Abstract: According to the demand of corrosion-resisting concrete in the western salt lake area and combining with the local conditions, the performance of magnesium cement concrete was studied by relative elastic modulus, relative quality, comprehensive evaluation parameters and scanning electron microscope under dry and immersed environment.The results show that the best mix ratio of the six mixes of magnesium cement concrete is mix ratio 2, and the proportion of materials used is: water∶MgO∶MgCl2∶stone∶sand∶phosphate∶water-reducing agent=1∶2.87∶1.09∶8.57∶4.61∶0.07∶0.12, after one year test by nondestructive testing method.

Key words: magnesium cement concrete;non-destructive testing;relative dynamic elastic modulus;relative quality;comprehensive evaluate of parameter