Expansion Index Test Apparatus

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Expansion Index Test Apparatus




Sub Category:

Manual Consolidation

Product Group:

Expansion Index Test Apparatus

• Completely self-contained and compact design.
• Accurate to 0.0001” (0.002 mm).
• Testing time of 24 hours or less on cured soil specimens.

The Expansion Index Test Apparatus is a completely self-contained apparatus designed for use in determining the expansion index of soils. Using the new consolidation apparatus, contractors and laboratory technicians can conduct an expansion test on a cured soil specimen in 24 hours or less.

The apparatus is designed to control all of the variables that influence the expansive characteristics of a particular soil while still performing a practical test for general engineering use.

Test Time, hours 24
ASTM D4829 Yes
California UBC 29-2 Yes
Description Expansion Index Test Apparatus



Base and Collar Cast aluminum construction; brass hold-down rods.
Specimen Ring Stainless steel; 4” i.d. x 1” h. (101.6 x 25 .4 mm).
Porous Stones 4” diam. x 1/2” thick (101.4 x 12 .7 mm).
Loading Weight Brass; 12 .6 lbs. (5.7 kg).
Dial Indicator 0.3” range x 0.0001” graduations
Test Duration 24 hours or less on cured sample.
Dimensions 6” diam. x 11 ” h. (152 x 279 mm).
Weight Net 18 lbs. (8.2 kg).


Soil Volume Change Meter


Soil Volume Change Meter