Hourdi Blocks (EPS Hourdi )

EPS Hourdi Blocks are lightweight hollow blocks manufactured from high-quality Expanded Polystyrene (EPS) and used within reinforced concrete ribbed slab and beam-and-block systems. They act as non-structural void formers that replace unnecessary concrete in the tension zone of slabs, allowing the creation of lighter, more efficient floor systems without compromising structural performance.

By reducing concrete volume and slab self-weight, EPS Hourdi Blocks enable optimized slab thickness, longer spans, and improved construction efficiency. In addition, their closed-cell structure provides inherent thermal and acoustic insulation, contributing to overall building comfort and energy efficiency.

EPS Hourdi Blocks remain permanently within the slab as lost formwork and lightweight filler.

A typical EPS Hourdi slab system consists of:

• • Primary and secondary concrete beams or ribs
  • EPS Hourdi blocks placed between the ribs
  • Reinforcement installed above ribs and blocks
  • Structural concrete topping forming the compression zone

EPS Hourdi Blocks are manufactured in controlled factory conditions and can be supplied in standard or project-specific dimensions, densities, and shapes to suit various slab depths and rib spacing.