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Road Roller
(redirected from Road rollers)

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Road Roller 

(compactor), a machine for compacting earth, road foundations, and road surfaces by rolling. Road rollers are used in road, railroad, industrial, mining, hydraulic-engineering, and airfield construction.

Road rollers can be either self-propelled or drawn; in theiroperating principle they can be static or vibrating. The workingparts of a road roller are rigid steel drums. The surfaces of thedrums can be flat or with a grid or cams (lugs). The rigid drumsin certain designs have been replaced by pneumatic tires. Trac-tor-drawn rollers with flat drums (static and vibration action), cams, and balloon-tired rollers are used to compact earth androad foundations. The self-propelled rollers with flat drums(two-drum or three-drum, static or vibration action) and withballoon tires are used chiefly for compacting road surfaces. Theefficiency of compacting depends on the specific pressure on thesurface; the weight of the roller is increased by using ballast(reinforced-concrete blocks or containers with sand). The weightof a road roller is from 5 to 50 tons, and it operates at a speedof 2-8 km/hr.

IU. A. BROMBERG
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Some of the shallow-water coral reefs look as if they've been crushed by road rollers," said Chen Chaolun, a researcher at the institution.
Taiwan coral reefs need 100 years to recover: scientists by AFP / AFP Global Edition
His parting shot to me was that he would have one of the small walk-behind diesel road rollers dropped off for me to smooth and firm the surface.
Road to success; Graham Denby in PORTUGAL by Huddersfield Daily Examiner (Huddersfield, England)
Workers building the Stockton South link road were stunned to discover thieves had stolen one of their three-ton road rollers.
pounds 18,000 machine stolen from site by Evening Gazette (Middlesbrough, England)
 
 
 
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