Exeter team of researchers have developed a new technique that incorporates graphene into traditional concrete production, to make more than twice as strong and four times more water resistant than existing concretes.
“The new graphene-reinforced concrete material also drastically reduced the carbon footprint of conventional concrete production methods, making it more sustainable and environmentally friendly. …
All of the concrete samples tested have reportedly met British and European standards for construction. The research team states that the new technique could pave the way for other nano-materials to be incorporated into concrete, and so further modernize the construction industry worldwide.
In this new study, the research team has created a new technique that centers on suspending atomically thin graphene in water with high yield and no defects, low cost and compatible with modern, large scale manufacturing requirements.
When tested, the graphene-enhanced concrete was found to have a 146% increase in compressive strength as compared to regular concrete, a 79.5% increase in flexural strength, and a decrease in water permeability of almost 400%. Additionally, the inclusion of graphene in the concrete reportedly allows for a reduction of about 50% of other materials used, including cement. The scientists state that this factor should result in a 446 kg/tonne reduction in emitted CO2.”