One of the mysteries of the English language finally explained.
Broken stone of even size, bound with tar or bitumen and used in successively compacted layers for surfacing roads and paths.
- ‘In 1906 Eltham's Bridge Street and High Street became the first tarred macadam (tar-sealed) roads in New Zealand.’
- ‘We will be continuing our programme of macadam overlays for regional and local roads around the county.’
- ‘How good a road is going to be depends on how the design is laid out initially vis-a-vis the layer of bitumen, macadam, coat of slurry seal or fog seal.’
- ‘Its fertile soil was seeded in shame with concrete and macadam, and what grew were traffic lanes and cities like Plainfield, hot and steamy in the month of July.’
- ‘It left the macadam in the streets cracked and flaking.’
- ‘The dust clouds raised by cars were still asphyxiating, but macadam was slowly bringing relief.’
- ‘While meticulous plan after meticulous plan succeeded in liberating half a ton of gold bullion, the scheme was bound to be foiled by the windy alpine roads, and a piece of damaged macadam.’
- ‘The bituminous material at each site was dense bituminous macadam, which typically had a bitumen content of 4.0-4.5%.’
- ‘Going by the calculations of the Chennai Corporation, each square metre of road laid with bituminous macadam costs the civic body Rs.450.’
- ‘The roads shall have sensory speed detectors, traffic lights and tar macadam.’
- ‘In the absence of surface dressing, dense bitumen macadam tends to polish and become dangerous.’
- ‘He made the point that a dense bitumen macadam base course was not designed to be skid resistant and he was not aware of any specification for skid resistance on a base course.’
- ‘Thanks to balky local governments, the full length was not finally surfaced with concrete or macadam until 1937.’
- ‘The dense bitumen macadam surface, in the absence of any other dressing, tends to polish and became dangerous, particularly after rain.’
- ‘Once the newly laid lanes are open, the existing road will be shut to traffic and the top layer will be scraped off and fresh wet mix macadam laid.’
- ‘Paving was usually done with asphalt or macadam, though brick paving blocks were also used.’
- ‘Scribbled in her untidy scrawl were the words I love Nate Litz written across her macadam driveway in a pale rose-colored chalk.’
- ‘I retraced my route down the gold brick driveway out to the macadam state road.’
- ‘Some stall floors are macadam and stone dust with bedding over top.’
- ‘The result was that in 1906, Eltham became the first town in New Zealand to have a tarred macadam (tar-sealed) street.’
Early 19th century: named after John L. McAdam (1756–1836), the British surveyor who advocated using this material.
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