CN113121184A - Phosphogypsum solid waste self-leveling mortar and preparation method thereof - Google Patents
Phosphogypsum solid waste self-leveling mortar and preparation method thereof Download PDFInfo
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- CN113121184A CN113121184A CN201911383607.1A CN201911383607A CN113121184A CN 113121184 A CN113121184 A CN 113121184A CN 201911383607 A CN201911383607 A CN 201911383607A CN 113121184 A CN113121184 A CN 113121184A
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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
- C04B28/142—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 synthetic or waste calcium sulfate cements
- C04B28/143—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 synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
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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
- 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)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses phosphogypsum solid waste self-leveling mortar which comprises the following raw materials in parts by weight: 25-35 parts of phosphogypsum, 8-12 parts of sulpho-aluminosilicate cement, 4-5 parts of slag, 5-8 parts of fly ash, 10-20 parts of modified wollastonite, 5-10 parts of modified lignin, 0.6-1.2 parts of water reducing agent, 0.08-0.12 part of water-retaining agent, 0.5-0.8 part of early strength agent, 0.3-0.5 part of defoaming agent and 20-30 parts of water. The phosphogypsum solid waste self-leveling mortar provided by the invention not only can realize vibration-free self-leveling, but also has the remarkable advantages of very high surface flatness, fast strength development, good volume stability, good surface wear resistance and the like after construction; the phosphogypsum solid waste is introduced into the sulphoaluminate cement from the leveling mortar.
Description
Technical Field
The invention relates to the technical field of phosphogypsum waste utilization mortar, in particular to phosphogypsum solid waste self-leveling mortar and a preparation method thereof.
Background
The phosphogypsum is a byproduct in the phosphorus chemical industry, such as the process of decomposing phosphorite by sulfuric acid and extracting phosphoric acid, the amount of the phosphogypsum which is the byproduct of preparing 1t of phosphoric acid is about 5-7t, and the discharge amount of the phosphogypsum is different according to the quality of phosphorite resources. The phosphogypsum is light grey, light yellow or grey black powdery solid, and mainly comprises CaSO4 & 2H2O, a small amount of undecomposed phosphorite, unwashed phosphoric acid, calcium fluoride, iron, aluminum compounds, acid insoluble substances, organic matters, radioactive uranium, radium and other impurities.
The accumulated stockpiling amount of the phosphogypsum in China exceeds 2 hundred million t, but the recycling degree of the phosphogypsum is far from enough. With the continuous expansion of the production scale of phosphorus chemical industry, more and more storage of the phosphogypsum not only occupies a large amount of land, but also easily causes environmental pollution such as atmosphere, water and the like. Therefore, the comprehensive utilization and harmless treatment of the phosphogypsum become important tasks in the phosphorus chemical industry. The phosphogypsum is the most main way for realizing the effective utilization of the phosphogypsum as a building material resource. The phosphogypsum has wide effect in construction industry and can be used as a preparation raw material of self-leveling cement mortar. The phosphogypsum self-leveling mortar is a self-leveling material which is composed of phosphogypsum, a cementing material, an auxiliary cementing material, sand, an additive and the like and has high fluidity after being added with water. The self-leveling floor material has good fluidity and self-leveling function, can be quickly solidified, can be constructed on the floor material in a short time, is firmly bonded with a substrate, and has good characteristics of high compressive strength and the like.
The existing phosphogypsum self-leveling mortar is mainly prepared from conventional raw materials, and the performance is conventional, so that further discussion needs to be carried out on the existing basis.
Disclosure of Invention
The invention aims to provide phosphogypsum solid waste self-leveling mortar and a preparation method thereof, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention also provides phosphogypsum solid waste self-leveling mortar which comprises the following raw materials in parts by weight:
25-35 parts of phosphogypsum, 8-12 parts of sulpho-aluminosilicate cement, 4-5 parts of slag, 5-8 parts of fly ash, 10-20 parts of modified wollastonite, 5-10 parts of modified lignin, 0.6-1.2 parts of water reducing agent, 0.08-0.12 part of water-retaining agent, 0.5-0.8 part of early strength agent, 0.3-0.5 part of defoaming agent and 20-30 parts of water.
Preferably, the phosphogypsum solid waste self-leveling mortar comprises the following raw materials in percentage by weight:
28-32 parts of phosphogypsum, 9-11 parts of sulpho-aluminosilicate cement, 4.2-5 parts of slag, 6-7 parts of fly ash, 12-18 parts of modified wollastonite, 8-9 parts of modified lignin, 0.8-1.0 part of water reducing agent, 0.10-0.11 part of water retaining agent, 0.6-0.7 part of early strength agent, 0.4-0.48 part of defoaming agent and 24-28 parts of water.
Preferably, the phosphogypsum solid waste self-leveling mortar comprises the following raw materials in percentage by weight:
30 parts of phosphogypsum, 10 parts of sulpho-aluminosilicate cement, 4.5 parts of slag, 6.5 parts of fly ash, 15 parts of modified wollastonite, 7.5 parts of modified lignin, 0.9 part of water reducing agent, 0.10 part of water-retaining agent, 0.65 part of early strength agent, 0.4 part of defoaming agent and 25 parts of water.
Preferably, the preparation method of the modified wollastonite comprises the following steps: adding wollastonite into a sodium alginate solution for dispersing, then adjusting the pH value to 4.5-5.5, then adding an aluminum silicate solution, continuing stirring for 20-30min, after the stirring is finished, centrifugally drying, and then sending into a ball mill for ball milling to obtain the modified wollastonite.
Preferably, the specific conditions of the ball milling are as follows: adding lanthanum chloride solution in ball milling, then carrying out ball milling for 20-30min at the rotating speed of 500-.
Preferably, the modification method of the modified lignin comprises the following steps: the lignin is firstly put into rapeseed oil with the temperature of 100 ℃, then cooled to room temperature, washed with water, and then sent into a high-pressure reaction kettle to react with the leaching solution according to the weight ratio of 1:5, the reaction pressure is 20-30Mpa, the reaction time is 10-20min, and after the reaction is finished, the lignin is centrifuged and dried to obtain the modified lignin.
Preferably, the preparation method of the penetration liquid is as follows: adding the ferrous oxalate dispersion into a magnetic stirrer, then adding a rare earth lanthanum chloride solution, then adding phosphoric acid, adjusting the pH to 4.0, then adding zinc chloride, and continuously stirring until the raw materials are fully mixed to obtain a leaching solution.
Preferably, the ferrous oxalate dispersion liquid is prepared into a ferrous oxalate dispersion liquid with the mass fraction of 5-9% by adopting ferrous oxalate and deionization.
Preferably, the water-retaining agent is one or more of hydroxypropyl methyl cellulose ether, polyacrylamide, methyl cellulose and water-absorbing resin; the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent; the early strength agent is one or a mixture of more than two of sodium aluminate, lithium carbonate and anhydrous sodium sulfate; the defoaming agent is one or a mixture of more than two of organic silicon defoaming agents and polyether defoaming agents.
The invention also provides a method for preparing the phosphogypsum solid waste self-leveling mortar, which comprises the following steps: the raw materials are sequentially added into a stirrer for fully mixing, the mixing speed is 1000-1500r/min, the mixing time is 25-35min, after the mixing is finished, the curing treatment is carried out, the curing temperature is 35-40 ℃, and the curing time is 1-2 h.
Compared with the prior art, the invention has the following beneficial effects:
(1) the phosphogypsum solid waste self-leveling mortar provided by the invention not only can realize vibration-free self-leveling, but also has the remarkable advantages of very high surface flatness, fast strength development, good volume stability, good surface wear resistance and the like after construction; the phosphogypsum solid waste self-leveling mortar introduces sulphoaluminate cement, and the sulphoaluminate cement has high early strength and certain expansion effect, so that the self-leveling mortar can improve the strength, particularly the early strength, of the self-leveling mortar, can effectively avoid floor cracking and hollowing and skinning, and the wear resistance is obviously improved due to higher early strength.
(2) The wollastonite added in the invention has a needle-shaped structure, and is dispersed in the sodium alginate solution through modification treatment, then, the wollastonite is treated by an aluminum silicate solution, the stability of the wollastonite and the bonding strength between the wollastonite and the raw materials can be enhanced after the aluminum silicate treatment, and the needle-shaped structure of the wollastonite can be thinner after the treatment by ball milling, thereby the penetrating force is stronger, the lanthanum chloride solution added in the ball milling can obviously enhance the activity capability of the wollastonite in the penetrating raw materials, so that the raw materials are connected by using wollastonite as an intermediate, the bonding strength between the raw materials is greatly improved, in addition, the added lignin has stronger activity after being modified, and after being treated by the penetration liquid, the lignin has better dispersion effect in the raw materials, so that the lignin is matched with the modified wollastonite, and the properties of the material such as strength and the like are more obvious.
(3) The slag and the fly ash added in the invention have larger specific surface area, small particle size and higher mortar density, and the glass bead effect of the high-grade fly ash is beneficial to improving the slurry fluidity, while the addition of the defoaming agent can further reduce the slurry porosity, increase the mortar compactness and finally improve the mortar strength.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the phosphogypsum solid waste self-leveling mortar comprises the following raw materials in parts by weight:
25 parts of phosphogypsum, 8 parts of sulpho-aluminosilicate cement, 4 parts of slag, 5 parts of fly ash, 10 parts of modified wollastonite, 5 parts of modified lignin, 0.6 part of water reducing agent, 0.08 part of water-retaining agent, 0.5 part of early strength agent, 0.3 part of defoaming agent and 20 parts of water.
The preparation method of the modified wollastonite in the embodiment comprises the following steps: adding wollastonite into a sodium alginate solution for dispersing, then adjusting the pH value to 4.5, then adding an aluminum silicate solution, continuing stirring for 20min, after the stirring is finished, centrifugally drying, and then sending into a ball mill for ball milling to obtain the modified wollastonite.
The specific conditions of the ball milling in this example were: adding a lanthanum chloride solution in ball milling, then carrying out ball milling for 20min at the rotating speed of 500r/min, then reducing the rotating speed to 200r/min, continuing ball milling for 1h, finishing ball milling, and then calcining for 1h at the temperature of 1000 ℃.
The modification method of the modified lignin in this example is as follows: the lignin is firstly put into rapeseed oil with the temperature of 100 ℃, then cooled to room temperature, washed with water, and then sent into a high-pressure reaction kettle to react with the leaching solution according to the weight ratio of 1:5, the reaction pressure is 20Mpa, the reaction time is 10-20min, and after the reaction is finished, the lignin is centrifuged and dried to obtain the modified lignin.
The preparation method of the penetration liquid in this example was: adding the ferrous oxalate dispersion into a magnetic stirrer, then adding a rare earth lanthanum chloride solution, then adding phosphoric acid, adjusting the pH to 4.0, then adding zinc chloride, and continuously stirring until the raw materials are fully mixed to obtain a leaching solution.
The ferrous oxalate dispersion liquid of this example was prepared by ferrous oxalate and deionization to a ferrous oxalate dispersion liquid with a mass fraction of 5%.
The water-retaining agent of this example is hydroxypropyl methyl cellulose ether; the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent; the early strength agent is sodium aluminate; the defoaming agent is an organic silicon defoaming agent.
The method for preparing the phosphogypsum solid waste self-leveling mortar comprises the following steps: the raw materials are sequentially added into a stirrer to be fully mixed, the mixing speed is 1000r/min, the mixing time is 25min, after the mixing is finished, the curing treatment is carried out, the curing temperature is 35 ℃, and the curing time is 1 h.
Example 2:
the phosphogypsum solid waste self-leveling mortar comprises the following raw materials in parts by weight:
35 parts of phosphogypsum, 12 parts of sulpho-aluminosilicate cement, 5 parts of slag, 8 parts of fly ash, 20 parts of modified wollastonite, 10 parts of modified lignin, 1.2 parts of water reducing agent, 0.12 part of water-retaining agent, 0.8 part of early strength agent, 0.5 part of defoaming agent and 30 parts of water.
The preparation method of the modified wollastonite in the embodiment comprises the following steps: adding wollastonite into a sodium alginate solution for dispersing, then adjusting the pH value to 5.5, then adding an aluminum silicate solution, continuing stirring for 30min, after the stirring is finished, then centrifugally drying, and then sending into a ball mill for ball milling to obtain the modified wollastonite.
The specific conditions of the ball milling in this example were: adding lanthanum chloride solution in ball milling, then carrying out ball milling for 30min at the rotating speed of 700r/min, then reducing the rotating speed to 300r/min, continuing ball milling for 2h, finishing ball milling, and then calcining for 2h at the temperature of 1000-.
The modification method of the modified lignin in this example is as follows: the lignin is firstly put into rapeseed oil with the temperature of 100 ℃, then cooled to room temperature, washed with water, and then sent into a high-pressure reaction kettle to react with the penetration liquid according to the weight ratio of 1:5, the reaction pressure is 30Mpa, the reaction time is 20min, and after the reaction is finished, the lignin is centrifuged and dried, thus obtaining the modified lignin.
The preparation method of the penetration liquid in this example was: adding the ferrous oxalate dispersion into a magnetic stirrer, then adding a rare earth lanthanum chloride solution, then adding phosphoric acid, adjusting the pH to 4.0, then adding zinc chloride, and continuously stirring until the raw materials are fully mixed to obtain a leaching solution.
The ferrous oxalate dispersion liquid of this example was prepared by ferrous oxalate and deionization to a ferrous oxalate dispersion liquid with a mass fraction of 9%.
The water-retaining agent of this example is methyl cellulose; the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent; the early strength agent is lithium carbonate; the defoaming agent is an organic silicon defoaming agent.
The method for preparing the phosphogypsum solid waste self-leveling mortar comprises the following steps: the raw materials are sequentially added into a stirrer to be fully mixed, the mixing speed is 1500r/min, the mixing time is 35min, after the mixing is finished, the curing treatment is carried out, the curing temperature is 40 ℃, and the curing time is 2 h.
Example 3:
the phosphogypsum solid waste self-leveling mortar comprises the following raw materials in parts by weight:
30 parts of phosphogypsum, 10 parts of sulpho-aluminosilicate cement, 4.5 parts of slag, 6.5 parts of fly ash, 15 parts of modified wollastonite, 7.5 parts of modified lignin, 0.9 part of water reducing agent, 0.10 part of water-retaining agent, 0.65 part of early strength agent, 0.4 part of defoaming agent and 25 parts of water.
The preparation method of the modified wollastonite in the embodiment comprises the following steps: adding wollastonite into a sodium alginate solution for dispersing, then adjusting the pH value to 5.0, then adding an aluminum silicate solution, continuing stirring for 25min, finishing stirring, then centrifugally drying, and then sending into a ball mill for ball milling to obtain the modified wollastonite.
The specific conditions of the ball milling in this example were: adding a lanthanum chloride solution in ball milling, then carrying out ball milling for 25min at the rotating speed of 600r/min, then reducing the rotating speed to 250r/min, continuing ball milling for 1.5h, finishing ball milling, and then calcining for 1.5h at the temperature of 1250 ℃.
The modification method of the modified lignin in this example is as follows: the lignin is firstly put into rapeseed oil with the temperature of 100 ℃, then cooled to room temperature, washed with water, and then sent into a high-pressure reaction kettle to react with the penetration liquid according to the weight ratio of 1:5, the reaction pressure is 25Mpa, the reaction time is 15min, and after the reaction is finished, the lignin is centrifuged and dried, thus obtaining the modified lignin.
The preparation method of the penetration liquid in this example was: adding the ferrous oxalate dispersion into a magnetic stirrer, then adding a rare earth lanthanum chloride solution, then adding phosphoric acid, adjusting the pH to 4.0, then adding zinc chloride, and continuously stirring until the raw materials are fully mixed to obtain a leaching solution.
The ferrous oxalate dispersion liquid of this example was prepared by ferrous oxalate and deionization to a 7% mass fraction ferrous oxalate dispersion liquid.
The water-retaining agent of this example is methyl cellulose; the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent; the early strength agent is anhydrous sodium sulfate; the defoaming agent is an organic silicon defoaming agent.
The method for preparing the phosphogypsum solid waste self-leveling mortar comprises the following steps: the raw materials are sequentially added into a stirrer to be fully mixed, the mixing speed is 1250r/min, the mixing time is 30min, after the mixing is finished, the curing treatment is carried out, the curing temperature is 37.5 ℃, and the curing time is 1.5 h.
The materials of examples 1-3 were tested for their performance and the results are shown in Table 1
TABLE 1
As can be seen from Table 1, the materials of examples 1-3 of the present invention have excellent flexural strength, tensile bond strength, and abrasion resistance and fluidity.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The phosphogypsum solid waste self-leveling mortar is characterized by comprising the following raw materials in parts by weight:
25-35 parts of phosphogypsum, 8-12 parts of sulpho-aluminosilicate cement, 4-5 parts of slag, 5-8 parts of fly ash, 10-20 parts of modified wollastonite, 5-10 parts of modified lignin, 0.6-1.2 parts of water reducing agent, 0.08-0.12 part of water-retaining agent, 0.5-0.8 part of early strength agent, 0.3-0.5 part of defoaming agent and 20-30 parts of water.
2. The phosphogypsum solid waste self-leveling mortar of claim 1, which is characterized by comprising the following raw materials in percentage by weight:
28-32 parts of phosphogypsum, 9-11 parts of sulpho-aluminosilicate cement, 4.2-5 parts of slag, 6-7 parts of fly ash, 12-18 parts of modified wollastonite, 8-9 parts of modified lignin, 0.8-1.0 part of water reducing agent, 0.10-0.11 part of water retaining agent, 0.6-0.7 part of early strength agent, 0.4-0.48 part of defoaming agent and 24-28 parts of water.
3. The phosphogypsum solid waste self-leveling mortar of claim 1, which is characterized by comprising the following raw materials in percentage by weight:
30 parts of phosphogypsum, 10 parts of sulpho-aluminosilicate cement, 4.5 parts of slag, 6.5 parts of fly ash, 15 parts of modified wollastonite, 7.5 parts of modified lignin, 0.9 part of water reducing agent, 0.10 part of water-retaining agent, 0.65 part of early strength agent, 0.4 part of defoaming agent and 25 parts of water.
4. The phosphogypsum solid waste self-leveling mortar according to claim 1, which is characterized in that the preparation method of the modified wollastonite comprises the following steps: adding wollastonite into a sodium alginate solution for dispersing, then adjusting the pH value to 4.5-5.5, then adding an aluminum silicate solution, continuing stirring for 20-30min, after the stirring is finished, centrifugally drying, and then sending into a ball mill for ball milling to obtain the modified wollastonite.
5. The phosphogypsum solid waste self-leveling mortar according to claim 4, wherein the specific conditions of ball milling are as follows: adding lanthanum chloride solution in ball milling, then carrying out ball milling for 20-30min at the rotating speed of 500-.
6. The phosphogypsum solid waste self-leveling mortar according to claim 1, wherein the modification method of the modified lignin is as follows: the lignin is firstly put into rapeseed oil with the temperature of 100 ℃, then cooled to room temperature, washed with water, and then sent into a high-pressure reaction kettle to react with the leaching solution according to the weight ratio of 1:5, the reaction pressure is 20-30Mpa, the reaction time is 10-20min, and after the reaction is finished, the lignin is centrifuged and dried to obtain the modified lignin.
7. The phosphogypsum solid waste self-leveling mortar according to claim 6, wherein the preparation method of the infiltration liquid is as follows: adding the ferrous oxalate dispersion into a magnetic stirrer, then adding a rare earth lanthanum chloride solution, then adding phosphoric acid, adjusting the pH to 4.0, then adding zinc chloride, and continuously stirring until the raw materials are fully mixed to obtain a leaching solution.
8. The phosphogypsum solid waste self-leveling mortar according to claim 7, wherein the ferrous oxalate dispersion liquid is prepared by ferrous oxalate and deionization, and the mass fraction of the ferrous oxalate dispersion liquid is 5-9%.
9. The phosphogypsum solid waste self-leveling mortar as claimed in claim 1, wherein the water retention agent is one or more of hydroxypropyl methyl cellulose ether, polyacrylamide, methyl cellulose and water-absorbing resin; the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent; the early strength agent is one or a mixture of more than two of sodium aluminate, lithium carbonate and anhydrous sodium sulfate; the defoaming agent is one or a mixture of more than two of organic silicon defoaming agents and polyether defoaming agents.
10. A method of preparing the phosphogypsum solid waste self-leveling mortar as defined in any of claims 1-9, characterized in that it comprises the following steps: the raw materials are sequentially added into a stirrer for fully mixing, the mixing speed is 1000-1500r/min, the mixing time is 25-35min, after the mixing is finished, the curing treatment is carried out, the curing temperature is 35-40 ℃, and the curing time is 1-2 h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114213095A (en) * | 2021-12-31 | 2022-03-22 | 江苏尼高科技有限公司 | Alkali-activated phosphogypsum self-leveling mortar |
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| CN103553526A (en) * | 2013-10-16 | 2014-02-05 | 上海利物宝建筑科技有限公司 | Gypsum-based door and window seam filling and sealing mortar as well as preparation method and application thereof |
| CN104108918A (en) * | 2014-06-19 | 2014-10-22 | 广东省建筑科学研究院 | High performance cement-base self-leveling mortar |
| CN110436874A (en) * | 2019-09-12 | 2019-11-12 | 德清扬泰建筑材料有限公司 | A kind of high-performance ardealite based self-leveling mortar preparation method |
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- 2019-12-28 CN CN201911383607.1A patent/CN113121184A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731047A (en) * | 2012-06-11 | 2012-10-17 | 西南科技大学 | Self-leveling mortar material with phosphogypsum as filling material, and preparation method thereof |
| CN103553526A (en) * | 2013-10-16 | 2014-02-05 | 上海利物宝建筑科技有限公司 | Gypsum-based door and window seam filling and sealing mortar as well as preparation method and application thereof |
| CN104108918A (en) * | 2014-06-19 | 2014-10-22 | 广东省建筑科学研究院 | High performance cement-base self-leveling mortar |
| CN110436874A (en) * | 2019-09-12 | 2019-11-12 | 德清扬泰建筑材料有限公司 | A kind of high-performance ardealite based self-leveling mortar preparation method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114213095A (en) * | 2021-12-31 | 2022-03-22 | 江苏尼高科技有限公司 | Alkali-activated phosphogypsum self-leveling mortar |
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