A process has been developed to modify the colour of natural sandstone through thermal treatments under controlled atmospheres (O₂, N₂, CO₂), without additives. The method produces stable colour variations while preserving the natural character of the material. In some conditions, mechanical properties are also improved. The technology is mainly aimed at construction applications.
The technology has been developed by a research group from the Universidad de Burgos specialised in advanced materials.
Current problem:
Sandstone colour is limited by its geological origin, restricting architectural design flexibility. Existing solutions rely on coatings or additives, which may affect durability or alter the natural character. Current thermal studies focus on mechanical behaviour rather than controlled colour modification.
Proposed solution:
The developed process enables controlled colour modification of sandstone through thermal treatments under specific gas atmospheres (O₂, N₂, CO₂). No additives are required, the natural nature of the material is preserved, and reproducible colour variations are obtained, with additional improvements in mechanical properties under certain conditions.
Applications
Application fields:
New and innovative aspects
Main advantages of its use
Specifications
Desired business relationship
Commercial Agreement, License Agreement, Technical Cooperation: further development; Technical Cooperation: testing new applications; Technical Cooperation: adaptation to specific needs.
Expected role of the partner:
Type and size of partner
Type of Partnership
The aim of the Technology Transfer Office (TTO) of the Universidad de Burgos is to promote Innovative technology through the research results transfer and the connections between the University and the new needs and requirements of society - we are the link between the University and the Industry. Contact person: José Manuel López (jmllopez@ubu.es)
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