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
|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|