Load Frame for Compressive Strength Tests – Model 2031

Load frame in compact design for the standard-compliant compressive strength tests on building materials, preferably for efficient routine tests and quality control on:

Concrete cylinders 150 x 300 mm or 160 x 320 mm according to EN 12390-3
Concrete cubes with 100 mm, 150 mm or 200 mm edge length according to EN 12390-3

Accuracy: Quality Class 1 / DIN 51220 / EN ISO 7500-1 / EN 12390-4
Sizes: 2000 kN / 3000 kN / 4000 kN

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Categories: Compressive Strength Testing Machines, Concrete, Standard & Testing, Testing Machines

Description
Additional information

Description

Key benefits for the user:

✓ Design according to EN 12390-4 available (strain cylinder)
✓ Prepared for the connection with a ToniNORM-Powerbox as standard
✓ Combinable with up to 2 load frames of the modular system ToniNORM
✓ Measurement of the “modulus of elasticity” (Young´s modulus) possible
✓ Automatic test procedure with control system ToniTROL
✓ High torsional stiffness; expansion of max. 1.0 mm at full load

For this load frame are various pressure plates, a large range of accessories and optional extensions available.

Design

Torsion-resistant, four-column load frame with backlash-free braced columns in space-saving compact design.
Bottom-mounted plunger drive with hardened piston, equipped with protective cover, stroke indicator and limit switch for stroke limitation. Piston and cylinder are finely ground.
Pressure plates hardened and ground. Upper pressure plate tiltable by 3° by means of a ball seat. Lower pressure plate provided with crosshair and centering ring.

Operating Principle

The load frame is connected to a ToniNORM Powerbox and the ToniTROL II measurement and control system. The tests are prepared, carried out, monitored and eval-uated by software. Control is provided by a closed loop servo valve. The test load is measured by means of a precision oil pressure transducer.

Additional information

max. test load	2031.3000.000 – 3000 kN 2031.3002 – 3000 kN 2031.4000.000 – 4000 kN
Distance between the columns	2031.3000.000 – left / right = 355 mm – ahead / rear = 255 mm 2031.3002 – left / right = 450 mm – ahead / rear = 450 mm 2031.4000.000 – left / right = 450 mm – ahead / rear = 450 mm
Pressure plates	Normal 2031.3000.000 – Option 2031.X000.30 (only lower one) = 300×300 mm Option 2031.X000.32 = 320×520 mm Option 2031.X000.33 = – Option 2031.X000.34 = – Option 2031.X000.30 (only lower one) = 300×300 mm Option 2031.X000.32 = 320×520 mm Option 2031.X000.33 = 380×520 mm Option 2031.X000.34 = 420×520 mm Option 2031.X000.30 (only lower one) = 300×300 mm Option 2031.X000.32 = 320×520 mm Option 2031.X000.33 = 380×520 mm Option 2031.X000.34 = 420x520mm
Hardness of the pressure plates	55 HRC
Distance of the pressure plates	Normal 340 mm
Piston stroke	Normal 2031.3000.000 = 65 mm 2031.3002 = 65 mm 2031.4000.000 = 100 mm
Expansion (at initial load)	1,0 mm
Working pressure	2031.3000.000 = 454 bar 2031.3002 = 454 bar 2031.4000.000 = 372 bar
Working height	At stroke 65/100 2031.3000.000 = 770 mm 2031.3002 = – 2031.4000.000 = 770 mm At stroke 200 2031.3000.000 = 770 mm 2031.3002 = 770 mm 2031.4000.000 = 820 mm
Total height	At stroke 65/100 2031.3000.000 = 1450 mm 2031.3002 = 1450 mm 2031.4000.000 = 1773 mm At stroke 200 2031.3000.000 = 1450 mm 2031.3002 = 1450 mm 2031.4000.000 = 1873 mm
Net footprint	2031.3000.000 = 730 x 500 mm 2031.3002 = 730 x 500 mm 2031.4000.000 = 890 x 660 mm
Net weight (depending on the size of pressure plates)	2031.3000.000 = 1490 kg 2031.3002 = 1685 kg 2031.4000.000 = 4390 kg