A trowel finish shall be applied to the following surfaces [_____];
[_____]; [_____]. Concrete surfaces shall first be given a float finish.
After surface moisture has disappeared, the surface shall be troweled to a
smooth, even, dense finish, free from blemishes, including trowel marks.
In lieu of hand finishing, an approved power finishing machine may be used
in accordance with the directions of the machine manufacturer. A final
hard steel troweling shall be done by hand. Joints shall be carefully made
with a jointing or edging tool. The finished surfaces shall be protected
from stains or abrasions. Surfaces or edges likely to be injured during
the construction period shall be protected from damage.
3.4.1.3
[Broom Finish
**************************************************************************
NOTE: Refer to the appropriate design memorandum
for surfaces to be broom finished. Be sure these
are shown in the drawings.
**************************************************************************
A broom finish shall be applied to the following surfaces: [_____];
[_____]; [_____]. The concrete surface to be broom finished shall first be
given a float finish. The surface shall then be broomed with a [stiff
fiber-bristle broom] [hair broom in a direction transverse to that of the
traffic].]
3.4.1.4
[Abrasive Aggregate Finish
**************************************************************************
NOTE: Refer to the appropriate design memorandum
for surfaces to receive the abrasive aggregate
finish. Be sure this is shown in the drawings.
**************************************************************************
An abrasive aggregate finish shall be applied to the following surfaces:
[_____]; [_____]; [_____]. The concrete surface shall first be given a
float finish. Abrasive aggregate shall be uniformly sprinkled over the
surface immediately after floating, at a rate of not less than 1.22
kg/square meter 1/4 psf. The surface shall be refloated and then be
troweled to a smooth even finish that is uniform in texture and appearance
including trowel marks. Immediately after curing, cement coating or
laitance covering the abrasive aggregate shall be removed by wire brushing,
rubbing with abrasive stone, or sandblasting to expose the abrasive
particles.]
3.4.1.5
[High Velocity Finishes
**************************************************************************
NOTE: Refer to the appropriate design memorandum
for surfaces to receive high velocity finishes. Be
sure these are shown in the drawings.
**************************************************************************
Unformed surfaces subjected to high velocity flow (12 m/s) (40 fps) shall
receive a trowel finish.]
3.4.2
Formed Surface Repair
**************************************************************************
SECTION 03700
Page 62
Previous Page
