Gob hopper
- Available on
- RWMM-120, 160, 200
- Holding capacity
- 1.5 to 2 ton
- Discharge height
- 3.2 m
- Best when
- Tippers queue steadily and the plant output matches hauling
ROAD PLANTS · RWMM SERIES
Wet Mix Macadam Plant (RWMM Series)
A road is only as good as the layer under the asphalt. The RWMM plant mixes graded aggregate and water continuously in a heavy-duty pugmill, so every truck that leaves carries the same uniform base material.
- 120 to 300 TPH
- Continuous pugmill
- Gob hopper or storage silo
- CTAB option
- Models
- RWMM-120 to RWMM-300
- Pugmill arms
- 18 to 34
- Materials
- WMM · GSB · ABC · CTAB
OVERVIEW
What Is a Wet Mix Macadam Plant?
Wet mix macadam (WMM) is a blend of graded crushed aggregates and water used for the base and sub-base layers of roads, below the bituminous surface. A WMM plant weighs the aggregates, adds water at a controlled rate and mixes them in a pugmill, so the material reaches site at the right moisture for compaction.
Rockmix RWMM plants produce homogeneous WMM, ABC, GSB and blanketing material for road and railway projects.
KEY FEATURES
Inside a Rockmix RWMM Plant
Continuous mixing plant
Material flows non-stop from feeder to discharge.
Heavy-duty four-bin feeder
20 to 40 m³ bin capacity, with a vibrator motor on the fine aggregate bin to keep sand flowing.
Heavy-duty oval pugmill
Twin shafts with 18 to 34 mixing arms give a uniform, homogeneous mix.
Two discharge variants
Gob hopper or 25-ton storage silo (25 or 50 ton on the 250 and 300 TPH models).
Hydraulic power pack
Operates the hopper and silo gates.
Cement addition option
The CTAB system adds cement for cement-treated base.
Low wear and tear
Wear parts go through stringent quality checks and wear tests.
Lower power use
Heavy-duty build with modest connected loads for the output.
HOW IT WORKS
From Aggregate Bins to Truck
Elevation, RWMM Series
- Four-bin feeder
- Gathering belt
- Pugmill
- Load-out conveyor
- Silo / gob hopper
- 01
A loader fills the four bins with different aggregate sizes and sand.
- 02
Belt feeders draw each material in the right ratio onto the gathering belt conveyor.
- 03
The gathering belt carries the blend to the pugmill.
- 04
Water is pumped in at a controlled rate; with CTAB, cement is added by rotary valve.
- 05
The twin-shaft pugmill mixes the material continuously.
- 06
The load-out conveyor lifts the mix into the gob hopper or storage silo.
- 07
Tippers load from the hopper or silo and carry the mix to the paver.
SPECIFICATIONS
RWMM Series Technical Specifications
| SPECIFICATION | RWMM-120 | RWMM-160 | RWMM-200 | RWMM-250 | RWMM-300 |
|---|---|---|---|---|---|
| Capacity (TPH) | 120 | 160 | 200 | 250 | 300 |
| FOUR-BIN FEEDER | |||||
| Bin capacity (m³) | 20 | 24 | 30 | 38 | 40 |
| Bin loading height (mm) | 2,500 | 2,600 | 2,900 | 3,200 | 3,400 |
| Vibrator motor, fine aggregate bin | Yes | Yes | Yes | Yes | Yes |
| PUGMILL UNIT | |||||
| Pugmill arms | 18 | 22 | 26 | 30 | 34 |
| Water pump (HP) | 1 | 2 | 3 | 3 | 3 |
| Gathering belt conveyor (mm) | 600 | 600 | 800 | 800 | 900 |
| Load-out conveyor (mm) | 600 | 600 | 800 | 800 | 900 |
| DISCHARGE | |||||
| Gob hopper capacity (ton) | 1.5 | 1.5 | 2 | Not offered | Not offered |
| Storage silo, optional (ton) | 25 | 25 | 25 | 25 or 50 | 25 or 50 |
| Cabin L × W × H (m) | 1.6 × 1.6 × 2.1 | 1.6 × 1.6 × 2.1 | 1.6 × 1.6 × 2.1 | 2.5 × 2.1 × 2.1 | 2.5 × 2.1 × 2.1 |
| Discharge height, gob hopper (m) | 3.2 | 3.2 | 3.2 | Not offered | Not offered |
| Discharge height, storage silo (m) | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 |
| Hydraulic power pack (HP) | 2 | 2 | 3 | 3 | 3 |
| POWER | |||||
| Connected load with gob hopper (HP) | 44.2 | 51.6 | 62.1 | Not offered | Not offered |
| Connected load with storage silo (HP) | 46.2 | 51.6 | 62.1 | 82.1 | 115.5 |
Specifications may change as part of our continuous improvement.
GOB HOPPER OR SILO?
Choose Your Discharge Variant
Storage silo
- Available on
- All models
- Holding capacity
- 25 ton (25 or 50 ton on 250 and 300 TPH)
- Discharge height
- 3.6 m
- Best when
- You want a buffer so the pugmill keeps running while trucks change
OPTIONALCTAB SYSTEM
CTAB System for Cement-Treated Base
Cement Treated Aggregate Base (CTAB) is a base layer where a measured amount of cement is mixed into the aggregate for extra strength. Our optional CTAB unit adds cement to the RWMM plant without changing the main plant.
Integrated with the wet mix plant
Tuned for smooth, continuous operation.
Compact and modular
Saves space and installs easily next to the pugmill.
High-precision weighing
A rotary valve and load cell keep cement proportioning accurate.
Low maintenance
Keeps operating costs down.
APPLICATIONS
Where RWMM Plants Work
- National and state highway base and sub-base layers
- Expressways and industrial roads
- Railway formation and blanketing layers
- Airport and port pavements
- Any road project that specifies WMM, GSB, ABC or CTAB
Project spotlight
RWMM-200 Commissioned in Vizag
We installed and commissioned an RWMM-200 for a road project in Vizag, Andhra Pradesh. The plant runs at 200 TPH with a specially designed pugmill for continuous homogeneous mixing, a cement addition system and a 25-ton discharge storage silo.
- Model
- RWMM-200, 200 TPH
- Location
- Vizag, Andhra Pradesh
- Discharge
- 25-ton storage silo
- Add-on
- Cement addition system
FAQ
Wet Mix Macadam Plant: Common Questions
WBM (water bound macadam) is laid and watered in layers on site. WMM is premixed with water in a plant and laid in one go, which gives better compaction and a more uniform base.
WMM, ABC, GSB and blanketing material. With the CTAB option it also makes cement-treated base.
From 18 arms on the RWMM-120 to 34 arms on the RWMM-300.
These two high-output models come with a storage silo only, in 25 or 50 ton size, to hold enough material between tipper loads.
Match plant output to your paver speed and the number of tippers you can run. Share your daily target and haul distance and we will size the plant.
Get a WMM Plant Sized for Your Road Project
Send your project length, layer specification and daily target. We will suggest the RWMM model, discharge variant and whether you need CTAB.