Strain gauge selection for measurement of reinforcing bars
For strain gauge instllation on reinforcing bars of concrete structures, surface treatment and coating are necessary.
| Strain gauges | F series (e.g. FLAB-3-11-5LJBT-F) Gauge length 3mm,self-compensated for mild steel, pre-attached 5m leadwires in 3-wire system |
|---|---|
| Adhesive | CN |
| Coatings | W-1, SB Tape, VM Tape, Self-bonding tape (No.11), bandage, P-2 |
| Other | Re-bar coating tape |
Strain gauge selection for reinforcing bars
As In general, metal is homogeneous, no longer gauge length is required but 1 - 6 mm is sufficient. Strain gauges with narrow base width such as FLKB-2-11 should be selected. The following table is a representative example of selection.
| Applicable gauges | Applicable re-bar | |||||
|---|---|---|---|---|---|---|
| D4 | D6 | D10 | D13 | D16 | D19 - D35 | |
| FLKB-2-11 |  |
 |
 |
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| FLAB-2-11 |  |
 |
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| FLAB-3-11 |  |
 |
 |
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| FLAB-5-11 |  |
 |
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