it might fracture due to thermal contraction but it wouldn't 'crumble' infact, it probably wouldn't fracture unless you done it a few hundred times.
i don't know if you could still call it weathering though as this wouldn't really occur in nature. a common weathering process on rocks that does cause them to crumble(albeit slowly) is when there is a crack in the rock that fills with water, freezes, thaws and freezes in a cycle. that process can reduce any rock to dust.