Abstract: The base material for the channel lining should have a good durability performance, however, the mechanical properties of conventional soils cannot meet the specification requirements in the construction of channel lining and cannot be directly applied to the engineering practice. For this reason, the Jiaozuo Guangli irrigation district loam soil is used as a research object. To explore the degree of chloride-sulfate polymer curing agent on the loam soil durability, the soil samples are mixed with chloride-sulphate polymer curing agent. The mixed soil samples are tested with different agent contents and under the different seepage resistance and anti-freezing conditions. The results show that the cured soil has good durability when the water-cement ratio is 0.3 and the mixing ratio of curing agent: loam: sand is 1∶1∶1; the relative permeability coefficient of the cured soil is 1/5 of that of the cement-cured soil under the same condition, and the anti-freezing grade of the cured soil can reach F25 which is much better than that of the control group F15. In conclusion, this curing agent meets the specification requirements and has high economic benefits, and it has been applied to the actual project.

Key words: Channel Lining, Chloride-Sulfate Polymer Curing Agent, Solidified Soil, Impermeability, Anti-Performance