To reveal the intrinsic correlation between the micro-meso moisture-distribution and the engineering properties of the solidified sediments

the lake sediments were solidified by cement. The mechanisms of water transfer and pore structure development in the process of sediment solidification were explored using the nuclear magnetic resonance test. The relationships of the moisture parameters with the permeability k

strength q

u

and deformation modulus E

50

of solidified specimens were investigated. The e

xperimental results showed that the hydration rate was fast within 7 days

and the pore water in the sediment solidification transferred into hydration water. Meanwhile

the most probable pore size decreased

which caused a decrease in k and increases in q

u

and E

50

and hence inducing the formation of the pore structure. However

after 7 days

the hydration reaction continued slowly only if the water diffused and penetrated through hydrates membrane. Significant increases in q

u

and E

50

were also observed for this case. The hydration water M

hw

varied as a linear function of lgk

however

exponential relations were existed between Mhw and q

u

M

hw

and E

50

. Based on the q

u

antified relation model between the micro moisture parameters and the engineering properties

the macro and micro evolution mechanisms of the cement solidified sediment were revealed.