Handbook for Bridge Inspections - TSP2

Ability to Accept New
Layers of Pa int
Ana lysis o f o ld Pa int
This should be checked with regard to old surface coatings and to
the adhesive bond ing between old and new surface coatings.
It can be advisable to anal yse samples of the old surface coatin g to
ascertain its composition with some certainty.
7.8 Readings from
Instruments
Instruments can be mounted on a bridge to follow the development
ofa situation over a peri od of time. This will act as a suppl ement
to visual checks, measurements and materials testi ng. In some
instances instruments are installed to veri fy the stress levels 10
which the bridge is subjected. The fo llowing are representati ve of
the instruments which could be used:
Instrume ntation
* Reference electrodes
* Equipment for measuri ng the speed of corrosion
* Wind speed detector
* Wave height detector
* Resistant Wire Strain Gauge (on steel)
* Vibrating Wire Strain Gauge (on concrete)
The instruments can be read during main or special inspecti ons or
separately if desired.