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赤泥本身具有良好的防渗性能,加入石灰作为激发剂,更可提高其防渗性。根据《土工合成材料测试手册》和GB/T 50123—1999《土工试验方法标准》进行渗透试验,结果表明:室内试验在赤泥中加入8%石灰,并夹一层人工防渗膜形成的复合防渗材料,在固化28 d后,其渗透系数可达(7.3～7.4)×10-9 cm/s。在工业试验中,夹入不同厚度和质地的人工防渗膜的石灰(8%)固化赤泥,渗透系数可达到6.32×10-9～1.89×10-7 cm/s。研究成果在中原某铝厂赤泥堆场防渗工程中得到了应用。
Red mud itself has good impermeability, adding lime as an activator, but also improve its impermeability. According to “Geosynthetics Test Manual” and GB / T 50123-1999 “Geotechnical Test Method Standard” for infiltration test, the results showed that: indoor test in the red mud by adding 8% lime, sandwiched with a layer of artificial impermeable membrane composite After 28 days curing, the permeability coefficient of the impermeable material can reach (7.3 ~ 7.4) × 10-9 cm / s. In industrial tests, the lime mud (8%) sandwiched between artificial impermeable membranes of different thicknesses and textures solidified red mud with a permeability coefficient of 6.32 × 10-9 to 1.89 × 10-7 cm / s. The research results have been applied in the red mud yard anti-seepage project of an aluminum plant in Central Plains.