A synergistic process of carbonization and hydration of steel slag

A steel slag and process technology, applied in the field of steel slag carbonization and hydration synergistic process, can solve the problems of low degree of internal reaction, restricting the application field of products, reducing the mechanical properties of steel slag products, etc. Environmental pollution problems, the effect of improving mechanical and durability performance
CN109437828BActive Publication Date: 2021-08-17WUHAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2021-08-17

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Abstract

The invention belongs to the technical field of building materials, and in particular relates to a steel slag carbonation and hydration synergistic process. The process includes: 1) pre-wet treatment of light pottery sand; 2) uniformly mixing pre-wet light pottery sand with steel slag and quartz sand according to the following mass ratio: 50-70 parts of steel slag, 18-30 parts of quartz sand, pre-wetted light pottery sand, 5 to 20 parts of wet light pottery sand; (3) pressed into shape, immediately placed in a carbonization box for carbonization, followed by standard curing. The invention utilizes the chemical characteristics of steel slag having both carbonization activity and hydration activity, and introduces the synergistic mechanism of carbonization curing and pre-wet ceramic sand internal maintenance to improve the overall reaction degree of steel slag and further improve the mechanical and durability properties of steel slag products; the prepared Steel slag products have the characteristics of high homogeneity of carbonized matrix, excellent mechanical properties and durability, low cost and high environmental friendliness.
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Description

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a steel slag carbonation and hydration synergistic process. Background technique

[0002] my country is a country with a large steel output, and the resulting steel slag is as high as tens of millions of tons every year. The effective comprehensive utilization of steel slag has been relatively mature abroad. The application of steel slag in road construction in developed countries such as the European Union, Japan and the United States has reached 54%, 36% and 52% respectively, of which only about 10% of steel slag in Germany is not used due to quality problems and is stored in the yard. However, there is still a big gap between my country and developed countries in the research and application of steel slag reuse.

[0003] At present, the application of steel slag is mainly concentrated in the fields of road base filler and cement admixture, and the stre...

Claims

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