Cement soil is an artificial mixed material formed by stirring natural soft soil and cement slurry (or powder) via mechanical stirring or jet punching processes [1,2]. It is primarily a mixture of cement and soil [3,4]. Because of its low price, wide material availability, simple construction process, and excellent performance, cement soil is widely used in foundation treatments and roadbed engineering [5,6]. In practical engineering, groundwater is often polluted by acidic and alkaline pollutants, the pH of which can have a significant impact on the strength characteristics of cement soil [7,8]. Additionally, the erosion of cement soil in a sulfate environment is also significant [9,10]. Bai et al. (2007) compared and analyzed the stress-strain curve of cement soil in clear water and a chemical solution environment using indoor simulation experiments and established the relationship between the compressive strength and erosion time [11]. Dong et al. (2011) tested the strength