Ceramics-Silikáty 53 (1) 42-47 (2009)

THE EFFECT OF ADDITIVES ON THE PROPERTIES OF HIGH ALUMINA LOW-CEMENT SELF-FLOWING CASTABLES

S. Otroj, M. R. Nilforoushan, R. Marzban

In this paper, the effect of additives such as deflocculants and dispersants; on the properties of alumina low-cement selfflowing castables has been investigated. The flow and setting behavior, major physical and mechanical properties of thesecastables have been tested. Also, the microstructures of these castables have been evaluated. The results show that the proper choice of deflocculants such as; polycarboxylateether is essential for the development of these castables and improvement of their microstructure and properties. The optimum content of this deflocculant is considered to be 0.06 wt.%.

Keywords: Additive, Deflocculant, Self-flow, Low-cement castable, Microstructure