Prediction of Compaction Parameters of Khon Kaen Loess Soil


  • Prinya CHINDAPRASIRT Sustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineering, Khon Kaen University 40002, Thailand
  • Apichit KAMPALA Department of Civil Engineering, Faculty of Engineering, Rajamangala University of Technology Isan, Khon Kaen Campus, Khon Kaen 40000, Thailand
  • Anukun ARNGBUNTA Department of Civil Engineering, Faculty of Engineering, Rajamangala University of Technology Isan, Khon Kaen Campus, Khon Kaen 40000, Thailand
  • Suksun HORPIBULSUK Center of Excellence in Innovation for Sustainable Infrastructure Development, School of Civil Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand



Loess, Compaction energy, Plastic limit, Optimum water content, Maximum dry unit weight


Soil stratum in Khon Kaen province, located in Northeast of Thailand, is well-known as a wind-deposited fine-grained soil (i.e. silty sand and silty clay). It is normally called “Loess or Khon Kaen Loess”.  This soil in disturbed stage is usually extracted from the borrow pit and subsequently compacted for infrastructure applications. The compaction resulted in silty sand or silty clay aggregation with unpredictable properties. Although required for infrastructure design, studies on Khon Kaen Loess are limited. Thus, this research examines the compaction behavior and predicts soil parameters at various clay contents under a series of compaction energy on Khon Kaen Loess. The results showed that the maximum dry unit weights of samples could be related to the dry unit weight at plastic limit (PL), while the optimum water content (OWC) was correlated linearly with the PL. The samples with higher PL presented the higher OWC. In addition, the maximum dry unit weight and OWC of samples could be estimated using the developed equations validated with the other research results.


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How to Cite

CHINDAPRASIRT, P. ., KAMPALA, A. ., ARNGBUNTA, A. ., & HORPIBULSUK, S. . (2020). Prediction of Compaction Parameters of Khon Kaen Loess Soil. Walailak Journal of Science and Technology (WJST), 17(12), 1367–1378.