Application of GPR in Rebar Detection of Building Structures

Abstract

The detection of rebar in pillars, beams and floor slabs of building structures is a critical issue in urbanized areas. However, due to some natural and artificial objective factors, the quantity of various rebars is not always consistent with the design data, which directly affects the quality and safety of the building. To ensure structural integrity, quality inspectors must make full use of GPR testing technology. In this paper, we discuss, compare and evaluate the geophysical detection methods and effects of GPR technology regarding the possible hidden safety hazards of reinforced concrete structures. Real testing data shows that GPR detection can provide the precise quantity and positioning of rebars within buildings.