| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a new neutralization treatment method for ready-mixed concrete sludge capable of recycling ready-mixed concrete sludge as a backfill at a low cost, and a neutralization treatment material.SOLUTION: The method comprises: a mixing step of adding ferrous sulfate, a polymer flocculant and inorganic powder to ready-mixed concrete sludge and mixing them; and a curing step of curing the mixture obtained by the mixing step. Preferably, the addition amount of the ferrous sulfate in the mixing step is 100 kg or more per mof the ready-mixed concrete sludge, and curing time in the curing step is 14 days or more.</p> |
