Marshall Tester

MULTISPEED digital automatic universal tester for displacement controlled tests

Standard : EN 12697-34 | ASTM D1883 | ASTM D1559 | ASTM D5581 | AASHTO T245 | EN 12697-12 | EN 12697-23 | ASTM D4123 | NF P98-251-1/4 | BS 598:107 | BS 1377:4 | NF P94-078 | AASHTO T193 | EN 13286-47 | ASTM D6927 | DIN 1996 | UNI CNR 10009 | CNR 30 | CNR 34

Brand : Controls – Italy

General Descriptions :

The new MULTISPEED compression tester is the ideal solution for Road testing laboratory. The 50 kN capacity and the fully variable test speed of 0.2 to 51 mm/min make it possible to perform not only the CBR and Marshall tests, but many other applications as for instance Indirect Tensile test,  Quick Triaxial tests,  Unconfined and Uniaxial soil testing and, in general, all test to be performed under  displacement control. The machine can be equipped with analogical or digital load/displacement measurement systems as well as with the specific accessories, to suit either the field or central laboratory requirement.

Features : 

The firmware provide the digital speed control and a number of important test functions as follows:

• Closed loop speed control
• CBR and MARSHALL test speed can be selected by default.
• Other testing speeds (Custom) between 0.2 and 51 mm/min, can be easily set.
• Selection of maximum platen displacement. 
• The automatic stop of the machine avoids machine and specimen overloading, thus assuring operator safety.
• Rapid approach function, to reduce the testing time.
• Rapid platen return to speed up the platen base return at the end of the test.
• Speed calibration function by firmware. The test speed is originally factory calibrated using a polynomial interpolation. A test point is provided to verify  the speed with a standard tachometer.
• Emergency stop button as required  by the CE prescriptions.