It is found that the pumpability of the CWP can be featured by two indexes, namely, the slump and the total quantity of water seeping under pressure.

• 通过实验研究了水煤膏的压力泌水特性,分析了颗粒粒度分布、含水量等对水煤膏的泵送特性的影响,并结合水煤膏塌落度指标,提出了水煤膏可泵性的评价指标。