The invention relates to a
sintering-free method for preparing bricks from dredged
sediment, which comprises the following steps: collecting the dredged
sediment and abandoning the overlaying water; uniformly spraying 2,4,6-trithione-1,3,5-
triazine trisodium salt to the dredged
sediment, stirring quickly, crushing and
grinding the dredged sediment with a
pulverizer after naturally airing; screening the sediment with a
sieve of 100-150 meshes and then mixing with P.O42.5
cement, natural
zeolite and quicklime with the
mass ratio of (90-110): (40-60): (5-20): (0.5-5); controlling the water
cement mass ratio to be 35-45% at
room temperature; pouring into a standard mold and conducting wet curing for 24-48 hours; and then demolding and continuing the curing for 7-90 days to obtain the non-sintered
brick. The method provided by the invention has advantages such as simple process,
energy conservation,
environmental protection, low leachability of
heavy metals, high compression strength, high
porosity and good adsorption. The non-sintered
brick can be used as building materials, and also can adsorb and stabilize
heavy metals and organic substances in water.