7.3.2 Placing—Place the concrete in the molds using a
scoop, blunted trowel, or shovel. Select each scoopful, trowelful,
or shovelful of concrete from the mixing pan to ensure
that it is representative of the batch. It may be necessary to
remix the concrete in the mixing pan with a shovel or trowel to
prevent segregation during the molding of specimens. Move
the scoop or trowel around the top edge of the mold as the
concrete is discharged in order to ensure a symmetrical
distribution of the concrete and to minimize segregation of
coarse aggregate within the mold. Further distribute the concrete
by use of a tamping rod prior to the start of consolidation.
In placing the final layer the operator shall attempt to add an
amount of concrete that will exactly fill the mold after
compaction. Do not add nonrepresentative samples of concrete
to an underfilled mold