SECTION 40
PORTLAND CEMENT CONCRETE PAVEMENT
302
• Prior to completion of float finishing and texturing, water shall not be applied
to the pavement surface in excess of the amount lost by evaporation.
• Placement of concrete shall cease at such time that finishing operations can be
completed during daylight hours, unless lighting facilities provided by the
Contractor are determined by the Engineer to be adequate for allowing later
placement and finishing.
40-1.09A Stationary Side Form Finishing
• After spreading and compacting, concrete shall be given a preliminary finish
by one of the following methods:
40-1.09A(1) Machine Float Method
• Self-propelled machine floats shall be used to finish pavement smooth and true
to grade.
• The number and capacity of machine floats furnished shall be adequate to
perform all work required at a rate equal to that at which concrete is delivered. Any
delay exceeding 30 minutes in performing preliminary finishing shall constitute
cause for stopping delivery of concrete until machines performing the work are
again in proper position to continue without delay.
• Machine floats shall be capable of running either on side forms or on adjacent
lanes of pavement. When machine floats run on adjacent pavement, its surface
shall be protected as specified in Section 40-1.07, "Spreading, Compacting and
Shaping."
• Floats shall be constructed of hardwood, steel or steel-shod wood. They shall
be equipped with devices to permit adjusting the under side to a true flat surface.
40-1.09A(2) Hand Method
• Pavement shall be finished smooth and true to grade with suitable manually
operated floats or powered finishing machines.
• Finishing shall take place as far back of concrete spreading operations as
concrete remains workable, and the number of passes shall be sufficient to remove
all perceptible inequalities.
40-1.09B Slip-Form Finishing
• Pavement shall be given a preliminary float finish by means of devices
incorporated in the slip-form paver. These may be supplemented, at the
Contractor's option, with suitable machine floats.
• Any edge slump of pavement, exclusive of edge rounding, in excess of 6 mm
{0.02-foot} shall be corrected before concrete has hardened.
40-1.10 FINAL FINISHING
• After preliminary finishing has been completed, edges of initial paving widths
shall be rounded to 12 mm {0.04-foot} radius. Transverse contact joints and the
edge of longitudinal contact joints adjacent to hardened concrete pavement shall be
rounded to 6 mm {0.02-foot} radius.
• In advance of curing operations, pavement shall be given an initial and a final
texturing. Initial texturing shall be performed with a burlap drag or broom device
which will produce striations parallel with centerline. Final texturing shall be
performed with a spring steel tine device which will produce grooves parallel with
centerline. The spring steel tine device shall be operated within 130 mm
{5 inches}, but not closer than 75 mm {3 inches}, of pavement edges.



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