The CBR (California Bearing Ratio) Test Apparatus Motorized Single Speed is a specialized piece of equipment used in geotechnical engineering to assess the strength and load-bearing capacity of soil and aggregate materials. This apparatus is essential for determining the suitability of materials for use in road construction and other civil engineering projects. Tests are carried out on natural or compacted soils in water soaked or un-soaked conditions and the results so obtained are compared with the curves of standard test to have an idea of the soil strength of the sub grade soil.

Laboratory CBR Apparatus meets the essential requirements of IS:2720 (Part XVI) with the mould as per of IS:9669. The field CBR Apparatus meets the requirements of IS:2720 (Part XXXI).

Key Features and Components:

1. Motorized Load Frame:

The apparatus is equipped with a motorized system that applies a controlled load to the soil sample at a consistent speed, typically at a rate of 1.25 mm/min. This ensures accurate and repeatable test results.

2. Loading Piston:

The loading piston is designed to penetrate the soil sample, simulating the pressure exerted by traffic loads. The depth of penetration is measured to calculate the CBR value.

3. Dial Gauge or Digital Readout:

The apparatus includes a dial gauge or digital display to measure the penetration of the piston into the soil. This measurement is crucial for calculating the CBR value.

4. Sample Preparation Mold:

The apparatus typically comes with a mold for preparing soil samples, which are compacted to a specified density and moisture content before testing.

5. Control Panel:

A user-friendly control panel allows operators to start and stop the test, monitor the load applied, and record data efficiently.

6. Safety Features:

The apparatus is designed with safety features to protect users during operation, including emergency stop buttons and protective covers.

• IS:9669
• IS: 2720 (Part XVI)
• BS 1377
• BS 1924
• ASTM D 1883

• Hand Operated Load Frame, capacity 5000 kg (50 KN).
• CBR Mould 150 mm base plate and collar inner dia x 175 mm high.
• Cutting collar.
• Perforated swell plate.
• Spacer disc.
• Metallic ring made of mild steel.
• Metal tripod aluminum.
• Penetration Piston Assembly.
• Proving ring 10 kN capacity.
• One surcharge weight, 2.5 kg, annular.
• One surcharge weight, 2.5 kg slotted.
• Dial gauge 0.01 x 25mm

• Hand Operated Load Frame, capacity 5000 kg (50 KN).
• CBR Mould 150 mm base plate and collar inner dia x 175 mm high.
• Cutting collar.
• Perforated swell plate.
• Spacer disc.
• Metallic ring made of mild steel.
• Metal tripod aluminum.
• Penetration Piston Assembly.
• Proving ring 10 kN capacity.
• One surcharge weight, 2.5 kg, annular.
• One surcharge weight, 2.5 kg slotted.
• Dial gauge 0.01 x 25mm