Activated diabase stone powder super-high-strength micro-expansion grouting material and preparation method thereof

By combining activated diabase powder with supersulfate cement, fly ash microspheres, and lightly calcined magnesium oxide powder, a high-strength micro-expansion grouting material is prepared, which solves the problems of low activity of diabase powder and insufficient application of supersulfate cement. This achieves efficient utilization of industrial solid waste and low carbon emissions, and is suitable for various engineering applications.

CN122403908APending Publication Date: 2026-07-17HUBEI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUBEI UNIV
Filing Date
2026-04-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, diabase powder has low activity and is often used as an inert filler. Furthermore, there is very little research on the use of supersulfate cement in grouting materials. There is a technological gap in how to achieve high-value utilization of industrial solid waste and low-carbon emission grouting material preparation.

Method used

High-strength micro-expansion grouting material is prepared by using supersulfate cement and activated diabase powder, combined with fly ash microspheres and lightly calcined magnesium oxide powder, and modifying the diabase powder through sulfidation oxidation and carbonization reactions. The expansion rate is controlled within the range of 0.03-0.04%, making it suitable for various engineering applications.

Benefits of technology

It realizes the high-value utilization of diabase powder, improves the fluidity and mechanical properties of grouting materials, reduces carbon emissions, and is suitable for engineering applications such as building reinforcement, prefabricated building sleeve grouting, and wind power grouting construction.

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Abstract

The present application relates to the technical field of cement-based building materials, and particularly relates to an activated diabase stone powder ultra-high-strength micro-expansion grouting material and a preparation method thereof, the present application activates diabase stone powder, selects super-sulfate cement and adds fly ash microbeads as cementitious materials, adds light-burned magnesium oxide fine powder and light-burned magnesium oxide coarse powder to perform hydration cooperation with the cementitious materials, to prepare grouting material with high strength and micro-expansion characteristics, and realize high-value utilization of industrial solid waste.
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Citation Information

Patent Citations

  • Geopolymer cementing material prepared from diabase tailings and preparation method of geopolymer cementing material

    CN120829263A