-In this case, the contractor filled the hole with RE 500 V3. However, while the recommended embedment depth was 200 mm, the epoxy was only filled up to 100 mm. The anchor has already been installed, and the epoxy has fully cured.
-This means the installation did not meet the required volume of RE500 v3 to achieve full hole filling.
Questions:
-Is there a way to fill the remaining voids in the hole?
-If yes, how should it be done?
-If not, what is the recommended solution?
-Kindly provide any technical reference supporting this case.
To ensure that the anchor installed on site achieve its design capacity, the installation must be properly executed according the manufacturer's installation instruction which includes the proper volume of mortar to be filled in the hole. There is no provisions mentioned from ACI and ETAG regarding the rectification if ever the mortar volume applied on the hole is lower than what is required.
Since the connection integrity is critical in this case, we recommend to either completely remove the anchor together with the mortar and install a new one or install another anchor beside the existing.
To remove the anchor with mortar completely you need to use a core drill then use a roughening tool around the newly cored hole. Then you may now install the new anchor assembly.
A provision from ETAG 001 Part 1 states that you can install another anchor beside the aborted hole given that anchoring depth is increased by the depth of the aborted drill hole, or make a new drilling at a minimum distance away of twice the depth of the aborted hole. See attached screenshot.
