Example of Ter-Mite use: boulder removal

In this example six 40 mm x 850mm holes were drilled into about 1.7m3 of rock.
Four holes would have done the job but we wanted to end up with smaller pieces.
We could have left two holes unfilled but decided to use all the Ter-Mite we had mixed.

Any drill-size of 32-52mm would have been okay for this kind of work.

The rock was very hard so about 20-30cm hole spacing was used.

We used 10 kg of Ter-Mite, which filled all holes all the way to the top and I still had some left. Usually we only fill about 85% of the holes.

When we started, the temperature was +5°C. During the day it dropped to 0°C, and during the night it went below freezing. After 24 hours, hairline cracks appeared, and after 48 hours the rock was broken. No tools were used after initial drilling.

Average temperature during this process was about 0°C (32°F). The expansive demolition process is faster when the temperature is higher and slower when it’s near to or below freezing.

Another success with Ter-Mite!