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Low-temperature fast-curing concrete and preparation method thereof

A rapid curing and concrete technology, which is applied in the field of concrete preparation, can solve the problems that the rapid curing and high strength of concrete cannot be balanced, and achieve the effect of promoting rapid curing, avoiding overheating or overcooling, and ensuring the strength of concrete

Inactive Publication Date: 2021-01-01
彭圳凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects and deficiencies that the rapid curing and high strength of concrete cannot be taken into account under low temperature conditions, and provide a kind of low temperature rapid curing concrete and its preparation method

Method used

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  • Low-temperature fast-curing concrete and preparation method thereof
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  • Low-temperature fast-curing concrete and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A method for preparing low-temperature fast-curing concrete. First, add 20kg of water to 350kg of aggregate, mix evenly to make the aggregate fully absorb water to obtain pre-treated aggregate, and then carry out coating treatment to obtain coated aggregate, and then coat the aggregate. The material is stirred and mixed with 100kg of cement and 0.8kg of water-reducing agent, and 35kg of water is added, and the slurry is obtained by stirring. The specific method is as follows:

[0038] (1) First, butyl dichloroborane, methyldichlorosilane, and hexamethyldisilazane are prepared into corresponding solutions; and tertiary vinyl carbonate, 1H, 1H, 2H-perfluoro-1 - Decene, emulsifier and water are formulated into a premix;

[0039] (2) then dropping butyldichloroborane and methyldichlorosilane solution into hexamethyldisilazane solution simultaneously, then adding pretreated aggregate and premixed liquid, stirring reaction to obtain precursor;

[0040] (3) Finally, under am...

Embodiment 2

[0054] A method for preparing low-temperature fast-curing concrete. First, add 25kg of water to 450kg of aggregate, mix evenly to make the aggregate fully absorb water to obtain pre-treated aggregate, and then carry out coating treatment to obtain coated aggregate, and then coat the aggregate. The material is stirred and mixed with 100kg of cement and 1kg of water-reducing agent, and 40kg of water is added, and the slurry is obtained by stirring. Methods as below:

[0055] (1) First, butyl dichloroborane, methyldichlorosilane, and hexamethyldisilazane are prepared into corresponding solutions; and tertiary vinyl carbonate, 1H, 1H, 2H-perfluoro-1 - Decene, emulsifier and water are formulated into a premix;

[0056] (2) then dropping butyldichloroborane and methyldichlorosilane solution into hexamethyldisilazane solution simultaneously, then adding pretreated aggregate and premixed liquid, stirring reaction to obtain precursor;

[0057] (3) Finally, under ammonia atmosphere an...

Embodiment 3

[0071] A method for preparing low-temperature fast-curing concrete. First, add 22 kg of water to 400 kg of aggregate, mix well so that the aggregate can fully absorb water to obtain pre-treated aggregate, and then carry out coating treatment to obtain coated aggregate. The material is stirred and mixed with 100kg of cement and 0.9g of water-reducing agent, 38kg of water is added, and the slurry is obtained by stirring. The specific method is as follows:

[0072] (1) First, butyl dichloroborane, methyldichlorosilane, and hexamethyldisilazane are prepared into corresponding solutions; and tertiary vinyl carbonate, 1H, 1H, 2H-perfluoro-1 - Decene, emulsifier and water are formulated into a premix;

[0073] (2) then dropping butyldichloroborane and methyldichlorosilane solution into hexamethyldisilazane solution simultaneously, then adding pretreated aggregate and premixed liquid, stirring reaction to obtain precursor;

[0074] (3) Finally, under ammonia atmosphere and stirring ...

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Abstract

The invention belongs to the field of concrete preparation, and particularly relates to low-temperature fast-curing concrete and a preparation method thereof.The preparation method includes the stepsthat water is added into aggregate, even mixing is conducted to enable the aggregate to fully absorb water to obtain pretreated aggregate, then coating treatment is conducted to prepare coated aggregate, the coated aggregate, cement and a water reducing agent are stirred and mixed evenly, water is added, even stirring is conducted, and slurry is obtained; finally, the slurry is injected into a mold for vibration molding, standing and curing are conducted, and concrete can be obtained. The concrete can be quickly cured at a low temperature (-40 to 5 DEG C), and the obtained concrete has high strength.

Description

technical field [0001] The invention belongs to the technical field of concrete preparation. More specifically, it relates to a low-temperature fast-curing concrete and a preparation method thereof. Background technique [0002] With the improvement of economic level, the construction of various highways, bridges and municipal projects in the world is rapid, and the application of concrete is also increasing. Large-scale concrete pouring construction is an important link in infrastructure construction. Concrete refers to a mixture made of cement (the main components are silicate, aluminate) and aggregates (sand, stone) in appropriate proportions. It has the advantages of economy, durability, fire resistance and high compressive performance. It is one of the most important civil engineering materials in contemporary times. [0003] When the cement in concrete encounters water, its main components, silicate and aluminate, undergo rapid hydration reaction and finally glue to...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/76
CPCC04B28/04C04B2111/76C04B2201/50C04B14/06C04B24/128C04B24/286C04B2103/302C04B24/006C04B24/42C04B24/045C04B24/005C04B2103/0068C04B22/00
Inventor 彭圳凡
Owner 彭圳凡
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