870 consolida ted satisfactorily by spading or vibrating. Indications of initial set in the concrete to such an extent as to adversely affect the workability of the concrete during placement shall be cause for rejection. The concrete shall be in accordance with one of the following:
i.Concrete produced for other construction items under an approved mix design. ii. Concrete produced from premixed ingredients sold commercially in acceptable sacks, such as "Sacrete", or "Quickrete", "Handicrete ” or approved equal. Pre mixed commercial preparations shall be mixed in accordance with the manufacturer's instructions. iii. Concrete produced from separate components proportioned by volume in the ratio of one part Portland cement to two parts sand to three parts coarse aggre gate. Sand and coarse aggregate shall be visually inspected for deleterious substances, and such matter shall be removed prior to mixing.
715.13 Preformed Fabric Pads :
Material shall conform to the requirements of the AASHTO Standard Specifications for Highway Bridges, Division II, Section 18.4.10.1. A certified copy of test reports showing compliance with the above requirements shall be furnished the Division's Shop Inspector, or to other representatives of the Division as may be designated, for each shipment.
715.14 Elastomeric Bearing Pads :
Bearing pads shall meet the requirements of the AASHTO Standard Specifications for Highway Bridges, except for sampling frequency.
715.14.1 Sampling Frequency for Elastomeric Bearing Pads: The sampling rate shall
be one bearing pad per lot, per nominal dimensional size. (A chang e in nominal dimensional size is any change in the designed length, width or height of the bearing pad.)
715.14.2 Approval for Bearing Pads Without Shims: Beginning January 1, 2024
bearing pads that do not include shims or internal stiffeners will only be accepted using NTPEP test results and a certificate of compliance from NTPEP. Prior to January 1, 2024 the WVDOH will accept NTPEP test results and a c ertificate of compliance from NTPEP for approval of bearing pads without shims or internal stiffeners, or a company without NTPEP test results and a certificate of compliance from NTPEP can still submit bearing pads for acceptance testing using 715.14 and 715.14.1 until December 31, 2023.
715.15 Elastomeric Bearing Pads for Bridge Railing Posts :
Elastomeric bearing pads for bridge railing posts shall have a thickness of 1/8 inch unless modified by the project plans. The pads shall have a minimum tensile strength of 1,000 psi (7 M pa) when tested in accordance with ASTM D412. The pads shall have a durometer hardness of 55 to 75 when tested in accordance with D2240.
Source: West Virginia Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 892–892 of 1,006.