Tandem Roller. Monday , June 04th , 2018 - 14:58:25 PM
The next course (road base) would be compacted using a smooth single drum smooth tandem roller or pneumatic tyre roller in combination with a grader and a water truck to achieve the desired flat surface with the right moisture content for optimum compaction. Once the road base is compacted the smooth single drum compactor is no longer used on the road surface (There is however an exception if the single drum has special flat-wide-base tyres on the machine).
As internal combustion engine technology improved during the 20th century kerosene- gasoline- (petrol) and diesel-powered rollers gradually replaced their steam-powered counterparts. The first internal-combustion powered road rollers were very similar to the steam rollers they replaced. They used similar mechanisms to transmit power from the engine to the wheels typically large exposed spur gears. Some users did not like them in their infancy as the engines of the era were typically difficult to start particularly the kerosene-powered ones.
Steam rollers were often dedicated to a task by their gearing as the slower engines were for base compaction whereas the higher geared models were often referred to as chip chasers which followed behind the hot tar and chipping laying machines. Some road companies in the United States used steamrollers through the 1950s and in the UK some remained in commercial service until the early 1970s.
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