Construction method of foam lightweight concrete suitable for long-distance pipeline transportation

By improving construction techniques, including pipeline lubrication, buffer pouring, and segmented, layered, and block pouring, the stability problem of foamed lightweight concrete in long-distance pipeline transportation was solved, achieving efficient long-distance transportation and improved construction efficiency.

CN121573945APending Publication Date: 2026-02-27GUANGDONG SHENGRUI TECH CO LTD +2
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Patent Information

Application Number
CN202511763936.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-27
Publication Date
2026-02-27

AI Technical Summary

Technical Problem

Existing foamed lightweight concrete suffers from material performance degradation during long-distance pipeline transportation, making stable transportation difficult.

Method used

High-pressure hoses with a diameter of DN100mm-DN150mm are used, and a lubricating layer is formed by pre-wetting the inner wall of the pumping pipeline with a 0.05%-0.15% aqueous solution of hydroxypropyl methylcellulose. The foamed lightweight concrete is transported by a hydraulic piston pump, and the pumping pressure is controlled at 10-15MPa and the flow rate is controlled at 1.5-2.0 m/s. The concrete is poured in sections, layers, and blocks, and galvanized steel wire mesh and moisture-retaining felt are installed in the poured concrete for curing.

Benefits of technology

It enables stable delivery of foamed lightweight concrete over long distances (≥500 meters), with a bubble survival rate of ≥90%, reduces pumping pressure by 20%-30%, increases construction efficiency by 40%, avoids pipe blockage, and improves construction efficiency and material stability.

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Abstract

The invention relates to the field of building material construction, and discloses a construction method of foam lightweight concrete suitable for long-distance pipeline transportation, and the construction method comprises the following steps: selecting a high-pressure hose with the pipe diameter of DN 100mm-DN 150mm as a pumping pipeline; before the foam lightweight concrete is conveyed, a hydroxypropyl methyl cellulose aqueous solution with the mass concentration of 0.05%-0.15% is used for pre-wetting the pumping pipeline, and a lubricating layer is formed on the inner wall of the pumping pipeline; and the foam lightweight concrete is conveyed to a construction area through the pumping pipeline to be poured. According to the method, through construction process improvement (pipeline lubrication and buffer pouring), the foam light soil can be transported for a long distance (larger than or equal to 500 m).
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