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Experimental Study on Corrosion of Red Clay-Cemented Soil Composite Mass Cured Three Days under Fulvic Acid

Fulvic acid solution whose the pH value is at 2.9 and 3.5 is adopted to conduct immersion test of three days cured red clay-cemented soil composite mass. Through monitoring the acid consumption and specimen appearance, the corrosivity and mechanism of red clay-cemented soil composite mass while under the fulvic acid circumstances is studied. It is showed that fulvic acid has some corrosivity to the composite mass. The smaller pH value is, and the more severe corrosivity is. The erosion process can be divided into quick response and stable stages, where the former stage is the primary and the latter is weak.