With winter finally coming to a close the construction season in the Mid-Atlantic region is picking up steam. With this seasonal uptick we at Alpine Rockwheel are getting more and more calls as excavation contractors and engineers recognize the benefit…
In a head-to-head trial the Alpine Rockwheel model D30M (mining version) hydraulic rock cutting attachment was found to cut smoother, stronger and more continuously when compared to a competitive unit the customer was testing. This was an ideal comparison because the…
Two 200-hp G45 Rockwheels installed on CAT349 excavators have helped the contactor complete a challenging rock excavation project in New York state. Geo technical data indicated rock to be in the 14,000 psi range. Because they were excavating next to…
The Alpine D10 Rockwheel is the tool of choice for cutting potash. Here you see the tool working in the Canadian potash mines for scaling, floor leveling, and trimming the back (roof) of the tunnel network. This 40-hp (30-kW) cutter…
The Rockwheel D30 is getting some great press from down under. Extremely precise rock grinding with minimum disturbance to the adjacent material. The same applies to tunneling work and concrete removal on sensitve structures. Alpine stocks the full line of…
An interesting project is underway in the State of Indiana in the USA. The contractor is using an Alpine D30 Rockwheel installed on a CAT336 excavator to precisely remove 4-ft of hard limestone shelf rock in order to place 96-ft…
With regard to trenching in rock, a frequent question I get from customers and equipment dealers is “When do I use a RockWheel vs. a hammer or ripper bucket?” The answer is somewhat simple, the RockWheel is the best option…
For larger diameter shafts through unstable soils, the use of interlocking hard / soft CFA (continuous flight auger) piles is a highly cost effective method of shaft sinking. Alpine’s RockWheel rock & concrete grinders are often an important tool in these…
Trenching and rock excavation projects are always tall tasks. The inherent uncertainty and variability of rock strength (measured in psi or MPa) and quality (degree and spacing of fractures) makes bidding these projects a challenge and predicting production rates even more…
Caisson walls are composed of vertically drilled, intersecting reinforced concrete piles constructed for ground support during excavation and construction activities, especially in urban areas where work is being done close to existing structures.
The resulting vertical face is a series of…
Alpine’s partnership with researchers at the Pennsylvania State University continues into 2014 as we continue to improve our soil mixer designs. Using numerical modeling and particle tracing we’re simulating the complex interaction between fluid-solid mixtures and mixing tools in order…
