SECTION 822 ELASTOMERIC BEARING PADS
822.01 ELASTOMERIC BEARING PADS. Furnish elastomeric bearing pads
conforming to the design and dimensions as specified in the Plans and to the AASHTO LRFD Bridge Construction Specifications, Section 18. Use bearings that are low temperature Grade 3 with durometer hardness of 50 and that conform to the load test requirements corresponding to Design Method A. 822-1 SECTION 823 CONCRETE CURING MATERIALS
823.01 GENERAL. This section lists the various types of curing materials allowed for
concrete and the materials requirements applicable to each. The Department will provide specifications governing the particular type or types of curing materials allowed for specific classes of construction in the Contract or other sections of these specifications.
823.02 LIQUID MEMBRANE FORMING COMPOUNDS. Products must have
completed testing through the National Transportation Product Evaluation Program (NTPEP) for Concrete Curing Compounds in or der to remain on or to be placed on the Department’s List of Approved Materials. Ensure that all curing compounds Conform to ASTM C309 and are from a Department approved manufacturer.
1.Type 1-D (Clear with fugitive dye or transl ucent with fugitive dye), Class A or Class B.
2.Type 2 (White pigmented), Class A or Class B. Supply Type 2 curing compounds in agitating type drums, except the Department will not require agitating type containers when Type 2 curing compound is supplied in 5 gallon pails. The Department will accept curing compounds on the basis of certification of their conformance to this section and their being from an approved manufacturer. The Department will reject curing compounds from an unapproved manufacturer and require their removal from the project site.
823.02.01 Acceptance Procedures for Non-Specification Curing Compounds. The
Department may test project samples. When non-specification curing compounds are inadvertently incorporated into the work the Department will accept the material with a reduction in pay. The Department will apply the largest payment reduction when the material fails to meet more than one specification requirement. The Department will calculate the payment reduction on the invoice cost of the material delivered at the project site. MOISTURE LOSS PAYMENT REDUCTION kg/square meter 0.00-0.55 0. 56-0.65 0.66-0.75 0.76 or more Reduction Rate 0% 20% 30% 50% REFLECTANCE PAYMENT REDUCTION % Reflectance 60.0% or more 50-59. 9% 40.0-49.9% 39.9% or less Reduction Rate 0% 20% 30% 50%
823.03 BURLAP CLOTH. Conform to AASHTO M 182, Class 4.
823.04 CURING PAPER (Regular or White). Conform to ASTM C171.
823.05 WHITE POLYETHYLENE FILM (White Opaque). Use white polyethylene
film of either single sheet construction conforming to ASTM C171 or laminated construction consisting of 2 sheets of white polyethylene reinforced with synthetic fiber cords, providing the total thickness of polyethyl ene, exclusive of the cords, averages no less than 4 mils and the sheeting conforms to all other applicable requirements of ASTM C171. 823-1
Source: Kentucky Standard Specifications for Road and Bridge Construction, 2019 Edition. Pages 612–612 of 718.