We drilling hole for installation HAS-U 8.8 HDG M24 embedment 200mm depth at existing beam, the hole depth+-50mm hit existing beam main rebar, so shift to beside near existing hole continue dill M24 bolt hole and done 200mm depth, clean hole and injection RE500 V4 + HAS-U 8.8 HDG M24 bolt. what materials fill up the existing hole depth.
Hi Dehe Zhang,
Eurocode 1992-4 Annex F and ETAG 001 Part 1 outlines some remedial measures for aborted holes.
There are two scenarios:
1) Filling in with non-shrinkage mortar: In Eurocode 1992-4 Annex F, aborted holes must be filled with a non-shrinkage mortar equal to at least the base material AND 40N/mm^2. On top of this requirement, ETAG 001 states that the new hole has to be the longer option of either 1 x drill depth or 5 x hole diameter.
2) Not filling with non-shrinkage mortar: In ETAG 001, the new hole needs to be 2 times the drill depth away from the aborted hole.
Please do not hesitate to reach out should you have any questions.
