Oxacrete

Product Description

Oxacrete is a mineral-based chemical and non-toxic additive made by Oxara, a Swiss-based start-up, which can be mixed with excavation waste and/or sludge to produce cement-free concrete. Oxacrete can improve the workability of the earth mixture for processing and casting, which can be 1-3 days. As of October 2019, Oxara AG incorporated and looking for business developers, industry partners, and customers. The proof of concepts was implemented in Rwanda and Portugal and an industrial demonstration was adopted by a Swiss recycling company, Kibag.

Distributors / Implementing Organizations

Kibag

Manufacturing/Building Method

Oxacrete is mixed with excavation materials and/or sludge in conventional concrete infrastructure to produce cement-free concrete, which has been found to reduce carbon dioxide emission by 90% compared to conventional concrete.

Intellectural Property Type

Trademarked

User Provision Model

Oxara is for business developers, industry partners and customers.

Distributions to Date Status

Industrial demonstration adopted by a Swiss recycling company, Kibag. The proof of concepts were implemented in Rwanda and Portugal.

Design Specifications

Excavation earth materials are mixed with Oxara's patented geopolymer to form bricks using standard brick making machines.

Technical Support

Unknown

Replacement Components

None

Lifecycle

100+ years

Manufacturer Specified Performance Parameters

90% CO₂ reduction and cost reduction compared to conventional concrete. It improves workability improves the workability of the earth mixture for easier processing and casting, then accelerates the hardening in order to remove the formwork after 1-3 days.

Vetted Performance Status

Unknown

Safety

No known safety hazards are related to this product.

Complementary Technical Systems

Standard brick production machine

Academic Research and References

Minas, C., Carpenter, J., Freitag, J., Landrou, G., Tervoort, E., Habert, G. and Studart, A.R., 2019, Foaming of recyclable clays into energy-efficient low-cost thermal insulators, ACS Sustainable Chemistry & Engineering, 7(18), pp.15597-15606

Landrou, G., Brumaud, C., Plötze, M.L., Winnefeld, F. and Habert, G., 2018, A fresh look at dense clay paste: Deflocculation and thixotropy mechanisms, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 539, pp.252-260.

Compliance with regulations

Unknown

Other Information

A cement-free concrete invented in Zurich by Oxara Oxara AG - Winner W.A. de Vigier Award 2020 oxara - Sustainable concrete Live on air interviews with Start-ups Sevensense Robotics, Oxara and Membrasenz