According to foreign media New Atlas, “magic material†graphene is a quasi-two-dimensional material with only one atomic layer thickness, and is the strongest man-made material in the world. Now scientists have used it to create a new type of concrete that is stronger, more waterproof, and more environmentally friendly than ever. To make this type of concrete, a team at the University of Exeter in the United Kingdom designed a technology to suspend graphene sheets in water and then mix the water with traditional concrete components such as cement and aggregate. It is reported that the process is inexpensive and meets modern mass production requirements.
After testing, the concrete with graphene added has a compressive strength of 146%, a flexural-tensile strength of 79.5%, and a water infiltration rate that is nearly 400% lower than that of ordinary concrete. This material complies with British and European building standards. Increased strength and water resistance should allow structures made with concrete to last longer. This means that they do not need to be replaced frequently - the production of cement used in concrete is the main source of carbon dioxide emissions.
In addition, it has been reported that the incorporation of graphene in concrete can reduce about 50% of other materials, including cement. Scientists said that this factor should lead to a reduction of 446 kilograms of carbon dioxide emissions per ton of concrete produced.
"Finding a more environmentally friendly way to build is an important step in reducing global carbon emissions, so we protect our environment as much as possible," said Dimitar Dimov, a doctoral student in charge of the study. “This is the first step, but it is a crucial step in the right direction to create a more sustainable construction industry for the future.â€
The paper on this research was recently published in the magazine Advanced Functional Materials.
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