00584.30 583 Section 00584 - Elastomeric Concrete Nosing
Description
00584.00Scope - This Work consists of furnishing and placing elastomeric concrete nosing to form
a bulkhead at bridge ends or at expansion joints, including cleaning and preparing the concrete or steel surfaces as shown and specified.
Materials
00584.10Materials - Furnish elastomeric concrete nosing using Materials from the QPL . Premixed
polymer concrete meeting the requirements of Section 00557 may be substituted for elastomeric concrete nosing Material, when premixed polymer concrete is specified for the Bridge deck overlay on the same Project.
Provide Materials delivered in their original, undamaged containers bearing the manufacturer's label with the following information:
• Product name • Component part • Name and address of manufacturer • Date of manufacture • Use-by date • Batch number • Mixing ratio
Provide sufficient Materials in storage at the site prior to beginning construction to complete the entire elastomeric concrete nosing as detailed on the Plans or as directed. Store the Materials to prevent damage by the elements and to ensure the Materials maintain their original quality.
Store the Materials so that the storage space is dry and maintains a temperature as recommended by the manufacturer. Use only stored M aterials that meet these requirements at the time of use.
If used, the promoter/initiator for the methacrylate resin may consist of a metal drier and peroxide. Do not mix the metal drier directly with the peroxide. Store the containers so that no leakage from one Material contacts the containers of the other Materials. When making repairs to or filling voids in the existing deck, use epoxy from the QPL.
Equipment
00584.20Equipment - Use Equipment recommended by the product manufacturer and approved by
the Engineer.
Labor
00584.30Manufacturer's Representative - Provide a manufacturer's representative on- site during
the installation of the elastomeric concrete nosing. The manufacturer's representative shall be either someone independent of the Contractor's work force or a member of the Contractor's work force that possesses certification from the manufacture that the Contractor's representative has the knowledge, skills, and training to install the elastomeric concrete nosing. Discuss the Work to be done with the manufacturer's representative to review the methods of installation and the Equipment needed before beginning the Work . 00584.40 584 The representative shall advise both the Engineer and the Contractor on proper installation procedures to assure correct installation of the elastomeric concrete nosing. Mix, place, and cure the elastomeric concrete nosing according to the recommendati ons of the manufacturer's representative.
Construction
00584.40General - Construct elastomeric concrete nosing according to the following:
requirements specific to the M aterials used.
chemicals. Ensure that all workers wear appropriate impermeable protective clothing when using hazardous chemicals.
weather conditions meet the requirements of the manufacturer's representative.
00584.41Surface Preparation - Ensure that all surfaces to receive elastomeric concrete nosing
material are sound, dry, clean, frost free, and sandblasted at the time of nosing installation. Sandblast steel contact surfaces to SSPC -10 Near White Blast Cleaning, immediately before constructing the nosing. Prepare the deck surface according to the Specifications and the material manufacturer's recommendations.
00584.42Existing Concrete Repair - Perform existing concrete repair before installing elastomeric
concrete nosing or expansion joints. Repair the expansion joint edges or concrete deck surface as shown and the following:
• Remove all cracked, spalled, and unsound concrete from the expansion joint area, without damaging existing reinforcement, and replace with elastomeric conc rete. At armored corners, weld damaged areas of steel armoring, and epoxy -inject all voids left by removal of unsound concrete. Replace existing armor as directed. Complete welding of existing armor prior to epoxy injection. • Remove existing expansion jo int material and reconstruct the joint edges as shown. Remove all existing joint anchorage material from the joint areas, as required for installation of new elastomeric concrete nosing.
00584.43Elastomeric Concrete Placement - When an asphaltic concr ete overlay is to be used as
the wearing surface, place a bond breaker on the area where the concrete nosings are to be constructed before placing the asphaltic concrete overlay over the bridge deck joints. After the overlay is placed, sawcut the overlay to the width shown, remove the overlay material in the joint area and construct the elastomeric concrete nosing.
Prepare the elastomeric concrete nosing material by mixing the Aggregate at the recommended temperature with the mixed binder. Clean and dry the bonding surfaces and prepare joint surfaces according to the manufacturer's recommendations. Place the properly mixed elastomeric concrete into the prepared area on each side of the expansion joint. Compact and trowel the elastomeric concrete to the required shape. Form and cast the elastomeric concrete nosing to smoothly match the surface of the finished Roadway . Finish the surface to a moderately rough texture such as that produced by a wood float.
00584.90 585 Protect the elastomeric concrete nosing material from damage, and allow the nosing to cure properly prior to opening the work area to traffic. Do not open up to traffic without the approval of the manufacturer's representative.
Measurement
00584.80Measurement - The quantities of elastomeric concrete nosing will be measured on the
length basis, from face of curb to face of curb taken along the centerline of the joint, between the outer limits of the installed Material . Only one measurement will be taken along each installed joint, regardless of the number of recesses, openings, or voids filled with the elastomeric concrete nosing Material .
The estimated quantities of elastomeric concrete nosing and elastomeric concrete nosing repair are based on a nominal depth of 2 inches.
The quantities of elastomeric concrete nosing repair deeper than 2 inches will be measured on the volume basis.
Joint seal Material will be measured according to 00585.80.
Payment
00584.90Payment - The accepted quantities of Work performed under this Section will be paid for
at the Contract unit price, per unit of measurement, for the following items: Pay Item Unit of Measurement
Item (a) includes elastomeric concrete nosing installed to the depths shown.
Item (b) includes elastomeric concrete nosing repair installed to a nominal depth of 2 inches. Item (c) includes Materials only for concrete nosing repair depths greater than 2 inches. Payment will be payment in full for furnishing and placing all Materials, and for furnishing all Equipment , labor, and Incidentals necessary to complete the Work as specified.
Joint seal Material will be paid for according to 00585.90.
No separate or additional payment will be made for providing the manufacturer's representative.