This Eco-friendly Concrete Uses Biochar

Apr 19, 2023

The biochar was able to suck up to 23 percent of its weight in carbon dioxide from the air.

Washington State University (WSU) researchers have engineered a carbon-negative, environmentally friendlconcrete that is nearly as strong as regular concrete by infusing regular cement with biochar, a type of charcoal made from organic waste.

The biochar was able to suck up to 23 percent of its weight in carbon dioxide from the air while still achieving a strength comparable to ordinary cement.

“We’re very excited that this will contribute to the mission of zero-carbon built environment,” said Xianming Shi, professor in the WSU Department of Civil and Environmental Engineering and the corresponding author on the paper.

More than 4 billion tons of concrete are produced every year globally and cement production is thought to be responsible for about 8 percent of total carbon emissions by human activities worldwide.

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