Earthworks (excavation + gravel compaction) during frost

Hello everyone,

At the moment, my ground worker is excavating the construction pit and plans to compact and pile gravel + crushed stone next week.

For us, night temperatures between -2 and -7 degrees are forecasted for next week, and daytime temperatures between 0 and 5 degrees.

I have read on the internet that compaction cannot be done properly during frost and that this may have an impact on the structure later (settlements).

Should I ask the ground worker to wait with the work until it is frost-free at night, or what would you recommend? Are there measures he can take to ensure everything is properly compacted?

If he compacts this week and also compacts the gravel + crushed stone on top, would that be okay for the load-bearing capacity?

Thank you all.

If you have hired a professional as a groundworker, they should contact you on their own if it is too cold for the work. However, I think that with the prevailing daytime temperatures, there are no major problems with compaction.