抽刀断水水更流 举杯浇愁、酱炒五花肉

问谷哥：我家浴室地板发高烧，很可能是混凝土板(concrete slab)下的热水管漏水造成的。如果关闭热水炉出水阀，要多久地板高温才能明显下降？ 谷哥：要等24到48小时呢 It typically takes 24 to 48 hours for a concrete slab to lose enough thermal energy for the floor above it to cool down noticeably after you shut off the hot water. Concrete is a massive thermal conductor and storage medium. The slab acts like a giant radiator; it has absorbed days (in our case, months) of continuous heat from the leaking hot water and holds onto that energy long after the supply stops.