The Laboratory Asphalt Permeameter 4" (102mm) Dia. Specimens utilizes the falling head method to determine hydraulic conductivity of saturated 4in diameter asphalt cores or laboratory compacted specimens. This simple, easy-to-use Permeameter design is based on test procedures developed at Florida DOT.
The permeameter is self contained and ready for use. The asphalt sample is placed inside a metal cylinder and held in place by expanding discs. A rubber membrane inside the metal cylinder is pressurized to fill voids and eliminate flow down the outside of the core. Permeability of the prepared specimen is determined by timing flow from the included 500cc Manometer through the sample. This model includes a self-contained hand pump which provides vacuum to hold the membrane out against the metal cylinder during assembly as well as confining pressure to push the membrane against the core during testing. A dial gauge displays pressure applied by the hand pump. Included with Permeameter are two 4in (102mm) Rubber Membranes. Replacement 500cc Manometers are available. Optional 2,000cc capacity Manometers are available for more permeable samples.
Meets Test Method:
FLORIDA FM 5-565