The load is applied by a mechanical jack that is driven by a stepper motor and controlled by an internal microprocessor on a high precision control board.
Stroke electric end switches are applied to the load piston to save the machine from accidental handlings.
The crosshead foresees couplings to fix the different test devices.
The stress is measured by an electric load cell and the displacement control is achieved directly by the high technology electronic board incorporated into the machine within a variable speed range up
to 51 mm/min to cover the Marshall test.
Real time display of time, load, deformation, displacement and graph simultaneously is allowed thanks to the latest generation control board.
The following asphalt - bitumen tests can be performed with the device:
Marshall Stability Test
Standards: EN 12697-34, ASTM D1559, D5581, D6927, AASHTO T245, BS 598 :107, NF P98-251-2
Test development with displacement control.
S205M Unitronic 50 kN
S337-34 Strain gauge load cell, 50 kN capacity
S337-51 Calibration process of load cell / Unitronic
S212-05 Loading piston
B046N Stability mould
B043-01N Software for Marshall test
Splitting Tensile Test
Standards: EN 12697-23,12, ASTM D6931, AASHTO T283, CNR 134
Test development with displacement control.
S205M Unitronic 50 kN
S337-34 Strain gauge load cell, 50 kN capacity
S337-51 Calibration process of load cell / Unitronic
S212-05 Loading piston
B047-02 Splitting tensile device for samples Ø 4” and 6”
B047-04 Set of TWO displacement transducers with accessories
B043-02N Software for Splitting Tensile test
Direct Shear (Leutner) Between Bituminous Strata
Standard: ALP A StB T4
Test development with displacement control.
S205M Unitronic 50 kN
S337-34 Strain gauge load cell 50 kN capacity
S337-51 Calibration process of load cell / Unitronic
S212-05 Loading piston
B047-10 LEUTNER testing head for specimens Ø 150 mm
B047-11 Spacers for Ø 100 mm specimens with Leutner head
B043-03N Software for Marshall and Leutner tests
Direct shear test (LEUTNER) on the connection between bituminous strata, carried out on asphalt cylinder specimens Ø 150 mm or 100 mm obtained from road cores or on laboratory made specimens.
Auto SCB Semi- Circular Bend Test
Standards: EN 12697-44, AASHTO TP124, ASTM D8044
Test development with displacement control.
EN 12697-44
B250-01 Basic indirect tensile (idt) jig, for 100-150 mm diameter
B254-01 Scb jig (requires basic idt jig)
B254-51 Pair of scb wear plates
S337-34 Load cell 50 kn capacityB045-13 Loading piston
S336-15 Transducer type "B" travel: 10 mm
B045-14 Coupling hardware
S335-15 Universal coupling pliers for transd./dial
B043-05N Software for auto-scb test
AASHTO TP124, ASTM D8044
B208 SCB frame
B254-02 Springs
B254-10 Roller support
S337-31(*) Load cell 2,5 kn capacity
B045-13 Loading piston
S336-15 Transducer type "b" travel: 10 mm
B045-14 Coupling hardware
S335-15 Universal coupling pliers for transd./dial
B043-05N Software for auto-scb test