Abstract: | The segment Wuhu-Xuancheng highway in Anhui Province is located in the area of soft soil foundation. The foundation is reinforced with fly ash pile or deep mixing composite pile. The various methods are adopted in order to check the quality of cement piles quickly and exactly. The paper discusses the effect of various methods, compares their characteristic and shortcomings and searches for the fast, precise, cheap detection-technique-combination method as well. |