Detection of Defects in Bored Piles By NonDestructive Methods On LRT Construction Site

Abstract

This article presents the detection of defects in bored piles with cross-section 1.2†1.5 m and length 10†53 m. PIT and Сross-hole Sonic Logging (CSL) methods were used to detect defects in piles. These works were carried out in the city of Nur-Sultan on LRT construction site. Integrity inspections performed after installation are often the most reasonable alternative available to assess the pile quality. This paper discusses the similarities and differences, also advantages and disadvantages. Both Cross-hole Sonic logging and impact echo integrity testing indicated defects in several pile. Subsequent coring confirmed these defects. The results of the two test methods are presented and compared with each other.