CN112159186A - Anti-crack repair mortar and preparation method thereof - Google Patents
Anti-crack repair mortar and preparation method thereof Download PDFInfo
- Publication number
- CN112159186A CN112159186A CN202010886552.2A CN202010886552A CN112159186A CN 112159186 A CN112159186 A CN 112159186A CN 202010886552 A CN202010886552 A CN 202010886552A CN 112159186 A CN112159186 A CN 112159186A
- Authority
- CN
- China
- Prior art keywords
- repair mortar
- gypsum
- stirrer
- mortar
- cement clinker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C04B28/14—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
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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 discloses anti-crack repair mortar and a preparation method thereof. The anti-crack repair mortar comprises the following raw materials in percentage by weight: 5-20% of low-carbon cement clinker; 5-20% of gypsum; 60-80% of blast furnace slag powder; 0-3% of an additive, quartz sand and drinking water; wherein, the quartz sand: 1-3 of low-carbon cement clinker, and drinking water: the low-carbon cement clinker is 0.25-0.5. The test result of the anti-cracking repair mortar disclosed by the invention shows that the 3h rupture strength of the anti-cracking mortar exceeds 2.5MPa, the 6h rupture strength exceeds 3.0MPa, the 1d rupture strength exceeds 4.0MPa, the 3d rupture strength exceeds 8.0MPa, the 7d rupture strength exceeds 10.0MPa, the 28d rupture strength exceeds 12.0MPa, negative shrinkage strain does not appear in 28d, and the anti-cracking repair mortar has excellent anti-cracking performance.
Description
Technical Field
The invention relates to the technical field of mortar, in particular to anti-cracking repair mortar and a preparation method thereof.
Background
The mortar cracking not only directly affects the safety, durability and functionality of the infrastructures such as buildings, but also obviously increases the maintenance cost, and is a difficult problem which troubles the engineering field.
The cracks of the cement mortar are caused by various reasons, one of the main reasons is improper raw material selection and blending, and the shrinkage of the cement mortar is large and the cement mortar is cracked due to the adoption of low-grade cement and fine aggregate; the workability is improved by simply adding gypsum or lime powder into the ingredients of the cement mortar, but the strength of the mortar is obviously reduced, the shearing resistance and the bonding strength are reduced, and the mortar is easy to bulge and crack. The temperature change causes the expansion or the contraction of the wall body, and because the difference between the thermal expansion coefficient and the elastic modulus of different materials is large, the temperature stress generated by the thermal expansion is larger than the tensile strength of cement mortar, so that the mortar generates cracks. Most of the outer wall cement mortar is exposed to the sun, the temperature of a mortar layer can greatly exceed the air temperature and even is more than one time higher than the outdoor temperature, and the generated temperature stress causes severe temperature stress induced cracking. The outer wall cement mortar is exposed in the air for a long time, the outer wall cement mortar is usually expanded or contracted due to the change of weather dry-wet cycle, and when the contraction stress is greater than the tensile strength of the mortar, the mortar is bound to generate cracks.
At present, in order to reduce the cracking phenomenon of mortar, scientific researches and enterprises mostly adopt a technical approach of adding fibers, rubber powder and other additives, and although the crack resistance of the mortar is improved, the cost of raw materials is also obviously increased. Patent No. CN110028287A discloses a dry-mixed anti-crack mortar, which adopts more than 10 raw materials such as fly ash, silica fume, metakaolin, slag powder, a coagulation regulator, a water-retaining agent, a water-reducing agent, a superplasticizer, a thickener, rubber powder, fiber and the like, not only obviously improves the cost of the raw materials, but also increases the complexity of the production process, and the homogeneity of the mortar product is difficult to ensure. The patent with the application number of CN201510384641.6 discloses an anti-crack mortar and a preparation method thereof, cement, fly ash, quartz sand, hydroxypropyl methyl cellulose, anti-crack special rubber powder, wood fiber and pp short fiber are mixed and stirred and then packaged in bags to prepare a finished product, and the product has the advantages of high safety, long service life, low cost, good strength, low heat conductivity coefficient and good anti-crack effect, but has the problems of too many types of raw materials, complex production process links and difficult control of the uniformity of the product quality.
In addition, the production of one ton of cement clinker releases approximately 0.9 ton of carbon dioxide (CO)2). In recent years, with the worldwide demand for cementWith the growing raw material resources, energy resources and CO2 emission certificates and rising production costs of bleed air, the development of a large amount of industrial solid waste for replacing cementitious materials is becoming a focus of political, scientific and economic concern. Therefore, the bulk industrial solid waste forms a major challenge to the living environment, no large-scale and clean solution is available at present, and the research and development of the technology for resource utilization of the bulk solid waste as high as possible and sustainable is of great significance.
In the prior art, application number 201610034309.1 discloses a low-carbon cement clinker and a preparation method and application thereof. The invention aims to provide a cement clinker which has low calcination temperature, high content of high-activity beta-dicalcium silicate and high hydration activity, has strength index capable of meeting the actual engineering requirement, and can be used as a better ingredient of anti-crack repair mortar.
Disclosure of Invention
The invention aims to provide anti-crack repair mortar and a preparation method thereof, and aims to solve the technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
the anti-crack repair mortar comprises the following raw materials in percentage by weight: 5-20% of low-carbon cement clinker; 5-20% of gypsum; 60-80% of blast furnace slag powder; 0-3% of an additive, quartz sand and drinking water; wherein, the quartz sand: 1-3 of low-carbon cement clinker, and drinking water: the low-carbon cement clinker is 0.25-0.5.
As a further scheme of the invention, the low-carbon cement clinker accounts for 5-15% by weight, preferably 5-10% by weight.
As a further scheme of the invention, the gypsum is anhydrous gypsum, desulfurized gypsum, phosphogypsum, fluorgypsum or natural dihydrate gypsum, wherein the anhydrous gypsum is required to be used when the bagged repair mortar is produced, and any one of the wet-mixed mortar can be selected.
As a further aspect of the invention, the gypsum has a calcium sulfate content of greater than or equal to 85%, preferably greater than or equal to 90%, and even more preferably greater than or equal to 95%; the weight percentage of the gypsum is 7.5-17.5%, and more preferably 10-15%.
As a further scheme of the invention, the specific surface area of the blast furnace slag powder is more than or equal to 5000cm2/g, preferably more than or equal to 5500cm2/g, and more preferably more than or equal to 6000cm2/g, and the activity index meets the technical index requirements specified by the standard of GBT 18046-.
As a further aspect of the invention, Al of the blast furnace slag powder2O3The content is 10% or more, preferably Al2O3The content is more than or equal to 12 percent, and Al is preferred2O3The content is more than or equal to 14 percent; the CaO content of the blast furnace slag powder is more than or equal to 35 percent, preferably more than or equal to 37 percent, and more preferably more than or equal to 39 percent;
as a further scheme of the invention, the weight percentage of the high furnace slag powder is 65-75%, and the preferable weight percentage is 68-72%;
as a further scheme of the invention, the particle size of the silica sand meets the continuous gradation distribution, and the content of the silicon dioxide is more than or equal to 85 percent, preferably more than or equal to 90 percent, and more preferably more than or equal to 95 percent;
as a further scheme of the invention, the additive comprises one or a combination of several of a water reducing agent, an air entraining agent, a thickening agent, a setting time regulator, a thixotropic agent and a water-retaining agent, wherein the water reducing agent is a powder or liquid polycarboxylic acid system, the air entraining agent is sodium dodecyl cyclamate or polyethers or proteins, the thickening agent is dextrin or polyethylene glycol or polyacrylamide or bentonite, the setting time regulator is sodium gluconate or boric acid or tartaric acid or citric acid or polyphosphoric acid or sodium salt of polyphosphoric acid, the thixotropic agent is gypsum or bentonite, and the water-retaining agent is EVA rubber powder.
A preparation method of anti-crack repair mortar comprises the following preparation steps:
1) weighing low-carbon cement clinker, blast furnace slag powder, gypsum, quartz sand and reference water in proportion (by weight);
2) putting the low-carbon cement clinker, the blast furnace slag powder, the gypsum and the powder admixture into a stirrer, and stirring for 2 min;
3) then putting the quartz sand into a stirrer, and stirring for 30 s;
4) then pouring the 2/3 mixed water into a stirrer, and stirring for 90 s;
5) then pouring the liquid admixture into a stirrer, washing a container containing the liquid admixture by using the residual 1/3 mixed water, pouring the liquid admixture into the stirrer, and directly pouring the residual 1/3 mixed water into the stirrer to stir for 120s if no liquid admixture exists;
6) and preparing the anti-crack repair mortar for later use.
The invention has the beneficial effects that: the components of the powder, the quartz sand, the mixing water and the admixture with optimized proportion of the anti-crack repair mortar are adjusted according to the requirements of construction environmental conditions. Stirring and forming (4cm multiplied by 16cm test mould), curing for 3h at 20 +/-0.5 ℃ and the relative humidity of more than or equal to 95%, demoulding, and testing the compression strength and the rupture strength of 3h, 6h, 1d, 3d, 7d, 28d, 56d and 91 d. The expansion deformation is limited according to the standard requirement of GB 23439-2009 concrete expanding agent. Test results show that the anti-cracking mortar has the 3h rupture strength of more than 2.5MPa, the 6h rupture strength of more than 3.0MPa, the 1d rupture strength of more than 4.0MPa, the 3d rupture strength of more than 8.0MPa, the 7d rupture strength of more than 10.0MPa, the 28d rupture strength of more than 12.0MPa, no negative shrinkage strain in 28d and excellent anti-cracking performance.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, 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 powder material component A of the raw materials is low-carbon cement clinker, blast furnace slag powder and gypsum; component B quartz sand; the component C is mixed with water, and the component D is an additive, and the raw materials are weighed according to the weight ratio:
the powder material A in the raw materials accounts for 100 percent of the weight of the powder material:
a low-carbon cement clinker: 5 percent;
gypsum: 15 percent;
blast furnace slag powder: 80 percent;
the raw material comprises a quartz sand component B: b, A is 3.0;
the drinking water component "C" of the raw material: c, A is 0.50;
the additive component D of the raw material is as follows: 0% (based on the weight of the powder material, externally doped). Then, the stirring procedure was:
1. putting the low-carbon cement clinker, the blast furnace slag powder and the gypsum into a stirrer, and stirring for 2 min;
2. then, putting the quartz sand into a stirrer, and stirring for 30 s;
3. then, pouring the 2/3 mixed water into a stirrer, and stirring for 90 s;
4. then, pouring the residual 1/3 mixed water into a stirrer, and stirring for 60 s;
5. and finally, pouring the liquid admixture into a stirrer, and stirring at a high speed for 120s to prepare the anti-crack repair mortar for later use.
Stirring and forming (4cm multiplied by 16cm test mould), curing for 3h at 20 +/-0.5 ℃ and the relative humidity of more than or equal to 95%, demoulding, and testing the compression strength and the rupture strength of 3h, 6h, 1d, 3d, 7d, 28d, 56d and 91 d. The expansion deformation is limited according to the standard requirement of GB 23439-2009 concrete expanding agent. The test result shows that the 3h rupture strength of the anti-crack mortar is 2.61MPa, the 6h rupture strength is 3.25MPa, the 1d rupture strength is 4.50MPa, the 3d rupture strength is 8.57MPa, the 7d rupture strength is 10.20MPa, the 28d rupture strength is 12.42MPa, and negative shrinkage strain does not appear in 28 d.
Example 2
The powder material component A of the raw materials is low-carbon cement clinker, blast furnace slag powder and gypsum; component B quartz sand; the component C is mixed with water, and the component D is an additive, and the raw materials are weighed according to the weight ratio:
the powder material A in the raw materials accounts for 100 percent of the weight of the powder material:
a low-carbon cement clinker: 5 percent;
gypsum: 12.5 percent;
blast furnace slag powder: 82.5 percent;
the raw material comprises a quartz sand component B: b, A is 2.5;
the drinking water component "C" of the raw material: c, A is 0.45;
the additive component D of the raw material is as follows: 0.5 percent (based on the weight of the powder material, externally doped). Then, the stirring procedure was:
1. putting the low-carbon cement clinker, the blast furnace slag powder and the gypsum into a stirrer, and stirring for 2 min;
2. then, putting the quartz sand into a stirrer, and stirring for 30 s;
3. then, pouring the 2/3 mixed water into a stirrer, and stirring for 90 s;
4. then, pouring the residual 1/3 mixed water into a stirrer, and stirring for 60 s;
5. then, the liquid admixture is poured into a stirrer, the container containing the liquid admixture is cleaned by using the residual 1/3 mixed water, and the liquid admixture is poured into the stirrer, if no liquid admixture exists, the residual 1/3 mixed water is directly poured into the stirrer and stirred for 120 s;
6. and preparing the anti-crack repair mortar for later use.
Stirring and forming (4cm multiplied by 16cm test mould), curing for 3h at 20 +/-0.5 ℃ and the relative humidity of more than or equal to 95%, demoulding, and testing the compression strength and the rupture strength of 3h, 6h, 1d, 3d, 7d, 28d, 56d and 91 d. The expansion deformation is limited according to the standard requirement of GB 23439-2009 concrete expanding agent. The test result shows that the 3h rupture strength of the anti-crack mortar is 2.94MPa, the 6h rupture strength is 3.75MPa, the 1d rupture strength is 4.87MPa, the 3d rupture strength is 9.52MPa, the 7d rupture strength is 10.97MPa, the 28d rupture strength is 12.72MPa, and negative shrinkage strain does not appear in 28 d.
Example 3
The powder material component A of the raw materials is low-carbon cement clinker, blast furnace slag powder and gypsum; component B quartz sand; the component C is mixed with water, and the component D is an additive, and the raw materials are weighed according to the weight ratio:
the powder material A in the raw materials accounts for 100 percent of the weight of the powder material:
a low-carbon cement clinker: 10 percent;
gypsum: 15 percent;
blast furnace slag powder: 75 percent;
the raw material comprises a quartz sand component B: b, A is 2.0;
the drinking water component "C" of the raw material: c, A is 0.40;
the additive component D of the raw material is as follows: 1.5 percent (based on the weight of the powder material, externally doped). Then, the stirring procedure was:
1. putting the low-carbon cement clinker, the blast furnace slag powder and the gypsum into a stirrer, and stirring for 2 min;
2. then, putting the quartz sand into a stirrer, and stirring for 30 s;
3. then, pouring the 2/3 mixed water into a stirrer, and stirring for 90 s;
4. then, pouring the residual 1/3 mixed water into a stirrer, and stirring for 60 s;
5. then, the liquid admixture is poured into a stirrer, the container containing the liquid admixture is cleaned by using the residual 1/3 mixed water, and the liquid admixture is poured into the stirrer, if no liquid admixture exists, the residual 1/3 mixed water is directly poured into the stirrer and stirred for 120 s;
6. and preparing the anti-crack repair mortar for later use.
Stirring and forming (4cm multiplied by 16cm test mould), curing for 3h at 20 +/-0.5 ℃ and the relative humidity of more than or equal to 95%, demoulding, and testing the compression strength and the rupture strength of 3h, 6h, 1d, 3d, 7d, 28d, 56d and 91 d. The expansion deformation is limited according to the standard requirement of GB 23439-2009 concrete expanding agent. The test result shows that the 3h rupture strength of the anti-crack mortar is 3.25MPa, the 6h rupture strength is 4.05MPa, the 1d rupture strength is 5.17MPa, the 3d rupture strength is 9.88MPa, the 7d rupture strength is 11.92MPa, the 28d rupture strength is 13.92MPa, and negative shrinkage strain does not appear in 28 d.
Example 4
The powder material component A of the raw materials is low-carbon cement clinker, blast furnace slag powder and gypsum; component B quartz sand; the component C is mixed with water, and the component D is an additive, and the raw materials are weighed according to the weight ratio:
the powder material A in the raw materials accounts for 100 percent of the weight of the powder material:
a low-carbon cement clinker: 25 percent;
gypsum: 15 percent;
blast furnace slag powder: 60 percent;
the raw material comprises a quartz sand component B: b, A is 1.5;
the drinking water component "C" of the raw material: c, A is 0.35;
the additive component D of the raw material is as follows: 2.0% (by weight of the powder material, external doping), and then, the stirring procedure is as follows:
1. putting the low-carbon cement clinker, the blast furnace slag powder and the gypsum into a stirrer, and stirring for 2 min;
2. then, putting the quartz sand into a stirrer, and stirring for 30 s;
3. then, pouring the 2/3 mixed water into a stirrer, and stirring for 90 s;
4. then, pouring the residual 1/3 mixed water into a stirrer, and stirring for 60 s;
5. then, the liquid admixture is poured into a stirrer, the container containing the liquid admixture is cleaned by using the residual 1/3 mixed water, and the liquid admixture is poured into the stirrer, if no liquid admixture exists, the residual 1/3 mixed water is directly poured into the stirrer and stirred for 120 s;
6. and preparing the anti-crack repair mortar for later use.
Stirring and forming (4cm multiplied by 16cm test mould), curing for 3h at 20 +/-0.5 ℃ and the relative humidity of more than or equal to 95%, demoulding, and testing the compression strength and the rupture strength of 3h, 6h, 1d, 3d, 7d, 28d, 56d and 91 d. The expansion deformation is limited according to the standard requirement of GB 23439-2009 concrete expanding agent. The test result shows that the 3h rupture strength of the anti-crack mortar is 3.92MPa, the 6h rupture strength is 4.87MPa, the 1d rupture strength is 5.65MPa, the 3d rupture strength is 10.38MPa, the 7d rupture strength is 12.83MPa, the 28d rupture strength is 14.68MPa, and negative shrinkage strain does not appear in 28 d.
Example 5
The powder material component A of the raw materials is low-carbon cement clinker, blast furnace slag powder and gypsum; component B quartz sand; the component C is mixed with water, and the component D is an additive, and the raw materials are weighed according to the weight ratio:
the powder material A in the raw materials accounts for 100 percent of the weight of the powder material:
a low-carbon cement clinker: 15 percent;
gypsum: 15 percent;
blast furnace slag powder: 70 percent;
the raw material comprises a quartz sand component B: b, A is 1.0;
the drinking water component "C" of the raw material: c, A is 0.30;
the additive component D of the raw material is as follows: 2.5 percent (based on the weight of the powder material, doped externally). Then, the stirring procedure was:
1. putting the low-carbon cement clinker, the blast furnace slag powder and the gypsum into a stirrer, and stirring for 2 min;
2. then, putting the quartz sand into a stirrer, and stirring for 30 s;
3. then, pouring the 2/3 mixed water into a stirrer, and stirring for 90 s;
4. then, pouring the residual 1/3 mixed water into a stirrer, and stirring for 60 s;
5. then, the liquid admixture is poured into a stirrer, the container containing the liquid admixture is cleaned by using the residual 1/3 mixed water, and the liquid admixture is poured into the stirrer, if no liquid admixture exists, the residual 1/3 mixed water is directly poured into the stirrer and stirred for 120 s;
6. and preparing the anti-crack repair mortar for later use.
Stirring and forming (4cm multiplied by 16cm test mould), curing for 3h at 20 +/-0.5 ℃ and the relative humidity of more than or equal to 95%, demoulding, and testing the compression strength and the rupture strength of 3h, 6h, 1d, 3d, 7d, 28d, 56d and 91 d. The expansion deformation is limited according to the standard requirement of GB 23439-2009 concrete expanding agent. Test results show that the anti-cracking mortar has 3.12MPa of 3h flexural strength, 3.35MPa of 6h flexural strength, 7.66MPa of 1d flexural strength, 12.31MPa of 3d flexural strength, 14.89MPa of 7d flexural strength, 15.78MPa of 28d flexural strength and no negative shrinkage strain in 28 d.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The anti-crack repair mortar is characterized by comprising the following raw materials in percentage by weight: 5-20% of low-carbon cement clinker; 5-20% of gypsum; 60-80% of blast furnace slag powder; 0-3% of an additive, quartz sand and drinking water; wherein, the quartz sand: 1-3 of low-carbon cement clinker, and drinking water: the low-carbon cement clinker is 0.25-0.5.
2. The anti-crack repair mortar of claim 1, wherein the amount of the low-carbon cement clinker is 5 to 15% by weight.
3. The anti-crack repair mortar of claim 1, wherein the gypsum is anhydrite, desulfurized gypsum, phosphogypsum, fluorgypsum or natural dihydrate gypsum, wherein the anhydrite is used in the production of the bagged repair mortar, and any one of the wet-mixed mortar is selected.
4. The anti-crack repair mortar of claim 1, wherein the gypsum has a calcium sulfate content of 85% or more; the gypsum accounts for 7.5-17.5 wt%.
5. The anti-crack repair mortar of claim 1, wherein the specific surface area of the blast furnace slag powder is not less than 5000cm 2/g.
6. The crack-resistant repair mortar of claim 1, wherein the Al of the blast furnace slag powder2O3The content is more than or equal to 10 percent; the CaO content of the blast furnace slag powder is more than or equal to 35 percent.
7. The anti-crack repair mortar according to claim 1, wherein the percentage by weight of the high furnace slag powder is 65 to 75%, and more preferably 68 to 72%.
8. The anti-crack repair mortar of claim 1, wherein the silica sand has a particle size conforming to a continuous gradation distribution and a silica content of 85% or more.
9. The anti-crack repair mortar of claim 1, wherein the additive comprises one or more of a water reducing agent, an air entraining agent, a thickening agent, a setting time regulator, a thixotropic agent and a water retention agent, the water reducing agent is a powdery or liquid polycarboxylic acid system, the air entraining agent is sodium dodecyl cyclamate, polyethers or proteins, the thickening agent is dextrin, polyethylene glycol, polyacrylamide or bentonite, the setting time regulator is sodium gluconate, boric acid, tartaric acid, citric acid, polyphosphoric acid or sodium salt of polyphosphoric acid, the thixotropic agent is gypsum or bentonite, and the water retention agent is EVA rubber powder.
10. The preparation method of the anti-crack repair mortar is characterized by comprising the following preparation steps:
1) weighing low-carbon cement clinker, blast furnace slag powder, gypsum, quartz sand and reference water according to the weight proportion;
2) putting the low-carbon cement clinker, the blast furnace slag powder, the gypsum and the powder admixture into a stirrer, and stirring for 2 min;
3) then putting the quartz sand into a stirrer, and stirring for 30 s;
4) then pouring the 2/3 mixed water into a stirrer, and stirring for 90 s;
5) then pouring the liquid admixture into a stirrer, washing a container containing the liquid admixture by using the residual 1/3 mixed water, pouring the liquid admixture into the stirrer, and directly pouring the residual 1/3 mixed water into the stirrer to stir for 120s if no liquid admixture exists;
6) and preparing the anti-crack repair mortar for later use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010886552.2A CN112159186A (en) | 2020-08-28 | 2020-08-28 | Anti-crack repair mortar and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010886552.2A CN112159186A (en) | 2020-08-28 | 2020-08-28 | Anti-crack repair mortar and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112159186A true CN112159186A (en) | 2021-01-01 |
Family
ID=73859393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010886552.2A Pending CN112159186A (en) | 2020-08-28 | 2020-08-28 | Anti-crack repair mortar and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112159186A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159949A (en) * | 2022-08-01 | 2022-10-11 | 西安建筑科技大学 | Low-carbon environment-friendly self-leveling repair mortar and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503285A (en) * | 2011-11-10 | 2012-06-20 | 南京工业大学 | Polymer modified early strength repair mortar and preparation method and application thereof |
| JP2013100202A (en) * | 2011-11-09 | 2013-05-23 | Denki Kagaku Kogyo Kk | Mortar composition for repair |
| CN105669056A (en) * | 2016-01-19 | 2016-06-15 | 北京建筑材料科学研究总院有限公司 | Low-carbon cement clinker and preparation method and application thereof |
| CN106220008A (en) * | 2016-08-01 | 2016-12-14 | 郑州市王楼水泥工业有限公司 | A kind of preparation method and applications method of low-carbon cement clinker |
| CN110698150A (en) * | 2019-11-20 | 2020-01-17 | 十九冶成都建设有限公司 | Anti-crack repair mortar and preparation method thereof |
-
2020
- 2020-08-28 CN CN202010886552.2A patent/CN112159186A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013100202A (en) * | 2011-11-09 | 2013-05-23 | Denki Kagaku Kogyo Kk | Mortar composition for repair |
| CN102503285A (en) * | 2011-11-10 | 2012-06-20 | 南京工业大学 | Polymer modified early strength repair mortar and preparation method and application thereof |
| CN105669056A (en) * | 2016-01-19 | 2016-06-15 | 北京建筑材料科学研究总院有限公司 | Low-carbon cement clinker and preparation method and application thereof |
| CN106220008A (en) * | 2016-08-01 | 2016-12-14 | 郑州市王楼水泥工业有限公司 | A kind of preparation method and applications method of low-carbon cement clinker |
| CN110698150A (en) * | 2019-11-20 | 2020-01-17 | 十九冶成都建设有限公司 | Anti-crack repair mortar and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159949A (en) * | 2022-08-01 | 2022-10-11 | 西安建筑科技大学 | Low-carbon environment-friendly self-leveling repair mortar and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109704695B (en) | Early-strength cast-in-situ reactive powder concrete and preparation method thereof | |
| CN106810176A (en) | A kind of low viscosity upper flow regime strength cement-based grouting material | |
| CN111807794A (en) | Low-temperature sleeve grouting material and preparation method thereof | |
| CN108101472B (en) | Low-energy-consumption super-early-strength cement adhesive for insulator cementing and preparation method thereof | |
| CN106587788A (en) | Low-cement-content self-compacting concrete and preparation method thereof | |
| CN113277790B (en) | Slag-based highway grouting material and preparation method thereof | |
| CN110563418A (en) | Steam-curing-free ultra-high performance concrete and preparation method thereof | |
| CN114956761B (en) | Phosphogypsum-based ecological cement foam light soil and preparation method thereof | |
| CN110642582A (en) | Geopolymer-based concrete for block energy storage tower and preparation method thereof | |
| CN111662049B (en) | High-strength cement-based radioactive waste curing and fixing material | |
| CN109942238A (en) | A kind of preparation method of quick setting and rapid hardening coal gangue alkaline excitation fast repairing material | |
| CN110218055B (en) | Low-sulfur-content negative-temperature sleeve grouting material and preparation method thereof | |
| CN111807770A (en) | Ecological cement high-strength grouting material and preparation method thereof | |
| CN111943626A (en) | Gypsum-based wall leveling material and preparation method and use method thereof | |
| CN114988791A (en) | Flue grouting material doped with sulfur-rich lithium slag and preparation method and application thereof | |
| CN111003966B (en) | Sulfate-resistant low-alkali portland cement reinforcing agent and application thereof | |
| CN109293311A (en) | Ultra-high performance concrete slurry, ultra-high performance concrete and preparation method thereof | |
| CN103332956A (en) | Foamed building concrete and production method thereof | |
| CN111848093A (en) | Over-sulfur phosphogypsum phosphorus slag cement concrete product and preparation method thereof | |
| CN115925306A (en) | Dicalcium silicate activator and preparation method and application thereof | |
| CN112159186A (en) | Anti-crack repair mortar and preparation method thereof | |
| CN113716931A (en) | Non-autoclaved silicomanganese slag aerated concrete thermal insulation building block and preparation method thereof | |
| CN108640605A (en) | A kind of composition, preparation method and its application in concrete field | |
| CN112341037A (en) | Reproducible self-healing inorganic concrete proliferation agent and preparation method and application thereof | |
| CN115594450B (en) | Geopolymer ceramsite lightweight concrete and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210101 |