대형삼축압축시험에서의 상사입도조정법 및 자갈입도조정법에 대한 연구

초록

In the element test for coarse granular materials, we should adjust the particle size distribution, since the particle size of the field is sometimes larger than the available maximum particle size of the laboratory test equipment The parallel grading method is most popular for an adjustment of PSD(particle size distribution). And the scalping method and scalp-replace method are alternative adjustment methods. However, there is still no valid research that evaluate the effect these PSD adjustment method on the dynamic properties in small strain. In this study, we carried out the cyclic triaxial test with the specimens adjusted by parallel grading method and scalp-replace method, in order to compare with the specimens of the original PSD materials. The test results showed that the Young’s modulus of the specimens adjusted by parallel grading and scalp-replace method were lower than that of the original specimen. But we could see that the results by scalp-replace method were closer to Young’s modulus of the specimens with the original PSD.