 to prepare the mortar.
Experimental example 1:
to the mortars prepared in examples 1 to 9 and comparative example 1, 25% by weight of water based on the weight of the mortar was added, and to the mortar prepared in comparative example 1, 35% by weight of water based on the weight of the mortar was added (this item was used as a control 2), and after mixing uniformly, construction was performed on a reinforced concrete floor, and then performance tests were performed, wherein the thickness of the reinforced concrete floor was 150mm, the mortar was applied to both sides of the floor, the thickness of the mortar was 10mm, and the sound insulation test standard was GB/T19889.8-2006 laboratory measurement of impact sound improvement in the 8 th part of heavy standard plate cladding layer for acoustic building and construction members, and the test results are shown in Table 1:
TABLE 1 Sound insulation test data
As is clear from the experimental data in table 1, the sound insulation effect of the ready-mixed mortar of the present invention is equivalent to and slightly superior to that of the technical means disclosed in the control group 2, namely, CN 109748551A. In addition, the mortar in the embodiment of the invention has excellent mechanical property and sound absorption property. Meanwhile, as can be seen from the above experimental data, the mortar of the embodiment of the invention can be prepared into a suitable slurry for use only by adding 25% of water when in use, and compared with the technical scheme disclosed in CN109748551A, the mortar saves water, thereby saving resources and cost.
Experimental example 2:
examples 1-9 and comparative example 1 were tested for basis weight by the following specific test methods: 33 tiles with the same area are selected for experiments, in the experimental example, 800 × 800 tiles are adopted, the initial weight of the tiles is weighed, then the slurry prepared in the experimental example 1 is coated on the tiles respectively, the thickness of the slurry is 10mm, the weight of the tiles is weighed again after 3 hours of coagulation, and the detection results are shown in table 2.
Table 2 basis weight test data
From the above experimental data, it can be seen that the mortar of the present invention has a lighter weight than other mortars for the same amount of mortar, and can effectively reduce the additional weight during decoration when in use, thereby increasing the application range thereof and being suitable for various occasions.
While specific embodiments of the present invention have been described in detail, the description is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. The ready-mixed mortar is characterized by comprising the following raw materials in parts by weight:
35-45 parts of quartz sand
20-30 parts of cement
10-20 parts of river sand
0.05 to 0.15 portion of anti-cracking agent
0.1 to 0.5 portion of water-retaining agent
0.2-0.8 part of water reducing agent
1-3 parts of latex powder
20-30 parts of sound absorbing material;
wherein the total weight parts of the quartz sand, the cement, the river sand, the anti-cracking agent, the water-retaining agent, the water reducing agent, the latex powder and the sound-absorbing material are 100 parts;
the sound-absorbing material is prepared by extruding and granulating a microporous material, a foaming agent, a dispersing agent and polyethylene through an extrusion device, wherein the microporous material, the foaming agent, the dispersing agent and the polyethylene are added with raw materials according to the weight ratio of 25-30:1-2:0.5-1: 20-30; the microporous material is prepared by mixing vitrified micro bubbles, floating beads and fly ash according to the mass ratio of 4-6:5-8: 1-2.
2. The ready-mixed mortar of claim 1, wherein: the sound-absorbing material is prepared by the following steps: s1, weighing the vitrified micro bubbles, the floating beads and the fly ash according to the weight ratio, and uniformly mixing to obtain the microporous material; s2, weighing the microporous material and the foaming agent according to the weight ratio, and uniformly mixing to obtain a mixture; s3, weighing the dispersing agent and the polyethylene according to the weight ratio, feeding the dispersing agent and the polyethylene from a main feeding port of the basic equipment, feeding the mixture from a side feeding port of the extrusion equipment, and extruding and granulating to obtain the sound-absorbing material;
the temperature of the first zone of the extrusion equipment is 105-120 ℃, the temperature of the second zone is 160-170 ℃, the temperature of the third zone is 200-220 ℃, the temperature of the fourth zone is 180-200 ℃, the temperature of the fifth zone is 160-170 ℃, and the side feeding port is positioned in the fourth zone.
3. The ready-mixed mortar of claim 2, wherein: the foaming agent is prepared by mixing ACP series foaming agent and sodium bicarbonate according to the weight ratio of 2-3: 1; the dispersing agent is formed by mixing calcium stearate and zinc stearate according to the mass ratio of 1: 1.
4. The ready-mixed mortar of claim 1, wherein: the anti-cracking agent is PP fiber, and the length of the PP fiber is 4-6 mm.
5. The ready-mixed mortar of claim 1, wherein: the water-retaining agent is hydroxyethyl methyl cellulose or hydroxypropyl methyl cellulose.
6. The ready-mixed mortar of claim 1, wherein: the water reducing agent is a BC-2 type high-efficiency water reducing agent, is formed by a sulfonic acid formaldehyde condensation compound and an early strength agent, belongs to an anionic surfactant, and can greatly reduce the water consumption.
7. The ready-mixed mortar of claim 1, wherein: the latex powder is an ethylene-vinyl acetate copolymer, and polyvinyl alcohol is used as a protective colloid.
8. A process for preparing a ready-mixed mortar according to any one of claims 1 to 7, characterized in that: respectively weighing quartz sand, cement, river sand, an anti-cracking agent, a water-retaining agent, a water-reducing agent, latex powder and a sound-absorbing material according to the parts by weight, and uniformly mixing to obtain the ready-mixed mortar.
9. The preparation process of the ready-mixed mortar according to claim 8, wherein the preparation process comprises the following steps: adding water accounting for 25 percent of the weight of the ready-mixed mortar into the ready-mixed mortar, and uniformly mixing the water and the ready-mixed mortar for use.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116178044A (en) * | 2022-12-02 | 2023-05-30 | 江苏中鼎建材集团有限公司 | Mortar for environment-friendly building heat preservation and preparation method thereof |
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