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Four Point Bend Test for UTM
Description & Specification
Four Point Bend Test for UTM
Categories:
Asphalt Mix Testing
Technical Specifications
To perform Four Point Bend test
Main Features:
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
Innovative “floating straight-edge” on specimen transducer displacement measurement eliminates errors
Optional fixed point strain measurement referring from outer pivots
Loading frequency up to 60 Hz
Cost effective solution for high volume testing
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
Specimen laterally positioned by hand using etched lines as visual guide for two specimen sizes, nominally 50 and 63.5 mm in width
Non-linear regression data fitting ensures reliable determination of phase and modulus
Can be used with existing UTM systems
Extra Large Four Point Bend Jig
Innovative floating on-specimen transducer eliminates errors caused by frame compliance
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
Backlash free rotation and translation on all load and reaction points
Controlled force and motorized specimen clamping
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.
Technical Specifications:
Load capacity: up to 10 kN dynamic
Loading frequency: up to 60 Hz
Specimen size (h x w x l): 70 (max) x 80 (max) x 380 mm
Dimensions (h x w x d): 455 x 460 x 230 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)
Weight: 35 kg
Extra Large Four Point Bend Jig
Load capacity: up to 25 kN dynamic
Specimen size (l x h x w): 790 (min) x 100-160 x up to 200 mm
Dimensions (h x d x w): 790 x 435 x 890 mm
Weight: 210 kg
Air supply: clean, dry air at 700 kPa.
Yoke alignment tool for specimens: 740 mm (outer span centers), 247 mm (inner span centers).
