California Bearing Ratio Apparatus

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MOQ : 1 Number

California Bearing Ratio Apparatus Specification

Surface Treatment
Paint Coated

Accuracy
1% of full scale

Power Source
Manual/AC Supply

Accessories Type
Moulds, penetration piston, annular weights, collar, spacer disc

Automation Grade
Manual

Control System
Hand operated or motorized (optional)

Technology
Manual/Mechanical Operation

Features
Corrosion-resistant finish, heavy-duty construction, interchangeable accessories

Machine Type
CBR Testing Machine

Operating Pressure
Up to 50 kN

Type
Soil Testing Equipment

Material
Mild Steel

Function
Determine the California Bearing Ratio (CBR) of soil in laboratory and field tests

Application
Road and pavement subgrade strength evaluation

Voltage
230V AC, 50 Hz (for motorized version)

California Bearing Ratio Apparatus Trade Information

Minimum Order Quantity
1 Number

Supply Ability
04 Per Month

Delivery Time
3-8 Week

About California Bearing Ratio Apparatus

California Bearing Ratio Apparatus

It is fabricated as per IS: 2720 (Part XVI). California Bearing Ratio Test Apparatus is used to determine the bearing capacity of soils quickly and efficiently. This apparatus is highly useful in determining the load carrying capacity in the field. It is a very useful Soil Testing Equipment and we are one of the major manufacturers and suppliers of this apparatus.

The Chief Components Of California Bearing Ratio Apparatus Are

Bench type single speed load frame of 50 kN capacity
Mild steel mould of 150mm dia. x 175mm height
2.6 kg & 4.89 kg mild steel rammer
2.5 kg annular & slotted weight
Aluminium tripod
Penetration piston
Brass perforated plate with stem and lock nut
Cutting collar and circular spacer disc with detachable handle.
Proving Ring of 10 kN capacity & Dial Gauge of 0.01 x 25mm

Versatile Soil Strength Testing

The CBR Testing Machine enables reliable measurement of subgrade soil strength for roads and pavements. It accommodates both manual and motorized operations, with an adjustable penetration rate of 1.25 mm/min for motorized models. Its heavy-duty construction ensures robust performance and long-term durability, even under frequent laboratory or on-site testing conditions.

Comprehensive Accessory Kit for Precision

Each apparatus comes complete with a full set of accessories needed for accurate soil evaluation. The kit includes a CBR mould, collar, spacer, base plate, cylindrical plunger, cutting collar, annular weights, and dial gauge. With these components, you can achieve standardized and repeatable test results in compliance with international test standards.

Safe and User-Friendly Operation

The motorized version incorporates overload protection to enhance user safety during testing procedures. The paint-coated mild steel body offers corrosion resistance, and easily interchangeable accessories allow seamless adaptation for different test setups. It is designed for straightforward operation and maintenance by laboratory technicians or field engineers.

FAQs of California Bearing Ratio Apparatus:

Q: How does the California Bearing Ratio Apparatus work for soil strength evaluation?

A: The CBR Apparatus measures the resistance of soil to penetration under controlled loading using a 50 mm plunger. By applying force up to 50 kN and recording deformation with a precise dial gauge, it determines the CBR value, indicating subgrade strength for road and pavement construction.

Q: What accessories are included with the CBR Testing Machine?

A: Standard accessories include a CBR mould, collar, spacer, base plate, cylindrical plunger, cutting collar, annular weights, dial gauge, and other essential components for conducting both laboratory and field CBR tests.

Q: When should the motorized version be used instead of the manual type?

A: The motorized model, equipped with a 1/4 HP single-phase motor and overload protection, is recommended for frequent, high-volume testing or when a consistent penetration rate is required, offering higher efficiency and repeatability over manual operation.

Q: Where can the CBR Apparatus be applied in road construction projects?

A: This equipment is suitable for use in laboratory testing facilities and field sites to evaluate the bearing capacity of subgrade soils, essential for designing roads, highways, pavements, and airport runways.

Q: What is the process for conducting a CBR test with this apparatus?

A: Prepare the soil sample using the supplied moulds, compact it to the required weight (approximately 4.5 kg), and assemble the test setup. Operate the machine manually or motorized, apply penetration, and record dial gauge readings to calculate the CBR value following relevant standards.

Q: How does the apparatus ensure user safety during operation?

A: The motorized version features overload protection to prevent excessive loads and equipment damage, while the robust construction and corrosion-resistant finish contribute to safer long-term use.

Q: What are the benefits of using this CBR Testing Machine for soil analysis?

A: Benefits include high accuracy (1% of full scale), interchangeable accessories for flexible testing setups, compliance with international standards (IS 2720 Part 16, ASTM D1883, BS 1377), and reliable performance for evaluating soil suitability in critical construction projects.

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