Abstract
High-performance fiber-reinforced cement composite (HPFRCC) mixtures containing high-volume fly ash and nanomaterials are investigated in this study. In order to determine high early strength and high connection performance between repair mortar produced with HPFRCC containing nanomaterials, high volume fly ash, and concrete which will be repaired, compressive strength, elasticity, and slant shear test were conducted on the samples. The experimental results showed that HPFRCC mixtures containing nanomaterials increased the strength on 1, 3, 7, 28, and 90 days in comparison to control mortars for compressive strength test. Also, the samples containing nanosilica gave the highest compressive strength in all mixtures. In addition, the samples containing nanosilica gave the best result for elasticity modulus, showing similarity to compressive strength test. For the bond strength, deformations were observed on the old concrete in the samples formed from HPFRCC mixtures and old concrete. Expected sloping surface sliding was not occurred.
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