Nanometer reinforced quick-setting viscosity agent and its application in concrete

By combining aluminum salt-based quick-setting components, surface-modified nano-silica, and ion-triggered thickening polymers, the storage stability and synergistic effects of nano-reinforced quick-setting thickeners are solved, achieving a synergistic effect of rapid setting and thickening, suitable for applications such as shotcrete and shotcrete mortar.

CN122586431APending Publication Date: 2026-08-18ANHUI ZHEAN NEW MATERIAL TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610878015.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-17
Publication Date
2026-08-18

AI Technical Summary

Technical Problem

Existing nano-reinforced quick-setting thickeners are prone to agglomeration and sedimentation in high-salt, acidic, or multi-ionic environments, resulting in poor storage stability. Furthermore, the synergistic effect between ion-triggered thickening systems and quick-setting components is insufficient, leading to excessive viscosity in the early stages, instability in the later stages, or significant strength loss.

Method used

By combining aluminum salt-based quick-setting components, surface-modified nano-silica, ion-triggered thickening polymers, and organic acid stabilizing components, a quick-setting thickener that is stably dispersed under acidic storage conditions is constructed. Under alkaline conditions and the action of Ca2+, a thickening network is formed, achieving synergistic effects of quick-setting and thickening.

Benefits of technology

It achieves good adaptability in transportation, storage and construction stages, has a fast setting and hardening speed and slurry cohesion, reduces the rebound rate of spraying, improves material adhesion and construction quality, and improves early strength and later mechanical properties.

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Abstract

The application discloses a nano-enhanced quick-setting viscosity increasing agent and application thereof in concrete. The quick-setting viscosity increasing agent comprises an aluminum salt quick-setting component, surface modified nano-silica, an ion triggered viscosity increasing polymer, an organic acid stabilizing component and water. The quick-setting viscosity increasing agent can be stably dispersed under acidic storage conditions, and after being contacted with a cement-based material, a viscosity increasing network is formed under an alkaline environment and the action of Ca2+, so that quick setting and viscosity increasing are synergized. The surface modified nano-silica has good dispersion stability and nucleation promoting effect, and the ion triggered viscosity increasing polymer can quickly improve the cohesiveness of a paste and the structure establishment speed. The prepared quick-setting viscosity increasing agent has the advantages of good storage stability, fast setting speed, strong wall hanging property, low rebound rate and good strength maintenance, and can be applied to sprayed concrete, sprayed mortar, quick repair mortar and facade printing cement-based materials.
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