AZA 0955 MIXER WITH HEATING JACKET

Description

The AZA 0955 Mixer with Heating Jacket from AZALAB is a specialized laboratory apparatus designed for the precise and uniform mixing of materials that require elevated and controlled temperatures during the blending process. This mixer is particularly indispensable in the field of civil engineering, especially for preparing bituminous mixes such as hot mix asphalt (HMA) for various performance and volumetric tests. By maintaining the material at a consistent, specified temperature, the AZA 0955 ensures that the viscosity of the binder remains optimal, facilitating thorough coating of aggregates and producing homogeneous samples critical for accurate and reproducible test results.

At the core of the AZA 0955’s functionality is its integrated heating jacket and efficient mixing mechanism. The mixing bowl, typically made of high-grade stainless steel, is surrounded by an electrical heating jacket that provides uniform warmth, controlled by a high-precision digital temperature controller. This ensures that the entire batch of material, including aggregates and binder, is maintained at the desired mixing temperature (e.g., $150^\\circ\\text{C}$ to $170^\\circ\\text{C}$ for HMA, or as per specific mix design requirements). The mixing action is usually achieved through a robust motor-driven planetary or paddle mixer, which ensures comprehensive blending of all components, mimicking the action of full-scale asphalt plants in a laboratory setting. This meticulous control over temperature and mixing quality is paramount for preparing samples for tests like Marshall stability, gyratory compaction, and asphalt content determination, directly impacting the quality control of road construction materials. Reference to specifications from the Ministry of Road Transport & Highways (MoRTH) in India, particularly for Hot Mix Asphalt (HMA) production, highlights the importance of precise mixing temperatures.

Key Features and Applications of the AZA 0955 Heated Lab Mixer

The AZA 0955 Mixer with Heating Jacket is constructed with durability and operational precision in mind, suited for continuous use in demanding laboratory environments. The heated bowl and mixing elements are engineered to withstand high temperatures and abrasive materials. The digital temperature controller provides accurate setpoint programming and real-time temperature monitoring, ensuring consistency between batches. Many models include variable speed control for the mixing paddle, allowing operators to adjust the mixing intensity based on the material’s viscosity and desired homogeneity. Safety features such as thermal cut-offs and protective guards are often integrated to ensure safe operation.

The significance of the AZA 0955 Heated Lab Mixer extends directly to the accuracy and reliability of asphalt mix design and quality control:

• Accurate Mix Design: Essential for preparing representative asphalt mix samples in the laboratory, allowing engineers to determine the optimum binder content and aggregate gradation for specific pavement applications.
• Quality Control in Production: Helps ensure that the laboratory-prepared samples for quality control tests (e.g., density, voids analysis) accurately reflect the properties of the mix being produced in an asphalt plant.
• Reproducibility of Results: Consistent heating and mixing minimize variations between samples, leading to more reliable and reproducible test results for research and acceptance testing.
• Versatility: While primarily used for bituminous materials, it can also be adapted for mixing other temperature-sensitive or viscous materials in various material science and chemical engineering applications. For comprehensive guidelines on asphalt mix design and testing procedures in India, the Indian Roads Congress (IRC) publishes a wealth of information, which implicitly relies on precisely prepared mixes.

Operating the AZA 0955 involves preheating the aggregates and binder to the specified temperatures, adding them to the pre-heated mixing bowl, and initiating the mixing cycle. The temperature controller continuously monitors and maintains the set temperature throughout the mixing process. Routine maintenance includes thorough cleaning of the mixing bowl and paddle after each use, and periodic verification of the temperature controller’s accuracy.

In conclusion, the AZA 0955 Mixer with Heating Jacket from AZALAB is an indispensable piece of equipment for any civil engineering laboratory, asphalt producer, or research institution focused on asphalt pavement design and quality control. Its ability to provide precisely controlled, heated, and homogeneous mixing is fundamental to preparing reliable samples, thereby contributing significantly to the construction of durable and high-performing road infrastructure.

Specifications

• Model Number: AZA 0955
• Type: Laboratory Mixer with Heating Jacket
• Application: Mixing bituminous materials (asphalt, bitumen) with aggregates, and other heated/viscous materials.
• Mixing Capacity: Typically 5-10 liters or 10-20 kg (specific capacity varies by model variant).
• Mixing Bowl Material: High-grade Stainless Steel (SS 304 or SS 316).
• Heating System: Integrated electrical heating jacket.
• Temperature Range: Ambient to $200^\\circ\\text{C}$ or $250^\\circ\\text{C}$ (adjustable and thermostatically controlled).
• Temperature Control: Digital PID microprocessor-based temperature controller, ensuring $\\pm 2^\\circ\\text{C}$ accuracy or better.
• Mixing Action: Planetary or Paddle type mixing action for thorough blending.
• Motor: Robust electric motor (e.g., 0.5 HP, 1.0 HP).
• Mixing Speed: Fixed or variable speed control (RPM options).
• Safety Features: Over-temperature protection, thermal cut-off, motor overload protection.
• Power Supply: 230V AC, 50 Hz, Single Phase (confirm exact voltage/phase requirements for your region).
• Dimensions & Weight: Varies depending on capacity and specific design.
• Accessories: Includes mixing bowl, mixing paddle/beater.

FREQUENTLY ASKED QUESTIONS (FAQ)

Q1: What is the primary purpose of the AZA 0955 Mixer with Heating Jacket? A1: The AZA 0955 Mixer with Heating Jacket is designed for the precise and homogeneous mixing of materials, particularly bituminous mixes like hot mix asphalt, by maintaining a controlled elevated temperature throughout the mixing process.

Q2: Why is a heating jacket important for mixing asphalt? A2: A heating jacket ensures that the asphalt binder and aggregates are maintained at the optimum mixing temperature. This reduces the binder’s viscosity, allowing it to thoroughly coat the aggregates and preventing stiffening, which is crucial for producing a homogeneous and workable mix.

Q3: What types of materials can be mixed in the AZA 0955? A3: While primarily designed for asphalt and bituminous mixes, the Heated Lab Mixer can be used for other materials requiring controlled temperature mixing, such as certain polymers, resins, or viscous chemical compounds.

Q4: What kind of temperature control does the AZA 0955 offer? A4: The AZA 0955 typically features a digital PID temperature controller, offering precise setpoint programming and stable temperature maintenance within the heated mixing bowl.

Q5: How does this mixer contribute to asphalt mix design and quality control? A5: By providing perfectly mixed and temperature-controlled samples, the Mixer with Heating Jacket ensures that subsequent tests (e.g., Marshall stability, density, void analysis) yield accurate and reproducible results, which are vital for designing durable pavements and maintaining production quality.

Q6: What kind of maintenance is required for the AZA 0955? A6: Regular maintenance involves thoroughly cleaning the mixing bowl and paddle after each use (while still warm, for easier removal of bituminous material), inspecting the heating elements, and periodically verifying the accuracy of the temperature controller.