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Asphalt/bituminous mixture

Four Point Bend Test for UTM, AST Pro and AsphaltQube

AASHTO T321 | EN 12697-26 Annex D | ASTM D7460 | AG:PT/T233 | AG:PT/T274 | AS 03:2000 | EN 12697-24 C
Main features
  • Innovative “floating straight-edge” on specimen transducer displacement measurement eliminates errors
  • Optional fixed point strain measurement referring from outer pivots
  • Designed to subject an asphalt specimen to four point bending with backlash free rotation and horizontal translation of all load and reaction points
  • Sinusoidal or haversine controlled strain or controlled stress loading
  • Controlled force, motorized specimen clamping
  • Loading frequency up to 60 Hz
  • Non-linear regression data fitting ensures reliable determination of phase and modulus
  • Can be used with existing UTM systems
  • Cost effective solution for high volume testing
  • Specimen laterally positioned by hand using etched lines as visual guide for two specimen sizes, nominally 50 and 63.5 mm in width
  • Vertical clamping of the specimen is achieved by servo-motor driven ball screws, which are operated continuously during the test to take up the compliance of the specimen at the clamping surfaces
Extra Large Four Point Bend Jig
  • Innovative floating on-specimen transducer eliminates errors caused by frame compliance
  • Backlash free rotation and translation on all load and reaction points
  • Controlled force and motorized specimen clamping
  • Specimen rollers with pneumatic lift and lowering for easy loading of specimen
  • Automated self-aligning specimen yokes for easy specimen insertion
  • Specimen roller with pneumatic lift and lowering provide the user with easy test set-up across a range of extra-large specimen sizes
  • Vertical clamping of the specimen is achieved by servo-motor driven ball screws, which are operated continuously during the test to take up the compliance of the specimen at the clamping surfaces
General description
General description
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Technical specifications

  • Loading frequency: up to 60 Hz (load limitations apply at higher frequencies)
  • Load capacity: up to 10 kN dynamic
  • Specimen size (h x w x l): 70 (max) x 80 (max) x 380 mm
  • Yoke alignment tool for specimen: 50 x 50 x 355.5 mm (h x w x outer span centers), 70 x 70 x 420 mm (h x w x outer span centers)
  • Dimensions (h x w x d): 455 x 460 x 230 mm
  • Weight: 35 kg
Extra Large Four Point Bend Jig
  • Dimensions (h x d x w): 790 x 435 x 890 mm
  • Weight: 210 kg
  • Load capacity: up to 25 kN dynamic
  • Specimen size (l x h x w): 790 (min) x 100-160 x up to 200 mm
  • Yoke alignment tool for specimens: 740 mm (outer span centers), 247 mm (inner span centers)
  • Air supply: clean, dry air at 700 kPa (specimen loading only)

Ordering info

 79-PV70400
Four Point Bend Jig to AASHTO T321, ASTM D7460, AG:PT/T233, AT:PT/T274, AS 03:2000, EN 12697-24C, EN 12697-26D for UTM-30

79-PV70402
Four Point Bend Jig to AASHTO T321, ASTM D7460, AG:PT/T233, AT:PT/T274, AS 03:2000, EN 12697-24C, EN 12697-26D for UTM-16P

79-PV72101
Four Point Bend Jig to AASHTO T321, ASTM D7460, AG:PT/T233, AT:PT/T274, AS 03:2000, EN 12697-24C, EN 12697-26D for AST Pro and AsphaltQube

79-PB70420
Extra Large Four Point Bend Jig to EN 12697-24C and 12697-26D for UTM-130XL 

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