1509 - MEMBRANE SEALANT 1500 - 15
1509.1 Description
This specification covers the membrane sealant used in expansions joints as designated in the Contract Documents.
1509.2 Requirements
a. Foam Sealant. Provide a foam sealant consisting of an open-cell high density polyurethane foam impregnated with either a polymer modified bitumen or a neoprene rubber suspended in chlorinated hydrocarbons. Precompress the foam sealant prior to packaging. Use a precompressed dimension as recommended by the sealant manufacturer to provide a water tight seal throughout a joint movement range of ±25% (minimum) from the specified joint opening dimension. Do not allow the precompressed dimension to exceed 75% of the joint opening width. Provide a foam sealant that is slowly self expandin g to permit workers ample time to install the foam before the foam exceeds the joint opening width. Supply the foam in pieces 5 feet in length or longer. Miter the ends of each piece for ease of joining to the adjacent pieces. Provide the foam sealant in 3 inch deep pieces (minimum). Provide foam sealant that is ultra-violet and ozone resistant. Provide the foam sealant that meets the requirements shown in TABLE 1509-1: TABLE 1509-1 FOAM SEALANT Property Test Method Requirements Tensile Strength ASTM D3574 21 PSI min. Elongation, Ultimate ASTM D3574 125% ± 20%. Density, Uncompressed 9 lb./cu. ft. min. Compressed Density at Joint Width 45 lb./cu.ft. min. Compression Set ASTM D3574 3% max. Softening Point ASTM D816 140o F. min. Low Temperature Flexibility (32oF to -10o F) ASTM C711 No Cracking or Splitting b. Bonding Adhesive. Provide a waterproof epoxy adhesive th at is compatible with concrete and recommended by the manufacturer of the foam sealant. c. Splice Adhesive. Provide any polyurethane adhesive recommended by the manufacturer of the foam sealant.
1509.3 Test Methods
Test in accordance with the requirements stated in subsection 1509.2.
1509.4 Prequalification
None required.
1509.5 Basis of Acceptance
Receipt and approval of a Type D certification as specified in DIVISION 2600. Visual inspection at destination for condition and compliance with dimensional and other requirements.
Get an email when 1509 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.