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Formula and preparation method for low-shrinkage artificial inorganic stone

A low-shrinkage, inorganic technology, applied in the formulation of low-shrinkage artificial inorganic stone and its preparation field, can solve the problems of inorganic stone cracking and affect the appearance and durability of inorganic stone materials, so as to alleviate shrinkage, reduce the risk of cracking, and reduce the risk of cracking. The effect of shrinkage properties

Inactive Publication Date: 2020-08-25
四川力达建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Artificial inorganic stone usually uses Portland cement as adhesive, which has the characteristics of hardening and shrinkage. Excessive shrinkage will easily cause inorganic stone to crack, especially when producing inorganic stone slabs, the cracking phenomenon will be more obvious, and the cracking phenomenon will be serious. Affects the appearance and durability of inorganic stone materials

Method used

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  • Formula and preparation method for low-shrinkage artificial inorganic stone

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 50 parts of quartz sand, 40 parts of cement, 2 parts of fly ash, 2 parts of internal curing agent and 6 parts of expansion agent into the mixer, stir for 45 seconds, then add 1 part of shrinkage reducing agent and 1.5 parts of water reducing agent into the measured water glue Mixing water with a ratio of 0.20, after stirring evenly, add to the mixer and continue stirring for 450s;

[0033] Spread the stirred material evenly in the mold with a paving thickness of 2.7cm, and then vacuumize the material;

[0034] Put the material after vacuum treatment into the steam curing equipment, remove the mold after the curing, and obtain the inorganic stone blank, and then place the inorganic stone blank in a 5% shrinkage reducing agent solution for curing for 4 days;

[0035] Finally, the inorganic stone rough after soaking and curing is ground, polished, and cut to obtain finished products.

Embodiment 2

[0037] Add 50 parts of quartz sand, 38 parts of cement, 4 parts of fly ash, 1.5 parts of internal curing agent and 8 parts of expansion agent into the mixer, stir for 45 seconds, then add 1.5 parts of shrinkage reducing agent and 2 parts of water reducing agent into the measured water glue Mixing water with a ratio of 0.22, after stirring evenly, add to the mixer and continue stirring for 450s;

[0038] Spread the stirred material evenly in the mold with a paving thickness of 2.7cm, and then vacuumize the material;

[0039] Put the material after vacuum treatment into the steam curing equipment, remove the mold after the curing, and obtain the inorganic stone blank, and then place the inorganic stone blank in a 5% shrinkage reducing agent solution for curing for 4 days;

[0040] Finally, the inorganic stone rough after soaking and curing is ground, polished, and cut to obtain finished products.

Embodiment 3

[0042] Add 50 parts of quartz sand, 36 parts of cement, 6 parts of fly ash, 2 parts of internal curing agent and 10 parts of expansion agent into the mixer, stir for 45 seconds, then add 2 parts of shrinkage reducing agent and 2 parts of water reducing agent into the measured water glue Mixing water with a ratio of 0.18, after stirring evenly, add to the mixer and continue stirring for 450s;

[0043] Spread the stirred material evenly in the mold with a paving thickness of 2.7cm, and then vacuumize the material;

[0044] Put the material after vacuum treatment into the steam curing equipment, remove the mold after the curing, and obtain the inorganic stone blank, and then place the inorganic stone blank in a 5% shrinkage reducing agent solution for curing for 4 days;

[0045] Finally, the inorganic stone rough after soaking and curing is ground, polished, and cut to obtain finished products.

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Abstract

The invention discloses a formula and preparation method for low-shrinkage artificial inorganic stone. The inorganic stone comprises the following components in parts by weight: 20-40 parts of an inorganic cementing material, 2-10 parts of an inorganic mineral admixture, 30-80 parts of quartz sand, 6-15 parts of an expanding agent, 1-5 parts of a shrinkage reducing agent, 0.5-4 parts of a water reducing agent, 1-3 parts of an internal curing agent and 1-5 parts of chopped fibers. By adding various raw materials, the shrinkage of the inorganic stone is reduced, so the risk of cracking is lowered; the expanding agent undergoes a chemical reaction in the hydration process to generate a hydration product, so volume expansion is generated and compensates for the shrinkage of the inorganic stone; the shrinkage reducing agent reduces the surface tension of a mesoporous solution in the inorganic stone, so tension on a capillary pore wall in water loss process is reduced, and the shrinkage of the inorganic stone is reduced; the internal curing agent is added, so water required by the cement in hydration process is supplemented and self-shrinkage in water migration process is reduced; and the breaking strength of the inorganic stone is improved through the chopped fibers, so the low shrinkage performance of the artificial inorganic stone is achieved, and the artificial inorganic stone issuitable for being widely used and popularized.

Description

technical field [0001] The invention relates to the field of inorganic stones, in particular to a formula of low-shrinkage artificial inorganic stones and a preparation method thereof. Background technique [0002] Stone is a kind of building material with large usage and demand in the field of architectural decoration. Since natural stone is a non-renewable resource, the reserves of high-quality stone are low, the output is small, and the production and processing technology is cumbersome, so the application of artificial stone in the field of architectural decoration has attracted more and more attention. The raw materials of artificial inorganic stone are easy to obtain, easy to shape, good durability and Low cost, it is an important part of the artificial stone family. Artificial inorganic stone usually uses Portland cement as adhesive, which has the characteristics of hardening and shrinkage. Excessive shrinkage will easily cause inorganic stone to crack, especially wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/08C04B18/144C04B14/06C04B24/026C04B24/122C04B24/121C04B2103/302C04B22/066C04B22/148C04B24/24C04B14/22C04B18/082C04B18/023C04B14/48C04B14/46C04B16/0625C04B16/0683
Inventor 胡骥蒋勇
Owner 四川力达建材科技有限公司
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