Pipe periphery backfilling material suitable for flexible pipeline and preparation method and backfilling method of pipe periphery backfilling material

A technology of flexible pipes and admixtures, which is applied in sewer pipe systems, waterway systems, buildings, etc., and can solve the problems of non-compact backfilling at the axillary corners of flexible pipes, failure to meet the required compactness, and supercritical instability of flexible pipes. Achieve the effect of reducing the risk of soil loss around the pipe, improving the efficiency of backfilling operations, and reducing road surface subsidence
CN113105190AInactive Publication Date: 2021-07-13SHANGHAI URBAN CONSTR MATERIAL CO LTD
6 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI URBAN CONSTR MATERIAL CO LTD
Publication Date
2021-07-13
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a pipe periphery backfilling material suitable for a flexible pipeline and a preparation method and a backfilling method of the pipe periphery backfilling material. The pipe periphery backfilling material comprises the following components: 12 wt%-17 wt% of water, 1.2 wt%-1.5 wt% of cement, 14 wt%-19 wt% of fly ash, 53 wt%-57 wt% of fine sand, 6.2 wt%-7.6 wt% of stone powder, 0.4 wt%-0.6 wt% of a setting accelerator and 0.2 wt%-0.7 wt% of a water reducing agent. According to the pipe periphery backfilling material suitable for the flexible pipeline and the preparation method and the backfilling method of the pipe periphery backfilling material, the material does not need layered compaction in the backfilling process, it can be guaranteed that backfilling is dense at the haunch corner of the flexible pipeline, the stability of the overall structure of a flexible drainage pipe under a heavy-load pavement is guaranteed, the problems of pavement collapse, cracking and the like can be solved, the backfilling operation efficiency of the flexible drainage pipe is improved, and the backfilling cost is reduced. The preparation method and the backfilling method are simple and convenient to use.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of engineering materials, in particular to a pipe circumference backfill material suitable for flexible pipelines, a preparation method and a backfill method thereof. Background technique

[0002] With global climate change, frequent occurrence of urban waterlogging disasters, and increasing emphasis on urban waterlogging prevention and sewage quality improvement and efficiency enhancement across the country, flexible pipes represented by buried plastic drainage pipes are used in various pipe network renovation projects. be widely used. Compared with traditional concrete drainage pipes, plastic drainage pipes have the advantages of light weight, small water resistance coefficient, corrosion resistance, good airtightness, convenient transportation and installation, and fast construction speed. In recent years, the application proportion of flexible drainage pipes has been increasing due to the construction requirement...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More