Compressive strength and abrasion resistance of concrete containing SiO2 and Cr2O3 nanoparticles in different curing media

Abrasion resistance and compressive strength of concrete specimens containing SiO2 and Cr2O3 nanoparticles in different curing media have been investigated. Portland cement was partially replaced by up to 2·0 wt% of SiO2 and Cr2O3 nanoparticles and mechanical properties of the produced specimens were measured. Increasing the nanoparticles content was found to increase the abrasion resistance of the specimens cured in water and in saturated limewater, whereas this condition was not observed for compressive strength in either curing media. The enhancement of abrasion resistance was higher in the specimens containing SiO2 nanoparticles in both curing media. Abrasion resistance and compressive strength of the specimens followed a similar regime with increase in nanoparticles for the specimens cured in saturated limewater; therefore, some experimental relationships are presented to correlate these two properties of concrete for this particular curing medium. Overall, it was concluded that the abrasion resistan...

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