QBSI Wall Blocks are ideal for Retaining, Roof Support for underground tunnels and Beams for domestic building and Lift-well systems. HD Board 5mm to 20mm thickness and 1220 width x 2440 length. 20mm HD Board can be used for feature flooring and partitions, fire wall construction sequence for low-rise and high-rise to Engineers specification
Main characteristics: Dry bending strength is 7.5mpa. Bending strength under absorbed moisture is 7.5mpa. Bending strength can be increased up to 14mpa if required. Test results prove that after this material has been immersed in water for one month, it keeps its original shape without deformation or expansion and its dry-wet deforming ratio is 0%.