Effective composites employing fast-nardening gypsum cement binders for additive manufacturing

Abstract

Currently, development and implementation of new technologies has come to the fore in every field of industrial production. Interest to additive manufacturing grows in Russia and abroad, including application of such technologies in architecture and construction, allowing production of forms and structures with previously unattainable forms and complexity layer-by-layer. To this end, the authors propose using a new generation of waterproof and frost-proof gypsum-based composite binders with fine-milled mineral additives of diverse genesis, including a unique additive previously unknown to be used in construction material science, namely mining waste from wet magnetic separation of jaspilite, which significantly differs from traditional quartz raw material. Due to their specific composition and morphology, wet magnetic separation waste in gypsum cement mixtures gives a significant increase in strength (up to 30 MPa), water resistance (up to 0.8) and frost-proofness