1.953 x 1.953in (49.6 x 49.6mm) Porous Stone, 0.25in Thick (6.35mm) is placed at the top or bottom of soil specimens during direct shear testing to allow free flow of fluids through the sample under load. The sturdy stone is made of porous aluminum oxide.

Features:

Supports soil specimens during testing
Enables easy flow of fluid throughout the test

Included Items:

1.953 x 1.953in Porous Stone, 0.25in Thick

Related blogs:

Soil Direct Shear Test: Understanding the Process

Product tags

AASHTO T 236 (31)
,
ASTM D3080/3080M (32)

Specifications

Attribute name	Attribute value
Shape	Square
Size	1.953 x 1.953in (49.6 x 49.6mm)
Thickness	0.25in (6.35mm)
Material	Aluminum Oxide
Estimated Shipping Weight	1.0lb (0.45kg)

Product Q&A

Q: How are longer specimens extracted and the piston returned?

Specimens longer than 5in are extracted by repositioning the Adapter Ring after maximum piston travel, and the spring-loaded piston automatically returns to the start position when the release valve is opened.