Lo Errázuriz Metro

Solution

ObraLink Resistencias with RSense2 sensors was implemented, enabling real-time monitoring without core samples. A protection system using watertight thimbles and 3D-printed housings was developed for harsh site conditions. Everything was integrated without altering construction workflows.

Results

• Continuous and automated monitoring: 13 measurements were taken, with 11 of the 14 points reaching the required tension strength (21 MPa) in under 24 hours. The remaining two did so in under 38 hours, establishing a maximum of 48 hours (see chart).
• Tensioning time reduction: ObraLink Resistencias technology enabled tensioning up to a third faster than the usual timeframe, improving workflow and reducing excavation delays (see chart).
• Increased operational efficiency: Automating strength control improved planning accuracy and minimized surprises at the time of tensioning.