Is your campfire trying to kill you? Exploding Rocks & Concrete

The video explores the potential dangers of exploding concrete and rocks when exposed to high heat. It begins with an introduction to the phenomenon and proceeds with experiments using different concrete mixes, including those with Orbeez, rebar, and steel BBS. The video also tests the explosion potential of various rocks in a campfire, both wet and dry. The results show that while small explosions occur, they are not significantly dangerous. The video concludes with a DIY super spalling concrete mix test, demonstrating the explosive potential when molten aluminum is poured into it.

What did the experiment reveal about the dangers of using certain types of rocks in campfires?

What safety precautions should be taken when working with molten aluminum?

What was the outcome of pouring molten aluminum into the specially prepared concrete?