In order to put the resistivity method into damage study

firstly soaking cemented soil sample in pure water

sewage and industrial wastewater for ninety days

the variation of its electric current are measured in the unconfined compression tests. Combining pictures

the relationships between the current-strain curves and stress-strain curves are compared. Being a basic parameter of the damage degree

the concept of “effective current” has been put forward; and based on it

the damage model of cemented soil is obtained through the statistical method. Finally

the damage model of cemented soil has been normalized. The analysis shows that the variation of current is easy to measure; and the current are varied regularly with the increase of strain. The current-strain curves and stress-strain curves can be divided into four stages which well describe the whole damage process of cemented soil. This model can be unified into a quartic polynomial equation in the whole strain range; and the equation form is irrelevant with cement type and pollution type. The results fully illustrate that it is completely feasible through the current changes to reflect the structural damage process of cemented soil.