Abstract: To explore the cement soil’s permeability coefficient variation, we performed laboratory permeability test on cement soil of different dry densities, cement contents and ages. The test results show that cement soil’s permeability coefficient is closely related with its dry density, cement content and age when the dry density and age remain unchanged, the permeability coefficient increases with the increase of cement content; while when the dry density under standard compaction work and the age remain the same, the permeability coefficient decreases with the increase of cement content; when the dry density under standard compaction work and the cement content remain the same, the permeability coefficient decreases with the increase of age. These conclusions are helpful to explore cement soil’s permeability, and are also practical for the construction and reinforcement of geotechnical engineering using cement soil.

Key words: cement soil, permeability coefficient, cement content, dry density, age