Researchers from Nanyang Technological University (NTU) in Singapore have used fly ash, a residue from burnt coal, to create a 3D printable geopolymer mortar. The mixture also contains steel slag and various secret chemicals. Burning coal might not be the most planet-friendly way of generating power and heat, but many places around the world are […]
Source: The 3d printers sourcefrom The 3d printers source http://ift.tt/2eT3wOe
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