Improvement of high-liquid limit soil in the subgrade of mine roadway

Improvement of high-liquid limit soil in the subgrade of mine roadway

Xingui Zhang  Zixing Chen  Nianping Yi 

College of Civil Engineering and Architecture Guangxi University, Nanning 530004, China

Corresponding Author Email:
| |
| | Citation



Considering the unfavourable engineering properties of high-liquid limit soil, this paper determines the optimal proportion of admixtures for a high-liquid limit soil treatment project of a mine roadway. Specifically, the high-liquid limit soil was modified with quicklime, cement, fly ash, and liquid stabilizer plus curing agent, and subjected to swell-shrink test, compaction test, and the California bearing ratio (CBR) test. The test results show that the soil modified by quicklime outperformed other modification alternatives, and satisfied the intensity requirements when the quicklime content is not less than 3%. The high-liquid limit soil, modified by fly ash, saw no intensity improvement, and had intensity similar to that of the plain soil. The modification by cement only partially enhanced the high-liquid limit soil, and the enhancement effect was not impressive. The treatment of CONAID stabilizer (4%) and curing agent (5%) lead to better swell-shrink features, but failed to achieve a major boost to soil intensity. This research shed important new light on the improvement of high-liquid limit soil in engineering projects


mine road, subgrade, high liquid limit soil, admixture, improvement test

1. Introduction
2. Test materials and test plans
3. Test results analysis
4. Conclusion

Cheng T., Hong B. N., Liu X. (2012). Determination of optimum sand mixing ratio of high liquid limit soil. Journal of Southwest Jiaotong University, Vol. 47, No. 4, pp. 580-585, 596.

Guo G. H. (2014). Experimental Study on Engineering Properties of Cement Improved High Liquid Limit Soil. Traffic Technology, No. 1, pp. 92-95.

Li F. H. (2010). Experimental study on the Optimum ratio of Grit and Gravel to improve the filling of High liquid limit soil. Geotechnical Mechanics, Vol. 31, No. 3, pp. 785-788. Retrieved from

Liang W., Ou X. D. (2008). Experimental Study on Lime Improvement of High Liquid Limit Soil Roadbed in Nanning. Building Science, No. 7, pp. 57-60, 38.

Song J., Liu H. X., Zhang Q. S. (2004). Experimental Study on Improving Engineering Properties of High Liquid Limit Soil by Conaid. Journal of Changsha Jiaotong University, No. 3, pp. 38-42.

Wan Y. J. (2016). Research and Application of Quicklime to Treat High Liquid Limit Soil. Northern Traffic, No. 7, pp. 128-131.

Wu G. X., Zuo Y., Liao J. T. (2008). Research on Simulating Settlement of Disposing Foundation of High Liquid Limit with Gravel Pile by Centrifugal Test. Journal of Chongqing Jiaotong University (Natural Science Edition), Vol. 27, No. 6, pp. 1090-1094.

Xu H. (2015). Construction Technology of Combined Improvement of Lime and Sand with High Liquid Limit Soil. Anhui Architecture, Vol. 22, No. 2, pp. 54-55, 93.

Xu, F. Q., Hong, B. N., Meng, Y. M. (2014). Characteristic Test of High Liquid Limit Soil Subgrade with Sand Mixing Improvement. Progress of Water Conservancy and Hydropower Science and Technology, Vol. 34, No. 6, pp. 76-81.

Zeng J., Deng Z. B., Lan X. (2006). Experimental Study on Road Performance of High Liquid Limit Soil and Red Clay on Zhucheng Highway. Geotechnical Mechanics, No. 1, pp. 89-92, 98.

Zhang W. H., Zheng H. W., Qi J. W. (2015). Experimental Study on the Feasibility of Using Water Glass and Aluminum Sulfate to Treat Complications in High Liquid Limit Soil Subgrade. Advances in Materials Science & Engineering, No. 3, pp. 1-7.

Zhao M. G. (2014). Mechanism Analysis of Lime Improving High Liquid Limit Soil. Changsha University of Science and Technology.