Requirements for the filters to protect fly ash slurry are higher than those in compacted soils; The engineering properties of fly ash are getting better with time because of the pozzolanicaction.
由于凝硬作用的影响，粉煤灰的工程性质可能随时间增长而改善，浸水可能不致于使灰的性能恶化；
2
The test results show that by the joint action with the concrete admixture, the pozzolanic, micro-aggregate filling and durable effects of KGF powder can be realized properly.