WMM Plant

Product Description

What is a WMM Plant?

A WMM Plant (Wet Mix Macadam Plant) is used to produce a homogeneous mixture of aggregates, water, and binding materials like stone dust or cement, which is then laid on roads as a base or sub-base layer. The plant is highly efficient, ensuring uniform mixing for stronger road foundations.

Purpose of WMM Layer in Road Construction

• Provides a strong structural base for the upper layers of flexible pavement (Bituminous layers).

• Offers better load-bearing capacity than traditional water-bound macadam (WBM).

• Reduces dust pollution due to wet mixing.

• Provides better compaction and stability.

Main Components of a WMM Plant

1. Cold Aggregate Feeder Bins

   • Multiple bins for storing different sizes of aggregates.

   • Aggregates are fed in controlled quantities via variable-speed motors.

2. Conveyor System

   • Transfers aggregates from bins to the pugmill mixer.

   • Equipped with belt weighing system for proportion control.

3. Pugmill Mixer (Mixing Unit)

   • Core mixing unit where aggregates, water, and additives are thoroughly mixed.

   • Twin shaft design ensures quick and uniform mixing.

4. Water Tank and Water Pump

   • Stores and supplies water to the pugmill.

   • Flow is controlled for precise water addition.

5. Additive (Cement/Filler) Feeder (Optional)

   • Used to add binding materials like cement, lime, or stone dust.

   • Ensures proper binding and strength.

6. Storage Silo / Discharge Conveyor

   • Mixed material is either stored temporarily or directly loaded into dumpers.

   • Hydraulic discharge gate controls flow.

7. Control Panel / Cabin

   • Fully automatic or semi-automatic operation.

   • Monitors proportions, mixing time, water flow, and output rate.

Working Process of WMM Plant

1. Aggregates of various sizes are loaded into separate bins.

2. They are conveyed, weighed, and fed into the pugmill mixer.

3. Water and optional additives (cement, lime) are added.

4. The materials are thoroughly mixed in the pugmill.

5. The ready wet mix is discharged into trucks or stockpiled.

Capacity Range

• Typical Capacities:

  • 100 TPH (tons per hour)

  • 150 TPH

  • 200 TPH

  • 250 TPH

Advantages of WMM Plant

• High production capacity with consistent output.

• Accurate proportioning of materials.

• Homogeneous mixing due to pugmill design.

• Dust-free operation, environmentally friendly.

• Fast installation and easy maintenance.

• Suitable for all weather conditions.