5-126 < 8 inches
518.52 Repair of Upward Facing Surfaces > 8 inches C u b i c Y a r d
518.60 Repair of Vertical Surfaces < 8 inches S q u a r e F o o t
518.61 Repair of Vertical Surfaces > 8 inches C u b i c Y a r d
518.70 Repair of Overhead Surfaces < 8 inches S q u a r e F o o t
518.71 Repair of Overhead Surfaces > 8 inches C u b i c Y a r d
SECTION 519 - EXPANSION DEVICES – ASPHALTIC PLUG JOINT
519.01 Description This work consists of furnishing and insta lling asphaltic plug joint
systems at the locations shown on the Plans, in accordance with these Specifications, and as directed by the Resident. This work shall include furnishing, i nstallation, and removal of all bond breaking materials used to prevent asphalt pavement layers from adhering to waterproofing membrane, all temporary header(s) installed with the intent to form the asphaltic plug joint channel, and all preparation required for the installation of the asphaltic plug joint. This work shall also include ha ving the approved manufacturer p rovide a qualified technical representative to supervise the installation of the j oint systems. The representative shall instruct, train, and supervise the Contractor’s personnel in the proper methods of installation. All costs associated with this service shall be i ncluded in the unit price of the work.
519.02 Submittals Prior to construction, the Contractor shall submit the following to
the Resident for review and approval:
a.Complete and detailed Shop Drawings of the asphaltic plug j oint system. Shop Drawings shall include information covering materials, their pr operties, installation procedures, storage and handling requirements, and Safety Data Sheets.
b.The resume of the manufacturer’s technical representative, which shall include the representative’s experience installing the asphaltic plug joint system along with the names and telephone numbers of contact persons for recent projects wh ere technical assistance was provided.
c.Certified test reports of the asphaltic binder, closed cell foam backer rod, and the plastic compound.
d.Certificates of Compliance for bridging plates, centering n ails, and aggregate.
519.03 Materials An asphaltic plug joint system from Departme nt’s Qualified Products
List for Expansion Devices – Non- Modular (Asphaltic Plug Joints ) shall be used. 5-127 The bridging plate shall be ASTM A36 steel, a minimum of 1/4 in ch thick, and galvanized. Holes for the centering nails shall be approximatel y 1 foot center to center along the centerline of plates. Centering nails shall be 16d or larger and hot dip galvanized i n accordance with ASTM A153.
519.04 Installation The asphaltic plug joint system shall be installed in accordance with
the manufacturer’s latest instructions and this specification. Manufacturer’s representatives shall be present during the entire installation to ensure satis factory results are obtained. The asphaltic plug joint system shall allow total joint movemen t for up to 2 inches. The installation shall be centered over the expansion joint gap as indicated on the Plans. It shall not be installed when ambient or substrate temperatures are bel ow 40°F, when rain is imminent, or as directed by the Resident. The area shall be fre e of dirt, dust, moisture, petroleum, or solvents that might contaminate the joint materia ls or reduce the bond of the joint system to the substrate or vertical faces. The use of com pressed air and heat may be required to dry the area before installing the joint system. The asphalt pavement layers shall be removed to the required di mensions shown on the plans. The asphalt pavement shall be sawcut to a depth that wil l not damage the waterproofing membrane, but permit the removal of the asphalt p avement layer. The pavement layer shall be removed in a manner that will not damag e the waterproofing membrane. Bond breakers such as interlayers and fabrics, or tem porary header(s), may be used with new hot mix asphalt placements to avoid unnecessary s awcuts and protect the waterproofing membrane from damage. The method of attaching tem porary header(s) to the concrete deck shall be approved by the Resident. The use of a t emporary header shall not be allowed if it will need to be anchored into a precast prestress ed concrete member. Should a concrete levelling course be required before installing the bri dging plates, and the membrane layer is removed in the process, it shall be replaced before th e asphaltic plug joint system is installed. Vertical surfaces of the asphalt pavement layers sha ll be cleaned to remove all water, dust, or other contaminates. Backer rods shall be installed in expansion joint openings at a minimum of 1 inch depth or as indicated on the Plans. Unless otherwise specified by the asphaltic plug joint system m anufacturer, liquid asphalt binder meeting the requirements of a 64-28 or 58-28 PGA B shall be used to coat the membrane and bridging plate surfaces. The binder shall be heated to 350°F to 410°F, or a safe tempera ture as recommended by manufacturer. Heating kettles shall be equipped with continuous agitation system, temperature controller, calibrated thermometer, and double stee l jacket with an oil layer in between, to prevent scorching of the binder. During application , the temperature of the binder shall be maintained at a minimum of 350°F, but not great er than 410°F. It shall be 5-128 poured and leveled into the expa nsion joint openings until over filled, and the excess binder spread over the area covered by the bridging plates. Steel bridging plates shall be pl aced from curb to curb on the roadway portion of expansion joints. The plates shall be centered over the joint o pening. Centering nails shall be placed in pre-drilled holes and hammered in to secure the plate s. Once the bridging plates are installed, liquid asphalt binder s hall be poured and leveled over the bridging plates and adjacent membrane surfaces in a ma nner that ensures full coverage. Areas with excessive application, such as pooling of liquid, should be removed or dispersed along the joint area. Asphaltic plug joint system aggregate shall be heated in a ro tating drum mixer to a minimum of 350°F but not greater than 410°F, or as recommended by the manufacturer. The thermoplastic polymeric modified asphalt binder shall be added to the mixer to pre-coat the aggregates. Coated aggregate shall be placed into blockouts in layers as re commended by the manufacturer. Blockouts shall be overfilled with coated aggrega te as required to compensate for compaction. Equipment for compaction shall be as recommende d by the manufacturer. Additional thermoplastic polymeric modified asphalt binder shal l be screeded over the compacted joint to fill all surface voids. Top dressing aggregate shall be applied per the manufacturer’s recommendation. Plastic compound shall be used for repairing overcuts in bitumi nous concrete. Cleaning, mixing, and application shall be in conformance to the manufact urer’s instructions. Vehicular traffic may pass over finished joints two-hours after compaction, or as recommended by the manufacturer.
519.05 Method of Measurement A new Asphaltic Plug Joint syste m installation will be
measured by the linear foot along the top surface of installed joints to the limits shown on the Plans. Preparation of surfaces for the proposed joint syste m including cutting, grinding, and cleaning will not be measured separately for payment, but s hall be incidental to the Asphaltic Plug Joint.
519.06 Basis of Payment A new Asphaltic Plug Joint system ins tallation will be paid
for at the Contract unit price per linear foot, which price sha ll be full compensation for all labor, materials, equipment, and incidentals required for furni shing and installing the Asphaltic Plug Joint system as shown on the Plans, in accordanc e with these Specifications, and as directed by the Resident. Payment shall also include all work required to repair the concrete deck where anchors were used with a temporary header, and all patching needed for the waterproofing membrane. 5-129 Payment will be made under: Pay Item Pay Unit
519.60 Expansion Device - Asphaltic Plug Joint Linear F oot
SECTION 520 - EXPANSION DEVICES - NON-MODULAR
520.01 Description This work shall consist of furnishing and i nstalling expansion
devices including the seals, anchorage system and curb, sidewal k expansion dams and barrier sliding plates, where required, as shown on the Plans, in accordance with these specifications and per the seal manufacturer’s published recomm endations. Seals for expansion devices shall be either gland seals or comp ression seals as specified on the Plans.
520.02 Materials Materials shall meet the requirements specifi ed in the following
Sections of Division 700 - Materials: Expansion Device - Gland Seal Stud Shear Connectors, Anchors and Fasteners 711.06 Structural Steel 713.01 High Strength Bolts 713.02 S t e e l E x t r u s i o n s 713.08 E l a s t o m e r f o r S e a l E l e m e n t s 714.01 L u b r i c a n t A d h e s i v e 714.03 Gland Type Seals 714.06 Expansion Device - Compression Seal Stud Shear Connectors, Anchors and Fasteners 711.06 Structural Steel 713.01 High Strength Bolts 713.02 Elastomer for Seal Elements 714.01 Lubricant Adhesive 714.03 S e a l a n t 714.04 Compression Seals 714.05 Gland and compression seals shall be of the general configurati on as shown on the Contract documents and shall be one of the seals listed on the Department’s Qualified Products List.
520.03 Fabrication All work shall conform to the applicable pr ovisions of Section 504-
Structural Steel. The Contractor shall submit Working Drawings in accordance with Section 105.7, Working Drawings.
Source: Maine Standard Specifications for Road and Bridge Construction, 2020 Edition. Pages 418–421 of 817.