Strain gauges and strain meters are used for measuring strain in a range of materials, including steel and concrete. These gauges record and monitor deformation due to load stress that could affect the integrity of a structure. These products are used during construction of mass concrete structures such as dams, bridges, and tunnels and on steel reinforcements such as ground anchors, struts for open excavations and rebars for reinforced concrete.
When installed, Strain Gauges and Strain Meters provide ongoing monitoring of strain at key points in the structure, providing the information essential to maintaining balanced structural integrity. Strain Gauges and Strain Meters can be welded to or embedded in various structures, depending on the product and specific application. Rebars embedded in concrete, cable bolts, and steel members as well as the concrete itself, are just a few of the supporting components that must be monitored in order to protect the integrity of the overall structure.
RST’s Vibrating Wire Rebar Strain Meter, is designed to measure strain on rebar embedded in concrete and is affixed to the rebar cage itself. When mounted with the intention of measuring the concrete itself, it is also referred to as a Sister Bar. These gauges are commonly used in concrete piles, diaphragm walls, and concrete foundation slabs.
The Vibrating Wire Strain Gauge is available in three different models suited to different modes of installation—two for use on steel structures (Arc Weldable Gauges and Spot Weld Gauges), and one designed to be embedded in concrete (Embedment).
All Vibrating Wire Strain Gauges can be monitored either manually using a RST VW2106 Vibrating Wire Readout or for a fully automated system, used together with an RSTAR Affinity Datalogger and RSTAR Affinity Gateway for remote access to the data.
I’m very happy with the quality of the instrumentation and technical support from RST, as always. They worked with us from the initial stages of the project to ensure that we were fully prepared and equipped to use the RSTAR network for the first time. They delivered everything within the tight project time frame to ensure that there were no delays on site, and the submersible tilt meters looked like new even after over twelve months of being submerged in Thames water!
-Richard Lipscombe, BEng (Hons), Director & Principle Consultant - RL Geotechnical Ltd