Preparation method of slag powder concrete material

A technology of slag powder and concrete, which is applied in the field of concrete materials, can solve the problems that affect the formwork turnover rate and production efficiency, the time for formwork removal is difficult to guarantee, and the hydration cycle is slow, so as to achieve significant economic and social benefits, strong resistance, and The effect of reducing tension

Pending Publication Date: 2021-04-02
江门市骏通建材科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] As a new type of mineral admixture, slag powder has been used in ordinary commercial concrete to a certain extent, but in precast concrete, due to the addition of slag powder, the hydration cycle is slower than that of cement, the early strength is insufficient, and the demolition time is difficult to guarantee, so It seriously affects the formwork turnover rate and production efficiency. Therefore, the concrete materials with slag formula have not been applied in the actual production of concrete prefabricated components.

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  • Preparation method of slag powder concrete material
  • Preparation method of slag powder concrete material
  • Preparation method of slag powder concrete material

Examples

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Embodiment 1

[0032] A preparation method of a slag powder concrete material preparation method, comprising the following steps:

[0033] A, prepare modified slag powder, comprise the following steps:

[0034] (1) Get the waste slag, and adjust its moisture to 15%, and grind it to a particle size of 300 mesh powder;

[0035] (2) Add cement dry powder in the waste slag according to the mass ratio of 10% of the waste slag total amount, and stir it evenly to form mixed powder;

[0036] (3) Preparation of modified curing agent: 87.07% of water is placed in the container, followed by adding 2% of metal cation chelate, 0.03% of nano-cerium oxide, and 0.3% of quinoline oxide and stirring at room temperature for 4 minutes; After stirring evenly, then add 3% manganese sulfate, 1% polyethanol, and 2% borax in sequence, and continue to stir for 10 minutes; finally add 0.1% ethylenediamine, 4% silica gel, and stir for 8 minutes to prepare Modified curing agent.

[0037] (4) Add the prepared modified...

Embodiment 2

[0040] A preparation method of a slag powder concrete material preparation method, comprising the following steps:

[0041] A, prepare modified slag powder, comprise the following steps:

[0042] (1) Get the waste slag, and adjust its moisture to 10%, and grind it to a particle size of 200 mesh powder;

[0043] (2) cement dry powder is added in waste slag according to the mass ratio of 5% of waste slag total amount, and it is stirred evenly, forms mixed powder;

[0044] (3) Preparation of modified curing agent: 90.53% of water is placed in a container, followed by adding 1% of metal cation chelate, 0.01% of nano-cerium oxide, 0.01% of nano-lanthanum oxide, and 0.1% of quinoline oxide Stir at room temperature for 4 minutes; after stirring evenly, then add 5% manganese sulfate, 0.1% polyethanol, and 1% sodium phosphate in sequence, and continue stirring for 5-10 minutes; finally add 0.15% triethylenetetramine , 2% silica gel, after stirring for 8 minutes, the modified curing a...

Embodiment 3

[0048] A preparation method of a slag powder concrete material preparation method, comprising the following steps:

[0049] A, prepare modified slag powder, comprise the following steps:

[0050] (1) Get the waste slag, and adjust its moisture to 20%, and grind it to a particle size of 200 mesh powder;

[0051] (2) cement dry powder is added in waste slag according to the mass ratio of 15% of waste slag total amount, and it is stirred evenly, forms mixed powder;

[0052] (3) Preparation of modified curing agent: 84.77% of water is placed in a container, followed by adding 3% of metal cation chelate, 0.02% of nano-cerium oxide, 0.01% of nano-lanthanum oxide, and 0.4% of quinoline oxide Stir at room temperature for 4 minutes; after stirring evenly, then add 1% manganese sulfate, 0.8% polyethanol, 4% sodium fluoride, and continue stirring for 10 minutes; finally add 0.2% paraformaldehyde, 5% Silica gel, after stirring for 8 minutes, the modified curing agent was prepared.

[0...

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Abstract

The invention relates to a preparation method of a slag powder concrete material. The preparation method comprises the following steps: A. preparing modified slag powder; B, weighing the following components in parts by weight: 10-20 parts of cement, 5-10 parts of modified slag powder, 0.2-0.5 part of an early strength additive, 5-10 parts of water and 30-40 parts of aggregate; and C. adding the cement, the modified slag powder, aggregate, the early strength additive and the water into a stirring device, and uniformly stirring and mixing to obtain the slag powder concrete material. According to the invention, the modified slag powder is adopted to replace about 35% of the total amount of a cementing material (cement) in a traditional prefabricated part concrete formula, so that the carbonemission can be greatly reduced; and in the raw materials, the main raw material of the slag powder concrete is industrial waste, the economic benefit is good, environmental pollution can be reduced,and the tension degree of cement is reduced.

Description

technical field [0001] The invention relates to the technical field of concrete materials, in particular to a method for preparing slag powder concrete materials. Background technique [0002] Prefabricated concrete is a component used in construction, transportation, water conservancy and other fields. At present, most of the concrete prefabricated parts are made of pure cement formula. Although the early strength of the prefabricated parts and the turnover rate of the formwork are guaranteed, the pure cement formula not only consumes a large amount of cement, but also increases the environmental pressure. When the amount is large, cracks are prone to appear. [0003] As a new type of mineral admixture, slag powder has been used in ordinary commercial concrete to a certain extent, but in precast concrete, due to the addition of slag powder, the hydration cycle is slower than that of cement, the early strength is insufficient, and the demolition time is difficult to guarant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B20/02C04B18/14
CPCC04B18/141C04B20/026C04B28/00C04B2201/50C04B2103/302C04B2103/24C04B20/023C04B7/00C04B24/123C04B14/30C04B24/121C04B24/008C04B24/30C04B24/128C04B22/06C04B22/142C04B24/00C04B2103/22Y02W30/91
Inventor 肖子豪
Owner 江门市骏通建材科技有限公司
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