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

A technology of expanding clinker and calcium oxide, which is applied in the field of building materials and concrete admixtures, can solve the problems of calcium oxide expanding clinker such as weathering resistance, poor moisture resistance, fast hydration speed, and weak shrinkage compensation ability, etc. Significant benefits, long shelf life, and easy access to results
CN104671689BActive Publication Date: 2017-05-17JIANGSU SOBUTE NEW MATERIALS
9 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU SOBUTE NEW MATERIALS
Publication Date
2017-05-17

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 expanding clinker as well as a preparation method and application thereof. The preparation method of the modified calcium oxide expanding clinker comprises the following steps: forming a dense calcium sulfate layer on the surface of an expanding clinker through reaction between sulfur dioxide gases or sulfuric acid and the calcium oxide expanding clinker, thus preparing the modified calcium oxide expanding clinker. The modified calcium oxide expanding clinker can be mixed with a dispersion supporter, thus forming a modified calcium oxide concrete expansive agent. The sulfated packing modified calcium oxide expanding clinker prepared by the preparation method and the expansive agent thereof have the beneficial effects that the expansion quantity and expansion stress of the expanding material in cement concrete are obviously increased, thus optimizing the expansion processes of the expanding clinker and the expansive agent thereof; the weather resistance and moisture resistance of the calcium oxide expanding clinker and the expansive agent thereof are improved.
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 a building material with abundant raw materials, the ability to absorb industrial waste, low energy consumption and cost, and the largest and most versatile building materials that can be used in combination with steel bars. However, due to its low ultimate tensile rate, it is easy to shrink and crack under the effects of drying shrinkage, creep, temperature, etc., resulting in leakage of concrete engineering and corrosion of steel bars, which seriously affects the durability of structures. Shrinkage-compensating concrete prepared with expansion agent is one of the effective technical approaches to solve shrinkage cracking of concrete materials.

[0003] It is an important measure to prevent the shrinkage...

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