frost action การใช้

• Besides having been extensively fractured by frost action, it is unweathered.
• Because of the susceptibility of thinner pavements to frost action.
• These stacks are vulnerable to frost action and often collapse leaving trails of blocks called clitter down the slopes.
• The highly fractured granite and basalt have been eroded by frost action as well as by the brook's water.
• Superimposed on this pattern are the fascinating shapes and textures created by intense frost action in the soil ."
• Paving bricks are more durable than regular bricks, and the SW rating means they will be resistant to frost action.
• This is done by finding places where the sleepers have sunk from the weight of the passing trains or frost action, causing the track to sag.
• Cryoseisms typically occur when temperatures rapidly decrease from above freezing to permeable materials like sand or gravel, which are susceptible to frost action, are likelier candidates for cryoseisms.
• All the boulders in the stone runs are remnants of quartzites that were repeatedly ground down from repeated weathering, perhaps by a combination of frost action and thermal fatigue.
• As Cushing et al explain, " frost action aids in pushing these blocks apart, cracks are widened into caves, and a tangle of blocks results, separated by passages of uneven widths ."
• The pass was named after nearby Sylvan Lake ( derived from medieval Latin sylv
  
  nus, from Latin Silv
  
  nus, god of the woods, from silva, forest ), and was formed by frost action breaking the rocks.
• In cases where frost action has caused adjacent rails to rise higher, ballast tampers can raise rails above their original level to make the line level again . " Lining " rails doesn't involve ballast tamping, it merely ensures the rails are perfectly parallel and straight as possible.