CN111592319B - Water-resistant gypsum mortar and preparation method thereof - Google Patents
Water-resistant gypsum mortar and preparation method thereof Download PDFInfo
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- CN111592319B CN111592319B CN202010303482.3A CN202010303482A CN111592319B CN 111592319 B CN111592319 B CN 111592319B CN 202010303482 A CN202010303482 A CN 202010303482A CN 111592319 B CN111592319 B CN 111592319B
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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
- C04B28/14—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 calcium sulfate cements
- C04B28/16—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 calcium sulfate cements containing anhydrite, e.g. Keene's cement
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- C04B2111/52—Sound-insulating 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
- 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
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- 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 relates to the technical field of building materials, in particular to a water-resistant gypsum mortar and a preparation method thereof, wherein the mortar comprises the following components: 15-80 parts of semi-hydrated fiber gypsum powder, 10-30 parts of anhydrous gypsum powder, 5-10 parts of cement, 1-10 parts of ground quartz sand, 20-75 parts of silica powder, 0.5-3 parts of bauxite, 0.1-0.3 part of copper sulfate, 0.5-3 parts of sodium lignosulfonate, 0.1-1 part of naphthalene sulfonate formaldehyde condensate, 0.05-0.5 part of ethoxylated alkyl sodium sulfide, 0.1-1 part of fiber, 0.05-0.5 part of sodium methyl silicate and 50-170 parts of water; the slurry has excellent overall configuration, and through good structural density and excellent strength, the water resistance of the slurry is improved, the energy for attenuating sound propagation is effectively consumed, and the heat insulation performance of the slurry material is improved.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a water-resistant gypsum mortar and a preparation method thereof.
Background
At present, gypsum-based thermal insulation mortar is poor in water resistance, so that popularization and application of the gypsum-based thermal insulation mortar are greatly influenced, a large amount of industrial byproduct gypsum is accumulated, effective utilization cannot be achieved, occasionally, water-resistant thermal insulation mortar is also seen, the material can only form a layer of film on the surface of the material to block capillary holes and cracks, and the material is a physical method, but can still attenuate over time, is poor in durability and waterproofness and is severely limited in practicability. For example, the patent No. CN201710373904.2 is a fluorgypsum-based repair mortar, which comprises 15-80 parts of fluorgypsum, 1-10 parts of active mineral admixture, 20-75 parts of aggregate, 0.5-3 parts of excitant, 0.5-3 parts of coagulation regulator, 0.1-1 part of water reducer, 0.05-0.5 part of water retention thickener, 0.1-1 part of redispersible latex and 0.05-0.5 part of waterproof agent, and achieves the purposes of improving strength and enhancing water resistance by forming a compact aluminosilicate three-dimensional net; but its slurry setting time is very fast, must accomplish the construction in short time and just can reach the effect for the application place receives the restriction, and keeps warm and gives sound insulation effect poor, and user experience is difficult to keep up with. For example, a water-resistant gypsum-based thermal insulation mortar disclosed in patent No. CN201610321532.4 is prepared by exciting desulfurized gypsum, mineral powder, cement, an alkali material, cellulose ether, a retarder, a water reducing agent, a thixotropic agent, polyphenyl particles, and water with an alkali excitation material to achieve the effects of high strength and good water resistance, but the slurry is not sufficiently arranged in the longitudinal network layout, and the water resistance is reduced in high-frequency use impact. Therefore, it is necessary to develop a gypsum mortar having high stability and good water resistance.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the water-resistant gypsum mortar, so that the water resistance of the mortar is improved, and a main structure formed by the mortar has better heat preservation and sound insulation effects; the mortar comprises the following components in parts by mass:
15-80 parts of semi-hydrated fiber gypsum powder, 10-30 parts of anhydrous gypsum powder, 5-10 parts of cement, 1-10 parts of ground quartz sand, 20-75 parts of silica powder, 0.5-3 parts of bauxite, 0.1-0.3 part of copper sulfate, 0.5-3 parts of sodium lignosulfonate, 0.1-1 part of naphthalene sulfonate formaldehyde condensate, 0.05-0.5 part of ethoxylated alkyl sodium sulfide, 0.1-1 part of fiber, 0.05-0.5 part of sodium methyl silicate and 50-170 parts of water.
Further, the water-resistant gypsum mortar comprises the following components in parts by weight: 44 parts of semi-hydrated fiber gypsum powder, 19 parts of anhydrous gypsum powder, 8 parts of cement, 5 parts of ground quartz sand, 31 parts of silica powder, 1 part of bauxite, 0.3 part of copper sulfate, 0.8 part of sodium lignosulfonate, 0.9 part of naphthalene sulfonate formaldehyde condensate, 0.1 part of ethoxylated alkyl sodium sulfide, 0.3 part of fiber, 0.09 part of sodium methyl silicate and 110 parts of water.
Furthermore, the fineness of the ground quartz sand is 1-3 mm.
Furthermore, the fineness of the silica powder is 0.015-0.039 mm.
Further, the length of the fiber is 0.5-0.8 mm.
Further, the fibers are formed by mixing wood fibers and glass fibers in a mass ratio of 1: 1.
The preparation method of the water-resistant gypsum mortar comprises the following steps:
(1) raw material treatment: adding the water fiber gypsum powder, the anhydrous gypsum powder, the cement and the bauxite into a ball mill, and processing into 200-mesh and 300-mesh powder;
(2) stirring: adding copper sulfate, sodium lignosulfonate, naphthalene sulfonate formaldehyde condensate, ethoxylated sodium alkyl sulfide, wood fiber and sodium methylsilicate into the powder, uniformly mixing, adding water, and stirring for 20-30 min;
(3) homogenizing: adding the ground quartz sand and the silica powder into the slurry obtained in the last step, and stirring for 15-25 min.
Compared with the prior art, the invention has the technical effects that:
aiming at the problems in the existing gypsum slurry, the invention selects raw materials pertinently, and the prepared slurry has excellent overall configuration and good structural performance by different selection of slurry fineness and addition of fibers with good three-dimensional structures. Meanwhile, the fitting degree of the fiber and other slurry components is also ensured, the overall performance of the slurry is further exerted, and the water resistance of the slurry is improved through good structural density and excellent strength. And, through the echelon setting of granularity and fiber fineness, effectively increased the variety of slurry inner structure for sound spreads into and passes through the reflection of more times in the slurry structure, effectively consumes the energy that the decay sound propagated, further reaches syllable-dividing effect, and the complexity of structure promotes moreover, has also reduced the heat conduction effect of slurry on the whole, improves the thermal insulation performance of slurry material.
Detailed Description
The technical solution of the present invention is further defined below with reference to the specific embodiments, but the scope of the claims is not limited to the description.
Example 1
The water-resistant gypsum mortar comprises the following components in parts by mass:
44 parts of semi-hydrated fiber gypsum powder, 19 parts of anhydrous gypsum powder, 8 parts of cement, 5 parts of ground quartz sand, 31 parts of silica powder, 1 part of bauxite, 0.3 part of copper sulfate, 0.8 part of sodium lignosulfonate, 0.9 part of naphthalene sulfonate formaldehyde condensate, 0.1 part of ethoxylated alkyl sodium sulfide, 0.3 part of fiber, 0.09 part of sodium methyl silicate and 110 parts of water; the fineness of the ground quartz sand is 2 mm; the fineness of the silica powder is 0.029 mm; the fiber length is 0.7 mm; the fiber is formed by mixing wood fiber and glass fiber in a mass ratio of 1: 1.
The preparation method of the water-resistant gypsum mortar of the embodiment is as follows:
(1) raw material treatment: adding the water fiber gypsum powder, the anhydrous gypsum powder, the cement and the bauxite into a ball mill, and processing into 300-mesh powder;
(2) stirring: adding copper sulfate, sodium lignosulfonate, naphthalene sulfonate formaldehyde condensate, ethoxylated sodium alkyl sulfide, wood fiber and sodium methylsilicate into the powder, uniformly mixing, adding water, and stirring for 25 min;
(3) homogenizing: adding the ground quartz sand and the silica powder into the slurry obtained in the last step, and stirring for 22 min.
Example 2
The water-resistant gypsum mortar comprises the following components in parts by weight:
15 parts of semi-hydrated fiber gypsum powder, 10 parts of anhydrous gypsum powder, 5 parts of cement, 1 part of ground quartz sand, 20 parts of silica powder, 0.5 part of bauxite, 0.1 part of copper sulfate, 0.5 part of sodium lignosulfonate, 0.1 part of naphthalene sulfonate formaldehyde condensate, 0.05 part of ethoxylated alkyl sodium sulfide, 0.1 part of fiber, 0.05 part of sodium methyl silicate and 50 parts of water; the fineness of the ground quartz sand is 1 mm; the fineness of the silica powder is 0.015 mm; the fiber length is 0.5 mm; the fiber is formed by mixing wood fiber and glass fiber in a mass ratio of 1: 1.
The preparation method of the water-resistant gypsum mortar of the embodiment is as follows:
(1) raw material treatment: adding the water fiber gypsum powder, the anhydrous gypsum powder, the cement and the bauxite into a ball mill, and processing into 200-mesh powder;
(2) stirring: adding copper sulfate, sodium lignosulfonate, naphthalene sulfonate formaldehyde condensate, ethoxylated sodium alkyl sulfide, wood fiber and sodium methylsilicate into the powder, uniformly mixing, adding water, and stirring for 20 min;
(3) homogenizing: adding the ground quartz sand and the silica powder into the slurry obtained in the last step, and stirring for 15 min.
Example 3
The water-resistant gypsum mortar comprises the following components in parts by weight:
80 parts of semi-hydrated fiber gypsum powder, 30 parts of anhydrous gypsum powder, 10 parts of cement, 10 parts of ground quartz sand, 75 parts of silica powder, 3 parts of bauxite, 0.3 part of copper sulfate, 3 parts of sodium lignosulfonate, 1 part of naphthalene sulfonate formaldehyde condensate, 0.5 part of ethoxylated alkyl sodium sulfide, 1 part of fiber, 0.5 part of sodium methyl silicate and 170 parts of water; the fineness of the ground quartz sand is 3 mm; the fineness of the silica powder is 0.039 mm; the fiber length is 0.8 mm; the fiber is formed by mixing wood fiber and glass fiber in a mass ratio of 1: 1.
The preparation method of the water-resistant gypsum mortar of the embodiment is as follows:
(1) raw material treatment: adding the water fiber gypsum powder, the anhydrous gypsum powder, the cement and the bauxite into a ball mill, and processing into 300-mesh powder;
(2) stirring: adding copper sulfate, sodium lignosulfonate, naphthalene sulfonate formaldehyde condensate, ethoxylated sodium alkyl sulfide, wood fiber and sodium methylsilicate into the powder, uniformly mixing, adding water, and stirring for 30 min;
(3) homogenizing: adding the ground quartz sand and the silica powder into the slurry obtained in the last step, and stirring for 25 min.
Example 4
The water-resistant gypsum mortar comprises the following components in parts by weight:
70 parts of semi-hydrated fiber gypsum powder, 20 parts of anhydrous gypsum powder, 8 parts of cement, 1 part of ground quartz sand, 75 parts of silica powder, 0.5 part of bauxite, 0.3 part of copper sulfate, 3 parts of sodium lignosulfonate, 0.1 part of naphthalene sulfonate formaldehyde condensate, 0.5 part of ethoxylated alkyl sodium sulfide, 0.1 part of fiber, 0.5 part of sodium methyl silicate and 50 parts of water; the fineness of the ground quartz sand is 3 mm; the fineness of the silica powder is 0.015 mm; the fiber length is 0.8 mm; the fiber is formed by mixing wood fiber and glass fiber in a mass ratio of 1: 1.
The preparation method of the water-resistant gypsum mortar of the embodiment is as follows:
(1) raw material treatment: adding the water fiber gypsum powder, the anhydrous gypsum powder, the cement and the bauxite into a ball mill, and processing into 300-mesh powder;
(2) stirring: adding copper sulfate, sodium lignosulfonate, naphthalene sulfonate formaldehyde condensate, ethoxylated sodium alkyl sulfide, wood fiber and sodium methylsilicate into the powder, uniformly mixing, adding water, and stirring for 20 min;
(3) homogenizing: adding the ground quartz sand and the silica powder into the slurry obtained in the last step, and stirring for 23 min.
Example 5
The water-resistant gypsum mortar comprises the following components in parts by weight:
60 parts of semi-hydrated fiber gypsum powder, 21 parts of anhydrous gypsum powder, 9 parts of cement, 10 parts of ground quartz sand, 20 parts of silica powder, 3 parts of bauxite, 0.3 part of copper sulfate, 0.5 part of sodium lignosulfonate, 0.1 part of naphthalene sulfonate formaldehyde condensate, 0.05 part of ethoxylated alkyl sodium sulfide, 0.1 part of fiber, 0.05 part of sodium methyl silicate and 170 parts of water; the fineness of the ground quartz sand is 3 mm; the fineness of the silica powder is 0.039 mm; the fiber length is 0.8 mm; the fiber is formed by mixing wood fiber and glass fiber in a mass ratio of 1: 1.
The preparation method of the water-resistant gypsum mortar of the embodiment is as follows:
(1) raw material treatment: adding the water fiber gypsum powder, the anhydrous gypsum powder, the cement and the bauxite into a ball mill, and processing into 300-mesh powder;
(2) stirring: adding copper sulfate, sodium lignosulfonate, naphthalene sulfonate formaldehyde condensate, ethoxylated sodium alkyl sulfide, wood fiber and sodium methylsilicate into the powder, uniformly mixing, adding water, and stirring for 30 min;
(3) homogenizing: adding the ground quartz sand and the silica powder into the slurry obtained in the last step, and stirring for 25 min.
Comparative example setup:
test examples
Slurry is prepared according to the examples 1 to 5 and the comparative examples 1 to 5, the initial setting time is tested, the flexural strength and the compressive strength are measured 28 days after solidification, and the heat preservation effect is detected; according to GB/T3096-2008 'sound environment quality standard' and GBJ 75 'building sound insulation measurement specification', an FI-01 lightweight noise striker is adopted to carry out field test on sound insulation performance of the solidified slurry.
And (3) test results:
as can be seen from the table, the slurry of the invention not only has good mechanical properties, but also the heat preservation and sound insulation effects of the embodiment are obviously superior to those of the comparison group.
Claims (7)
1. The water-resistant gypsum mortar is characterized by comprising the following components in parts by mass:
15-80 parts of semi-hydrated fiber gypsum powder, 10-30 parts of anhydrous gypsum powder, 5-10 parts of cement, 1-10 parts of ground quartz sand, 20-75 parts of silica powder, 0.5-3 parts of bauxite, 0.1-0.3 part of copper sulfate, 0.5-3 parts of sodium lignosulfonate, 0.1-1 part of naphthalene sulfonate formaldehyde condensate, 0.05-0.5 part of ethoxylated alkyl sodium sulfide, 0.1-1 part of fiber, 0.05-0.5 part of sodium methyl silicate and 50-170 parts of water.
2. The water-resistant gypsum mortar of claim 1, comprising the following components in parts by mass: 44 parts of semi-hydrated fiber gypsum powder, 19 parts of anhydrous gypsum powder, 8 parts of cement, 5 parts of ground quartz sand, 31 parts of silica powder, 1 part of bauxite, 0.3 part of copper sulfate, 0.8 part of sodium lignosulfonate, 0.9 part of naphthalene sulfonate formaldehyde condensate, 0.1 part of ethoxylated alkyl sodium sulfide, 0.3 part of fiber, 0.09 part of sodium methyl silicate and 110 parts of water.
3. The water-resistant gypsum mortar of claim 1, wherein the ground quartz sand has a fineness of 1-3 mm.
4. The water-resistant gypsum mortar of claim 1, wherein the silica flour has a fineness of 0.015 to 0.039 mm.
5. The water-resistant gypsum mortar of claim 1, wherein the fibers have a length of 0.5 to 0.8 mm.
6. The water-resistant gypsum mortar of claim 1, wherein the fibers are mixed with wood fibers and glass fibers in a mass ratio of 1: 1.
7. The water-resistant gypsum mortar of claim 1, prepared by the following steps:
(1) raw material treatment: adding the water fiber gypsum powder, the anhydrous gypsum powder, the cement and the bauxite into a ball mill, and processing into 200-mesh and 300-mesh powder;
(2) stirring: adding copper sulfate, sodium lignosulfonate, naphthalene sulfonate formaldehyde condensate, ethoxylated sodium alkyl sulfide, wood fiber and sodium methylsilicate into the powder, uniformly mixing, adding water, and stirring for 20-30 min;
(3) homogenizing: adding the ground quartz sand and the silica powder into the slurry obtained in the last step, and stirring for 15-25 min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010303482.3A CN111592319B (en) | 2020-04-17 | 2020-04-17 | Water-resistant gypsum mortar and preparation method thereof |
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| CN202010303482.3A CN111592319B (en) | 2020-04-17 | 2020-04-17 | Water-resistant gypsum mortar and preparation method thereof |
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| CN111592319B true CN111592319B (en) | 2022-05-10 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104072194A (en) * | 2014-06-30 | 2014-10-01 | 孙红芳 | Insulating layer plastering gypsum |
| CN104086148A (en) * | 2014-06-30 | 2014-10-08 | 孙红芳 | Bottom plastering gypsum powder |
| CN106699091A (en) * | 2016-11-21 | 2017-05-24 | 同济大学 | High-viscosity water-retaining plastering mortar taking phosphogypsum hydraulic composite cementing material as main material and preparation method thereof |
| CN108395180A (en) * | 2018-05-16 | 2018-08-14 | 合肥欧克斯新型建材有限公司 | A kind of gypsum base heat insulating mortar and preparation method thereof |
| CN110194642A (en) * | 2019-06-02 | 2019-09-03 | 中美建材有限公司 | A kind of water proof type plasterboard and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10737979B2 (en) * | 2017-04-20 | 2020-08-11 | United States Gypsum Company | Gypsum set accelerator and method of preparing same |
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2020
- 2020-04-17 CN CN202010303482.3A patent/CN111592319B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104072194A (en) * | 2014-06-30 | 2014-10-01 | 孙红芳 | Insulating layer plastering gypsum |
| CN104086148A (en) * | 2014-06-30 | 2014-10-08 | 孙红芳 | Bottom plastering gypsum powder |
| CN106699091A (en) * | 2016-11-21 | 2017-05-24 | 同济大学 | High-viscosity water-retaining plastering mortar taking phosphogypsum hydraulic composite cementing material as main material and preparation method thereof |
| CN108395180A (en) * | 2018-05-16 | 2018-08-14 | 合肥欧克斯新型建材有限公司 | A kind of gypsum base heat insulating mortar and preparation method thereof |
| CN110194642A (en) * | 2019-06-02 | 2019-09-03 | 中美建材有限公司 | A kind of water proof type plasterboard and preparation method thereof |
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