Dry-mixed mortar, cement-based self-leveling repair material, preparation method and application thereof

By using dry-mixed mortar containing high aluminate cement, anhydrous gypsum, and calcium-magnesium ion chelate salt accelerators, the problems of cracking and shrinkage pores in cement-based self-leveling materials during construction have been solved, achieving efficient and environmentally friendly repair results.

CN122380786APending Publication Date: 2026-07-14ORIENTAL YUHONG SAND POWDER TECH GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ORIENTAL YUHONG SAND POWDER TECH GRP CO LTD
Filing Date
2025-01-14
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional cement-based self-leveling materials are prone to cracking and shrinkage pores during construction due to improper environment or construction methods, resulting in high rework costs and time consumption.

Method used

Dry-mixed mortar, made from high-aluminate cement, anhydrous gypsum, and calcium-magnesium ion chelate salt accelerator, combined with high-quality aggregates and additives, forms a cement-based self-leveling repair material with good adhesion, fluidity, and permeability. It solves cracking and shrinkage pore problems through a slow hydration rate.

Benefits of technology

It achieves a tight bond and seal of the self-leveling layer, forming a wear-resistant protective layer, reducing construction costs and time, improving construction efficiency, avoiding environmental pollution, and is also price-competitive.

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Abstract

The present disclosure provides a dry-mixed mortar, a cement-based self-leveling repair material and a preparation method and application thereof, and belongs to the technical field of cement or concrete, wherein the dry-mixed mortar for the cement-based self-leveling repair material comprises, in parts by weight, 40-55 parts of high-aluminate cement, 5-15 parts of anhydrous gypsum, 10-15 parts of redispersible latex powder, 25-40 parts of a filler, 0.5-1 part of a metal chelate salt accelerator, 0.2-1 part of a dispersant, 0.1-1 part of a water reducing agent, and 0.1-1 part of a retarder; wherein the metal chelate salt accelerator is selected from a calcium-magnesium ion chelate salt accelerator.
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