A
sludge solidification method is a method for carrying out solidification treatment to the
sludge produced in water conservancy projects and
civil engineering. The method is that: a. the
liquid water content, the clay content and
organic content of dredging
sludge are tested. b. curing agent is prepared: the curing agent mainly contains
cement and
calcium oxide which play the function of solidification; wherein, the weight proportion is between 1 : 1 to 4 : 1; waste
gypsum is used as water
reducing agent which occupies 1 to 8 percent of the sum of
cement and
calcium oxide in proportion; mealy sand or
pulverized fuel ash are used as concrete aggregate which occupies 3 to 5 percent of the sum of the
cement and
calcium oxide in proportion; c. the curing agent-
mixing ratio which is usually controlled from 5 to 20 percent is determined; sampling respectively is carried out,
setting time is tested and the unconfined
compressive strength which maintains 7, 14 and 28 days is tested by sampling, and the curing agent-
mixing ratio finally is determined according to optimal performance
price ratio; d. the sludge is carried out curing and constructing in site;
mechanical devices are used for stirring the curing agent and the sludge rapidly and evenly, thereby leading the solidification to be rapid and full.