DYWIDAG Strand Anchor Systems
Post Grouting of anchors can significantly improve the load carrying capacity of anchors in cohesive soils by increasing the skin friction of the anchor grout body with the soil.
The primary grout body in the bond length of the anchor is fractured by introducing additional grout through a post grout line with pressures up to 1200PSI [8MPa].
Post grouting of anchors that initially failed load test acceptace criterion can improve the capacity of the anchor and result in a passing subsequent test. Anchors can be installed with a single or multiple post grout lines.
Benefits of post-grouting are illustrated in the table on the left. This table was developed by Dr. Helmut Ostermayer of the Technical University of Munich based on actual test results.
2. Corrugated Sheathing outer Layer of Corrosion Protection
3. Primary Grout
4. Post Grout Line