CN110981343B

CN110981343B - Anti-efflorescence inorganic artificial stone floor tile

Info

Publication number: CN110981343B
Application number: CN201911293285.1A
Authority: CN
Inventors: 吴丁华; 刘鹏程; 曹毅
Original assignee: Anhui Hailong Construction Industry Co Ltd
Current assignee: Anhui Hailong Construction Industry Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2022-04-15
Anticipated expiration: 2039-12-16
Also published as: CN110981343A

Abstract

The invention discloses an anti-efflorescence inorganic artificial stone floor tile, which comprises the following raw materials: the waterproof coating comprises a main mixture, dispersible rubber powder, a silane waterproof agent, cellulose ether, an ERA200 type anti-flooding alkali agent and water, wherein the dispersible rubber powder accounts for 2-4% of the main mixture in percentage by mass; the proportion of the ERA200 type anti-efflorescence agent in the main mixture is 0.1-0.3%; the cellulose ether accounts for 0.01 to 0.05 percent of the gelled material. The inorganic artificial stone floor tile can effectively inhibit the occurrence of surface saltpetering, and effectively ensure the long-time beauty of the surface of the inorganic artificial stone floor tile; meanwhile, the compressive strength of the inorganic artificial stone with the mixture ratio reaches 120Mpa, the breaking strength reaches 15Mpa, and the service life of the inorganic artificial stone floor tile can be effectively prolonged.

Description

Anti-efflorescence inorganic artificial stone floor tile

Technical Field

The invention relates to the technical field of inorganic artificial stones, in particular to an anti-efflorescence inorganic artificial stone floor tile.

Background

The artificial inorganic stone is prepared with cementing material, aggregate, additive and other admixtures as main material and through mixing, curing in steam room or at normal temperature, polishing and other surface treatment to obtain different decorative surfaces. Because of its high hardness, good durability and adjustable color, it can partially replace natural stone.

Based on the fact that the existing cementing material is cement, the surface of the inorganic artificial stone has serious efflorescence phenomenon, and color difference is easy to generate along with the prolonging of time, so that the appearance is influenced, and the inorganic artificial stone cannot be used on outdoor ground in a large area; the inorganic artificial stone has compressive strength not reaching more than 100Mpa, is easy to generate breakage after long-term rolling by heavy objects such as vehicles and the like, has short life cycle, and can not reach the target of long-term use.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an anti-efflorescence inorganic artificial stone floor tile.

In order to achieve the purpose, the invention adopts the following technical scheme:

the saltpetering-resistant inorganic artificial stone floor tile comprises the following raw materials: the waterproof coating comprises a main mixture, dispersible rubber powder, a silane waterproof agent, cellulose ether, an ERA200 type anti-flooding alkali agent and water.

According to the mass fraction, the dispersible rubber powder accounts for 2-4% of the main mixture; the proportion of the ERA200 type anti-efflorescence agent in the main mixture is 0.1-0.3%; the cellulose ether accounts for 0.01 to 0.05 percent of the gelled material.

The main mixture comprises the following components: PW52.5 white portland cement, fly ash, silica fume, quartz sand, a water reducing agent and an antifoaming agent.

Preferably, the quartz sand has 20-40 meshes and 60-80 meshes, and the quartz stone accounts for 33.3% and 66.6% of the quartz sand with 20-40 meshes and 60-80 meshes respectively.

Preferably, the water reducing agent is a polycarboxylic acid water reducing agent.

Preferably, the defoamer is a polyether defoamer.

Preferably, the fineness of the silica fume is 110-130 meshes.

Preferably, the dispersible type gelatine powder is 5044N.

Preferably, the ERA-type anti-whiskering agent has a fineness of not less than 120 mesh.

Preferably, the water repellent is a silane-based powder, type SHP-50.

Preferably, the main body mixture further comprises a pigment, and the pigment accounts for 0.05-0.2% by mass percent.

Compared with the prior art, the invention has the beneficial effects that: the inorganic artificial stone floor tile can effectively inhibit the occurrence of surface saltpetering, and effectively ensure the long-time beauty of the surface of the inorganic artificial stone floor tile; meanwhile, the compressive strength of the inorganic artificial stone with the mixture ratio reaches 120Mpa, the breaking strength reaches 15Mpa, and the service life of the inorganic artificial stone floor tile can be effectively prolonged.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The main mixture comprises the following components: PW52.5 white portland cement, fly ash, silica fume, quartz sand, a water reducing agent and a defoaming agent, wherein the water reducing agent is a polycarboxylic acid water reducing agent, the defoaming agent is a polyether defoaming agent, the fineness of the silica fume is 110-130 meshes, the model of the dispersible adhesive powder is 5044N, the fineness of the ERA type anti-whiskering agent is not less than 120 meshes, the waterproofing agent is silane-based powder and is SHP-50, and the main mixture further comprises a pigment, wherein the pigment accounts for 0.05-0.2% by mass percent.

The quartz sand has 20-40 meshes and 60-80 meshes, the quartz stone accounts for 33.3 percent and 66.6 percent respectively in the 20-40 meshes and 60-80 meshes, and the quartz sand with different grain diameters is matched with each other, so that the quartz sand has the optimal filling effect and balanced toughness and hardness.

Optimizing the proportion of the optimal main mixture by adopting an orthogonal test mode, respectively doping dispersible rubber powder accounting for 2%, 3% and 4% of the mass of the cementing material into the main admixture with the optimal proportion, and judging the optimal doping amount of the dispersible rubber powder;

and respectively doping the anti-alkali agents accounting for 0.1%, 0.2% and 0.3% of the mass of the cementing material into the main body admixture with the optimal proportion, and judging the optimal doping amount of the dispersible rubber powder.

And respectively doping cellulose ether accounting for 0.01 percent, 0.03 percent and 0.05 percent of the mass of the cementing material into the main admixture with the optimal proportion, and judging the optimal doping amount of the cellulose ether.

Finally, the two or three raw materials are mixed into the main admixture with the optimal proportion, then the silane waterproof agent is coated, and a series of surface treatments such as grinding and polishing are carried out to obtain the final product.

Performance testing

(1) Mechanical properties

Mixing the main mixture, the anti-alkali-flooding agent, the dispersible rubber powder and water completely, stirring until the main mixture, the anti-alkali-flooding agent, the dispersible rubber powder and the water are mixed completely, then constructing, waiting for the main mixture to solidify completely, and testing the mechanical property of the main mixture in 3 days or 28 days;

(2) water absorption Performance test

Completely mixing the main mixture, the anti-alkali-flooding agent, the dispersible rubber powder and water, stirring until the main mixture, the anti-alkali-flooding agent, the dispersible rubber powder and the water are completely mixed, then constructing, waiting for the solidification to be complete, putting the test piece into the water for 24 hours, and measuring the water absorption performance of the test piece after the test piece is fully saturated;

(3) fluidity Performance test

And (3) stirring the mixture, and placing the mixture on a diving table for fluidity test after the mixture is completely stirred.

(4) Air bubble condition on floor tile surface

Stirring the mixture until the mixture is completely mixed, and observing the bubble condition on the surface of the floor tile and classifying the condition into 1-4 grades when the mixture is completely solidified;

level 1	The surface has a large number of visible bubbles
		Stage 2	With visible bubbles on the outer surface
Grade 3	Very few visible bubbles were present on the outer surface
		4 stage	No visible bubbles on the outer surface

(5) Alkali efflorescence resistance test

Mixing the main mixture, the anti-alkali-flooding agent, the dispersible rubber powder and water completely, stirring until the main mixture, the anti-alkali-flooding agent, the dispersible rubber powder and the water are mixed completely, and testing that the main mixture is in 28d and is divided into 1-5 grades; and 5, stage: no saltpetering was observed on the surface.

Level 1	Has a large amount of efflorescence on the surface and particularly obvious color difference
		Stage 2	Has a certain amount of efflorescence on the surface and obvious color difference
Grade 3	Has small amount of efflorescence on the appearance, has no obvious color difference, and needs to be closely observed to find
		4 stage	The external surface has very little efflorescence and the surface of the floor tile has no color difference

Example A

Mixing the main mixture with water according to different proportions; the cement is 52.5 white Portland cement; selecting secondary fly ash as the fly ash; selecting quartz sand with two specifications of 20-40 meshes and 60-80 meshes; the water reducing agent is selected from polycarboxylate; the defoaming agent is polyether defoaming agent. And the test blocks are maintained in natural environment for 28 d.

The above examples were subjected to mechanical properties, fluidity, water absorption, saltpetering resistance test and surface blistering conditions to give Table 2.

Description of the drawings:

1. comparing the results of the 9 sets of orthogonal tests, it is difficult to find the effect of each factor on the compressive strength, the flexural strength, the water absorption, the fluidity, the saltpetering resistance level and the outer surface bubbles. Therefore, the influence of each factor on each performance can be comprehensively understood only by analyzing range difference and variance of orthogonal test data.

For the flow property of the inorganic artificial stone in the application, the fly ash content of 10 percent is most beneficial to the flow degree. The more the silica fume is doped, the lower the flowability is. The fluidity is reduced with the increase of the mixing amount of the defoaming agent. Along with the continuous increase of the mixing amount of the water reducing agent, the fluidity is also continuously improved.

In summary, the influence degree of each factor on the fluidity is as follows: the water reducing agent, the fly ash, the defoaming agent and the silica fume.

For the inorganic artificial stone 28d compressive strength of the application, as the mixing amount of the fly ash is increased, the 28d compressive strength is decreased progressively; when the mixing amount of the silica fume is 10%, the compressive strength of the inorganic artificial stone 28d can be improved to the maximum extent; when the mixing amount of the defoaming agent is 0.3%, the compressive strength of the inorganic artificial stone 28d can be improved to the maximum extent; the mixing amount of the water reducing agent is within the range of 0.4-0.5%, and the compressive strength of the inorganic artificial stone 28d is continuously improved along with the increase of the mixing amount of the water reducing agent.

In conclusion, the influence degree of each factor on the compressive strength is as follows: the water reducing agent, the fly ash, the defoaming agent and the silica fume.

For the flexural strength of the inorganic artificial stone 28d, the flexural strength of the inorganic artificial stone 28d can be improved to the maximum extent when the blending amount of the fly ash is 10 percent; when the doping amount of the silica fume is 10%, the 28d flexural strength of the silica fume is the highest; when the mixing amount of the defoaming agent is 0.3%, the flexural strength of the inorganic artificial stone 28d can be improved to the greatest extent; when the mixing amount of the water reducing agent is 0.5 percent, the flexural strength of the inorganic artificial stone 28d can reach the maximum value.

The 28d flexural strength is influenced by the following factors: the silica fume, the fly ash, the defoaming agent and the water reducing agent.

For the 24-hour water absorption rate of the inorganic artificial stone, the fly ash mixing amount is within the range of 5% -15%, the water absorption rate is firstly reduced and then increased along with the increase of the fly ash mixing amount, and the water absorption rate is the minimum when the mixing amount is 10%; the silica fume doping amount is within the range of 5-15%, the water absorption rate is firstly reduced and then increased along with the increase of the silica fume doping amount, and when the doping amount is 10%, the water absorption rate is the minimum; the mixing amount of the defoaming agent is within the range of 0.1-0.5%, the water absorption rate is increased and then decreased along with the increase of the mixing amount of the defoaming agent, and when the mixing amount is 0.5%, the water absorption rate is lowest; the mixing amount of the water reducing agent is within the range of 0.4-0.5%, the water absorption rate is increased after being decreased along with the increase of the mixing amount of the water reducing agent, and the water absorption rate is lowest when the mixing amount is 0.45%.

For the alkali efflorescence resistance test of the inorganic artificial stone, the mixing amount of the fly ash is within the range of 5-15%, and the alkali efflorescence resistance is enhanced along with the increase of the mixing amount of the fly ash; when the doping amount of the silica fume is 5 percent, the efflorescence resistance of the inorganic artificial stone can be effectively improved; when the mixing amount of the defoaming agent is 0.3%, the alkali efflorescence resistance of the inorganic artificial stone can be improved to the maximum extent; the mixing amount of the water reducing agent is within the range of 0.4-0.5%, and the anti-efflorescence capability is enhanced along with the increase of the mixing amount of the water reducing agent.

For the situation of the bubbles on the surface of the inorganic artificial stone, the increase of the mixing amount of the fly ash is beneficial to reducing the bubbles on the surface of the floor tile; the quantity of bubbles on the surface of the floor tile is increased by increasing the mixing amount of the silica fume; when the mixing amount of the defoaming agent is 0.5%, the quantity of bubbles on the surface of the floor tile can be reduced to the maximum extent; the increase of the mixing amount of the water reducing agent is beneficial to reducing the quantity of bubbles on the surface of the floor tile.

In order to analyze the extreme difference, the influence degree of each factor on the bubbles on the surface of the inorganic artificial stone is as follows: the silica fume, the fly ash, the water reducing agent and the defoaming agent.

From the above, the fourth group of formulation ratios is the most excellent in combination of fluidity, mechanical properties, 24h water absorption, saltpetering resistance and air bubbles on the surface of the floor tile, which are obtained by combining the orthogonal tests. The composition can meet the requirements of good construction workability, ultrahigh mechanical property, saltpetering resistance and beautiful surface condition through the cooperation of the components.

Example B:

the formulation of example A4 (set 4 of experiments in example A, abbreviated below) was chosen as the base formulation for this example B, but any of the admixtures of examples B1-B9 was added to the A4 formulation, as in Table 3.

The mechanical properties and the saltpetering resistance of example B were measured and shown in Table 4.

Components	Number of scale of alkali efflorescence resistance	Compressive strength (Mpa)	Breaking strength (Mpa)
				Example B1	3	119.2	14.1
Example B2	3	108.8	13.2
				Example B3	3	99.4	12.8
Example B4	3	124.3	14.4
				Example B5	3	119.6	15.2
Example B6	4	112.8	14.8
				Example B7	3	119.8	14.5
Example B8	4	127.5	14.7
				Example B9	3	125.3	13.9

Description of the drawings:

1. the cellulose ether is added into the examples B1-B3 in different amounts, and the result of alkali efflorescence resistance test shows that the addition of the cellulose ether has little influence on the alkali efflorescence resistance of the inorganic artificial stone floor tile; the compressive strength test results show that the compressive strength is reduced by the doping of the cellulose ether, and the higher the doping amount of the cellulose ether is, the lower the compressive strength is; as can be seen from the results of the flexural strength test, the flexural strength is continuously reduced with the increase of the content of the cellulose ether.

Examples B4-B6 incorporated different levels of dispersible gum powder, as shown by the test results: the dispersible rubber powder is beneficial to improving the anti-whiskering performance, and when the mixing amount of the dispersible rubber powder reaches 3%, the anti-whiskering grade is improved to 4; the dispersible rubber powder is added to reduce the compressive strength, and the greater the addition amount, the more the compressive strength is reduced, but the rubber powder is added to increase the flexural strength, and the greater the addition amount, the more the flexural strength is increased.

Examples B7-B9 incorporated different amounts of anti-flooding agent, and the results of the tests show that: the addition of the anti-efflorescence agent is beneficial to improving the anti-efflorescence performance of the floor tile, but the addition amount is most remarkable when being 0.2%; when the mixing amount of the anti-flooding alkali agent reaches 0.2%, the compressive strength of the anti-flooding alkali agent is favorably improved, and the anti-compressive strength performance is possibly adversely affected by too small or too large mixing amount; in addition, the bending strength of the anti-efflorescence agent is improved when the mixing amount of the anti-efflorescence agent reaches 0.2 percent.

Example C

The compounding ratio of A4 was continuously selected as the basic formulation of the present example C, and dispersible gelatine powder and anti-flooding alkali agent were further blended in the compounding ratio of A4. As example C1-C9, as in table 5.

Components	Dispersible gelatine powder/anti-efflorescence agent
		Example C1	2％/0.1％
Example C2	2％/0.2％
		Example C3	2％/0.3％
Example C4	3％/0.1％
		Example C5	3％/0.2％
Example C6	3％/0.3％
		Example C7	4％/0.1％
Example C8	4％/0.2％
		Example C9	4％/0.3％

The mechanical properties and the saltpetering resistance of example C were measured to obtain Table 6.

Description of the drawings:

1. as can be seen from the data in the table, the blending of dispersible glue powder and anti-whiskering agent generally improves the anti-whiskering grade number of the floor tile, wherein the anti-whiskering grade number of the example B8 reaches the anti-whiskering grade 5 level, so that the blending of dispersible glue powder and anti-whiskering agent can more effectively reduce the whiskering degree of the floor tile.

2. As can be seen from the data in the table, the composite doping of the dispersible rubber powder and the anti-whiskering agent generally reduces the compressive strength of the floor tile, but the reduced compressive strength still meets the level of ultrahigh-strength performance. Therefore, the complex mixing of the glue powder and the anti-alkali bleeding agent is not good for the compression strength of the floor tile.

3. The data in the table show that the bending strength of the floor tile is generally improved by the compound mixing of the dispersible rubber powder and the anti-saltpetering agent, and the fact that the compound mixing of the rubber powder and the anti-saltpetering agent has no negative influence on the bending strength of the inorganic artificial stone floor tile is proved.

In summary, the inorganic artificial stone floor tile disclosed by the application can further inhibit the saltpetering condition of the inorganic artificial stone floor tile by additionally doping 4% of dispersible rubber powder and 0.2% of saltpetering resistant agent in the A4 group basic mixing proportion.

Example D:

1. according to the above, the optimal proportion of the inorganic artificial stone floor tile is obtained: the A4 group standard mixing proportion, dispersible rubber powder accounting for 4 percent of the gelled material, anti-alkali-flooding agent accounting for 0.2 percent of the gelled material, and pigment accounting for 0.05 percent to 0.2 percent of the gelled material according to requirements. In order to improve the characteristics of smoothness and beauty of the surface of the floor tile, the surface of the floor tile is subjected to grinding and polishing treatment.

2. After the inorganic artificial stone floor tile is ground and polished, a silane 50 type waterproof agent is coated on the surface of the inorganic artificial stone floor tile to improve the impermeability of the floor tile so as to further improve the alkali efflorescence resistance of the floor tile, so that the serious alkali efflorescence can be avoided after 28 days.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The saltpetering-resistant inorganic artificial stone floor tile is characterized by comprising the following raw materials: the waterproof coating comprises a main mixture, dispersible rubber powder, a silane waterproof agent, cellulose ether, an ERA200 type anti-flooding alkali agent and water;

according to the mass fraction, the dispersible rubber powder accounts for 2-4% of the main mixture; the proportion of the ERA200 type anti-efflorescence agent in the main mixture is 0.1-0.3%; the cellulose ether accounts for 0.01 to 0.05 percent of the cementing material;

2. The saltpetering-resistant inorganic artificial stone floor tile according to claim 1, wherein the quartz sand has two kinds of 20-40 mesh and 60-80 mesh, and the quartz sand having 20-40 mesh and 60-80 mesh accounts for 33.3% and 66.6%, respectively.

3. The saltpetering-resistant inorganic artificial stone floor tile according to claim 2, wherein the water reducing agent is a polycarboxylic acid water reducing agent.

4. The saltpetering-resistant inorganic artificial stone floor tile as claimed in claim 3, wherein the defoaming agent is polyether type defoaming agent.

5. The saltpetering-resistant inorganic artificial stone floor tile as claimed in claim 4, wherein the fineness of the silica fume is 110-130 meshes.

6. The saltpetering-resistant inorganic artificial stone floor tile according to claim 5, wherein the dispersible type rubber powder is 5044N.

7. An alkali-efflorescence resistant inorganic artificial stone floor tile according to any one of claims 1 to 6, wherein the ERA type alkali-efflorescence resistant agent has a fineness of not less than 120 mesh.

8. The saltpetering-resistant inorganic artificial stone floor tile as claimed in claim 7, wherein the silane waterproofing agent is silane-based powder with model number SHP-50.

9. The saltpetering-resistant inorganic artificial stone floor tile as claimed in claim 1, wherein the main body mixture further comprises a pigment, and the pigment accounts for 0.05-0.2% by mass.