HySSIL is a new generation high strength, structural, insulative, light weight concrete building product developed under collaborative research agreements involving Australia’s CSIRO and private industry group, HySSIL.

The product was developed under collaborative research agreements involving Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO) and private industry group, HySSIL. The CSIRO commenced research into high-strength, lightweight concrete in the late 1990s to fill the gap left by ‘traditional concrete’ and ‘autoclaved aerate concrete’ (AAC), traditional concrete being heavy and AAC being non-structural. The HySSIL technology provides a product that is structural and lightweight.

The first stage of the HySSIL development has been in the manufacture of walling panels and associated systems. Subsequent development will be in the form of blocks and flooring systems. HySSIL can be used where traditional precast concrete has been used in the past in residential housing, light industrial and commercial construction. It is a cellular cementitious product which is around half the weight of traditional concrete and for all intensive purposes, looks and feels like traditional concrete.

Densities ranging from 1,000 kg per m3 to 1,500 kg per m3 (compared to traditional concrete of 2,500 kg per m3), combined with compressive strengths of 10 MPa to 25 MPa, ensures the HySSIL is a suitable alternative to traditional concrete. A key benefit of the HySSIL panels is the densified layer which is achieved on both the top and bottom surface of the panel — this layer contributes to the strength and overall surface finish of the panel.

HySSIL can be used in both external and internal applications and can be produced in either load bearing or non-load bearing elements. It has been developed to substitute conventional methods of construction, such as brick veneer, solid brick, masonry block work and conventional precast concrete.