AZA 0851 SOIL CONE PENETROMETER

Description

Soil Cone Penetrometer AZA 0851 is a highly accurate and durable instrument designed to determine the liquid limit of cohesive soils by the cone penetration method. This test is vital in classifying fine-grained soils and understanding their consistency, plasticity, and behavior under varying moisture conditions.UTEST+2AZALAB+2NL Scientific+2

Developed to conform to international testing standards such as IS: 2720 (Part 5) and ASTM D4318, the AZA 0851 penetrometer is an essential component in any geotechnical or civil engineering laboratory. It ensures consistent, reproducible measurements of liquid limit with minimal operator error. AZALAB+1UTEST+1UTEST+1AZALAB+1

AZA 0851 Soil Cone Penetrometer – Precision Soil Classification Tool

The cone penetration method has proven advantages over the traditional Casagrande method, particularly for soils with low plasticity. The AZA 0851 unit is engineered to deliver fast, accurate results by measuring the depth of penetration of a standardized cone under its own weight (usually 76g total) into a soil paste.

This method defines the liquid limit as the water content at which the cone penetrates 20 mm into the soil sample in 5 seconds.

Key Features and Benefits

• Standards Compliance: Designed as per IS 2720 (Part 5) and ASTM D4318.

• Precision Penetration Depth Measurement: Easy-to-read scale provides penetration depth accuracy to the nearest millimeter.

• Heavy-Duty Construction: The base and frame are made from corrosion-resistant materials ensuring long life.

• Interchangeable Cones: Comes with a hardened stainless-steel cone of standard dimensions (30° angle, 35 mm length).

• Ease of Use: Smooth mechanism allows cone to be released and lowered with minimal friction for accurate readings.

Typical Components

1. Main Frame Assembly – Vertical frame supporting the cone apparatus with scale.

2. Penetration Cone – 76 g total weight (cone + plunger) stainless steel cone with 30° apex angle.

3. Graduated Scale or Dial Gauge – For precise measurement of cone penetration depth.

4. Sample Cup or Holder – For holding soil paste under the cone.

5. Release Mechanism – Ensures free-fall of cone under its own weight.

Specifications

Applications

• Geotechnical Investigations: Accurately determine liquid limit to classify soil consistency.

• Civil Engineering Labs: Used in foundation, roadbed, and embankment design.

• Construction Quality Control: Ensures soil used in construction meets design criteria.

• Academic & Research Use: Reliable tool for teaching soil mechanics and testing standards.

Working Principle

1. Soil paste is placed in a sample cup below the cone.

2. The cone is carefully lowered to just touch the surface.

3. The cone is released and allowed to penetrate the soil for 5 seconds.

4. The penetration depth is recorded, and the test is repeated at varying moisture levels to find the liquid limit where the cone penetrates exactly 20 mm.

🔹 FAQs

Q1: What is the purpose of the Soil Cone Penetrometer?
A1: It measures the liquid limit of soil — the water content at which soil changes from plastic to liquid state.

Q2: How accurate is the AZA 0851 model?
A2: It offers precision up to 1 mm in penetration depth and conforms to industry testing standards.

Q3: Can this be used for all types of soil?
A3: It is best suited for fine-grained cohesive soils, particularly where traditional Casagrande methods are less effective.

Q4: What is the standard cone size?
A4: 30° cone angle with 35 mm length and total weight of 76 g (cone + shaft).

Q5: Is calibration required?
A5: Minimal maintenance required; occasional verification of cone weight and scale is sufficient.