8−119821.05 BASIS OF PAYMENT. The accepted quantity of "Sawing and Sealing Joints in Bituminous Concrete Pavement" will be paid for at the contract unit price per linear foot as listed in the Proposal. The price so-stated constitutes full and complete compensation for all labor, tools, materials, equipment, and incidentals required to finish the work complete and accepted by the Engineer.
822.01 DESCRIPTION. This work consists of providing silicone joint sealant in highway and bridge
expansion and contraction joints at the locations indicated on the Plans, or as directed by the Engineer, all in accordance with these Specifications. 822.02 MATERIALS. The silicone joint sealant shall be a one-part silicone material that readily extrudes over a wide temperature range and cures to produce a durable, flexible, low modulus, silicone rubber seal. The material shall have an extension recovery of 100 percent and a compression recovery of 50 percent of the original joint width. The silicone sealant shall conform to the requirements of Federal Specifications TT-S-01543 A Class A (one-part silicone sealants) and TT-S-00230 C Class A (one component sealants). 822.03 CONSTRUCTION METHODS. All joints shall be cleaned of contaminants and impurities to the depth at which the sealant (and backer rod if detailed) is to be installed. Cleaning shall be by grinding, saw cutting, blast cleaning (sand or water), mechanical abrading or a combination of these methods. This will provide a sound, clean and frost-free surface for sealant application. All dust, loose particles and other debris shall be blown out with oil free compressed air. An expanded closed cell polyethylene foam rod back-up material shall be installed in joints, or an approved bond breaker tape shall be installed if so detailed on the Plans. A primer shall be applied to the surfaces of steel expansion joints. The primer shall be as per the recommendation of the sealant manufacturer. Silicone highway joint sealant shall be applied in a continuous operation to properly fill and seal the joint width. It shall be applied not thicker than ½-inch and no thinner than 1/4-inch with an approximate width to depth ratio of 2-to-1. For maximum performance, the sealant should be applied above 40 OF. The sealant shall be pumped directly from the original drum or pail in to the joint by use of an air powered pump, pushing the sealant ahead to form a uniform bead. The sealant shall fill the joint from the bottom to slightly 8−120 below the pavement surface. The joint shall be tooled using a blunt instrument, so that it is slightly concave and approximately 1/4-inch below the adjacent surface. Tooling should be done within 10 minutes of application before a "skin" forms. No soap or oil shall be used as a tooling aid. Traffic shall be kept off the sealed lane for at least 30 minutes after sealant application.
822.03.1 Limitations. Silicone sealant is not intended for continuous water immersion, and it
should not be applied in totally confined spaces where the sealant is not exposed to atmospheric moisture. The sealant should never be applied to wet or damp surfaces nor should it be installed during inclement weather. 822.04 METHOD OF MEASUREMENT. "Silicone Highway Joint Sealant" will be measured by the number of linear feet of each type of joint actually installed in accordance with the Plans and/or as directed by the Engineer. 822.05 BASIS OF PAYMENT. The accepted quantities of "Silicone Highway Joint Sealant" of the various types will be paid at their respective contract unit prices per linear foot as listed in the Proposal. The prices so-stated constitute full and complete compensation for all silicone sealant, backer rods, bond breaker tape, primer, surface preparation, other materials, labor, tools, equipment, and all incidentals required to finish the work, complete and accepted by the Engineer. SECTION 823 ROADWAY JOINTS - EXPANSION AND FIXED
823.01 DESCRIPTION. This work consists of the provision of various types of roadway joints, both
expansion and fixed, between bridge decks and abutment s or between sections of bridge decks at intermediate piers. Deck joints specified in this provision include co mpression type neoprene joints, strip seal joints, and asphaltic bridge deck joints. Other types of roadway joints, if required, will be specified in the Special Provisions. Deck joints shall be fabricated and installed in accordance with the details indicated on the Plans, or as directed by the Engineer, all in accordance with these Specifications. 823.01.1 Compression Type Neoprene Deck Joints. This type of joint consists of structural steel components anchored to the deck slab or abutment with preformed neoprene sealer placed between these structural elements. The neoprene seal er is approximately 1¼-inches wide for fixed joints and approximately 3 inches wide for expansion joints. 823.01.2 Strip Seal Expansion Joints. This type of joint consists of specially designed rolled steel sections that are anchored to the deck slab or abutment. The steel section contains a groove into which is inserted a pre-moulded neoprene strip seal. This deck joint system is a commercial product and must be installed in strict accordance with the manufacturer's recommendations.