近年来，许多研究围绕粉煤灰改性方法寻找最佳控制条件进行废水处理。
In recent years, Many studies treat waste water according to modified methods of fly ash and searching the best control condition.
试验结果表明，各种接缝面材料中，粉煤灰改性砂浆的劈裂抗拉强度最大，效果最好。
The test results indicated that the bond splitting tensile strength of modified fly ash mortar was best in joint materials of sorts.
试验结果表明：1）相比于未改性土，粉煤灰改性土和石灰改性土自由膨胀率、塑性指数、胶粒含量都显著降低；
The test results indicate that: 1) Compared with unmodified soils, the free swelling ratio, plastic index and clay fraction of fly ash-treated soils and Lime-treated soils decrease obviously.
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