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Cement-based capillary crystalline material and preparation method thereof

A permeable crystallization, cement-based technology, applied in the field of cement-based permeable crystalline materials and their preparation, can solve the problems of poor seepage resistance of the overall structure, not repaired in time, affecting the life and quality of the overall structure, and promote the hydration reaction. , Improve the durability, the effect of a wide range of use

Active Publication Date: 2022-05-17
GUANGDONG TAISHI IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cement-based permeable crystalline waterproof coating overcomes the problem that traditional waterproof coatings cannot resist slight vibrations. Although the slight cracks caused by these vibrations are inside the concrete structure, it is not easy to find them, but if they are not repaired in time, the internal structure will be damaged under the infiltration of water for a long time. Corrosion of steel reinforcement can also affect the life and quality of the overall structure
The problems existing in the existing cement-based permeable crystalline waterproof coatings are mainly that after the cement-based permeable crystalline waterproof coatings are coated on the concrete structure, the bond strength between the two and the impervious pressure difference of the overall structure will affect the concrete structure. waterproof effect

Method used

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  • Cement-based capillary crystalline material and preparation method thereof
  • Cement-based capillary crystalline material and preparation method thereof
  • Cement-based capillary crystalline material and preparation method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0022] The cement-based permeable crystalline material provided in this embodiment includes the following raw materials in parts by weight: 50 parts of Portland cement, 30 parts of quartz sand, 5 parts of calcium hydrogen phosphate, 2 parts of sodium silicate, and 6 parts of hydrated silicic acid Calcium nanocrystal nucleus suspension, 3 parts of double-ended amino polyethylene glycol.

[0023] Wherein, the particles in the cement whose particle size is less than 5 μm account for 16% of the weight of the cement, thereby increasing the hydration speed of the cement. The quartz sand adopts high-purity quartz sand, and the quartz sand is ground to a specific surface area greater than 420m 2 / kg;

[0024] The preparation method of the cement-based permeable crystalline material in this embodiment comprises the following steps:

[0025] 1) Mix and stir cement and quartz sand evenly to obtain powder, and stir for 5 minutes;

[0026] 2) Add calcium hydrogen phosphate, sodium silic...

Embodiment 2

[0028] The cement-based permeable crystalline material provided in this embodiment includes the following raw materials in parts by weight: 50 parts of Portland cement, 30 parts of quartz sand, 5 parts of calcium hydrogen phosphate, 2 parts of sodium silicate, and 9 parts of hydrated silicic acid Calcium nanocrystal nucleus suspension, 3 parts of double-ended amino polyethylene glycol.

[0029] Wherein, the particles in the cement whose particle size is less than 5 μm account for 16% of the weight of the cement, thereby increasing the hydration speed of the cement. The quartz sand adopts high-purity quartz sand, and the quartz sand is ground to a specific surface area greater than 420m 2 / kg;

[0030] The preparation method of the cement-based permeable crystalline material in this embodiment comprises the following steps:

[0031] 1) Mix and stir cement and quartz sand evenly to obtain powder, and stir for 5 minutes;

[0032] 2) Add calcium hydrogen phosphate, sodium silic...

Embodiment 3

[0034] The cement-based permeable crystalline material provided in this embodiment includes the following raw materials in parts by weight: 50 parts of Portland cement, 30 parts of quartz sand, 5 parts of calcium hydrogen phosphate, 2 parts of sodium silicate, 12 parts of hydrated silicic acid Calcium nanocrystal nucleus suspension, 3 parts of double-ended amino polyethylene glycol.

[0035] Wherein, the particles in the cement whose particle size is less than 5 μm account for 16% of the weight of the cement, thereby increasing the hydration speed of the cement. The quartz sand adopts high-purity quartz sand, and the quartz sand is ground to a specific surface area greater than 420m 2 / kg;

[0036] The preparation method of the cement-based permeable crystalline material in this embodiment comprises the following steps:

[0037] 1) Mix and stir cement and quartz sand evenly to obtain powder, and stir for 5 minutes;

[0038] 2) Add calcium hydrogen phosphate, sodium silicate...

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Abstract

The invention discloses a cement-based capillary crystalline material and a preparation method thereof. The cement-based capillary crystalline material is prepared from the following raw materials in parts by weight: 40-55 parts of cement, 28-30 parts of quartz sand, 3-8 parts of calcium hydrophosphate, 1-3 parts of sodium silicate, 6-12 parts of hydrated calcium silicate nanocrystal nucleus suspension and 2-6 parts of amino-terminated polyethylene glycol. The waterproof and anti-seepage performance of the concrete structure is improved while the compression resistance and fracture resistance of the concrete are guaranteed.

Description

technical field [0001] The invention relates to the field of cement-based permeable crystalline waterproof coatings. More specifically, the present invention relates to a cement-based permeable crystalline material and its preparation method. Background technique [0002] With the vigorous development of construction projects, leakage is often found in the concrete structures involved in the construction of tunnels, basements, and subways. This is because cracks will exist due to the temperature stress and self-shrinkage. The existence of cracks will directly affect the waterproof performance of concrete structures. , in order to avoid the leakage of concrete structures, waterproof materials are often coated on concrete structures. [0003] Cement-based permeable crystalline waterproof coating is one of the mainstream waterproof materials. It is flexible and can penetrate into the interior of the concrete structure to fill gaps with internal crack widths less than 0.4mm. C...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/27C04B111/72
CPCC04B28/04C04B2111/27C04B2111/72C04B14/06C04B22/16C04B12/04C04B22/00C04B24/32Y02W30/91
Inventor 邓思荣邓景峰
Owner GUANGDONG TAISHI IND CO LTD
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