This specification covers bituminous preformed expansion joint filler for use in concrete construction. This product shall consist of a bituminous (asphalt or tar) mastic composition, formed and encased between two layers of bituminous impregnated felt or two layers of glass-fiber felt. The mastic shall comprise mineral fillers and reinforcing fibers and may contain thin strips of reinforcing sheet material. Different test methods shall be performed in order to determine the following properties: distortion at 52°C, brittleness, water absorption, and compression.

1.1 This specification covers bituminous preformed expansion joint filler for use in concrete construction.

Note 1—Attention is called to ASTM Specifications D1751 and D1752.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.