C125M Elastic modulus on concrete

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Determination of the secant compression ELASTIC MODULUS on concrete
System: Automatic with pace rate control also when releasing the load.

It can be used with a MATEST high stability frame of 2000 or 3000 or 5000 kN capacity coupled with the automatic servo-controlled system Servo-Plus Progress (mod. C104N).

The appliance includes:

• Hydraulic system
  It is an hydraulic installation and has a high performance valve directly controlled by the digital unit that grants the automatic control of the pace rate increasing the load, keeps a certain load and than controls the pace rate decreasing the load.
  The setting of the pace rate is made by a very sensitive valve controlled by a stepper motor allowing a micrometric action on the pace rate granting excellent results.
  A laser position detector allows a rapid positioning of the piston. This grants a touching sensitivity of test starting at about 0.1 per thousand of the maximum capacity.
• Electronic measuring system
  The high performance control and data processing unit controlled by a 32 bit microprocessor, can manage up to 8 high resolution channels for the control of load cells or transducers with strain gages bridge.
  The unit contains two Analogical/Digital last generation converters with 24 bits resolution. The system processes the signals coming from the load cells and from the extensometers giving all the results required for  further processing following the most updated International Standards for this application.
• Data acquisition and processing UTM2 software 
  License for Elastic Modulus on Concrete.
  The software has been developed on the working line of the already known software UTM-2 (Windows menu). It contains the profiles of the main Standards used, but the user can modify as he likes and customize the test profile that will be carried out in a completely automatic way by the testing machine.
  The software gives the possibility to print on a standard printer a test certificate reporting all the data concerning the test and the specimen and the graph of the test. The software includes the license mod. C123N, while the extensometers (two models are proposed: A and B) are not included in the standard supply and must be ordered separately.
  The user can introduce a list of data concerning the specimen that will be tested and the kind of test that he wants to make: shape of the specimen (cylinder-cube-block), dimensions, age of the specimen, average expected breaking value, etc…

The appliance allows verifying the proper reading of the extensometers and, if everything is within the expected tolerances, it manages the average deformation value read by the transducers and processed by the digital unit, than it transmits by means of the communication port RJ (Network Connection) to a Personal Computer, that can be already by the end user or supplied separately all the data of the test. These data will be processed by the software and transformed in a graph load/deformation and load/time, following the International Standards.

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