The compression testing machines tested for high stability meet the stringent requirements of the: EN 12390-4 | BS 1881:115 | DIN 51220 | UNI 6686, part 3 | NF P18-411 | UNE 83304 | ASTM C39 | AASHTO T22

These four columns prestressed frames are manufactured with specific quality features (processing, tolerances), piston/cylinder group, spherical seat, compression platens, distance pieces etc., conforming and meeting the high stability verification (force distribution).

The conformity of the stability is certified with the verification of the self-alignment (foot-meter test) of the machines components and the restraint on movement of the upper spherical seat/platen, by using a special electric strain load column at 5 measuring points which is connected to its suitable datalogger.
The most important feature of the high stability frames is their uniform distribution of the applied load on all the specimen surface under test. The sample breakage is satisfactory and the strength results are correct, high and true. 

• 2000 kN Compression Machines
• 2000 kN Compression Machines, Block Platens
• 3000 kN Compression Machines
• 3000 kN Compression Machines, Block Platens
• 4000 kN Compression Machines
• Oversized 3000 kN/5000 kN Compression Machines

Four columns prestressed frame machines for production routine tests, designed to be in compliance with the ASTM standards.

The requirements respected are: ASTM C39 | BS 1610 | NF P18-411 | AASHTO T22

Their main features are:

• Compression platens are surface hardened over 55 HRC and rectified.
• Device to check piston’s excursion during test.
• The columns are prestressed to provide a very high rigidity.
• Piston having 50 mm stroke and cylinder are coupled with high quality packing set.
• The tank has an oil level and oil discharge.
• Dial speed selector to display, pre-select and control oil flow.
• Multipiston power pump assuring continuity of delivery.
• Fast approach ram device to avoid dead times.
• Ball seating is accurately machined.

All the machines are divided by their capability and their load measuring system.

• 1300 kN Compression Machines
• 1500 kN Compression Machines
• 2000 kN Compression Machines
• 2000 kN Compression Machines, Wide Platens
• 2000 kN Compression Machines, Block Platens
• 3000 kN Compression Machines
• 3000 kN Compression Machines -Block Platens
• 5000 kN Compression Machines

All motorized compression testing machines can be upgraded with an hydraulic two ways distribution valve in order to connect and alternatively control a second frame, like flexural or cement compression frame.

AUTOMATIC SYSTEM WITH GRADIENT CONTROL ALSO DOWN

It can be used with a IMPACT high stability frame 2000 or 3000 or 5000 kN capacity, coupled to the automatic servo-controlled system “Servo-Plus Evolution” (mod. C104N) housed in a separate pyramidal frame.

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.

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.

Data acquisition and processing UTMII software – License for elastic modulus on concrete
The software has been developed on the working line of the software UTMII (Windows menu). It contains the profiles of the main Standards used, but the user can modify as he likes and personalize the test profile that will be carried out in a completely automatic way by the testing machine.
The software allows to determine both the initial and stabilized secant modulus of elasticity as requested by EN 12390-13 Standard.

• C125-10

  Strain gauges
• C132N

  Compressometer for cubes
• C130N

  Compressometer for cylinders
• C125N

  Elastic modulus on concrete
• C134

  Electronic compressometer, extensometer

These frames are designed to give costumers suitable solutions for several different situations.

One of the most important difference between the available frames is the distance between columns and the maximum vertical daylight, both parameters which define the available space for lodging specimens of different dimensions in the machine. Another fundamental feature is the structure of the machine, which can be chosen depending on the needs in terms of machine stifness or practical reason.

Main features:

• Motorized or hand operated models
• Gauge load measuring system
• Digitec or Cyber-Plus Progress graphic display unit
• Autotec or Servo-Plus Progress servo-controlled automatic system
• Stand-alone frame, or combined to another frame
• Possibility of two-point loading or centre-point loading by simply removing one upper roller and placing the other in the centre
• Graduated scales to get easy rollers adjustment
• Rollers are hardened, case hardened and rectified

• Flexural Testing Machine 150 kN
• Flexural Testing Machine 150 kN – Open Sided Frame
• Universal flexural and transverse machine 150 kN
• Flexural Testing Machine 200 kN
• Flexural Testing Machine 320 kN – C-Shaped Open Frame
• Flexure Testing Machine 360 kN

In order to improve concrete performance in the plastic state, macrofibers are added to the concrete mix to increase the post-crack bending strength. This process improves the capacity of the material to absorb energy after cracking (toughness property).

There are basically two test methods of the American Society of Materials Testing (ASTM) for evaluating the toughness of fiber-reinforced concrete: ASTM C1609 for beams and ASTM C1550 for round panels.

The European Committee for Standardization (CEN) proposes the method EN 14651 for beam specimens and EN 14488-5 for square panels.

• Deflection on Frc Beams
• Energy Absorption Test on Sprayed Concrete

All the compression and flexural machines can be improved with a full selection of accessories and spares parts.

Those elements change the user experience under several aspects such as security, ease of use, test performed, specimen conditioning, post-processing, report definition etc.

• Dual Ranges and Calibrations
• Softwares and Pc
• Packing Set for Testing Machines
• Platens
• Pressure Transducers
• Pumping Units
• Safety Guards for Testing Machines
• Testing Devices and Machine Accessories
• Unbonded Capping Pads and Retainers

This stell made testing frame is suitable for testing:

• Pipe max. diameter (external): 2600 mm
• Pipe min. diameter (external): 450 mm
• Pipe max. length: 2500 mm
• Lower bearers: 2500 mm long
• Upper crossbeam: 2500 mm long
• Frame of structural steel, bolted together with high strength bolts, so it can be easily assembled/disassembled for delivery or for site displacements. The frame has to be locked to a concrete base to be prepared by the customer.
• Two upper crossbeams, raised and lowered by a motor two speed operated winch. The upper frame crossbeam is locked in position by pins inserted through the columns.
• Two lower bearers supporting the pipe to be tested. The bearers are supplied both flat and “V” shaped as requested by the EN 1916 Spec.
• Upper loading beam, floating on a seat.

Power supply of the winch: 230/400V 3ph 50Hz 2000W
Frame dimensions: 3700x2500x6900 mm approx.
Weight: 7000 kg approx.

Note:
The testing frame is delivered disassembled and has to mounted on site following the instructions. The customer can also manufacture locally the testing frame, and purchase the loading/control system only. Testing frames with different capacity and features can be manufactured as per customer’s requirements. Quoted testing frame cannot be sold in the CE markets.

The force calibration of compression and flexural testing machines may be performed by using load cells connected to a digital tester.

These cells are also used in combination with testing frames in order to calibrate the load.

• Digital Tester with Microprocessor
• Class 2 Load Cells
• Class 1 Load Cells