A california company has received a $743,000 grant from the National Science Foundation to make concrete blocks without cement.

The goal of the project is to reduce greenhouse gas emissions and Napa, Calif.-based Watershed Materials is already reportedly half way there, literally. Watershed Materials has already developed a concrete block that uses half the amount of cement in a regular block. According to a report in The Press Democrat:

Already, in an earlier grant phase, the company demonstrated the scientific feasibility of its proposal and produced a masonry block made with only half the regular amount of cement.

Under the grant, the company now seeks to develop both the cement-less blocks and the machinery needed to mass produce them.

“Cement is a really, really good glue,” said Watershed President David Easton. “But what we’ve discovered is it’s expensive and hard on the environment.”

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