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A kind of anti-cracking agent and its preparation method, and the preparation method of ultra-high performance concrete prefabricated component

An ultra-high-performance, anti-cracking agent technology, applied in the field of building materials, can solve problems such as easy cracking

Active Publication Date: 2022-03-25
GUANGDONG BOZHILIN ROBOT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The application provides an anti-cracking agent and its preparation method, and a preparation method of ultra-high performance concrete prefabricated components, which can improve the technical problem that the existing ultra-high performance concrete is easy to crack after solidification

Method used

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  • A kind of anti-cracking agent and its preparation method, and the preparation method of ultra-high performance concrete prefabricated component
  • A kind of anti-cracking agent and its preparation method, and the preparation method of ultra-high performance concrete prefabricated component

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preparation example Construction

[0055] The present application also provides a method of preparing a cracking agent comprising: mixing the raw material compared.

[0056] Preparation of the first component:

[0057] First, the fly ash, calcium sulfate, cooked soil, cooked lime, magnesium oxide and sodium fluorosilicate have passed the 100-purpose hole sieve, and then 30 to 60 parts by weight of the fly ash, 10 ~ 30 parts by weight of calcium sulfate 5 to 15 parts by weight of the soil, 5 to 15 parts by weight of the ripe lime, 3 to 7 parts by weight of the magnesium oxide and 2 to 6 parts by weight of the sodium fluorosilicate mixing uniform particle diameter is less than or equal to 0.15 mm.

[0058] Preparation of the second component:

[0059] The sub-products recovered by the sugar industry were diluted with a solid content of 5 to 15%.

[0060] Preparation of anti-cracking agent:

[0061] The hybrid powder and the molar liquid were mixed in a proportion of mass ratio of 0.5 to 1: 2 to 5.

[0062] The presen...

Embodiment 1

[0066] The present application provides a cracking agent and a preparation method thereof.

[0067] 1, anti-cracking agent

[0068] The anti-cracking agent includes a first component and a second component, and the first component comprises 55 parts by weight of the fly ash, 20 parts by weight of the desulfurized gypsum, 3 parts by weight of lightly magnesium oxide, 10 parts by weight of the ripe soil, 10 parts by weight Cooked lime and 2 parts by weight of sodium fluorosilicate. The second component comprises 300 parts by weight of a molamic liquid having a solid content of 10%.

[0069] 2, method of preparation of anti-cracking agent

[0070] Preparation of the first component:

[0071] The fly ash, calcium sulfate, cooked soil, cooked lime, magnesium oxide and sodium fluorosilicate have passed the 100-purpose hole sieve, and then 55 parts by weight of the gray ash after sieve, 20 parts by weight desulfurized plaster, 3 parts by weight of the magnesium oxide, 10 parts by weight ...

Embodiment 2

[0077] The present application provides a cracking agent and a preparation method thereof.

[0078] 1, anti-cracking agent

[0079] The anti-cracking agent includes a first component and a second component, and the first component comprises 51 parts by weight of the fly ash, 20 parts by weight of the desulfurized gypsum, 5 parts by weight of light, 10 parts by weight, the soil, 10 parts by weight Cooked lime and 4 parts by weight of sodium fluorosilicate. The second component comprises 300 parts by weight of a molamic liquid having a solid content of 10%.

[0080] 2, method of preparation of anti-cracking agent

[0081] Preparation of the first component:

[0082] The fly ash, calcium sulfate, cooked soil, cooked lime, magnesium oxide and sodium fluorosilicate have passed the 100-purpose hole sieve, and then 51 parts by weight of the gray ash after sieve, 20 parts by weight desulfurized plaster, 5 parts by weight of the magnesium oxide, 10 parts by weight of the soil, 10 parts by ...

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Abstract

An anti-cracking agent and its preparation method, and a preparation method of ultra-high performance concrete prefabricated components belong to the technical field of building materials. The raw material of the anti-cracking agent comprises the first component, and the first component comprises 30-60 parts by weight of fly ash, 10-30 parts by weight of calcium sulfate, 5-15 parts by weight of slaked alumina, 5-15 parts by weight of slaked lime and 3 ~7 parts by weight magnesium oxide. Magnesium oxide can react with water to produce magnesium hydroxide, a volume-expanding hydration product, and boiled alum, calcium sulfate and slaked lime can undergo chemical reactions to produce volume-expanding ettringite. The above two expansion mechanisms can synergistically supplement UHPC from the initial stage. The volume shrinkage in the process of setting to final setting and later strength development greatly reduces the risk of cracking in the whole life cycle of ultra-high performance concrete precast components.

Description

Technical field [0001] The present application relates to the technical field of building materials, and in particular, a method of preparing a cracking agent and a preparative method thereof, a super high performance concrete prefabricating member. Background technique [0002] Concrete prefabricated components technology is an important passage of implementation of engineering construction industrialization. Concrete prefabrication has achieved high efficiency, high quality, low resource consumption and low environmental impacts of engineering construction, which have significant economic benefits and social benefits. The prefabricated components of ultra-high performance concrete (ULTRA HIGH Performance Concrete) have a large-scale application in building structural structural structural structural structures, construction scenarios, and highway railway bridge structures. [0003] In order to speed up the prefabricated component mold turnover, improve the production efficiency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/10C04B22/14C04B22/06B28B1/14
CPCC04B40/0046C04B22/148C04B22/066B28B1/14C04B18/08C04B22/126C04B22/002C04B24/10
Inventor 文青
Owner GUANGDONG BOZHILIN ROBOT CO LTD
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