Understanding the relationship between composition and rheology in alkali-activated binders

Abstract Based on the knowledge that exists today, it is generally accepted there are basic parameters and characteristics to obtain effective mixtures for their use in 3D printing. Rheological behavior setting time (initial final) those determine workability, as well speed nature of hardening molded pastes and, a result, final framework integrity resulted structure. Among promising options printing, literature often contains information alkali-activated binders. In this work, an binding system based electrometallurgical slag, citrogypsum, waste industrial production citric acid, was studied. Some rheological experimental binders were considered: mixture flow under action torsional loads initial times. It found joined both components “slag - water”: alkaline activator promotes transition character from thixotropic mixed: dilatant-thixotropic (for Na 2 SiO 3 activator) dilatant NaOH activator). addition activators citrogypsum separately cases helps reduce times 18 22 hours 1 hour 1.5 hours. Also, results have shown jointed components: cytogypsum, has synergistic effect time.