Shotcrete cure monitoring
Safecrete embeds single-use wireless sensors into sprayed shotcrete during the normal spray cycle, tracking cure in real time, so crews re-enter tunnel linings and headings on measured strength, safely and early.
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The sensor
Safecrete is a single-use maturity sensor, 20 × 20 × 16 mm, encapsulated in epoxy resin so it survives spraying and the underground environment. One sensor per cubic metre reads the curing mix from inside the shotcrete itself.
How it's deployed
Swipe a magnet across one sensor per cubic metre to wake its reed switch.
Drop it into the sprayer hopper as the shotcrete is loaded.
Hand or mechanised spraying embeds it in the tunnel or heading lining.
A gateway in the heading captures maturity data and backhauls it to the cloud.
The result
Strength is estimated in real time against your pre-calibrated batch mix, admixtures and accelerators included, across every location, for safe, early re-entry and high-speed development.