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Section 25 – Portland Cement Concrete Pavement

slip-form pavers and finishing machines over a five-hundred-foot (500’) length of prepared

subgrade, with all propulsion and control equipment fully operational.

Unless otherwise required by these Specifications or the Contract, concrete pavement shall

be constructed in twelve-foot (12’) traffic lane widths separated by contact joints, or

monolithically in multiples of twelve-foot (12’) traffic lane widths with a longitudinal weakened

plane joint at each traffic lane line.

All pavement concrete shall be placed while fresh. The use of water for retempering any

concrete will not be permitted. The temperature of the concrete mix at the time of placement

shall not exceed 90°F.

25-7 FINISHING CONCRETE PAVEMENT

The surface of concrete pavement shall be finished smooth and true to grade with wooden

floats. Floats shall be operated from the end of the pavement and parallel with the centerline of

High areas of concrete pavement shall be cut down using the edge of a float while the

concrete is workable. Material removed by the float shall be worked into depressions by the

float until a true surface is obtained.

Finishing and floating of the concrete pavement shall continue after concrete placement has

stopped, until the concrete has achieved initial set.

25-8 CURING PORTLAND CEMENT CONCRETE PAVEMENT

The curing of portland cement concrete pavement shall be with a pigmented curing

compound as specified in Section 50-6, “Curing Compounds for Concrete“, of these

25-9 PROTECTION OF PAVEMENT

The Contractor shall protect the surface of the concrete pavement from damage and

markings, both from pedestrian and other traffic. Barriers shall be placed as necessary to

protect the concrete from traffic.

The concrete pavement shall be maintained at a temperature of not less than 45°F for

seventy-two (72) hours after placement. When required by the Agency, the Contractor shall

submit a written outline of the proposed methods for protecting the concrete pavement and

maintaining the required temperature.

When required by the Special Provisions, bridges or other devices shown on the Plans, or

approved by the Agency, shall be furnished and installed by the Contractor across the

pavement to provide crossing for the public and private traffic. The Contractor shall maintain

the crossing devices throughout the period of their use at any location. When no longer

required, the crossing devices shall be removed and disposed of by the Contractor.

After the Agency has ordered the pavement opened to traffic, the Contractor will not be held

responsible for damage resulting from its use by public traffic. The Contractor is liable for any

damage to newly laid pavement caused by the Contractor’s operations.

25-10 PAVEMENT DAMAGE AND REPAIR

All damage done to concrete pavement, or openings cut in concrete pavement or alley

crossings during the progress of the Work, shall be repaired by the Contractor under the

direction of the Agency. Materials for all repairs shall conform to these Specifications.