Accuracy Improving of Defect of Grouting Pile by Low Strain Reflective Wave Method

Defects are distributed along with grouting pile body asymmetrically and it is difficult to evaluate them with only one testing point by the low strain reflective wave method.By increasing the number of testing points and proper arrangement of them,the accuracy of pile defect testing is improved,which is proved by the coring examination method,then the referenced steps of pile defect testing by the low strain reflective wave method is given.