Gilson Company, Inc. Lab Asphalt Permeameter, 4" (102mm) Dia. Specimens AP-14

Laboratory Asphalt Permeameters utilize the falling head method to determine hydraulic conductivity of saturated 4in and 6in diameter asphalt cores or laboratory compacted specimens. This simple, easy-to-use Permeameter design is based on test procedures developed at Florida DOT. 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. Both models include 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 each Permeameter are two APA-144 4in (102mm) or two APA-166 6in (152mm) Rubber Membranes. Replacement 500cc Manometers are available as APA-105. Optional 2,000cc capacity Manometers are available as APA-120 for more permeable samples. Est. Ship Wt.: 22lb (10kg).