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(1) the device used to stress the tendons for prestressed concrete; (2) the device for raising a vertical slipform.
in prestressed concrete, the temporary force exerted by the device that introduces tension into the tendons.
the maximum stress occurring in a prestressed tendon during stressing.
a machine having two inclined jaws, one or both being actuated by a reciprocating motion so that the charge is repeatedly nipped between the jaws.
a grate tamper for pushing coarse aggregate slightly below the surface of aslab to facilitate finishing. (See also tamper.)
(1) a physical separation in a concrete system, whether precast or cast- in-place, including cracks if intentionally made to occur at specified locations; (2) the region where structural members intersect.
compressible material used to fill a joint to prevent the infiltration ofdebris and provide support for sealants applied to the joint.
compressible material used to exclude water and solid foreign materials from joints.
a spall adjacent to a joint.
an impervious material used to fill joints in pavements or structures.
a connection where the bending stiffness differs from that of the members and requires special design to collect, transfer, and redistribute forces from one member to another through the connection.
a metal tool used to cut a joint in fresh concrete.
the process of producing joints in a concrete slab.
a comparatively narrow beam used in closely spaced arrangements tosupport floor or roof slabs.
