In order to explore the strength and quality changes of concrete doped with nanomaterials under sulfate erosion,salt erosion tests were carried out with two kinds of nanomaterials(i.e.,Nano-CuO and Nano-SiO2)sulfate solution with mass percentage concentraitions of 1.0%,5.0%and 10.0%respectively.The results show that with the erosion time increased,the surface of concrete specimens gradually peeled off.The compressive strength first increased and then decreased.Adding a certain amount of Nano materials into concrete can effectively improve the compressive strength,but as the amount of Nano materials increased,the Nano materials will agglomerate and reduce the activity,resulting a decrease in the compressive strength of the concrete.Additionally,the sulfate concentration also affected the compressive strength of concrete.When the sulfate concentration is 10%,adding 0.1%Nano-CuO or 0.1%Nano-SiO2 can improve the sulfate resistance of concrete.Compared with Nano-CuO,Nano-SiO2 is better for improving the sulfate resistance of concrete.
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