Test Standard Category

B282-10 Multi station thermal asphalt system - TSRST

( Asphalt )

  • AASHTO TP10-1993
  • EN 12697-46:2012


The Thermal Stress Restrained Specimen Test (TSRST) is used to determine the low temperature cracking susceptibility of asphalt concrete. In the early 1990s the TSRST was developed by Oregon State University (OSU) as part of the Strategic Highway Research Program. The test method became AASHTO TP10.

Main Features

  • Up to three working stations (electromechanical and/or servo-hydraulic stations).
  • Servo-hydraulic actuator: 30 kN static, 25 kN dynamic, double acting, fatigue rated and equal area type with long life Labyrinth bearings & seals.
  • DynafloTM Hydraulic Power Supply: Variable Frequency Drive 2.2 kW pump motor; Silent operation.
  • Ability to clone, modify and/or generate user’s own method file(s) to suit their specific requirements.
  • Programmable test Wizard to guide the operator step by step based on a recipe book approach.
  • Temperature controller programmed via PC software.
The basic MULTI TSRST includes the main frame, the CDAS, the climatic chamber, the refrigeration unit and at least one between the electro-mechanical or servo-hydraulic station. Here below the available configurations:
  • B282-10: 1 electromechanical station
  • B282-11: 2  electromechanical station
  • B282-12: 3  electromechanical station
  • B282-13: 1 servo-hydraulic station
  • B282-14: 1 electromechanical station / 1 servo-hydraulic station
  • B282-15: 2 electromechanical station / 1  servo-hydraulic station

NOTE: Multiple stations configuration (B282-11, B282-12, B282-14, B282-15) allow to run tsrst tests with all stations simultaneously.
In this configurations, utst, rt, tct, utsst and utcst tests are performed on one station at a time. With combined configuration (electromechanical and servo-hydraulic) utcst must be performed with servo-hydraulic station.

Request information

External dimensions load frame (including environmental chamber): 1853(h) x 1020(d) x 1230(w) mm
Hydraulic Power Supply (for Servo-hydraulic station(s): 700(h) x 520(d) x 570(w) mm
Weight load frame: 200 kg approx. without the selected stations configuration
Electrical requirement for:
Servo-hydraulic station (each): 230V 50-60Hz 1ph 2.2kW
Electro-mechanical station (each): 100-230V 50-60Hz 1ph 0.75kW
Refigeration unit: 380-420V 50Hz 3ph 2.5kW

Loading frame(s)
Rigid two column frame
Width of work space: 240 mm
Height of work space (between the two platens): 285 mm
Electro-mechanical actuator(s)
25kN static with ± 50 mm stroke (100 mm)
Internal displacement transducer
Servo-hydraulic actuator
30kN static, 25kN dynamic, double acting, fatigue rated, servo hydraulic actuator, equal area type with long life seals & bearings
± 50 mm stroke (100 mm)
Internal displacement transducer
Close coupling of servo valve to actuator for best servo performance
10 μm pressure line filter at actuator for ultimate contamination control
0.5 lt hydraulic accumulator with 40 Bar pre-charge for best pressure line regulation at servo-valve.
High response, VCD direct drive, servo-valve: -3 db @ 350 Hz, ± 5% amplitude (performance curves available on request)
Load cell(s)
Low profile Precision Transducers load cell, ± 30kN, 0.1%. Normalized output with in-line signal conditioning
Hydraulic power supply
Working pressure of up to 160 Bar (low pressure adjustable)
High/Low pressure selectable from control pendant
Variable flow rate up to 7.5 liter/min
Variable Frequency Drive (VFD) 2.2kW pump motor; speed based on demand
3 μm return line filtration
Low oil, over temperature and dirty filter displayed
Remote starting
Pressure gauge
Air cooling (Electric fan)