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Solutions for Poorly Compacted Grout, Voids, and Grout Leakage in Ducts

Release time:

2025-12-13

Ensure accurate cement slurry mix proportions and control the slump between 14 and 18 seconds. Use vacuum-assisted grouting with a negative pressure of -0.06 to -0.08 MPa.

Major Quality Risks in the Post-Tensioning Method

Solutions:

1. Ensure accurate cement slurry mix proportions and control the slump between 14 and 18 seconds.

2. Use vacuum-assisted grouting with a negative pressure of -0.06 to -0.08 MPa.

3. Seal the grout outlet only after the consistency of the grout has stabilized.

4. Arrange the vent pipes and grout discharge pipes reasonably, ensuring venting at the highest points.

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Solutions for Poorly Compacted Grout, Voids, and Grout Leakage in Ducts

Ensure accurate cement slurry mix proportions and control the slump between 14 and 18 seconds. Use vacuum-assisted grouting with a negative pressure of -0.06 to -0.08 MPa.

2025-12-13

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