- 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。
- 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.
- 1. In this research lime - fly - ash bound macadam was joined with glass fibers in lab tests.
- 2. After experiment , we made a lot initial clinical applications and got ideal macadam effect.
- 3. By means of high - temperature curing, the curing period of lime - fly ash stabilized bound macadam is shortened.
- 4. Macadam type bases involving successive layers of crushed rock bound with rock dust were also used.
- 5. The construction techniques of cement treated macadam base are always paid more attention by highway constructors.
[ macadam 造句 ]