Testing Fiber Reinforced Concrete and Shotcrete

Although Fiber Reinforced Concrete (FRC) has been patented in the 60’s, it is usually considered a new material. Fibers add structural contribute (even to fatigue), control micro cracks caused by shrinkage and freeze/thaw cycles (durability) plus improve resistance to impact, abrasion and fire resistance. Fiber content affects tensile post-cracking’s strength, therefore direct tension test would be the most representative test method. As these test methods are complex (especially for materials having softening behavior), bending test methods are preferred for FRC characterization.
 

Displacement Transducer for Measurement of Crack Opening

For determination of Crack Mouth Opening Displacement (CMOD) conforming to EN

Standards EN 14651

Clip gauge tranducer for CMOD test (82-P0331/E)
Description

 

This transducer is used for determining the Crack Mouth Opening Displacement (CMOD) conforming to EN 14651. The transducer have to be positioned over the notch sawn previously into the test beam.
This test has to be performed with a suitable flexural frame having proper stiffness and capacity as, for instance, our models 50-C15xx/FR or 50-C17xx/FR, and a control console capable of applying load in displacement control as our model MCC or Automax Multitest.
Products

 

82-P0331/E
Displacement transducer for measurement of crack opening, measuring range 3-8 mm, sensitivity 2,5 mV/V. Supplied with fixing jigs (10 pcs.)
 

 

Technical Specifications
  • Measuring capacity: 5 (3 to 8) mm
  • Rated output: 2.5 mV/V (5000×10-6 strain
  • Sensitivity: 1000×10-6 strain/mm
  • Non linearity: 1%RO
  • Temperature range: 0 to 40°C
  • Input/output resistance: 350 ohm
  • Recommended exiting voltage: less than 2 V
  • Allowable exciting voltage: 10 V
  • Input/output cable: 3 mmdia., 0.09 mm2, 4 core cable, 2 m
  •  
Accessories

 

82-P0331/E1
Fixing jigs (20 ps.) for P0331/E transducer

 

Energy Absorption Test on Slabs

To assess the thoughness of FRC slabs and shotcrete panels to EN and ASTM

Standards EN 14488-5 ASTM C1550

Testing FRC round slab on 300 kN flexure frame to ASTM Standard
Description

This test is performed to assess the flexural performance and the residual resistance characteristics of fiber reinforced concrete (FRC) and shortcrete slabs.

This test has to be performed with a suitable flexural frame having proper stiffness and capacity as, for instance, our models 50-C15xx/FR or 50-C17xx/FR, and a control console capable of applying load in displacement control as our model MCC or Automax Multitest.

The test can be carried out on square or round slabs according to EN standard or ASTM standard.

In both cases the test set includes a supporting frame for the sprayed slab, a loading spherically seated punch and a displacement transducer for central slab deflection measurement.

Testing to ASTM can be performed only in the flexure frames having 300kN or 350kN capacity.

Products

 

50-C1500/6
Accessory for 50-C15xx/FR and 50-C17xx/FR flexure frames for testing concrete slab to EN 14488-5. Including supporting square frame and spherically seated loading element. To be completed with displacement transducers 50-C1500/9 and 50-C1500/8. 
 
50-C1500/8
LDT displacement transducer for 50-C15xx/FR and 50-C17xx/FR flexure frames, 50mm travel, for underneath displacement measurement of sprayed concrete slab.
 
50-C1500/9
100mm LDT displacement transducer for 50-C15xx/FR and 50-C17xx/FR flexure frames for measuring piston travel. Complete with mounting adaptors
 
50-C1700/7
Accessory for flexure frames 50-C17xx/FR and 50-C1601/FR for testing sprayed concrete slab to ASTM C1550. Includes: 3-points supporting base and spherically seated loading element.
 
50-C1700/8
Displacement transducer for FRC slab central deflection, 60 mm travel
Technical Specifications

  •  

    Round slabs testing to ASTM C1550
    With SIMPLEX or DUPLEX frames 50-C17x1/FR and C-shaped open-structure 300kN frame 50-C1601/FR:
    50-C1700/7 Round lower support frame for fiber reinforced concrete round, slabs, 800 mm dia, 75 mm thick, complete with upper element for concentrated load. Conforming to ASTM C1550. 
    50-C1500/9 100mm piston travel displacement transducer 
    50-C1500/8 50 mm central slab deflection displacement transducer 

    As alternative:
    50-C1700/8 60 mm central slab deflection displacement transducer 


    Square slabs testing to EN 14488-5
    With SIMPLEX or DUPLEX frames 50-C15x1/FR or 50-C17x1/FR and C-shaped open-structure 300kN frame 50-C1601/FR:
    50-C1500/6 Auxiliary testing frame for energy absorption test on sprayed concrete specimens 600x600x100 mm, including supporting square base and loading element. Conforming to EN 14488-5.
    50-C1500/9 100mm piston travel displacement transducer 
    50-C1500/8 50 mm central slab deflection displacement transducer

Electro-Mechanically Operated Asphalt Mixture Performance Tester AMPTQube

Performed to assess the flexural performance and the residual resistance of FRC beams

Standards ASTM C1609 ASTM C1018

Typical configuration
Description

This test is performed to assess the flexural performance and the residual resistance characteristics of fiber reinforced concrete (FRC) and shortcrete. This test has to be performed with a suitable flexural frame having proper stiffness and capacity as, for instance, our models 50-C15xx/FR or 50-C17xx/FR, and a control console capable of applying load in displacement control as our model MCC or Automax Multitest. 
The complete set includes a frame suitable for proper positioning of transducers on the beam specimen, two high precision displacement transducers and an electric mean device (not required for Automax Multitest control console).

Mean device P0331/2 (see Accessories) shall be used with MCC control console only. See Techincal Specifications.

Products

 

50-C1500/5
Auxiliary testing frame for measurement of deflection of FRC beams to EN 14651, ASTM C1609
 
82-P0331/C
High precision displacement transducer LVDT type 10 mm travel
Technical Specifications

Confirguration needed to ASTM C1609

50-C1500/5  
Auxiliary testing frame for the measurement of deflection of beams

82-P0331/C  High accuracy displacement transducer 10mm travel (2 PCS needed)

82-P0331/2   Electric mean device for displacement transducer 82-P0331/C
Note: not required for Automax Multitest control console

Accessories
82-P0331/2
Electric mean device for 2 or 3 displacement transducers mod. P0331/A /B /C

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