When removing the grout from the connections including COPRA®
Anchoring Couplers, it was found out that the threaded bars could actually
be screwed out from concrete and there was no need for any saw cutting
(see figure 8). Also, HPM® Anchor Bolts were cleared relatively easily from
grout, but removal of the grout had to be done by saw cutting, which
demanded more time and effort (see figure 9).
In the last phase, the dismantled precast columns were reinstalled on the
cleaned foundations and reformed connections were grouted again. This
proved the reusability of both precast columns and foundation blocks (see
figure 10).
FIGURE 8 M16 THREADED BARS OF COPRA® ANCHORING COUPLERS
ARE BEING UNSCREWED
FIGURE 9 GROUT PAD REMOVED BY SAW CUTTING FROM
THE FOUNDATION WITH HPM® ANCHOR BOLTS
FIGURE 10 REASSEMBLED PRECAST COLUMNS
PEIKKO CONNECTIONS 1/2021 33
