Portland Cement Concrete Driveway Pavement Art. 423.06 SECTION 423. PORTLAND CEMENT CONCRETE DRIVEWAY PAVEMENT
423.01 Description. This work shall consist of constructing portland cement
concrete driveway pavement on a prepared subgrade.
423.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Portland Cement Concrete ..................................................................... 1020
b.Preformed Expansion Joint Fillers .......................................................... 1051
423.03 Equipment. Equipment shall be according to the following.
Item Article/Section
a.Miscellaneous Equipment .................................................................. 1103.17 CONSTRUCTION REQUIREMENTS
423.04 Subgrade Preparation. The subgrade shall be tamped or rolled until
thoroughly compacted and at the proper line and grade as shown on the plans.
423.05 Forms. Side forms shall be a minimum of 2 in. (50 mm) thick (nominal
dimension) lumber or steel of equal rigidity. They shall be held securely in place by stakes or braces, with the top edges true to line and grade. Forms shall be removed according to Article 420.11.
423.06 Placing, Strike Off, Consolidation, Finishing, Floating, and Final
Finish. The subgrade shall be moistened just before the concrete is placed. The concrete shall be placed in successive batches for the entire width of the slab, struck- off, consolidated with a hand vibrator, and finished to a true and even surface with a screed. Areas which are inaccessible to the screed method may be struck off and finished by hand methods. After strike off, consolidation, and finishing, the concrete shall be further smoothed by a hand-operated longitudinal float or a long-handled float. After the water sheen has disappeared, the surface shall be given a broom finish. The broom shall be drawn across the driveway at right angles to the edges of the driveway, with adjacent strokes slightly overlapping, producing a uniform, slightly roughened surface with parallel broom marks. The surface shall be divided by grooves constructed in the plastic concrete at 10 ft (3 m) maximum intervals both transversely and longitudinally, unless otherwise directed by the Engineer. These grooves shall extend to 1/4 the depth of the driveway, shall be not less than 1/8 in. (3 mm) nor more than 1/4 in. (6 mm) in width, and shall be edged with an edging tool having a 1/4 in. (6 mm) radius. The edges of the slabs shall be edged as described above. A 1/8 in. (3 mm) or 3/16 in. (5 mm) Art. 423.06 Portland Cement Concrete Sidewalk wide sawcut joint that is 1/4 the depth of the driveway may be substituted for a groove. Tie bars will not be required in construction joints; however the joints shall be edged as described above.
423.07 Expansion Joints. At points where the proposed driveway pavement
occupies the entire space between the concrete curb or combination concrete curb and gutter and an adjacent building, permanent structure, existing driveway or other similar obstruction, 1 in (25 mm) preformed expansion joint filler shall be placed between the driveway pavement and the obstruction. The expansion joint filler shall extend the entire depth of the driveway.
423.08 Backfill. After the concrete has been cured, the spaces along the
edges of the driveway pavement shall be backfilled to the required elevation with approved material. The material shall then be compacted, and the surface neatly graded.
423.09 Disposal of Surplus Material. Surplus or waste material resulting
from the driveway construction operations shall be disposed of according to
Article 202 — 03.
423.10 Method of Measurement. This work will be measured for payment in
place and the area computed in square yards (square meters). Earth excavation will be measured for payment according to Article 202.07.
423.11 Basis of Payment. This work will be paid for at the contract unit price
per square yard (square meter) for PORTLAND CEMENT CONCRETE DRIVEWAY PAVEMENT, of the thickness specified. Earth excavation required will be paid for according to Article 202.08. SECTION 424. PORTLAND CEMENT CONCRETE SIDEWALK
424.01 Description. This work shall consist of constructing portland cement
concrete sidewalk and sidewalk accessibility ramps on a prepared subgrade. This work does not include sidewalk that is integrally a part of a structure.
424.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Portland Cement Concrete ..................................................................... 1020
b.Preformed Expansion Joint Fillers .......................................................... 1051
424.03 Equipment. Equipment shall be according to the following.
Item Article/Section
a.Miscellaneous Equipment .................................................................. 1103.17
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 276–277 of 1,217. View official source ↗