Expansion Index Test Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-SM-11919
Quick Answer: For finding how far a soil sample expands, the Expansion Index Test Apparatus seats a 101.6 x 25.4 mm stainless steel specimen ring in a cast aluminium base and collar. A 5.7 kg brass weight loads the sample while a dial indicator follows the change in height.
Last updated: October 2026
Key Features
Cast aluminium base and collar held by brass hold-down rods.
Stainless steel specimen ring, 101.6 x 25.4 mm (4 in internal diameter x 1 in high).
Porous stones of 101.4 x 12.7 mm (4 in diameter x 1/2 in thick).
Brass loading weight of 5.7 kg (12.6 lb).
Dial indicator with 0.3 in range x 0.0001 in graduations, or 8 mm range x 0.002 mm graduations.
Test runs 24 hours or less on the cured sample.
Technical Specifications
Specification
Value
Base and collar
Cast aluminium, brass hold-down rods
Specimen ring
Stainless steel, 101.6 x 25.4 mm (4 in ID x 1 in high)
Porous stones
101.4 x 12.7 mm (4 in dia. x 1/2 in thick)
Loading weight
Brass, 5.7 kg (12.6 lb)
Dial indicator
0.3 in x 0.0001 in, or 8 mm x 0.002 mm
Test duration
24 hours or less on the cured sample
About This Product
The cured specimen is confined in the ring with the porous stones, loaded with the brass weight and left while the dial indicator records any rise. Readings taken over a period of up to 24 hours give the expansion of the sample, and the indicator can be chosen with inch or metric graduations.
Frequently Asked Questions
What size is the specimen ring?
The stainless steel ring measures 101.6 x 25.4 mm, which is 4 in internal diameter by 1 in high.
How long does a test take?
The test duration is 24 hours or less on the cured sample.
Which dial indicator does it use?
Either a 0.3 in range indicator with 0.0001 in graduations or an 8 mm range indicator with 0.002 mm graduations.
