Marshall Stability Test Machine

The Automatic Marshall Stability Test Machine is used to determine the maximum load and flow values of bituminous mixtures. Capacity is 50 kN. The machine comprises compact two column frame with adjustable upper cross beam. Platen speed is 50.8 mm/min.

The Automatic Marshall Stability Test Machine is supplied complete with;
• Load Cell, 50 kN
• Linear Potentiometric Displacement Transducer with Bracket, 25 x 0.001 mm
• Data acquisition and processing: by TCM200 readout unit featuring
• PC Software
• Connection Cable
• Breaking Head, 4"



For safety, the up and down travel of the lower platen is limited the use of limit switches. Rapid adjustment of the platen is controlled using the up and down buttons on the front panel of the machine.
The measuring system consists of a 50 kN capacity strain gauge load cell fitted to the upper cross beam to read stability values and the 25x0.001 mm linear potentiometric displacement transducer fitted to the breaking head.



The machine is supplied complete with marshall breaking head.



Data acquisition and processing: by TCM200 readout unit featuring;
• Color TFT touch display supports 16M colors and supports 800x480 pixel screen resolution
• 3 pcs universal analog input sockets (ADC)
• Each analog input with 18 bit precision (1/256000)
• 1 replacement analog input
• Total of 4 analog high-precision measuring capacities
• 2 analog output sockets (DAC)
• PULSE / DIR outputs (PULSE / DIR / ENA) to control the servo and stepper motor drives.
• Digital outputs for general purpose (can pull relays and control different electrical units)
• Digital inputs for general purpose (receives and evaluates input signals like limit contacts from the environment)
• Potentiometer input (reference signal input for calibration and remote control)
• USB communication signal output (communicates with computers)
• Connects to local networks and the Internet with Ethernet 10/100 network connection output (optional)
• Connects to portable devices via Bluetooth wireless connection (optional)
• 500 test results can be stored in internal memory
• Due to the SD (memory) card connection, a large number of test results can be stored in the device memory (40,000 test results).
• In addition, the results can be taken from the device memory and transferred to the computer as an Excel table. (Optional)
• Resistive touch screen allows easy operation of device functions by touching the screen
• Sensor modules are compatible with loadcell (load cell), pressure sensor (4-20 / 0-20 mA), potentiometric distance sensors, strain washers, thermocouples and all kinds of mV output sensors.
• Provides precise calibration with multi-point calibration (up to 10 points)
• Setting and calibration menus are password protected and prevent unauthorized use
• Allows testing with a computer, tablet, smartphone or on the touch screen panel.
• There are many test sample information screens and test methods in the device memory and tests can be performed easily
• Different menu languages can be selected via the device via language support (Turkish, English, French, Spanish and Russian)
• Speed control algorithm is closed loop PID control and all parameters can be adjusted on user side.
• The device can switch between one-touch load and deformation control modesCihaz farklı makinelere kolayca adapte edilebilir ve en uygun kontrol sağlanır
• The graphical field that visualizes the test results on the screen has the ability to change the scale automatically and automatically adjusts the optimal scale as the values change
• Firmware updates can be made via USB input. In addition, via the computer allows remote or internet update.



LCD Graphic Display Data Acquisition and Control Unit
TCM200 Touch Control Unit is designed to perform automatically, determine the maximum load and flow values of bituminous mixtures of asphalt materials such as by controlling the Testmak automatic marshall stability test machines.
All the operations of TCM200 Touch are controlled from the front panel touch screen display.



TCM200 Touch Control Unit has easy to use menu options. It displays all menu option listings simultaneously, allowing the operator to access the required option in a seemless manner to activate the option or enter a numeric value to set the test parameters. Digital graphic display is able to draw real-time "Load and Time", or "Flow and Time" graphics. Can do calibration easily from 10 points. Manual Control is available.



The LCD Graphic Display is able to draw real-time "Load and Time", or "Flow and Time" graphics. Can save 500 test results in its internal memory. At the end of the test cycle, the results can be stored in the large memory or downloaded to a PC in TCM200 software format. Dedicated software package is available for further online data processing data base management and certificate printing.

Data Acquisition & PC Software
Marshall Test Software is developed for both EN 12697-34 and ASTM D5581 Marshall Tests. Marshall Test Software includes control of machine, acquisition of load and displacement data, saving them and reports. The Marshall Test Software accepts specimen diameter and height as an input parameter. It automatically calculates correction factor coming from the standarts respect to specimen size. The stability value is calculated regarding to this factor.



The software continously updates load and displacement until the end of test. When the test is completed, the sharpest slope of the graph is calculated. The point that this line crosses displacement axis is commented as an offset. This offset is subtracted from the displacement value at peak point and called as flow. Graphical outputs and reports can be saved as a MS Excel worksheet