Rotten stone is an old-school powdered rubbing compound made from finely ground limestone. Finer than pumice powder, rotten stone can be used to achieve a glass-like high-gloss shine on lacquer or ...
A new study published in Scientific Reports shows that recycled concrete powder (RCP), clay brick powder (CBP), and volcanic pumice powder (VPP) can improve the strength and durability of geopolymer ...