Browsing by Author "Boul, Peter J."

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    Cement-based direct ink for 3D printing of complex architected structures
    (2021-02-09) Rahman, Muhammad M.; Sajadi, Seyed Mohammad; Kumar, Ashok; Boul, Peter J.; Thaemlitz, Carl; Ajayan, Pulickel M.; Rice University; Saudi Arabian Oil Company, Dhahran (SA); United States Patent and Trademark Office
    Provide is a cement ink for a cement ink for 3D printing (which also includes additive manufacturing) of 3D cement structures and materials. The cement ink includes an American Petroleum Institute (API) Class G cement, a nano-clay, a superplasticizer, a hydroxyethyl cellulose, and a defoamer. The nano-clay may be hydrophilic bentonite. The superplasticizer may be a polycarboxylate ether. The defoamer may be 2-ethyl-1-hexanol. Processes for forming the cement ink and printing 3D cement structures using the cement ink are also provided.