macadam

• n. 碎石；碎石路面
• n. (MacAdam)人名；(英)麦克亚当

来自19世纪苏格兰土建工程师John McAdam,字面意思即son of Adam.其于1822年设计了一种用颗粒大小一致的碎石子铺路的在当时领先的筑路技术。后这一技术被进一步改良，使用柏油和碎石搅拌以使路面更坚固耐用。

1. broken stone used in macadamized roadways

2. a paved surface having compressed layers of broken rocks held together with tar

macadam (n.)

1824, named for inventor, Scottish civil engineer John L. McAdam (1756-1836), who developed a method of leveling roads and paving them with gravel and outlined the process in his pamphlet "Remarks on the Present System of Road-Making" (1822). Originally the word meant road material consisting of a solid mass of stones of nearly uniform size laid down in layers (McAdam did not approve of the use of binding materials or rollers). The idea of mixing tar with the gravel began 1880s.

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

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.

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The construction techniques of cement treated macadam base are always paid more attention by highway constructors.

水泥稳定碎石基层的施工技术历来被公路施工单位所重视.

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