Relief Joint Art. 450.04
b.Measured Quantities. This work will be measured for payment in feet (meters), measured along the joint.
449.08 Basis of Payment. This work will be paid for at the contract unit price
per foot (meter) for REMOVAL AND REPLACEMENT OF PREFORMED ELASTOMERIC JOINT SEALS FOR PAVEMENT. SECTION 450. RELIEF JOINT
450.01 Description. This work shall consist of constructing a relief joint in
existing pavement.
450.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Hot-Poured Joint Sealer .................................................................... 1050.02
b.Preformed Expansion Joint Fillers ...................................................... 1051.09
450.03 Equipment. Equipment shall be according to the following.
a.Concrete Saw. The concrete saw shall be equipped with a diamond blade of sufficient size to saw pavements full-depth and be capable of accurately maintaining cutting depth and alignment.
b.Wheel Saw. The wheel saw shall be equipped with carbide tipped rotating cutters and be capable of accurately maintaining cutting depth and alignment. CONSTRUCTION REQUIREMENTS
450.04 General. The relief joint shall be formed by full-depth sawing of the
existing pavement with a concrete saw or a wheel saw. The joint shall be straight and perpendicular to the centerline, with a tolerance of 1 1/2 in. in 12 ft (40 mm in 3.6 m). Prior to installing the preformed expansion joint filler, the sawed faces of the pavement shall be cleaned with compressed air. If the sawing operation disturbs or displaces the subbase, the disturbed subbase shall be removed and replaced with compacted FA 1 or FA 2 to the bottom of the existing pavement. The preformed expansion joint filler shall be installed in a compressed condition in the sawed joint. The method used shall minimize damage to the filler. The hot-poured joint sealer shall be installed as shown on the plans and in the saw cut extensions created by the concrete saw. The hot-poured joint sealer shall be placed according to Article 420.12. The joint sealer shall cure to the satisfaction of the Engineer prior to opening to traffic. Art. 450.04 Crack Sealing Hot-Mix Asphalt Pavement Wheel saw cut extensions or other large areas removed from the shoulders shall be replaced with the same material as in the existing shoulder before opening to traffic. Excess material shall be disposed of according to Article 202.03.
450.05 Method of Measurement. This work will be measured for payment in
feet (meters) along the joint from edge to edge of pavement.
450.06 Basis of Payment. This work will be paid for at the contract unit price
per foot (meter) for RELIEF JOINT, of the width specified. If the sawed joint closes and the Engineer requires resawing the joint, this resawing will be paid for according to Article 109.04. SECTION 451. CRACK SEALING HOT-MIX ASPHALT PAVEMENT
451.01 Description. This work shall consist of routing, cleaning, and sealing
transverse and longitudinal reflected cracks in existing hot-mix asphalt (HMA) pavement.
451.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Hot-Poured Joint Sealer .................................................................... 1050.02
451.03 Equipment. The routing machine shall have a steel, circular cutting
head with carbide tipped cutters mounted radially. The machine shall be capable of routing a uniform, square shape approximately 3/4 x 3/4 in. (19 x 19 mm) in either a straight or irregular line. The kettle used for heating the sealer shall be double-jacketed. CONSTRUCTION REQUIREMENTS
451.04 General. Primary transverse and longitudinal working cracks shall be
routed, cleaned, and sealed. Any adjacent secondary cracks shall be only cleaned and sealed as directed by the Engineer. Cracks shall be routed following the crack as nearly as possible, approximately 3/4 in. (19 mm) wide by 3/4 in. (19 mm) deep as close to a 1:1 ratio as possible. Immediately ahead of sealer placement, dust and debris shall be blown from the crack with a power brush/blower or with compressed air with a minimum pressure of 90 psi (620 kPa). When compressed air is used, the pneumatic tool lubricator must be bypassed and a filter installed on the discharge valve to keep water and oil out of the lines. The hot-poured joint sealer shall be continuously and mechanically agitated during heating. The sealer shall be applied using the methods and equipment recommended by the manufacturer, except it shall only be placed when the air temperature in the shade is 40 °F (5 °C) or greater.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 304–305 of 1,217. View official source ↗