Concrete strain gauge

for stress analysis

This particular type of gauge is installed in diaphragm walls, struts, piles, and tunnels as it measures stresses and strains in concrete. These steel bars have a Wheatstone bridge attached to measure the stresses of the bar. Only two of the strain gauges are active thus removing the influence of flexing and thermal variations. This simplifies the readings and takes away the need for additional complicated calculation or instrumentation. The sensor is protected from damage from impact by layers of resin which also protects the device from pressure from submersion in liquids. Therefore theses gauges can be attached to reinforced cages and embedded in concrete.