高液限土填料改良的最佳掺砂砾石比试验研究

对永宁高速公路高液限土填料进行掺砂砾石改良试验，首先分析确定了试验中的重要影响因素并制定了相应的对策，以保证试验结果的可靠性；通过大量的试验得到了不同高液限土的最佳掺砂砾石比，为合理有效地利用高液限土积累了经验，并为类似工程的设计和施工提供了参考。

Experimental study of optimal proportion of gravel adopted to improve the properties of high liquid limit soil subgrade

An experimental study is performed to improve the high liquid limit soil to fill the roadbed of Yongan-Ninghua expressway. Firstly, some important factors influencing the experiment results are found out; and the corresponding countermeasures are established. Then a number of laboratorial experiments are carried out to obtain the optimal proportion of gravel for different high liquid limit soils. The study contributes to the rational use of high liquid limit soil and provides reference to the design and construction of similar engineering.