Grouting Tube Factory Inspection Standards

Before the use of the grouting pipes, the inspection and acceptance should be carried out. They should be stacked in a level area that does not accumulate water, covered with opaque materials to prevent ultraviolet aging, and ensure the integrity of the labels and documentation.

The inspection and acceptance of grouting pipes include: There should be a designated person to inspect them at all times. Each process should be timely inspected and accepted according to design requirements before proceeding to the next process. The main contents of the grouting pipe inspection and acceptance should include initial cleaning, the direction of grouting pipe laying, the connection or overlap of grouting pipes, the connection between grouting pipes and other structures, backfill material, weight, and protective layer, etc.

Engineering acceptance should comply with the following technical requirements: The design unit shall submit all the required technical documents to the acceptance team. The on-site visual inspection of the project's appearance quality shall be conducted. Random sampling of joints or seams for quality inspection shall be performed on-site. The acceptance conclusion should be either "Pass" or "Fail," with the main basis for the conclusion noted. When there is reciprocating water flow, it is advisable to lay a thick sand layer of 5-10 cm under the fabric. At this time, lapping should not be used to prevent sand from entering the gaps and separating the fabric. When dynamic loads are applied, the sand layer should be laid first. Advantages of waterproof grouting pipes: A layer of grouting pipe is added on the surface to form a composite waterproof board. When using waterproof grouting pipes, a product quality certificate should be provided, and the following tests should be conducted: physical indicators: unit area mass, thickness, equivalent aperture, etc.

Mechanical properties: tensile strength, tear strength, holding strength, burst strength, expansion strength, friction strength between material and soil, etc. Hydrological properties: vertical permeability coefficient, horizontal permeability coefficient, gradient ratio, etc. Durability: resistance to aging, resistance to chemical corrosion. Testing must be conducted by a qualified technical quality inspection department. Depending on the project requirements and specific needs, relevant testing items can be added or deleted, and a detailed inspection report will be issued.