PORTLAND AND CEMENT CONCRETE PAVEMENT SECTION 501 139 DIVISION 500 — RIGID PAVEMENT
501.1Description .
This work consists of constructing PCC pavement.
501.2Materials.
Construction.
program pre -approved by the Department, to supervise all concrete finishing work. Provide the flatwork certification to the engineer before placing concret e.
slip-forms, construct small or irregular areas or areas inaccessible to the paver with fixed forms. The contractor may hand -finish these areas but must stil l meet the performance measures of Section 501.3.9. The Department will not allow dimensions less than 2 -feet wide unless otherwise approved.
Department, the contractor, and others involved in, or affected by, the paving operations.
the plan:
PORTLAND AND CEMENT CONCRETE PAVEMENT SECTION 501 140 9. procedure, including the finishing screed, for forming and constructing small or irregular shaped portions of pavement;
route from the concrete plant;
and
accordance with Section 1022. 501.3.1 Construction.
place hardware on the grade until the engineer provides approval.
when identified as the dowl bar placement method in the means and methods plan . Clearly mark, on both sides of the pavement, the center of each load transfer assembly using paint, stakes, or other agreed upon methods to show that the transverse sawed joints are properly located. Construct load transfer assemblies in accordance with the contract. Apply a graphite coating to each dowel bar just before concrete placement . Cut the shipping or tie wires on the dowel support basket after staking. The engineer will check initial dowel bar placement on grade with a template or other approved tool provided by the contractor.
will be placed adjacent with new concrete lanes. Provide and install tie bars for tying into concrete lanes placed under previous contracts. Install these items during or before concrete placement and in accordance with the means and methods plan . Obtain approval for the installation method before beginning concrete placement.
cause any pooling of water on the grade.
forms as part of the paver.
completely fill the void under the screed for the entire width of pavement placed. The PORTLAND AND CEMENT CONCRETE PAVEMENT SECTION 501 141 Department considers a roll of concrete covering approximately half of the distributing augers to be desirable. The contractor may use spreaders in advance of the paver to control the concrete supplied to the paver.
pre-paving meeting submittal.
opening along the edges of the existing concrete using duct tape, caulk, or other approved material to prevent stones or grout from entering the saw cut.
of the paver tracks over the previously constructed pavement with no overhang across the pavement edge to prevent breaking. Use rubber facing, wood, or other approved protection if the paver tracks contact the existing pavement surface. Concrete in the completed lane must achieve a compressive strength of at least 2,000 pounds per square inch before placing adjoining pavement.
vibrators taking care not to dislodge previously placed dowel bars, tie bars, or tie bolts or to contact the forms.
a damp burlap drag longitudinally along the placement area. Texture and cure in accordance with Sections 501.3. 5 and 501.3. 6.
concrete compressive strength reaches 2,000 pounds per square inch. If stripping forms sooner than 5 -days following concrete placement, apply curing compound or extend other curing methods immediately.
modify the paver screed to provide a chamfer at the end of the PCC pavement that forms a wedge -shaped pavement edge.
pavement cross slope and width.
assist in the surface finish of small, irregular areas inaccessible to the paver. The Department will not allow steel trowels for finishing surfaces.
retardant through the use of a previously approved misting or fogging device. The Department will not allow application of water shaken from brushes or applied thro ugh a hose.