Aspects of the modification of refractory concrete with nanosilica
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Aspects of the modification of refractory concretes with different grades of Ludox nanosilica are discussed. It was established that the addition of nanosilica TMA to the binder in amounts no greater than 25% of the binder’s weight increases the strength of medium-cement concretes and alleviates their softening. The grade of nanosilica that is optimum for super-low-cement concretes is AS-40.
Keywordsrefractory concrete additive Ludox nanosilica physico-mechanical characteristics softening of concrete
The studies discussed here were conducted within the framework of the Federal Incentive Program “Scientific and Scientific-Pedagogical Cadre for an Innovative Russia” for the period 2009 – 2013. The overriding objective of the studies was “The Development and Processing of Composite Ceramic Materials,” GK No. 14.740.11.1076.