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Hydrated and carbonized composite hardened cementing material based on steel slag and preparation method of hydrated and carbonized composite hardened cementing material

A cementitious material and hardening technology, applied in the field of hydration carbonization composite hardening cementitious material and its preparation, can solve the problems of low carbonization hardening body strength, high consumption of natural ore, narrow application range, etc. Dispersion, design science, the effect of improving adsorption capacity

Active Publication Date: 2022-05-27
JIAHUA SPECIAL CEMENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a kind of hydration carbonization composite hardening cementitious material based on steel slag, which solves the problem of hydraulic lime / natural hydraulic lime in the prior art. The production of natural ore requires high consumption, high energy consumption, large CO2 emissions, low strength of carbonized hardened body, and narrow application range

Method used

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  • Hydrated and carbonized composite hardened cementing material based on steel slag and preparation method of hydrated and carbonized composite hardened cementing material
  • Hydrated and carbonized composite hardened cementing material based on steel slag and preparation method of hydrated and carbonized composite hardened cementing material

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preparation example Construction

[0051] The preparation method of the hydration carbonization composite hardening cementitious material based on steel slag of the present invention comprises the following steps:

[0052] S1. Ingredients: prepare each raw material according to the mass percentage;

[0053] S2. Iron selection: the prepared raw materials are sent to the magnetic separator, and the magnetic iron and its oxides in the raw materials are selected;

[0054] S3. Grinding: Grind the mixed raw material from which the magnetic iron has been removed through the iron selection operation into powder to obtain a hydrated carbonized composite hardening cementitious material based on steel slag.

[0055] Preferably, after the iron selection is completed, the animal protein hydrolyzed liquid accounting for 0.05-0.5% of the raw material mass is sprayed into the raw material, fully mixed with the raw material, and then ground; preferably, the animal protein hydrolyzed liquid accounting for 0.1% of the raw materia...

Embodiment 1

[0063] The present embodiment discloses the preparation method of the steel slag-based hydration carbonization composite hardening cementitious material of the present invention, specifically:

[0064] S1. Preparation of raw materials: by mass percentage, 25% of cement clinker, 25% of pretreated carbide slag, 1.5% of industrial by-product gypsum, 5% of bentonite, 1% of hydration and carbonization accelerator and the balance The proportion of the steel slag (42.5%) is taken as the raw materials of each component. The total amount of raw materials is 100kg, including 25kg of cement clinker, 25kg of pretreated carbide slag, 1.5kg of industrial by-product gypsum, 5kg of bentonite, 1kg of hydration carbonization accelerator, and 42.5kg of steel slag.

[0065] S2. iron selection: the prepared raw materials enter the magnetic separator, and the magnetic iron and its oxides in the materials such as steel slag and carbide slag are selected;

[0066] S3. Grinding: After the raw materia...

Embodiment 2

[0069] The present embodiment discloses the preparation method of the steel slag-based hydration carbonization composite hardening cementitious material of the present invention, specifically:

[0070] S1. Preparation of raw materials: by mass percentage, 28% of cement clinker, 25% of pretreated carbide slag, 1.8% of industrial by-product gypsum, 5% of bentonite, 1.0% of hydration and carbonization accelerator and the balance The proportion of the steel slag (39.2%) is taken from the raw materials of each component. The total amount of raw materials is 100kg, including 28kg of cement clinker, 25kg of pretreated carbide slag, 1.8kg of industrial by-product gypsum, 5kg of bentonite, 1kg of hydration and carbonization accelerator, and 39.2kg of steel slag.

[0071] S2. Iron selection: The prepared raw materials enter the magnetic separator, and the magnetic iron and its oxides in the steel slag, carbide slag and other materials are selected;

[0072] S3. Grinding: After the raw ...

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Abstract

The invention discloses a hydrated and carbonized composite hardened cementing material based on steel slag and a preparation method thereof, belongs to the technical field of building materials, and solves the problems of high consumption, high energy consumption, large CO2 emission, low carbonized and hardened body strength and narrow application range in production of natural ore from hydraulic lime / natural hydraulic lime. The hydrated and carbonized composite hardened cementing material based on steel slag comprises the following raw materials: 25-30% of cement clinker, 20-25% of pretreated carbide slag, 1.5-2.0% of industrial byproduct gypsum, 3-5% of bentonite, 0.5-1.0% of a hydrated and carbonized accelerant and the balance of steel slag. The method comprises the following steps: preparing materials, selecting iron, and grinding into powder. The hydration and carbonization composite hardening cementing material based on the steel slag has good hydration hardening performance and carbonization hardening performance, a hardened body shows good mechanical performance in water, air and CO2 atmosphere, and the application field is widened.

Description

technical field [0001] The invention belongs to the technical field of building materials, and more particularly relates to a hydration carbonization composite hardening cementitious material based on steel slag and a preparation method thereof. Background technique [0002] Cement is a hydration hardening cementitious material with suitable hydration hardening time, good mechanical properties and high rigidity of the hardened body, and is suitable for building structures and non-structural parts with high strength requirements. However, the cement hardened body is easy to shrink, has poor toughness, and is easy to crack. Lime is a carbonization hardening cementitious material, its hardened body has good toughness, developed pores, good air permeability, low shrinkage, and cracks can be self-repaired by carbonization, but the carbonization hardening rate is low, the strength formation is slow, and the final rigidity and strength of the hardened body are low. Bad sex. Hydra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/24C04B7/21C04B7/36C04B7/38
CPCC04B7/243C04B7/1535C04B7/36C04B7/38Y02P40/10
Inventor 许毅刚侯莉陈雪梅钟文李军卢忠远喻庆华罗凯
Owner JIAHUA SPECIAL CEMENT
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