Open Access

ARTICLE

Research on Sleeve Grouting Density Detection Based on the Impact Echo Method

Pu Zhang¹, Yingjun Li¹, Xinyu Zhu¹, Shizhan Xu¹, Pinwu Guan^1,*, Wei Liu², Yanwei Guo², Haibo Wang²

1 School of Civil Engineering, Zhengzhou University, Zhengzhou, 450000, China
2 Xixi Expressway Construction Co., Ltd., Nanyang, 474450, China

* Corresponding Author: Pinwu Guan. Email: