A kind of modified calcium oxide type expanded clinker, its preparation method and its application

A technology of expanded clinker and calcium oxide, which is applied in the field of building material concrete admixtures, can solve the problems of calcium oxide type expanded clinker, such as weathering resistance, poor moisture resistance, weak shrinkage compensation ability, and fast hydration speed, and achieves social and economic benefits. Significant benefits, easy access, long shelf life results
CN104692693BActive Publication Date: 2017-06-20JIANGSU SOBUTE NEW MATERIALS
10 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU SOBUTE NEW MATERIALS
Publication Date
2017-06-20

Smart Images

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

Abstract

The invention relates to a modified calcium oxide expansion clinker as well as a preparation method and application thereof. The preparation method of the modified calcium oxide expansion clinker comprises the following steps: carrying out physical adsorption and chemical reaction on calcium oxide expansion clinker powder in phosphoric acid which serves as a solvent, or mixing a calcium oxide expansion clinker with phosphoric acid and grinding the mixture into powder of a certain finesses, and forming a large number of compact calcium phosphate on the surface of the calcium oxide expansion clinker powder to obtain the modified calcium oxide expansion clinker. The modified calcium oxide expansion clinker can be mixed with a dispersible carrier to form a modified calcium oxide concrete expansion agent. By adopting the phosphorylated coated modified calcium oxide expansion clinker and the modified calcium oxide concrete expansion agent, the expansion quantity and expansion stress of an expansion material in cement concrete can be increased significantly, the expansion process of the modified calcium oxide expansion clinker and the modified calcium oxide concrete expansion agent can be optimized, and the weather resistance and moisture resistance of the modified calcium oxide expansion clinker and the modified calcium oxide concrete expansion agent can be enhanced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of concrete admixtures for building materials, and in particular relates to a modified calcium oxide expansion clinker, its preparation method and its application. Background technique

[0002] Concrete is the most widely used building material. Cracks have always been a key factor affecting the durability of concrete and its structures, and the shrinkage of concrete is the direct cause of concrete cracking. The early drying shrinkage and temperature drop shrinkage of concrete will bring challenges to the usability and stability of concrete structures. Therefore, improving the crack resistance of concrete has always been a research hotspot.

[0003] Compensating the shrinkage of cement-based materials by using the volume expansion produced by the expansive components during the hydration process is an important measure to reduce shrinkage and cracking of concrete and improve the stability of concrete struct...

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