1511 - BRIDGE JOINT SYSTEM - PREFORMED PRESSURIZED ELASTOMERIC NEOPRENE 1500 - 18
1511.1 Description
This specification covers material for a bridge expansion joint system using a preformed, pressurized elastomeric neoprene seal as shown in the Contract Documents.
1511.2 Requirements
a. Provide a polychloroprene (neoprene) elastomer profile that is preformed by extrusion and vulcanized into its definitive shape, and is supplied in several configurations and dimensions, ranging from 1/4 to 4 inches. See the Contract Documents for profile size requirements. The profile must comply with AASHTO M 297, except it must be capable of being pressurized during installation. b. Use a double-component, epoxy-based adhesive mixed at the job-site. Apply it to thoroughly cleaned expansion gap walls and outside rough walls of the profile. Provide an epoxy-based adhesive that complies with TABLE 1511-1. TABLE 1511-1: DOUBLE COMPONENT THIXOTROPIC PASTE Property Requirement Tensile Strength 4140 PSI Axial Compression 8760 PSI Solids Hardness 5 MOHS Pot Life 40 Minutes at 68ºF Flash Point > 200ºF Curing Time/Strong Bond Within 24 Hours Complete Cure 7 Days at 68ºF (At higher ambient temperatures, the cure will be accelerated.) c. Pressurization is done through a valve with a cap system. The profile is pressurized only during installation and curing time of the adhesive, to verify complete bonding throughout the gap/profile surfaces. Air pressure will bleed itself with time or the air valve can be broken loose any time after 24 hours of installation.
1511.3 Test Methods
Test the material in accordance with AASHTO M 297.
1511.4 Prequalification
None required.
1511.5 Basis of Acceptance
Receipt and approval of a Type D Certification as specified in DIVISION 2600.
Get an email when 1511 changes
Kansas revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.