Researchers at Oregon State University have developed a quick-setting, environmentally friendly alternative to concrete they hope can one day be used to rapidly 3D print homes and infrastructure.

Also known as additive manufacturing, 3D printing is already being used to help solve construction challenges such as the global housing crisis that’s emerged as Earth’s population approaches 8.5 billion.

But cement, the binding agent in concrete, accounts for about 8% of the planet’s carbon dioxide emissions, and concrete’s curing time—which can be multiple days—and required structural supports can inhibit progress on construction projects.