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

 

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; expanson 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.

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Description

Design

Rigid, four-column load frame in space-saving compact design.

Plunger piston mounted at base. Piston hardened, piston and cylinder micro finished. Piston equipped with protection cap and stroke indication; with angular pressure plates additionally with torsion safety. Columns clamped free of play. Bearing blocks hardened and ground (hardness HRC > 55). Upper bearing block tillable up to 3° in spherical seat. Lower bearing block equipped with cross hairs and centering ring 155 mm.

 

Working Principle

The load frame is connected to the TONINORM power box with TONITROL control system. Tests are prepared, performed, monitored, and evaluated via software. Controlled by a servo valve in closed loop. Load measuring with precision oil pressure transducer.

 

Optional Accessories for the Load Frame

Waste trap sheet 2091.X000.39: Lower pressure plate equipped with waste trap sheet (right and left)

Two auxiliary plates 2091.X000.44: 300 mm, 65 mm high, to be placed below the lower pressure plate

Piston stroke 200 mm 2031.X000.51: Extension of the piston stroke from 65 mm to 200 mm

Auxiliary plate movable by sliding rails 2091.X000.61: 320 x 520 mm, 75 mm high, hardened and ground. Only suitable with pressure plates 320 x 520 mm

Test area protection 2091.X000.82: consisting of an all-around closed cage, made of profiles with makrolon panes (high-strength plastic material). One door (front side) with electrical safety switch. (Requested in EU for CE conformity)

 

Auxiliary plates 4090.XXX: in different highs

Centering templates 4400.XXX: for different specimen formats, adapted to the different pressure plate sizes

 

Optional Accessories Young´s Modulus

Electronic transducer 0712.XXX: for determination of modulus of elasticity, longitudinal and transversal deformation with DIN and ISO

Potentiometric piston path transducer 2031.XXX.0702 for displacement measurement and control

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 = – 2031.3002 – Option 2031.X000.30 (only lower one) = 300×300 mm – Option 2031.X000.32 = 320×520 mm – Option 2031.X000.33 = 380×520 – Option 2031.X000.34 = 420×520 2031.4000.000 – Option 2031.X000.30 (only lower one) = 300×300 mm – Option 2031.X000.32 = 320×520 mm – Option 2031.X000.33 = 380×520 – Option 2031.X000.34 = 420×520
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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