Table 1.

Experimental materials and their manufacturers.

Group	Material	Manufacturer
PC	Portland cement (PC) 330 µL of distilled water	PC-CPB-40 structural Votoran, Votorantim Cimentos, Brazil
PC + ZrO2	PC (70%) + ZrO2 (30%) 330 µL of distilled water	PC-CPB-40 structural Votoran, Votorantim Cimentos, Brazil ZrO2—Sigma-Aldrich Brazil Ltd., São Paulo, SP, Brazil
PC + ZrO2 + ZnO (5%)	PC (65%) + ZrO2 (30%) + ZnO (5%) 330 µL of distilled water	PC-CPB-40 structural Votoran, Votorantim Cimentos, Brazil ZrO2—Sigma-Aldrich Brazil Ltd., São Paulo, SP, Brazil ZnO—Nanotechnology Laboratory of the Physics Institute of São Carlos, SP, Brazil
PC + ZrO2 + ZnO (10%)	PC (60%) + ZrO2 (30%) + ZnO (10%) 330 µL of distilled water	PC-CPB-40 structural Votoran, Votorantim Cimentos, Brazil ZrO2—Sigma-Aldrich Brazil Ltd., São Paulo, SP, Brazil ZnO—Nanotechnology Laboratory of the Physics Institute of São Carlos, SP, Brazil

PC: Portland cement.

ZrO₂: zirconium oxide.

ZnO: zinc oxide.