بررسي اثر تغيير زاويه نوك كاوشگر ديناميكي DCP بر تكرارپذيري نتايج آنها

Assessment of the effect of DCP tip angle on its results repeatability

Dynamic probing for the assessment of engineering geology and geotechnical projects is a cheaper, quicker and easier method than other methods. The Dynamic Cone Penetrometer is a light weight type of dynamic penetrometer. This device has used to determine CBR of pavement bases and sub bases up to 1 to 1.2 m depths. The aims of this study are to extend application of DCP and assessment of the tips angle effect on repeatability of DCP results. Assessment of the repeatability results and probability distribution functions show that the results are repeatable. The coefficient of determination (R2) show the best distribution functions are lognormal and then normal for the mean of results. Assessment of the effect of tip angle on repeatability is shown the tip with 90° angle is more repeatable than other tips.