Oxacrete® Nossim allows clay-based concrete to be poured at a low water content and to gain enough early-age strength to remove the formwork, without the use of cement. The addition of 3 – 6 wt% of the admixture Oxacrete® Nossim results in a compressive strength > 2 MPa, and to a fast early-age strength development. It is thus recommended for applications where formworks have to be removed fast, or where cast elements are tall.

Oxara technology based Cleancrete is a sustainable and resource-saving alternative to cement-based concrete, in applications where high compressive strength is not required. It is made with excavation material that contains a certain clay proportion and a smooth grading curve of sand and gravel. Also called poured earth, it can be prepared and implemented on-site using conventional equipment of the concrete industry.


Oxacrete® Nossim is a blend of mineral powders developed by Oxara AG in Switzerland. It consists of a dispersant and a coagulant. The dispersant allows to deflocculate and re-arrange clay particles in the earth while the coagulant allows the agglomeration and the hardening of the clayey materials through a pozzolanic process.


  • cement-free
  • high circularity
  • earth-based
  • up to 90% CO2 reduction compared to conventional cement based concrete
  • low energy intensity


  • Internal non-load bearing walls
  • Screed
  • Timber-earth slab
  • Furniture
  • Cast blocks

Oxara Cleancrete - as colourful as our Earth