Online Google Dictionary

compaction 中文解釋 wordnet sense Collocation Usage Collins Definition
  1. an increase in the density of something
  2. crush: the act of crushing
  3. The process of compacting something, or something that has been compacted
  4. (compactions) Fossils that have undergone some degree of flattening of their three-dimensional structure.
  5. (Compacted) This is a characteristic of a dry solid material to compress and/or harden, usually due to head-load or another type of pressure. Generally, pressure sensitive or cohesive materials will compact. Also, very fine materials often exhibit this characteristic.
  6. (Compacted) Soil that has increased in bulk density due to heavy foot or motor traffic. Many roots cannot penetrate into compacted soil because it is so dense, and compacted soils often become waterlogged or starved for oxygen which further impact the tree’s growth.
  7. (compacted) when the dead bark is persistent and compact with narrow fissures, usually kino impregnated
  8. squeezing of soil that results in loss of pore spaces.
  9. Increase in soil density through destruction of its pore space, as by excessive traffic or working the soil especially when it’s wet.
  10. The use of a piece of equipment to intensely pack soil, base material and sand bedding. Often using a powered tamper or plate compactor.
  11. The densification of a fill by mechanical means.
  12. the act or process of pressing materials together to occupy the smallest volume possible; a common practice at a sanitary landfill.
  13. Compression of the soil such that it is difficult to plough, and water cannot drain through it effectively.
  14. In soil, compaction occurs when weight of grazing animals/livestock or heavy machinery compresses the soil. The soil then is less able to absorb water.
  15. event in early cleavage-stage mammalian embryo during which blastomeres become tightly joined, forming gap junctions enabling the exchange of ions and small molecules to pass from one cell to the next.
  16. A garbage collection technique that results in live objects occupying a dense portion of the virtual address space, and available space in another portion of the address space. Cf. free list.
  17. grain rearrangement that brings grains closer together
  18. The diagenetic process by which the volume or thickness of sediment is reduced due to pressure from overlying layers of sediment.
  19. The destruction of soil structure by heavy vehicles (such as tractors) or by livestock.
  20. The act of increasing the Density of HMA by applying a specific amount of loading. In the lab, this is done with a Marshall hammer or a Superpave Gyratory Compactor. In the field (during construction of the pavement), this is done with various combinations of Steel-wheel and Rubber-tired Rollers.
  21. mechanical or hydraulic consolidation of backfill to achieve stability.
  22. Compressing roadway materials to their optimum density, providing a strong, stable surface.
  23. Compressing wastes to reduce their volume. Compaction allows for more efficient transport, but may reduce aeration.
  24. Process of manual or mechanical treatment of fresh mortar which increases its density.(EN 13318)
  25. Applying mechanical force to soils so they are no longer compressible. It is important to compact foundation and backfill soils to prevent future wall movement. Compaction is often accomplished using a hand tamper or a vibratory-plate compactor (available at most rental stores).