Lightweight backfill
Stabilise your structures on compressible soils and wet areas
The Nidaplast RA honeycomb blocks provide an innovative solution for building lightweight embankments on compressible soils, wetlands, or engineering structures.
Made of a rigid, water-resistant honeycomb structure, they are up to 50 times lighter than traditional fill materials while maintaining excellent mechanical stability.
Unlike expanded polystyrene fills, Nidaplast RA is fully resistant to water, groundwater rise and variable hydric conditions, ensuring long-term structural durability.
A durable, high-performance and easy-to-install solution for roadworks, rail infrastructure, urban development and landscaping projects.
Our products for lightweight embankments
Nidaplast RA
Nidaplast RA lightweight embankments are extremely light and resistant. These honeycomb structures are the recommended solution for constructing landscape embankments, road embankments, or building embankments.
Nidastyrène RA
The Nidastyrène RA blocks made of expanded polystyrene, in large dimensions (1200 × 3000 mm), are highly resistant and suitable for large-scale construction volumes.
Product comparison table
Product
Dry density (kg/m³)
Maximum embankment height
Nidaplast RA 400
35
45 kPa
2.30 m
View product sheet
Nidaplast RA 500
40
65 kPa
3.30 m
View product sheet
Nidaplast RA 600
45
85 kPa
4.30 m
View product sheet
Réalisations associées
Voir toutes nos réalisations
17 Nov. 2025
17 Nov. 2025
17 Nov. 2025
Key benefits
Extreme lightness
Up to 50 times lighter than traditional backfill.
Water resistance
Honeycomb structure unaffected by groundwater or fluctuating hydric conditions.
Versatile applications
Suitable for road infrastructure, wetlands, engineered landscapes and technical embankments.
Frequently asked questions
When should Nidaplast RA be used?
Nidaplast RA is ideal wherever traditional fill is too heavy:
compressible soils, wetlands, engineering structures, existing buildings, ramps or sloped accesses.
It reduces settlement and limits loads on supporting structures.
Is Nidaplast RA resistant to water?
Yes. Unlike polystyrene solutions, Nidaplast RA is fully water-resistant.
Its honeycomb structure tolerates groundwater rise without compromising the stability of the embankment.
What is the service life of a honeycomb lightweight fill?
Polypropylene blocks offer excellent long-term durability, with no deformation or performance loss.
They retain their mechanical properties for several decades, even in permanently humid or buried conditions.
Is lightweight fill compatible with heavy traffic?
Yes. Once covered with the appropriate structural layers, Nidaplast RA supports road loads and vehicle traffic.
It can be integrated into pavements, ramps, platforms and technical structures.
Interested in becoming a distributor?
Become a distributor of Nidaplast RA, the leading French solution for lightweight and technical embankments.
Our teams support you with feasibility studies, layout optimisation and project sizing.
We offer personalised technical and commercial assistance, as well as mixed orders tailored to your needs.
Offer your clients durable lightweight solutions, compatible with wetlands and demanding geotechnical constraints.
At a glance
Proven technical solutions
Our products are developed to meet real on-site requirements: performance, reliability and durability are at the core of every solution.
Committed to reducing environmental impact
At Nidaplast, we design recyclable products that incorporate recycled materials and are manufactured through a controlled industrial process with a low carbon footprint.
Tailored support
Whether technical experts, design-office engineers or sales teams, we support professionals throughout their projects, both nationally and internationally.