Multi-element solid waste recycled aggregate and preparation process thereof

A recycled aggregate and preparation technology, which is applied in the field of building materials, can solve the problems of poor durability and low strength, and achieve the effects of improved bonding performance, large specific surface area, and small particle size
CN113149586AInactive Publication Date: 2021-07-23CHINA UNIV OF GEOSCIENCES (WUHAN)
4 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (WUHAN)
Publication Date
2021-07-23
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a multi-element solid waste recycled aggregate and a preparation process thereof. The multi-element solid waste recycled aggregate is prepared by taking ardealite, fly ash, slag powder and a water reducing agent as raw materials and utilizing an alkaline activator, an active silicon-aluminum mineral admixture and an organic adhesive through a disc granulation balling process. Through carrying out a disc granulation pelletizing technology and natural hydration to generate ettringite and C-S-H gel to wrap and bond the remaining undissolved ardealite and the admixture together, thereby obtaining the novel building material. After the recycled aggregate is naturally hydrated and formed, the primarily formed aggregate is put into a steam curing box with the temperature being 100 + / -2 DEG C and the humidity being 95% or above so as to accelerate generation of C-S-H particles. The hydration rate is increased, the performance of the recycled aggregate is improved, the water absorption rate of the recycled aggregate is reduced, the water consumption of the recycled concrete is reduced, the strength of the recycled aggregate concrete is obviously improved, and the utilization rate of the recycled aggregate in the concrete is increased.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of building materials. More specifically, the present invention relates to a multi-component solid waste regenerated aggregate and its preparation process. Background technique

[0002] With the development of industrial production, the amount of industrial solid waste is increasing day by day. The amount of industrial solid waste is huge, with various types and complex components, and it is difficult to deal with it. Today, only a limited number of industrial wastes are used, such as the United States, Sweden and other countries that use steel slag, and countries such as Japan and Denmark that use fly ash and coal slag. Other industrial solid wastes are still mainly stockpiled, and some hazardous industrial solid wastes are disposed of by landfill, incineration, chemical conversion and other methods. In fact, industrial waste can be turned into industrial raw materials or energy after proper processing. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More