Process for preparing and underwater curing of a polymeric material for solidifying underwater sediments

By using an alkali-activated system, a polymer material with multi-component modifiers, and a high-pressure jetting construction process, the problem of underwater sediment hardening is solved, achieving a highly efficient and environmentally friendly bottom sealing effect, suitable for deep and large foundation pits and vertical ultra-deep caisson projects.

CN122233698APending Publication Date: 2026-06-19YOUYUAN (TIANJIN) MATERIAL TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YOUYUAN (TIANJIN) MATERIAL TECHNOLOGY CO LTD
Filing Date
2026-03-22
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In deep foundation pits and vertical ultra-deep caisson projects, underwater sediment is difficult to clean thoroughly, resulting in reduced concrete density and impermeability, and poor sealing effect. Traditional inorganic curing agents have slow curing speed and low strength in high moisture content environments, and organic materials are easily degraded underwater, making it difficult to achieve large-scale application of existing construction techniques.

Method used

The polymer material, which uses an alkali-activated system and multi-component modifiers, is solidified in situ underwater with sediment through a high-pressure jetting process to form a high-strength, impermeable sealing layer. The material design takes into account the reaction stability and mixing uniformity in high moisture content environments, and the supporting equipment is adapted to complex underwater terrain.

Benefits of technology

It enables rapid solidification of underwater sediment, forming a high-strength, well-integrated sealing layer, improving construction efficiency and project adaptability, reducing project costs, and the material is non-toxic and harmless, suitable for complex underwater working conditions.

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Abstract

This invention discloses a polymeric material preparation and underwater solidification construction process for solidifying underwater sediment, relating to the field of underwater sediment treatment technology. The material is composed of 15-30 parts of an alkali activator, 60-80 parts of a solid precursor, 3-6 parts of a functional synergist, and 25-40 parts of water. The alkali activator is an aqueous solution of sodium hydroxide, water glass, and potassium hydroxide. The solid precursor is a composite powder of fly ash, slag powder, and metakaolin. The functional synergist includes short-cut basalt fibers, ettringite expanding agent, sodium dihydrogen phosphate, calcium nitrite, sepiolite powder, cellulose nanocrystals, sodium citrate, sodium aluminate, sodium lignosulfonate, fly ash cenospheres, borax, and an amino-containing hyperbranched liquid crystal polymer. This polymeric material exhibits excellent strength, impermeability, and erosion resistance.
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