RING AND BALL APPARATUS (ELECTRICAL) AZA0933

Description

Principle of Test – Ring & Ball Method

Bitumen does not exhibit a sharp melting point; instead, it softens progressively with temperature. The Ring & Ball method defines the softening point as the temperature at which a standard steel ball, placed on a bitumen specimen molded inside a brass ring, causes the softened material to drop 25 mm under standardized heating conditions.

In the AZA0933:

• Two bitumen specimens are prepared in brass rings

• Steel balls are placed on top of the specimens

• The assembly is immersed in a liquid bath (water or glycerin)

• The bath is heated at a controlled rate of 5°C/min

• The temperature at which the ball and softened bitumen fall is recorded as the softening point

The electrical heating system ensures strict compliance with the specified heating rate, eliminating operator-dependent variations.

Electrical Heating – Accuracy, Uniformity & Safety

The AZA0933 offers significant advantages over manual or flame-heated systems:

Key Electrical Features

• Precisely controlled heating rate (5.0 ± 0.5 °C/min)

• Digital temperature controller and display for real-time monitoring

• Integrated magnetic stirrer ensuring uniform bath temperature

• Elimination of open flame, significantly improving laboratory safety

• Improved repeatability and reproducibility of results

While heating is automated and controlled, ball drop observation remains manual, ensuring compliance with standard test procedures.

Standard Components Supplied

• Heat-resistant glass beaker (approx. 800 ml)

• Brass rings – 2 Nos. (standard dimensions)

• Steel balls – 2 Nos. (9.53 mm dia, 3.50 ± 0.05 g)

• Brass / metal ball guides

• Ring support assembly (brass or stainless steel)

• Integrated electrical heating unit

• Digital temperature controller

• Built-in magnetic stirrer with stirring bar

Standards Compliance

The AZA0933 Ring & Ball Apparatus (Electrical) is manufactured in accordance with major international standards:

• ASTM D36 – Softening Point of Bitumen (Ring & Ball)

• EN 1427 – Bitumen and bituminous binders

• AASHTO T53 – Softening Point of Bituminous Materials

• IP 58

• IS 1205

This ensures globally accepted, comparable, and specification-compliant results.

Applications

• Bitumen and asphalt quality control laboratories

• Highway and pavement engineering

• Asphalt mix design verification

• Academic and R&D institutions

• Government and contractor QC labs

Technical Specifications

Why Choose AZA0933?

• Accurate and standard-compliant softening point determination

• Electrically controlled heating for repeatable results

• Safer alternative to flame-based systems

• Integrated stirring for uniform temperature distribution

• Ideal for routine QC and research laboratories

Frequently Asked Questions (FAQ)

Q1: What is the main purpose of AZA0933?
To determine the softening point of bitumen and asphalt binders using electrically controlled heating.

Q2: How is AZA0933 better than a manual Ring & Ball apparatus?
It provides precise heating control, uniform temperature distribution, improved safety, and higher repeatability.

Q3: Is ball drop detection automatic?
No. Heating is automatic, but ball drop observation is manual as per standard methods.

Q4: What bath liquid is used?

• Water for softening points up to 80°C

• Glycerin for softening points above 80°C

Q5: Which industries use AZA0933?
Highway laboratories, asphalt plants, academic institutions, and civil engineering QC departments.