Experimental Study of the Influence of the Water Content and Dry Density on the Penetration Resistance of Compacted Silty Loam
Usually,by using the statistical relationship between penetration resistance and dry density,the static penetration method has been used for the rapid detection of soil compactness.However,for soils whose me-chanical properties are greatly affected by water content,it is difficult to evaluate soil compaction accurately by using penetration resistance only.To study the effect of water content and dry density on the penetration re-sistance of compacted medium-heavy silty loam,samples with different water content and dry density were pre-pared,and static penetration test was conducted.The results show that the penetration resistance decreases lin-early with the increase of water content,and the two fitting parameters increase as a power function with in-creasing dry density.On this basis,the calculation model of penetration resistance is proposed,which could consider the both influence of water content and dry density.Finally,the model predictions were compared with the penetration test results in this paper and from other relevant literature.The result shows that the pro-posed calculation model can predict the penetration resistance of medium-heavy silty loam well.In addition,this model can be used for other types of soil as well.
Static penetration methodPenetration resistanceInfluenceCompactness detectionWater contentSilty loamPrediction model
万方数据
维普
