The in-situ stress, deformability and resistance feature of masonry can be determined by the flat jack method . The test is performed by making a cut to a uniform depth into the mortar courses and inserting the flat jack or couple of jacks, which are pressurized to the desired level.
Test modes:
For stress determination a single flat jack has to be used.
For deformability and resistance determination two flat jacks have to be used.
The flat jacks have to be pressurized and the strain measured using the Analog or Digital mode as follows:
Analog measurement
The following accessories have to be used:
58-D0568/A Hydraulic pump with gauge. See accessories.
58-D0567/RS Connecting hose (to connect the two jacks). See accessories.
58-C230/30D Mechanical strain gauge. See accessories.
Digital measurement
The following accessories have to be used:
58-D0568 Hydraulic pump, less gauge. See accessories.
58-P0050 Pressure transducer. See accessories.
58-D0567/RS Connecting hose (to connect the two jacks). See accessories.
58-D0585 Electronic extensometer (one to three). See accessories.
82-P9008: DATALOG 8, 8 channels stand alone multipurpose data logger (see accessories).
Note.In order to fill conveniently the testing cut, use the sets of steel sheets of the same flat jack dimensions. See accessories.
Flat jacks are supplied without Km constant value.
Weights:
58-D0567/C2, 58-C0567/C20 …..kg. approx.
58-D0567/E2, 58-D0567/E20 …..kg. approx.
| Technical Specifications |
|
Code |
Analogical system (quantity needed) |
Digital system (quantity needed) |
| System with one flat jack |
System with two flat jacks |
System with one flat jack |
System with two flat jacks |
| Rectangular flat jacks |
58-D0567/C2 |
1 |
2 |
1 |
2 |
| 58-D0567/C11 |
1 or more |
1 or more |
1 or more |
1 or more |
| 58-D0567/C20 |
1 or more |
2 or more |
1 or more |
2 or more |
| Semi-oval flat jacks |
58-D0567/E2 |
1 |
2 |
1 |
2 |
| 58-D0567/E11 |
1 or more |
1 or more |
1 or more |
1 or more |
| 58-D0567/E20 |
1 or more |
2 or more |
1 or more |
2 or more |
| Hydraulic pump |
58-D0568/A |
1 |
1 |
1 |
1 |
| 82-P0050 |
- |
- |
1 |
1 |
| 82-P0349/ELT |
- |
- |
1 |
1 |
| 58-D0568/4 |
- |
- |
1 |
1 |
| 58-D0567/RS |
- |
1 |
- |
1 |
| Strain measurement |
58-C0230/30D |
1 |
1 |
- |
- |
| 58-D0585 |
- |
- |
1 or more |
1 or more |
| Datalogger |
82-P9008/F |
- |
- |
1 |
1 |
| 82-P9008/ELT |
- |
- |
2 |
2 |
| 82-P9008/SOF |
- |
- |
1 (optional) |
1 (optional) |
| Виробник |
| Виробник |
Controls |
58-D0567/C11 - Set of five steel sheets
58-D0567/E11 - Set of five steel sheets for semioval flat jacks
82-P9008/ELT - Set of four cables for connecting load cells, pressure transducers, strain gauges, LDT / LVDT / potentiometric type displacement transducers to DATALOG 8 (82-P9008) and GEODATALOG 8 ( 30-WF6008)
82-P9008/SOF - DATACOMM 2 data acquisition software and LAN cablefor PC connection of DATALOG 8 (82-P9008, P9008/F) - Up to 8 datalogger (total 64 channels) can be connected to a single PC creating a modular network (LAN hub is required)
82-P0050 - Connecting cable for pressure transducer. Suitablefor Smart-Line, Sercomp, MCC, Advantest control consoles and Compact-Line compression machines
82-P0349/ELT - DATALOG 8, 8 channels stand alone multipurpose data logger. 110-230 V, 50-60 Hz, 1 Ph
58-C0230/30D - Device for the measurement of length variation with digital dial gauge. Measuring base 300 mm. Measuring range 5 mm. Resolution 0.001 mm. Comprehends digital dial gauge with output for PC connection (special cable required). Conforming to BS 1881:206
58-D0567/RS - Connecting flexible hose, 700 mm length for testing two flat jacks
58-D0568 - Hydraulic hand pump with reservoir and flexible hose
58-D0568/A - Hydraulic hand pump with pressure gauge 100 bar range
58-D0568/4 - Connecting coupling for pressure transducer
58-D0585 - Tubolar electronic extensometer
