Mechanical Stabilization Plant-Pug Mill

What is a Mechanical Stabilization Plant?

Polygonmach pug mill, also known as a pugmill mixer, is a machine in which materials are simultaneously ground and mixed with a liquid. Industrial applications are found in pottery, bricks, cement and some parts of the concrete and asphalt mixing processes. A pugmill may be a fast continuous mixer. Polygonmach continuous pugmill can achieve a thoroughly mixed, homogeneous mixture in a few seconds, and the right machines can be matched to the right application by taking into account the factors of agitation, drive assembly, inlet discharge, construction, and the specific requirements of the mixing and de-airing in the mixer.

Applications and Working

Mechanical stabilization plants find extensive applications in road construction, highway projects, airport runways, and soil stabilization initiatives. The plant's operation involves blending soil with binding agents such as lime, cement, or foamed bitumen to enhance its properties. This process aims to improve the soil's strength, durability, and load-bearing capacity, making it suitable for a wide range of geotechnical applications, including stabilizing road bases, subgrades, and embankments.

Key Features and Materials

The mechanical stabilization plant is equipped with essential features such as precise mixing mechanisms, efficient distribution systems for binders, advanced control panels, and robust construction for durability. The primary materials used in these plants include lime, cement, foamed bitumen, and other additives serving as binders. These materials play a pivotal role in altering the soil's characteristics, imparting strength and stability necessary for construction applications.

Components and High-Performance Design

The plant comprises critical components like aggregate feeders, conveyor belts, mixing units, control systems, and storage tanks for binders. Achieving high performance and capacity is intrinsic to the plant's design, which focuses on advanced mixing technology, effective binder distribution mechanisms, and a robust construction to ensure uniform mixing of soil and binders. The design is geared towards consistent and efficient production of stabilized soil with enhanced properties for construction projects.

Fuel Types, Emission Control, Capacity, and Types

Mechanical stabilization plants can operate using various fuel types such as diesel, natural gas, or electricity. Emission control measures are integrated to minimize environmental impact. The plant's capacity varies, with options ranging from small portable units to large stationary installations, catering to diverse project requirements and scales.

1. Feeding Hopper:

The feeding hopper is a critical component of a mechanical stabilization plant, serving as the initial point of material intake and storage. This essential element is designed to receive various raw materials such as soil, aggregates, and binders before they undergo the mixing and stabilization process. The feeding hopper ensures a controlled and steady supply of materials into the plant, allowing for efficient and precise handling of the different components that are essential for achieving the desired soil stabilization properties. It plays a vital role in the smooth and continuous operation of the plant by regulating the flow of materials and ensuring a consistent input into the subsequent stages of the stabilization process.

2. Conveyor Belt:

A conveyor belt is a key component within a mechanical stabilization plant, serving as the primary method for transporting materials throughout the facility. Equipped with a robust and durable construction, the conveyor belt efficiently moves various materials, including aggregates, binders, and processed soil, from one section of the plant to another. This continuous and automated material handling system ensures a seamless workflow by effectively transferring materials to different processing units within the plant. By providing a reliable and efficient transportation method, the conveyor belt plays a crucial role in optimizing the operational efficiency and productivity of the mechanical stabilization plant.

3. Storage Silo/Bunker:

The storage silo, also known as a storage bunker, is an integral part of a mechanical stabilization plant, serving as a storage facility for holding bulk quantities of materials such as aggregates, binders, and stabilized soil. Designed to provide ample storage capacity, the storage silo ensures that materials are adequately preserved and readily available for use in the stabilization process. By maintaining a controlled environment that protects the stored materials from external elements, such as moisture and contamination, the storage silo safeguards the quality and integrity of the components. This essential component of the plant allows for efficient material management and ensures a consistent supply of raw materials for seamless operations and optimal performance during soil stabilization processes.

4. Mixer:

The mixer is a critical component of a mechanical stabilization plant, responsible for blending and mixing the various materials, including soil, aggregates, and binders, to create a homogenous mixture with the desired properties. Equipped with advanced mixing mechanisms and precise controls, the mixer ensures thorough blending of the components to achieve uniformity and consistency in the stabilized soil mix. By combining the materials in the correct proportions and facilitating thorough mixing, the mixer plays a pivotal role in enhancing the strength, durability, and stability of the soil for diverse construction applications. Efficient mixing capabilities of the mixer contribute to the production of high-quality stabilized soil mixes that meet the specified requirements and standards, making it an indispensable component of the mechanical stabilization plant.

5. Automation System:

An automation system is an essential component of a mechanical stabilization plant, providing intelligent control and monitoring capabilities to streamline and optimize plant operations. This sophisticated system integrates various sensors, controllers, and software to automate and oversee critical processes within the plant. By incorporating advanced automation technology, the system enhances efficiency, accuracy, and reliability in material handling, mixing, and overall plant functionality.

The automation system is designed to regulate and control the entire stabilization process, from material intake and mixing to storage and distribution. It enables real-time monitoring of key operating parameters, such as material flow rates, ingredient proportions, and process temperatures, ensuring consistent and precise execution of plant operations. Through automated control algorithms and feedback mechanisms, the system can adjust process variables dynamically, maintaining optimal conditions and product quality throughout production.

One of the primary benefits of an automation system is its ability to enhance operational efficiency and productivity. By automating repetitive tasks and implementing optimized control strategies, the system reduces manual intervention, minimizes operator errors, and accelerates production cycles. This results in increased output capacity, improved process consistency, and reduced downtime, ultimately leading to higher overall plant performance and profitability.

Moreover, the automation system facilitates data acquisition and analysis, providing valuable insights into plant performance, energy consumption, material usage, and production trends. By collecting and analyzing operational data in real-time, plant managers can make informed decisions, identify bottlenecks, and implement process improvements to enhance overall efficiency and quality control. Additionally, the system enables remote monitoring and control, allowing operators to manage plant operations efficiently and respond promptly to any deviations or alarms.

Overall, an automation system is a critical component in modern mechanical stabilization plants, enabling enhanced process control, operational efficiency, and productivity. By leveraging advanced automation technology, these systems empower plants to achieve higher levels of performance, quality, and reliability in soil stabilization processes, contributing to sustainable and cost-effective construction practices.

6. Control Room:

The control room is the nerve center of a mechanical stabilization plant, serving as the central hub for monitoring, controlling, and coordinating plant operations. This dedicated space houses the control panels, monitoring devices, communication systems, and operator interfaces essential for overseeing and managing all aspects of the plant's functions. Equipped with advanced control systems and visualization tools, the control room provides operators with real-time insights and control capabilities to ensure optimal plant performance and efficiency.

Within the control room, operators can monitor and adjust various parameters, such as material flow rates, mixing ratios, equipment settings, and environmental conditions, to maintain operational stability and quality control. The control panels display critical process data, alarms, and feedback signals, enabling operators to make informed decisions and respond promptly to any deviations or issues during production. Through integrated control systems, operators can remotely manipulate plant equipment, regulate process parameters, and troubleshoot operational challenges to optimize plant performance.

The control room plays a crucial role in enabling effective communication and coordination among plant personnel, ensuring smooth workflow, efficient resource utilization, and timely decision-making. Operators stationed in the control room are responsible for supervising plant activities, enforcing safety protocols, and coordinating tasks to maximize productivity and maintain operational standards. By providing a centralized command center with comprehensive monitoring and control capabilities, the control room facilitates efficient plant management and execution of soil stabilization processes.

What is Cold / Wet Mix Plant?

Polygonmach Cold / Wet Mix Plant, designed for mechanical stabilization, cement stabilization and cold asphalt mixes, always runs smooth even on the toughest projects and never lets you down.

Diversification of plants with different capacities of the order of 200 to 800 t / h, in order to meet the different needs of road, rail and airport projects.

Fully controlled production of high quality mechanical stabilization, cement stabilization and cold asphalt mixtures.

Double shaft mixer specially designed for perfect mixing quality

The cold asphalt plants have been designed for various productions of homogeneous cold / wet mixtures with aggregates, water, cement, recovered asphalt, bitumen emulsion, bitumen foam.

Due to the standard production of the Polygon Mach mixer, its arms, paddles, body parts with bolted anti-wear components and wearing parts are very easy to replace and we can provide continuous support of the spare parts.

The dosing belt flow sensors automatically shut down the system when the aggregate feed is interrupted.

The capacity of the dosing belts, the ratio of cement, bitumen emulsion and bitumen foam in the mixture can be adjusted from the control booth via a frequency converter.

Fully automatic production control with optional PLC computer control system, which also allows storage and reporting of all production data.

The compact design fits into a 40ft Open Top container (factories with a capacity of 200 and 400 t / h) which allows for easy and economical transport.

Some of specifications of Polygonmach pug mill mixers as below: 

1. High-Quality Materials and Craftsmanship:

The machinery should be constructed from durable and robust materials that can withstand the rigorous demands of heavy industrial use. The overall build quality should demonstrate excellent craftsmanship, with careful attention to detail.

2. Efficiency:

Polygonmach pug mill plants demonstrate high levels of efficiency in its operations, ensuring a fast, uniform, and thorough mixing of materials. It should be energy-efficient as well.

3. Versatility:

Polygonmach pug mill plants are designed to handle a wide range of materials and applications. This means having adjustable settings to accommodate different types of materials and consistencies.

4. User-Friendly:

Polygonmach pug mill plants are easy to operate, with intuitive controls and a clear, understandable interface. Maintenance should be straightforward and not require significant downtime.

5. Safety:

Polygonmach pug mill plants  incorporate all necessary safety features to protect operators and other workers. This includes guards, emergency stop buttons, lock-out/tag-out capabilities, and other safety measures.

6. Low Maintenance:

Polygonmach pug mill plants are designed for minimal maintenance requirements. This means it should be built to resist common causes of wear and tear and have readily replaceable parts for when maintenance is necessary.

7. Innovation:

Polygonmach pug mill plants are incorporating the latest technology, such as advanced controls, automation, or machine learning, can enhance performance, reliability, and ease of use.

8. Environmental Sustainability:

Polygonmach pug mill plants are designed to minimize environmental impact, such as emissions or waste. This could involve energy-efficient operations, recyclable components, or features that reduce waste.

9. Excellent Customer Service:

Polygonmach pug mill plants are provides after-sales support, including maintenance, spare parts availability, and technical assistance. Polygonmach pug mill plants make feel customers that they can rely on your company for assistance when needed.

10. Competitive Pricing:

Even if the product is high quality, the pricing must still be competitive within the market. Polygonmach pug mill plants are offered excellent value for money will make the product more attractive to potential buyers.

11. Customization:

Polygonmach pug mill plants are Offering customizable solutions to meet the specific needs of our clients can set your pug mill mixer or mechanical stabilization plant apart from competitors.

Polygonmach pug mill plants, given their industrial size and weight, are typically transported via several methods, depending on their final destination and the specific logistics involved.


If the destination is accessible by land and within the same continent, trucking is a common method for transporting industrial machinery. The equipment is loaded onto flatbed trucks or trailers and securely fastened to prevent movement during transport.

 b. Shipping:

For international or overseas transport, shipping is typically used. The pug mill plant would be loaded into a shipping container and transported by cargo ship. In some cases, specialized shipping methods such as break bulk shipping or flat rack containers may be used for oversized or unusually shaped equipment.

  c. Rail:

In some cases, particularly for long-distance land transport across countries, rail transport may be used. This would involve loading the pug mill plant onto a flatcar or specialized rail car for transport.

In terms of types, Polygonmach pug mill plants can be broadly classified into two types: stationary and portable.

   1.Stationary Pug Mills:

These are large, fixed installations that are built at a specific site and aren't designed to be moved regularly. They often have higher capacities and are used in large-scale industrial applications.

   2. Portable Pug Mills:

These are designed to be more mobile and can be transported from site to site as required. They are typically smaller than stationary pug mills and are used in applications where flexibility is required, such as in construction or road repair projects.

The choice between a stationary and a portable pug mill plant depends on the specific needs of the project and the scale of operations.

Pioneer in Innovative Technology: Polygonmach

POLYGONMACH is a leading global manufacturer of concrete batchingplants, crushing screening plants, and asphalt plants. With TSE and ISO 9001 quality assurance certifications ans a commitment to innovation, quality, and customer satisfaction, we have established ourselves as a trusted name in the construction industry. Our extensive range of high-performance plants caters to the diverse needs of construction projects, ensuring efficiency, reliability, and durability.


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