宁淮高速公路沿线膨胀土的判别及防治

利用规范判别膨胀土类型常常出现不一致的困惑，结合宁淮高速公路等工程实例就“不一致”问题提出作者的见解，并对此工程的膨胀土改性处理进行了掺灰比试验研究。

Discrimination and Control of Expanded Clay Along Ning-Huai Express Way

The total length of Ning (Nanjing)-Huai (Huaian) is about 200 km. The authors participated the preliminary prospecting of engineering geology for the segment from Yongzhuang in Pukou, Nanjing to Wudun in Huain with a length of 143 km. During the field work and indoor analysis,the classification discrimination for the expanded clay were at loose ends, based on the Standard of Roadbed Design (JTJ013-95),the discrimination led to two contradictory conclusions. Brought with the doubts about how to evaluate, describe and discriminate the expanded clay and how to treat the expanded clay effectively as they are important issues should be solved in engineering geological prospecting,the authors advance their own viewpoints in combination with the practical project examples in Ning-Huai Express Way,the unidentical problems on the standard in discriminating the expanded clay are solved. And a plaster mix ratio test study is also conducted to modify the expanded clay in the project mentioned above.