| 释义 |
frost boil
frost boiln. Upper Midwest See frost heave.frost′ boil`
n. Canadian. a frost heave. [1950–55] frost boil
frost boil[′frȯst ‚bȯil] (geology) An accumulation of water and mud released from ground ice by accelerated spring thawing. A low mound formed by local differential frost heaving at a location most favorable for the formation of segregated ice and accompanied by the absence of an insulating cover of vegetation. frost boil1. A defective spot on a concrete surface resulting from swelling and subsequent disintegration caused by the action of frost on entrapped moisture. 2. The softening of soil during a period of thaw, owing to the liberation of water. |