CN113563033A - Light heat-insulation dry-mixed mortar for 3D printing - Google Patents
Light heat-insulation dry-mixed mortar for 3D printing Download PDFInfo
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- CN113563033A CN113563033A CN202110722792.3A CN202110722792A CN113563033A CN 113563033 A CN113563033 A CN 113563033A CN 202110722792 A CN202110722792 A CN 202110722792A CN 113563033 A CN113563033 A CN 113563033A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B28/06—Aluminous cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- 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 discloses light heat-insulating dry-mixed mortar for 3D printing, belongs to the technical field of building material production, solves the problems of long construction period, hollowness, cracking and falling of the existing mortar, and has the technical key points that: the feed comprises the following raw materials in parts by weight: 30-40 parts of cement, 5-50 parts of lightweight aggregate, 5-25 parts of superfine micropowder, 0.0001-0.6 part of polymer latex powder, 0.1-2 parts of early strength agent, 0.1-0.3 part of thickening agent, 0.001-0.1 part of coagulant, 0.1-0.5 part of fiber and 0.001-0.15 part of powdery polycarboxylic acid water reducing agent, and has the advantages of realizing light weight, energy conservation, waste utilization, compounding and multiple functions of wall materials.
Description
The 20 th century and the 80 th century begin, so that the energy consumption of buildings is reduced, the living comfort is improved, and external heat preservation of external walls of the buildings is necessary.
At present, a plurality of problems exist in an external thermal insulation system of a building, and due to the change of environmental and climatic factors, the external thermal insulation technical field of temperature stress, wind load and freeze-thaw stress generated by temperature change
The invention relates to the technical field of building material production, in particular to light heat-insulating dry-mixed mortar for 3D printing.
Background
With the rapid development of social industrial informatization, energy is consumed transitionally. The newly-built house area of 160 hundred million square meters is a high-energy-consumption building with the energy utilization rate of only 33 percent every year in China, and the total building energy consumption accounts for one third of the total national energy consumption. The energy-saving standardization work of buildings in China is influenced by the durability of the system, the heat preservation system can also have the problems of falling, cracking, hollowing, water seepage and the like over time, and the falling of the heat preservation system outside the building causes the falling of objects to hurt people and the occurrence of car crashing frequently. In the design of green buildings, not only the energy consumption of the building materials in the using process needs to be concerned, but also the energy consumed for producing the building materials needs to be considered.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention aims to provide a light heat-insulating dry-mixed mortar for 3D printing to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a light heat-insulation dry-mixed mortar for 3D printing comprises the following raw materials in parts by weight: 30-40 parts of cement, 5-50 parts of lightweight aggregate, 5-25 parts of superfine micropowder, 0.0001-0.6 part of polymer latex powder, 0.1-2 parts of early strength agent, 0.1-0.3 part of thickening agent, 0.001-0.1 part of coagulant, 0.1-0.5 part of fiber and 0.001-0.15 part of powdery polycarboxylic acid water reducing agent.
As a further scheme of the invention, the following raw materials in parts by weight: 30 parts of aluminate cement, 50 parts of hollow glass beads, 19 parts of superfine calcium carbonate powder, 0.5 part of polymer emulsion powder, 0.12 part of early strength agent, 0.0086 part of thickening agent, 0.02 part of stabilizing agent, 0.002 part of coagulant, 0.3 part of synthetic fiber and 0.05 part of powdery sodium alginate polycarboxylic acid water reducing agent.
As a further scheme of the invention, the following raw materials in parts by weight: 34 parts of aluminate cement, 56 parts of hollow glass beads, 8.9 parts of superfine slag powder, 0.49 part of polymer emulsion powder, 0.15 part of early strength agent, 0.007 part of thickening agent, 0.04 part of stabilizer, 0.003 part of coagulant, 0.4 part of glass fiber and 0.01 part of powdery sodium alginate polycarboxylate water reducer.
As a further scheme of the invention, the following raw materials in parts by weight: 38 parts of Portland cement, 40 parts of hollow glass beads, 20 parts of ultrafine fly ash, 1 part of polymer latex powder, 0.2 part of early strength agent, 0.01 part of thickening agent, 0.1 part of stabilizing agent, 0.04 part of coagulant, 0.6 part of steel fiber and 0.05 part of powdery sodium alginate polycarboxylic acid water reducing agent.
As a further scheme of the invention, the following raw materials in parts by weight: 40 parts of aluminate cement, 51 parts of hollow glass beads, 5 parts of superfine heavy calcium carbonate powder, 0.1 part of polymer emulsion powder, 2 parts of early strength agent, 1 part of thickening agent, 0.15 part of stabilizing agent, 0.1 part of coagulant, 0.5 part of steel fiber and 0.15 part of powdery sodium alginate polycarboxylic acid water reducing agent.
As a further scheme of the invention, the method comprises the following steps:
step 1: weighing various raw materials in proportion;
step 2: adding cement, lightweight aggregate, superfine micropowder, fine sand, polymer latex powder, an early strength agent, a stabilizer, fiber and a powdery polycarboxylic acid water reducing agent into a dry mixer;
and step 3: adding water into the water of the dry mixer, and uniformly mixing the water and the raw materials.
As a further proposal of the invention, the cement is one or a mixture of more of Portland cement, ordinary Portland cement, ultra-fine Portland cement and aluminate cement.
As a further proposal of the invention, the lightweight aggregate is one or a mixture of more of hollow glass microballoons, expanded vitrified microballoons, expanded perlite, closed-cell perlite, granulated foam glass and vermiculite.
As a further scheme of the invention, the polymer latex powder is one or a mixture of more of vinyl acetate and ethylene copolymer rubber powder, ethylene and vinyl chloride and vinyl metasilicate ternary copolymer rubber powder, vinyl acetate and ethylene and higher fatty acid vinyl ester ternary copolymer rubber powder, vinyl acetate and higher fatty acid vinyl ester copolymer rubber powder, acrylate and styrene copolymer rubber powder and vinyl acetate homopolymerization rubber powder.
In summary, compared with the prior art, the embodiment of the invention has the following beneficial effects:
the lightweight heat-insulating dry-mixed mortar is prepared by uniformly stirring cement, lightweight aggregate, superfine micro powder, fine sand, polymer latex powder, an early strength agent, a stabilizer, a coagulant, fiber, a powdery polycarboxylate superplasticizer and water. The invention relates to light heat-insulating dry-mixed mortar, which realizes light weight, energy conservation, waste utilization, compound and multiple functions of wall materials. The printed heat-insulating wall is firmly and safely bonded, meets the national material reduction construction policy, and realizes the combination of material increase and material reduction processes.
The present invention will be described in detail with reference to the following specific examples in order to more clearly illustrate the structural features and effects of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
In one embodiment, the light heat-insulating dry-mixed mortar for 3D printing comprises the following raw materials in parts by weight: 30-40 parts of cement, 5-50 parts of lightweight aggregate, 5-25 parts of superfine micropowder, 0.0001-0.6 part of polymer latex powder, 0.1-2 parts of early strength agent, 0.1-0.3 part of thickening agent, 0.001-0.1 part of coagulant, 0.1-0.5 part of fiber and 0.001-0.15 part of powdery polycarboxylic acid water reducing agent.
In this example, the following raw materials in parts by weight were used: 30-40 parts of cement, 5-50 parts of lightweight aggregate, 5-25 parts of superfine micro powder, 0.0001-0.6 part of polymer emulsion powder, 0.1-2 parts of early strength agent, 0.1-0.3 part of thickening agent, 0.001-0.1 part of coagulant, 0.1-0.5 part of fiber and 0.001-0.15 part of powdery polycarboxylic acid water reducing agent, adding a dry mixer for physical mixing, uniformly mixing, adding water and uniformly stirring to prepare the 3D printing light heat-insulating and heat-preserving dry-mixed mortar.
The light heat-insulation dry-mixed mortar for 3D printing comprises the following steps:
step 1: weighing various raw materials in proportion;
step 2: adding 30-40 parts of cement, 5-50 parts of lightweight aggregate, 5-25 parts of superfine micro powder, 0.0001-0.6 part of polymer latex powder, 0.1-2 parts of early strength agent, 0.1-0.3 part of thickening agent, 0.001-0.1 part of coagulant, 0.1-0.5 part of fiber and 0.001-0.15 part of powdery polycarboxylic acid water reducing agent into a dry mixer;
and step 3: adding water into the water of the dry mixer, and uniformly mixing the water and the raw materials.
The cement is one or more of Portland cement, ordinary Portland cement, superfine Portland cement and aluminate cement; the lightweight aggregate is one or more of hollow glass beads, expanded vitrified micro-beads, expanded perlite, closed-cell perlite, granulated foam glass and vermiculite; the superfine micro powder is one or more of superfine silicon micro powder, superfine heavy calcium carbonate powder, superfine slag powder and superfine fly ash powder; the polymer latex powder is one or more of vinyl acetate and ethylene copolymer rubber powder, ethylene, vinyl chloride and vinyl metasilicate ternary copolymer rubber powder, vinyl acetate, ethylene and higher fatty acid vinyl ester ternary copolymer rubber powder, vinyl acetate and higher fatty acid vinyl ester copolymer rubber powder, acrylate and styrene copolymer rubber powder and vinyl acetate homopolymerization rubber powder; the early strength agent is one or more of tricalcium silicate, anhydrous calcium sulphoaluminate and tetracalcium aluminoferrite; the thickening agent is one or more of guar gum ether, cellulose ether and bentonite; the coagulant is one or more of sodium aluminate, potassium aluminate, aluminum sulfate, potassium silicate, potassium sulfate and ammonium sulfate; the fiber is one or more of synthetic fiber, glass fiber, basalt fiber, wood fiber and steel fiber; the plasticizer is one or more of powdery sodium alginate polycarboxylic acid water reducing agent, acrylic acid polycarboxylic acid water reducing agent, methacrylic acid polycarboxylic acid water reducing agent and maleic anhydride polycarboxylic acid water reducing agent.
Example 1
A light heat-insulation dry-mixed mortar for 3D printing comprises the following raw materials in parts by weight: 30 parts of aluminate cement, 50 parts of hollow glass beads, 19 parts of superfine calcium carbonate powder, 0.5 part of polymer emulsion powder, 0.12 part of early strength agent, 0.0086 part of thickening agent, 0.02 part of stabilizing agent, 0.002 part of coagulant, 0.3 part of synthetic fiber and 0.05 part of powdery sodium alginate polycarboxylic acid water reducing agent.
In this example, the following raw materials in parts by weight were used: 30 parts of aluminate cement, 50 parts of hollow glass beads, 19 parts of superfine calcium carbonate powder, 0.5 part of polymer emulsion powder, 0.12 part of early strength agent, 0.0086 part of thickening agent, 0.02 part of stabilizer, 0.002 part of coagulant, 0.3 part of synthetic fiber and 0.05 part of powdery sodium alginate polycarboxylic acid water reducer are added into a dry mixer for physical mixing, uniformly mixed, added with water and uniformly stirred to prepare the 3D printing light heat-insulating dry-mixed mortar.
The light heat-insulation dry-mixed mortar for 3D printing comprises the following steps:
step 1: weighing various raw materials in proportion;
step 2: adding 30 parts of aluminate cement, 50 parts of hollow glass beads, 19 parts of superfine calcium carbonate powder, 0.5 part of polymer latex powder, 0.12 part of early strength agent, 0.0086 part of thickening agent, 0.02 part of stabilizer, 0.002 part of coagulant, 0.3 part of synthetic fiber and 0.05 part of powdery sodium alginate polycarboxylic acid water reducer into a dry mixer;
and step 3: adding water into the water of the dry mixer, and uniformly mixing the water and the raw materials.
Example 2
The light heat-insulating dry-mixed mortar for 3D printing comprises 32 parts of aluminate cement, 55 parts of hollow glass beads, 12 parts of superfine silica powder, 0.435 part of polymer emulsion powder, 0.2 part of early strength agent, 0.006 part of thickening agent, 0.055 part of stabilizer, 0.001 part of coagulant, 0.27 part of basalt fiber and 0.033 part of acrylic acid polycarboxylic acid water reducer.
In this example, the following raw materials in parts by weight were used: 32 parts of aluminate cement, 55 parts of hollow glass beads, 12 parts of superfine silica powder, 0.435 parts of polymer emulsion powder, 0.2 part of early strength agent, 0.006 part of thickening agent, 0.055 part of stabilizer, 0.001 part of coagulant, 0.27 part of basalt fiber and 0.033 part of acrylic acid polycarboxylate superplasticizer are added into a dry mixer for physical mixing, uniformly mixed, added with water and uniformly stirred to prepare the 3D printing light heat-insulating dry-mixed mortar.
The light heat-insulation dry-mixed mortar for 3D printing comprises the following steps:
step 1: weighing various raw materials in proportion;
step 2: adding 32 parts of aluminate cement, 55 parts of hollow glass beads, 12 parts of superfine silica powder, 0.435 part of polymer latex powder, 0.2 part of early strength agent, 0.006 part of thickening agent, 0.055 part of stabilizer, 0.001 part of coagulant, 0.27 part of basalt fiber and 0.033 part of acrylic acid polycarboxylic acid water reducer into a dry mixer;
and step 3: adding water into the water of the dry mixer, and uniformly mixing the water and the raw materials.
Example 3
The light heat-insulating dry-mixed mortar for 3D printing comprises 34 parts of aluminate cement, 56 parts of hollow glass beads, 8.9 parts of superfine slag powder, 0.49 part of polymer emulsion powder, 0.15 part of early strength agent, 0.007 part of thickening agent, 0.04 part of stabilizer, 0.003 part of coagulant, 0.4 part of glass fiber and 0.01 part of powdery sodium alginate polycarboxylic acid water reducer.
In this example, the following raw materials in parts by weight were used: 34 parts of aluminate cement, 56 parts of hollow glass beads, 8.9 parts of superfine slag powder, 0.49 part of polymer emulsion powder, 0.15 part of early strength agent, 0.007 part of thickening agent, 0.04 part of stabilizer, 0.003 part of coagulant, 0.4 part of glass fiber and 0.01 part of powdery sodium alginate polycarboxylate water reducer are added into a dry mixer for physical mixing, uniformly mixed, added with water and uniformly stirred to prepare the 3D printing light heat-insulating dry-mixed mortar.
The light heat-insulation dry-mixed mortar for 3D printing comprises the following steps:
step 1: weighing various raw materials in proportion;
step 2: adding 34 parts of aluminate cement, 56 parts of hollow glass beads, 8.9 parts of superfine slag powder, 0.49 part of polymer emulsion powder, 0.15 part of early strength agent, 0.007 part of thickening agent, 0.04 part of stabilizer, 0.003 part of coagulant, 0.4 part of glass fiber and 0.01 part of powdery sodium alginate polycarboxylic acid water reducer into a dry mixer;
and step 3: adding water into the water of the dry mixer, and uniformly mixing the water and the raw materials.
Example 4
The light heat-insulating dry-mixed mortar for 3D printing comprises 38 parts of Portland cement, 40 parts of hollow glass beads, 20 parts of ultrafine fly ash, 1 part of polymer latex powder, 0.2 part of early strength agent, 0.01 part of thickening agent, 0.1 part of stabilizer, 0.04 part of coagulant, 0.6 part of steel fiber and 0.05 part of powdery sodium alginate polycarboxylate superplasticizer.
In this example, the following raw materials in parts by weight were used: 38 parts of Portland cement, 40 parts of hollow glass beads, 20 parts of ultrafine fly ash, 1 part of polymer latex powder, 0.2 part of early strength agent, 0.01 part of thickening agent, 0.1 part of stabilizing agent, 0.04 part of coagulant, 0.6 part of steel fiber and 0.05 part of powdery sodium alginate polycarboxylic acid water reducer, and the components are added into a dry mixer for physical mixing, uniformly mixed, added with water and uniformly stirred to prepare the 3D printing light heat-insulating dry-mixed mortar.
The light heat-insulation dry-mixed mortar for 3D printing comprises the following steps:
step 1: weighing various raw materials in proportion;
step 2: adding 38 parts of Portland cement, 40 parts of hollow glass beads, 20 parts of ultrafine fly ash, 1 part of polymer latex powder, 0.2 part of early strength agent, 0.01 part of thickening agent, 0.1 part of stabilizing agent, 0.04 part of coagulant, 0.6 part of steel fiber and 0.05 part of powdery sodium alginate polycarboxylic acid water reducer into a dry mixer;
and step 3: adding water into the water of the dry mixer, and uniformly mixing the water and the raw materials.
Example 5
The light heat-insulating dry-mixed mortar for 3D printing comprises 30 parts of superfine portland cement, 60 parts of hollow glass beads, 9 parts of superfine heavy calcium carbonate powder, 0.5 part of polymer emulsion powder, 0.1 part of an early strength agent, 0.01 part of a thickening agent, 0.02 part of a stabilizer, 0.05 part of a coagulant, 0.3 part of steel fiber and 0.02 part of a powdery sodium alginate polycarboxylic acid water reducer.
In this example, the following raw materials in parts by weight were used: 30 parts of superfine portland cement, 60 parts of hollow glass beads, 9 parts of superfine heavy calcium carbonate powder, 0.5 part of polymer latex powder, 0.1 part of early strength agent, 0.01 part of thickening agent, 0.02 part of stabilizer, 0.05 part of coagulant, 0.3 part of steel fiber and 0.02 part of powdery sodium alginate polycarboxylic acid water reducer, adding into a dry mixer for physical mixing, uniformly mixing, adding water and uniformly stirring to prepare the 3D printing light heat-insulating dry-mixed mortar.
The light heat-insulation dry-mixed mortar for 3D printing comprises the following steps:
step 1: weighing various raw materials in proportion;
step 2: adding 30 parts of superfine portland cement, 60 parts of hollow glass beads, 9 parts of superfine heavy calcium carbonate powder, 0.5 part of polymer latex powder, 0.1 part of early strength agent, 0.01 part of thickening agent, 0.02 part of stabilizer, 0.05 part of coagulant, 0.3 part of steel fiber and 0.02 part of powdery sodium alginate polycarboxylic acid water reducer into a dry mixer;
and step 3: adding water into the water of the dry mixer, and uniformly mixing the water and the raw materials.
Example 6
The light heat-insulating dry-mixed mortar for 3D printing comprises 40 parts of aluminate cement, 51 parts of hollow glass beads, 5 parts of superfine heavy calcium carbonate powder, 0.1 part of polymer emulsion powder, 2 parts of an early strength agent, 1 part of a thickening agent, 0.15 part of a stabilizer, 0.1 part of a coagulant, 0.5 part of steel fiber and 0.15 part of a powdery sodium alginate polycarboxylic acid water reducing agent.
In this example, the following raw materials in parts by weight were used: 40 parts of aluminate cement, 51 parts of hollow glass beads, 5 parts of superfine heavy calcium carbonate powder, 0.1 part of polymer emulsion powder, 2 parts of early strength agent, 1 part of thickening agent, 0.15 part of stabilizing agent, 0.1 part of coagulant, 0.5 part of steel fiber and 0.15 part of powdery sodium alginate polycarboxylic acid water reducer, adding into a dry mixer for physical mixing, uniformly mixing, adding water and uniformly stirring to prepare the 3D printing light heat-insulating dry-mixed mortar.
The light heat-insulation dry-mixed mortar for 3D printing comprises the following steps:
step 1: weighing various raw materials in proportion;
step 2: adding 40 parts of aluminate cement, 51 parts of hollow glass beads, 5 parts of superfine heavy calcium carbonate powder, 0.1 part of polymer emulsion powder, 2 parts of early strength agent, 1 part of thickening agent, 0.15 part of stabilizing agent, 0.1 part of coagulant, 0.5 part of steel fiber and 0.15 part of powdery sodium alginate polycarboxylic acid water reducer into a dry mixer;
and step 3: adding water into the water of the dry mixer, and uniformly mixing the water and the raw materials.
The results of the experiment are shown in table 1.
TABLE 1 test results Table
The mortar adopts aggregate hollow porous glass beads to replace natural sand and other light materials. In the face of the present day that the resources are increasingly in shortage, the new thermal insulation material aggregate is made of waste glass and can be completely recycled. Has the effect of non-flammability.
It is particularly noted that the printing method can be used for a mortar 3D printer, the problems of the existing building energy-saving system are thoroughly solved, the process bottleneck of the existing heat-insulating material is broken through, the closed cell cavity structure is printed out by combining bionics, the strength loss caused by the fact that the traditional construction steel bar is not adopted in the 3D printing building is made up, the inorganic heat-insulating material and the wall body are integrally constructed, the problems of long construction period, hollowing, cracking, falling and the like are solved, the printed heat-insulating wall body is firmly and safely bonded, the national material reduction construction policy is met, the combination of material increasing and material reducing processes is realized, the tensile bonding strength is greater than or equal to 0.3MPa, the 28-day compressive strength is greater than or equal to 0.8N/mm, the dry density is 125kg/m, the heat conduction coefficient is 0.04W/(m) K), and the fire resistance level A; the hollow porous glass beads adopted in the patent are made of waste glass, so that the damage to natural resources is reduced, and the cyclic and repeated recycling can be realized. The wall material is light in weight, energy-saving, waste-utilizing, composite and multifunctional.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The light heat-insulation and heat-preservation dry-mixed mortar for 3D printing is characterized by comprising the following raw materials in parts by weight: 30-40 parts of cement, 5-50 parts of lightweight aggregate, 5-25 parts of superfine micro powder, 0.0001-0.6 part of polymer emulsion powder, 0.1-2 parts of early strength agent, 0.1-0.3 part of thickening agent, 0.001-0.1 part of coagulant, 0.1-0.5 part of fiber and 0.001-0.15 part of powdery polycarboxylic acid water reducing agent.
2. The light heat-insulating dry-mixed mortar for 3D printing according to claim 1, which is characterized by comprising the following raw materials in parts by weight: the cement is aluminate cement, the lightweight aggregate is hollow glass beads, the superfine micro powder is superfine calcium carbonate powder, the fiber is synthetic fiber, the powdery polycarboxylate water reducer is a powdery sodium alginate polycarboxylate water reducer, 30 parts of aluminate cement, 50 parts of hollow glass beads, 19 parts of superfine calcium carbonate powder, 0.5 part of polymer latex powder, 0.12 part of early strength agent, 0.0086 part of thickening agent, 0.02 part of stabilizer, 0.002 part of coagulant, 0.3 part of synthetic fiber and 0.05 part of powdery sodium alginate polycarboxylate water reducer.
3. The light heat-insulating dry-mixed mortar for 3D printing according to claim 1, which is characterized by comprising the following raw materials in parts by weight: the cement adopts aluminate cement, the lightweight aggregate adopts hollow glass beads, superfine slag powder is adopted to the superfine miropowder, glass fiber is adopted to the fibre, likepowder polycarboxylate water reducing agent adopts likepowder sodium alginate polycarboxylate water reducing agent, 34 parts of aluminate cement, 56 parts of hollow glass beads, 8.9 parts of superfine slag powder, 0.49 parts of polymer emulsion powder, 0.15 parts of early strength agent, 0.007 parts of thickening agent, 0.04 parts of stabilizer, 0.003 parts of coagulant, 0.4 parts of glass fiber and 0.01 parts of likepowder sodium alginate polycarboxylate water reducing agent.
4. The light heat-insulating dry-mixed mortar for 3D printing according to claim 1, which is characterized by comprising the following raw materials in parts by weight: the cement is portland cement, the lightweight aggregate is hollow glass beads, the superfine micropowder is superfine fly ash, the fiber is steel fiber, the powdery polycarboxylate water reducer is a powdery sodium alginate polycarboxylate water reducer, 38 parts of portland cement, 40 parts of hollow glass beads, 20 parts of superfine fly ash, 1 part of polymer latex powder, 0.2 part of an early strength agent, 0.01 part of a thickening agent, 0.1 part of a stabilizer, 0.04 part of a coagulant, 0.6 part of steel fiber and 0.05 part of a powdery sodium alginate polycarboxylate water reducer.
5. The light heat-insulating dry-mixed mortar for 3D printing according to claim 1, which is characterized by comprising the following raw materials in parts by weight: the cement is aluminate cement, the lightweight aggregate is hollow glass beads, the superfine micropowder is superfine heavy calcium carbonate powder, the fiber is steel fiber, the powdery polycarboxylate water reducer is a powdery sodium alginate polycarboxylate water reducer, the aluminate cement is 40 parts, the hollow glass beads are 51 parts, the superfine heavy calcium carbonate powder is 5 parts, the polymer latex powder is 0.1 part, the early strength agent is 2 parts, the thickening agent is 1 part, the stabilizing agent is 0.15 part, the coagulant is 0.1 part, the steel fiber is 0.5 part, and the powdery sodium alginate polycarboxylate water reducer is 0.15 part.
6. The light heat-insulating dry-mixed mortar for 3D printing according to any one of claims 1 to 5, which is characterized by comprising the following steps:
step 1: weighing various raw materials in proportion;
step 2: adding cement, lightweight aggregate, superfine micropowder, polymer latex powder, an early strength agent, a stabilizer, fiber and a powdery polycarboxylic acid water reducing agent into a dry mixer;
and step 3: adding water into the water of the dry mixer, and uniformly mixing the water and the raw materials.
7. The light-weight heat-insulating dry-mixed mortar for 3D printing according to any one of claims 1 to 5, wherein the cement is one or more of portland cement and aluminate cement.
8. The light heat-insulating dry-mixed mortar for 3D printing according to any one of claims 1 to 5, wherein the light aggregate is one or a mixture of hollow glass beads, expanded vitrified beads, expanded perlite, closed-cell perlite, granulated foam glass and vermiculite.
9. The light heat-insulation and heat-preservation dry-mixed mortar for 3D printing according to any one of claims 1 to 5, wherein the polymer latex powder is one or a mixture of vinyl acetate and ethylene copolymer rubber powder, ethylene and vinyl chloride and vinyl orthosilicate terpolymer rubber powder, vinyl acetate and ethylene and higher fatty acid vinyl ester copolymer rubber powder, vinyl acetate and higher fatty acid vinyl ester copolymer rubber powder, acrylate and styrene copolymer rubber powder and vinyl acetate homopolymer rubber powder.
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Application publication date: 20211029 |