The AMS 300 Dynamic Cone Penetrometer (DCP) with Dual Mass Hammer is a highly efficient and portable field equipment that provides quick and accurate determinations of soil shear strengths at depths up to 6ft (1.8m), with the option of using extensions for deeper testing. Designed by the United States Army Corps of Engineers and meeting ASTM requirements, this DCP is a reliable tool that bridges the gap between laboratory pavement design and construction quality assurance.
The DCP measures the penetration resistance of the soil using a sliding hammer, which provides blows per millimeter. To ensure that the energy is not lost to skin friction on the rods, the cone diameter is larger than the rod. There are two options for the driven points: multi-use Hardened Steel or single-use Disposable Cones. The Disposable Cones are left in place, making them ideal for situations where extraction would be difficult. Both cones have a maximum diameter of 0.790in (20.1mm) and taper at a 60° angle to a point. The rods can easily be assembled with quick-connect pin fittings and can reach depths of about 28¼ in (71.8cm). For deeper testing, optional extension rods with threaded connections can be purchased separately.
The DCP with Dual Mass Hammer is effective in soils with CBR values ranging from 0.5 to 100. In soils with higher strengths, the exclusive Dual-Mass Hammer Assembly assists with penetration. This 8kg (17.6lb) Hammer assembly is constructed of stainless steel. Alternatively, for weaker soils with CBR values of ten or less, the hammer can be converted to a 4.6kg (10.1lb) unit.
The kit includes a crush resistant Pelican case with transport wheels for easy transportation. It also contains the Dual-Mass Hammer assembly, a 30in (76.2cm) drive rod, and twenty-five disposable cones with an adapter. Additionally, a vertical scale, hardened point, T-handled hex wrench, 3-in-1 oil, and Loctite are included. The user’s manual features software with an Excel® template for convenient DCP data reduction.
Accessories such as additional disposable cones, cone adapters, and hardened points can be purchased separately. The AMS 300 DCP with Dual Mass Hammer meets the ASTM D 6951 test method.
Overall, the AMS 300 DCP with Dual Mass Hammer is a reliable, portable, and accurate tool that allows for quick and precise field determinations of soil shear strengths, making it an essential asset for construction quality assurance and pavement design.
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