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Constructional binding material and construction material

A construction adhesive and material technology, applied in the field of construction cementitious materials and construction materials, can solve problems such as lack of active conditions, waste residue application restrictions, environmental pollution, etc., to improve the use strength and aging resistance, and prevent compression Decrease in strength or even cracking, low cost of reuse

Pending Publication Date: 2019-01-11
广西北港新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the refined steel slag has not undergone water quenching treatment, no vitreous body is produced, and there is no active condition, the application of this waste slag is greatly limited
According to the survey, the refined steel slag discharged from the stainless steel smelting AOD furnace in stainless steel enterprises all over the country is piled up like a mountain, which not only occupies the land, but also brings serious pollution and harm to the environment.
At present, there is no digestion and treatment technology for the production of building cementitious materials using stainless steel refining steel slag at home and abroad

Method used

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  • Constructional binding material and construction material
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The following test examples are building materials made by blending the building cementitious material provided by the present invention with pure silicon cement according to the ratios of 1:9, 1.5:8.5, and 1:4 respectively. The test results of the performance parameters are shown in Table 1.

[0054] Among them, in the slag powder test, the 28d compressive strength of the standard ordinary silicate cement used in the comparative example is required to be 50-60Mpa. In this embodiment, the 28d compressive strength of the 42.5 grade ordinary silicate cement in the comparative example is 58.4Mpa .

[0055] In the test example, pure silica cement: its clinker (containing 5% gypsum) grinding specific surface area is 350m 2 / kg. Building cementitious material: It is made by mixing modified stainless steel refining steel slag and industrial waste slag. The grinding specific surface area of ​​building cementitious material is 430m 2 / kg~550m 2 / kg. Wherein, in above-mention...

Embodiment 2

[0061] In the following test examples, the building materials made by blending 15%, 30% building cementitious material with 85%, 70% ordinary silicon 42.5 grade cement respectively, the test results of their performance parameters are shown in Table 2.

[0062] Wherein, in the comparative example, use 100% 42.5 grade standard ordinary silicate cement, its 28d compressive strength is 54.4Mpa; In the test example, 100% ordinary silicate cement: its clinker (containing 5% gypsum) grinding specific surface area is 350m 2 / kg. Building cementitious material: It is modified refined steel slag and other waste slag mixed and ground with a specific surface area of ​​430m 2 / kg~550m 2 / kg. Wherein, in above-mentioned test example 1-3, the specific surface area of ​​building cementitious material is 500m 2 / kg.

[0063] Table 2

[0064]

[0065] Can see by above-mentioned test example and comparative example, use 30% construction cementitious material provided by the present inv...

Embodiment 3

[0068] The building material that is made by mixing the building cementitious material provided by the invention with concrete, the addition of the building cementitious material is 10%-15% of the total amount of cementitious material in the concrete; the 3d activity index of the building cementitious material is 77%-77.5%, and the fly ash usually used as the cementitious material of concrete, its national standard 28d activity index≧70%, that is to say, the activity index of the building cementitious material provided by the present invention is far greater than fly ash, It can be used as a substitute for some fly ash or all fly ash in concrete. It not only has a high activity index, but also can significantly improve the strength of concrete. At the same time, it has low cost of use. It can not only solve the problem of recycling steel slag, but also improve its utilization. Compared with the commonly used building material concrete, the performance of the made building mater...

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Abstract

The invention provides a constructional binding material made by utilizing refined steel slag and industrial residues and a construction material made by utilizing the constructional binding material.The constructional binding material is made by mixing and grinding stainless steel refined steel slag and industrial residues, wherein the stainless steel refined steel slag is AOD (Argon Oxygen Decarburization) furnace steel slag while smelting stainless steel; and the industrial residues refer to steel plant residues and / or steel slag tailings. The construction material is made by mixing the constructional binding material and cement or concrete. According to the constructional binding material and the construction material provided by the invention, the problem that the stainless steel refined steel slag cannot be recycled can be effectively solved. Moreover, the constructional binding material is high in content of active ingredients, and during practical application, the use intensity of the construction material can be effectively improved, and the timeliness of the use intensity is prolonged.

Description

technical field [0001] The invention belongs to the technical field of reusing refined steel slag, and in particular relates to a building cementitious material made from refined steel slag and industrial waste slag and a building material made from the building cementitious material. Background technique [0002] Refining steel slag is a kind of solid waste produced in the process of smelting stainless steel in AOD furnace, which is alkaline. Since the refining steel slag has not undergone water quenching treatment, no vitreous body is produced, and there is no active condition, the application of the waste slag is greatly limited. According to the survey, the refined steel slag discharged from the AOD furnace of stainless steel enterprises all over the country is piled up like a mountain, which not only occupies the land, but also brings serious pollution and harm to the environment. At present, there is no digestion and treatment technology for producing building cementi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/153C04B7/24C04B7/345
CPCC04B7/153C04B7/243C04B7/345C04B2201/50Y02P40/10
Inventor 李喜才黄庆周廖辉林隆声
Owner 广西北港新材料有限公司
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