Bardon Composite Pavements successfully completed a road sub-base project using Rapid International’s mobile continuous mixing plant.
Introduction
Bardon Composite Pavements, part of Aggregate Industries, used Rapid International’s RMX400C mobile continuous mixing plant to mix and lay a Hydraulically Bound Mixtures (HBM) sub-base for a road project in Ireland. The plant’s mobility and precision helped streamline the work on-site.
The Problem
The project required a reliable supply of HBM, a road sub-base material, using locally sourced aggregates. With a tight schedule and the need to keep mobilisation costs low, Bardon needed a mixing solution that could deliver high volumes efficiently while maintaining strict quality control.
What Work Was Carried Out
The RMX400C mobile plant was positioned on-site and used to produce up to 400 tonnes per hour of HBM material. The plant features automated weighing for aggregates, cement, and water, with precise tracking of the exact amounts used. A 1200mm weighing belt measures the aggregate feed while a rotary valve and weighed screw control cement dosing. Water flow is carefully monitored through a flow meter. A twin shaft pugmill mixer ensures thorough mixing, pushing the mix smoothly towards discharge. Its design includes a protective layer inside the mixing chamber to reduce wear.
One notable feature of the plant is its cleaning system. The mixer has hinged sides that open hydraulically for easy access to the interior and mixing paddles. A conveyor belt at the bottom carries waste materials away during cleaning, speeding up maintenance.
The Results
Using the mobile continuous plant allowed Bardon to complete the HBM mixing and laying ahead of schedule while reducing mobilisation expenses. The automated and detailed weighing system gave them confidence in the quality and consistency of the road sub-base. This helped maintain strict standards on the Longford Bypass project, which stretches about 3 kilometers in length.
Closing Note
Rapid International’s RMX400C offers an effective on-site solution for producing quality hydraulically bound mixtures, providing flexibility, efficiency, and easier maintenance for contractors working on demanding road projects.
