Chemical and mechanical characterization of ternary cement pastes containing metakaolin and nanosilica

摘要

This paper, for the first time, focuses on the characterization of the chemical and mechanical properties of ternary cement pastes with the addition of up to 18% of metakaolin and colloidal nanosilica. The paste containing 15% of metakaolin and 3% of nanosilica presented an increase of 44% on the compressive strength and a reduction of 66% on the average pore diameter at the age of 91 days, in comparison with the reference paste. Results obtained remark the high potential of ternary cement mixes produced with the combination of metakaolin and nanosilica for the production of high performance cementitious materials. (C) 2017 Elsevier Ltd. All rights reserved.