Green backfilling method based on all-solid-waste engineering soil

Through the mixing of all solid waste engineering soil and automated atomization protection device, the complexity and environmental pollution problems of traditional backfill materials in deep and narrow space construction are solved, and efficient and environmentally friendly backfill effects are achieved, which improves the strength of backfill materials and stability.

CN119308324AActive Publication Date: 2025-01-14CHINA MCC22 GROUP CORP LTD +2
5 Cites -1 Cited by

Patent Information

Application Number
CN202411851963.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-16
Publication Date
2025-01-14
Estimated Expiration
2044-12-16

AI Technical Summary

Technical Problem

Traditional backfill materials are complex in deep and narrow irregular spaces, with low efficiency and high cost, and are difficult to ensure density, resulting in uneven settlement and environmental pollution. The use of cement in existing fluid solidified soil leads to soil degradation and high costs.

Method used

The total solid waste engineering soil is mixed with filter pressed alkali slag, calcium carbide slag, phosphogypsum and slag in proportion, and the optimal moisture content is ensured through mechanical crushing and screening, grading, drying, and automated atomization protection devices to stimulate the formation of slag activity. Hydrating gelling reaction to achieve strength improvement.

Benefits of technology

The strength of conventional backfill soil can be achieved without adding cement, saving maintenance costs, reducing environmental pollution, promoting the resource utilization of solid waste, and improving construction efficiency and stability through automated devices.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a green backfilling method based on all-solid waste engineering soil, and relates to the technical field of backfilling of various deep, long and narrow irregular spaces such as grooves and fat grooves in house construction engineering and road and bridge engineering. The backfill material is composed of saturated surface dry filter pressing alkaline residues, carbide slag, ardealite and slag in a specific particle size range and replaces traditional natural soil to serve as a backfill matrix, the activity of a slag material is stimulated by means of alkaline materials such as the alkaline residues, under the action of a proper amount of water, the material is promoted to be subjected to a hydration gelling reaction, and the performance of the material is further improved. While the later maintenance and repair cost is saved, the environmental pollution is reduced, and the resource utilization of solid waste materials is promoted.
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Citation Information

Patent Citations

  • Method for making cored building material block by using solidified soda residue soil

    CN103304213A

  • Soda residue soil regeneration backfill material and preparation method thereof

    CN110734266A

  • All-solid-waste engineering soil prepared from large-mixing-amount filter-pressing alkaline residues and multiple solid wastes and preparation method of all-solid-waste engineering soil

    CN117534435A

  • Solid waste-muck synergetic and full-particle-size optimized fluid-state solidified soil and preparation method thereof

    CN118005360A

  • Method for preparing road surface structure layer comprehensive stable soil by using caustic sludge instead of quick lime

    CN1858356A

Cited By

  • Phosphogypsum-based fine aggregate as well as preparation method and application thereof

    CN121850420A