这个名称的碎石建设原则，是目前仍在使用的。

This name for the MacAdam building principle is still in use today.

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FieldTurf还会寻求新的材料：也许使用可循环的塑胶地砖以代替底层的碎石层，这样草皮植入时会更加快捷，便宜。

FieldTurf is looking at new materials: instead of gravel underneath the surface, it might start using recycled plastic tiles, which would be faster and cheaper to install.

youdao

人们曾经使用“石结”基层——几层由石粉黏结在一起连续的碎石层。

Macadam type bases involving successive layers of crushed rock bound with rock dust were also used.

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