Unconfined Compression Test Mold Pavement Material 150mm Seamless Steel

Product Features & Attributes
This unconfined compression test mold is used for specimen preparation in mix design and strength testing of stabilized inorganic binder soils (fine soil, medium soil, coarse soil) for pavement construction, and also for verifying whether pavement structural strength meets requirements. It is common molding equipment for highway engineering laboratories and quality inspection institutions.

Working Principle: The prepared stabilized inorganic binder soil is loaded into the mold in layers. Compaction tests determine the optimum moisture content and maximum dry density of the mixture, forming standard cylindrical specimens for unconfined compressive strength and other mechanical property testing.

Structural Features:

• Made of seamless steel pipe for uniform material and high strength

• 14mm wall thickness for stability and deformation resistance

• Smooth and flat inner surface for easy demolding

• Precise dimensions for standard specimen forming

Technical Parameters:

• Material: Seamless Steel Pipe

• Wall Thickness: 14mm

• Specimen Size: Φ150×150mm

Applicable Soil Types:

• Fine Soil: Up to 6 specimens per batch

• Medium Soil: Up to 3 specimens per batch

• Coarse Soil: 1 specimen per batch

Calibration Instruments (User Supplied):

• Steel ruler: Range 500mm, division 1mm

• Digital caliper: Range 300mm, division 0.01mm

• Depth caliper: Range 300mm, division 0.02mm

• Feeler gauge: Range 2mm, division 0.02mm

Calibration Method:

1. Measure mold height at 3 points

2. Check inner surface flatness with steel ruler and feeler gauge

3. Measure top and bottom inner diameters with digital caliper (2 points per direction)

Preparation Steps:

1. Take representative air-dried soil sample, crush with wooden hammer without damaging original particle size

2. Sieve and classify by soil type

3. Determine air-dried moisture content

4. Weigh dry soil for specimen (approx. 5~6kg for 150mm specimen)

5. Load into mold in layers, compact

6. Demold for strength testing

Available in different specifications: different specimen sizes (Φ150×150mm, Φ100×100mm, etc.) and different wall thicknesses (10mm, 14mm, 16mm, etc.) to suit various soil types and testing standards.

Mainly used in highway engineering laboratories, pavement material testing institutions, research universities, construction units, and more for specimen preparation in stabilized soil mix design and strength testing.