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Caterpillar soil compactor equipped with padfoot drum, being used to compact the ground before placing concrete Antique "Kemna" steamroller. A road roller (sometimes called a roller-compactor, or just roller [1]) is a compactor-type engineering vehicle used to compact soil, gravel, concrete, or asphalt in the construction of roads and foundations. [1]
The plate compactor, vibrating plate, or tamper, has a large vibrating baseplate and is suited for creating a level grade, while the rammer compactor has a smaller foot. The rammer, or trench rammer, is mainly used to compact the backfill in narrow trenches for water or gas supply pipes etc. Road rollers may also have vibrating rollers.
The rebuilt upper reservoir of the Taum Sauk plant, nearing completion in this photo, is the largest RCC dam in North America. [1]Roller-compacted concrete (RCC) or rolled concrete (rollcrete) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for portland cement. [2]
Hyster also manufactured a successful line of compaction machinery and road-rollers, including machines for earth compaction, garbage compaction and asphalt compaction. Through the 1960s and 1970s Hyster was a major force in these types of machinery in America and they produced a wide range of models with many successful design concepts.
The site in Karlskrona opened in 1960, which made heavy rollers and had the company's technical centre. The CA 25 road roller introduced in 1970 became the world's leading compaction roller. It changed its name to Dynapac Maskin AB in 1973; at this moment the company rapidly expanded its product range.
The Proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density. The test is named in honor of Ralph Roscoe Proctor [ de ] , who in 1933 showed that the dry density of a soil for a given compactive effort depends ...
In 1995, VME became a fully owned Volvo company and changed its name to Volvo Construction Equipment. In 1998, Volvo CE became the first foreign company to invest in Korea. The acquisition of Samsung Heavy Industries (Construction Equipment Division) increased its sales and presence in Asia. In January 2007, Volvo purchased 70% of SDLG.
A paver (road paver finisher, asphalt finisher, road paving machine) is a piece of construction equipment used to lay asphalt concrete or Portland cement concrete on roads, bridges, parking lots and other such places. It lays the material flat and provides minor compaction. This is typically followed by final compaction by a road roller.