Effect of composite deflocculant on the properties of medium-cement heat-resistant concrete
Comparative analysis is provided for the properties of medium-cement concrete based on mullite filler in relation to different type of deflocculant. The effect of different deflocculants on concrete structure formation, hydration, rheology, strength and heat resistance is discussed. It is proposed that in concrete with a composite deflocculant it is possible to form nano-structures as a result of which there is a considerable increase in concrete strength after drying at 110°C.
Keywordsmedium-cement heat-resistant concrete composite deflocculant mullite filler microsilica ultrasonic velocity physicomechanical properties
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- 1.H. Hommer and K.Wurtz, “Recent development in deflocculants for castables,” 9th BiennialWorldwide Congress on Refractories (2006).Google Scholar
- 2.J. Von Seyer, “Dispersant and fine aluminas: a new way to tailor flow setting time and strength development in castable mix designs,” Interceram. Refractories Manual, 36 – 47 (2005).Google Scholar
- 3.P. G. Vasilik, “New dispersants (deflocculants) for producing refractory concretes,” Novye Ogneupory, No. 8, 28 – 31 (2003).Google Scholar
- 4.S. Goberis, I. Pundene, and R. Stonis,” The influence of various plastisizers on hydration and physical-mechanical properties of refractory castable with chamotte aggregates,” Proc. 2005 XV Conf. on Refractory Castables, Prague (2005).Google Scholar
- 8.K. K. Strelov, Structure and Properties of Refractories [in Russian], Metallurgiya, Moscow (1982).Google Scholar