ELASTIC MODULUS ON CEMENT, AUTOMATIC
Determination of MODULUS OF ELASTICITY in compression of products and systems for the protection and repair of concrete structures (mortars).
System: Automatic with pace rate control also when releasing the load
It can be used with a MATEST testing machine to be selected among the Servo-Plus Evolution models (ref. 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 step by step motor and it allows 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 of 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 a further processing following the most updated International Standards for this application.
• Data acquisition and processing software UTM2. License for Elastic Modulus to EN 13412.
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 personalise the test profile, that will be effected 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 dates concerning the test and the specimen and the graph of the test. The Software includes the license “Servonet” mod. C123N while the extensometers (two models are proposed: A and B) are not included in the standard supply, and must be ordered separately (see accessories).
The user can introduce a list of dates concerning the specimen that will be tested and the kind of test that he wants to make: shape of the specimen, 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 serial communication port RJ (Network Connection) to a Personal Computer, that can be already by the end user or supplied separately (not included with the Software), all the dates of the test. These dates will be processed by the software and transformed in a graph load/deformation and load/time, following the International Standards.
NOTE:
The Elastic Modulus on Mortars mod. E190N can be used together with:
A) EXTENSOMETERS (STRAIN GAGES), SINGLE USE, ELECTRIC, available in different sizes, mod. C125-10 to C125-13 (see accessories),
or:
B) EXTENSOMETERS /COMPRESSOMETERS, electronic, universal, mechanical frame, mod. C134 (see accessories)
ACCESSORIES:
A) EXTENSOMETERS (STRAIN GAGES), SINGLE USE, ELECRIC. Pack of 10 pieces
Available models
C125-10 Electric extensometer, base length 10 mm
C125-11 Electric extensometer, base length 20 mm
C125-12 Electric extensometer, base length 30 mm
C125-13 Electric extensometer, base length 60 mm
C125-15 KIT for the application of single use extensometers composed by: glue, welder, solder, cleaning liquid, accessories, the whole in carrying case
C125-09 INTERFACE MODULE, “needed accessory” to connect up to 4 electric single use extensometers . This module allows also the automatic calibration of the zero and of the measuring range after a special thermal compensation. This grants a five times better accuracy than the one requested by the Standards.
AS ALTERNATIVE:
B) C134 EXTENSOMETER / COMPRESSOMETER, ELECTRONIC, UNIVERSAL, MECHANICAL FRAME. It can be used only with samples having minimum height of
130 mm.
C134-10 TEMPLATE, to regulate and calibrate the base length of the C134
extensometer.
