This study aims to investigate the role of nano TiO 2 in modifying the characteristics of Shanghai clayey silt – alluvial soil in Yangtze river estuary. The Shanghai clayey silt is first mixed with nano TiO 2 with different size group and content before it is made to undergo liquid and plastic limit tests, standard Proctor compaction tests, and acid-resistant tests. The results show that nano TiO 2 can substantially increase the liquid limit and plastic limit of TiO 2 -treated clayey silt, but can decrease the plasticity index of it to some degree. The result from standard Proctor compaction tests shows that the maximum dry bulk density (MBD) decreases and the optimum water content (OWC) increases compared with untreated samples. Acid-resistance of sample is significantly increased after being treated by nano titanium dioxide. The data provided by this study can be used for not only the soil and water conservation, but also for soil improvement, diversity of vegetables and animals, amelioration of crop land, as well as sustainable development.

中文翻译：

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纳米二氧化钛对长江口冲积层水物理性质和耐酸性的影响

本研究旨在探讨纳米TiO 2在改变长江口上海黏土粉砂冲积土特性中的作用。首先将上海黏土粉砂与不同尺寸和含量的纳米TiO 2混合，然后进行液体和塑料极限测试，标准的Proctor压实测试和耐酸测试。结果表明，纳米TiO 2可以显着提高TiO 2处理黏土粉的液位和塑性极限，但在一定程度上降低其塑性指标。标准Proctor压实测试的结果表明，与未经处理的样品相比，最大干体积密度（MBD）降低，最佳含水量（OWC）升高。纳米二氧化钛处理后，样品的耐酸性显着提高。