Core-shell type sulphoaluminate cement-based high-strength lightweight aggregate and preparation method thereof

A technology of sulfoaluminate cement and lightweight aggregate, applied in the field of building materials, can solve the problems of insignificant thermal insulation effect and insufficient strength, and achieve the effects of improving the setting time too fast, enhancing the bearing capacity, and being easy to achieve.
CN110526609AActive Publication Date: 2019-12-03WUHAN UNIV OF TECH
7 Cites 22 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2019-12-03

Smart Images

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

Abstract

The invention relates to a core-shell type sulphoaluminate cement-based high-strength lightweight aggregate and a preparation method thereof. With the high-strength lightweight aggregate, a lightweight and high-strength spherical fly ash ceramsite is used as a core; and a sulphoaluminate cement-based cementitious material is coated onto the surface of the fly ash ceramsite to form a shell layer with a porous structure. According to the invention, a proper cementitious material is selected to be coated onto the fly ash ceramsite to prepare the core-shell type sulphoaluminate cement-based high-strength lightweight aggregate, so the bearing capacity of a light aggregate is reinforced, and the strength of light aggregate concrete is improved; meanwhile, by using of ordinary portland cement, fly ash and silica fume as additives, the defects like over-rapid setting time and later-stage strength shrinkage of sulphoaluminate cement are improved, and the bonding strength of a core material anda shell material is reinforced, so the overall strength of core-shell type lightweight aggregate concrete is significantly improved, and the light aggregate concrete can be more extensively applied.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention belongs to the technical field of building materials and relates to a core-shell type sulfoaluminate cement-based high-strength lightweight aggregate and a preparation method thereof. Background technique

[0002] With the development of modern buildings to large-span and high-rise buildings, in order to reduce structural cross-sections, reduce structural weight, and improve structural thermal insulation performance, lightweight, high-strength, durable, and sustainable building materials have become an important research topic in civil engineering. It is also one of the important development directions of modern concrete technology. In order to solve the above problems, the development and preparation of lightweight and high-strength aggregate concrete is of great significance.

[0003] At present, the lightweight aggregates used in concrete are mainly artificially fired ceramsite materials. However, the existing ceramsite has too high bulk de...

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