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DETERMINATION OF THE SECANT COMPRESSION ELASTIC MODULUS TEST ON CONCRETE AND MORTAR SPECIMENS

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C134
ELECTRONIC UNIVERSAL EXTENSOMETER/COMPRESSOMETER
STANDARDS: EN 12390-14, EN 13412, EN 13286-43 | ASTM C469 | ISO 6784 | BS 1881:121 | DIN 1048 | UNI 6556
Made of two anodized aluminium pieces, one fixed and the other sliding and housing a displacement transducer that measures with
high accuracy the movement of two conical points made of hardened steel and attached at the two ends of the electronic sensor.
An aluminium template (optional mod C134-10) is used to regulate and to calibrate the base length.
The two conical points are coupled to the surface of the sample
with a rapid and simple attachment system by means of two adjustable
elastic straps.
The instrument is equipped with a mechanical knob to lock and
unlock the displacement transducer, allowing to safeguard the
selected base length while attaching of the device to the sample.
Normally the test is performed on cylinders by using 3 extensometers/
compressometers, and on cubes or beams by using 2 or 4
instruments.
The extensometer is suitable to test cubes, cylinders and beam
specimens, having minimum height of 130 mm
It is also possible to test mortar prisms 40x40x160 mm
by using a block for reducing length.
Gauge length adjustable from 50 to 160 mm
Feeding up to 10 V
Travel: ± 1.5 mm
Sensitivity less than 0.01 micron
Supplied complete with reducing block for mortar
prisms, elastic straps, carrying case.
Weight: 1000 g approx.

ACCESSORIES
C134-10 TEMPLATE, anodized aluminium made, used to regulate
and calibrate the base length.
S337-51 CALIBRATION PROCESS for one Extensometer/Compressometer
combined with digital unit.
Note:
The Compressometers and the Compressometer/Extensometer connected
to electronic linear transducers (accessory mod. S336-11)
can be used with:
– Matest Servo-Plus Evolution
compression machines equipped
with Automatic Elastic Modulus
system (mod. C125N) in complete
accordance with EN, ASTM, ISO,
DIN, BS, UNI Specifications
(see p. 284)
– Matest Cyber-Plus and Servo-Plus
compression machines. The electric
cable of the displacement transducer
is “directly” connected to one of
the eight channels available on the
digital unit.
Through the suitable Software
(accessory mod. C130-05), the digital
unit will automatically elaborate the data,
supplying the load/deformation
graph with certificate printing.
C130-05
FIRMWARE for Elastic Modulus test on Concrete, Mortar, Rock
specimens and tests according to API 19C and ISO 13503-2
Automatic data and processing acquisition, load/deformation graph
and certificate printing with direct management of the testing
machine. The software can be installed only on Cyber and Servo-
Plus Evolution systems.
Note:
The Elastic Modulus test, to fully comply EN, ASTM, ISO, DIN,
UNI, BS Standards, must be carried out with a Servo-Plus Matest
machine equipped with C125N automatic system with pace rate
load and “unload” control.

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