METHOD FOR MEASURING OR INSPECTING COVERING THICKNESS OF CONCRETE IN REINFORCED CONCRETE STRUCTURE, AND COVERING THICKNESS INSPECTION INSTRUMENT

摘要

PROBLEM TO BE SOLVED: To provide a method for inspecting a covering thickness of concrete capable of performing simple and inexpensive inspection with necessary and sufficient accuracy as preliminary inspection, heightening efficiency for inspecting the covering thickness of concrete, and reducing inspection cost, when inspecting the covering thickness of concrete of each part in a concrete structure.;SOLUTION: In a reinforced concrete structure, a covering thickness inspector (2) having a magnetic force with intensity which is attractable by magnetism when the covering thickness is below a reference value L₀ is brought into contact with a concrete surface (101) which is an inspection object for the covering thickness of concrete (100) with respect to reinforcement (102), and the inspector (2) is moved along the concrete surface (101), while being rolled. It is determined that the covering thickness of the concrete satisfies the reference value L₀ in the case of being not attracted, and that covering thickness of the concrete does not satisfy the reference value L₀ in the case of being attracted.;COPYRIGHT: (C)2011,JPO&INPIT