Tandem Roller. Monday , June 04th , 2018 - 15:09:55 PM
The next machine is usually a single smooth drum compactor that compacts the high spots down until the soil is smooth and this is usually done in combination with a motor grader to get a level surface. Sometimes at this stage a pneumatic tyre roller would be used. These rollers feature two rows (front and back) of pneumatic tyres that overlap and the flexibility of the tyres provides a kneading action that seals the surface and with some vertical movement of the wheels enables the roller to operate effectively on uneven ground. Once the soil base is flat the pad drum compactor is no longer used on the road surface.
In a sequence of gears chained together the ratio depends only on the number of teeth on the first and last gear. The intermediate gears regardless of their size do not alter the overall gear ratio of the chain. However the addition of each intermediate gear reverses the direction of rotation of the final gear.
A road roller (sometimes called a roller-compactor or just roller) is a compactor type engineering vehicle used to compact soil gravel concrete or asphalt in the construction of roads and foundations. Similar rollers are used also at landfills or in agriculture.
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