Influence of TiO₂ Nanoparticles on the Physical, Mechanical, and Structural Characteristics of Cementitious Composites with Recycled Aggregates.

Although lower compared to some reports in the literature [ 43 , 68 , 74 , 75 , 76 , 77 ], which show compressive strength increases of 10% to 80%, depending on test age and NT content (1–4 wt.% NT), it can be said that the research results are in agreement with these reports, maintaining an increasing trend, and in contradiction with those indicated by Shekari and Razzaghi [ 60 ], who for a cementitious composite with 1.5% NTs report a reduction in compressive strength of 20.73% at the age of 28 days.

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