prestressing
Tensioning before loading
Prestressing is a construction technique where internal stresses are deliberately introduced into concrete or other materials before they bear loads.
Steel cables or rods are tensioned and embedded in concrete; when released, their compression strengthens the material against cracking under weight.
Prestressed concrete appears in bridges, parking structures, and floor slabs: The prestressing allowed for longer spans without support columns.
Tensioning reinforcement after concrete sets
- pre-tensioningApplying initial stress beforehand
- tendonsFibrous connective cords
- strandsTwisted filaments or elements
- cablesHeavy ropes or wires
anchorages · ducts · jacks · grouting · bonded · unbonded · harped · parabolic
Solid building mixture
- steelCarbon-hardened iron alloy
- strandThin fiber piece
- wireThin metallic conductor
- barDrinking establishment
high-strength · galvanized · grout · sheathing · HDPE · corrugated · duct-tape · admixtures
Stretched or strained state
- compressionForcing into smaller space
- strainExcessive stretching force
- loadCarried weight or burden
- forceStrength or compulsion
camber · deflection · losses · creep · shrinkage · relaxation · friction · wobble
post-tensioning
Tensioning reinforcement after concrete sets
- pre-tensioningApplying initial stress beforehand
- tendonsFibrous connective cords
- strandsTwisted filaments or elements
cables · anchorages · ducts · jacks · grouting · bonded · unbonded · harped · parabolic · profile
concrete
Solid building mixture
bar · high-strength · galvanized · grout · sheathing · HDPE · corrugated · duct-tape · admixtures
tension
Stretched or strained state
- compressionForcing into smaller space
- strainExcessive stretching force
- loadCarried weight or burden
force · camber · deflection · losses · creep · shrinkage · relaxation · friction · wobble · moment
girder
Main structural support beam
viaduct · segmental · cantilever · span · truss · sleepers · tanks · silos · containment · pavements