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

 

 

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

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