Standard Test Method for Evaluating Concrete Pavement Dowel Bar Alignment Using Magnetic Pulse Induction

Importancia y uso:

5.1 Joints in concrete pavements of highways, airfields, and other facilities are exposed to stresses and strains due to traffic and temperature variation. Examining concrete pavement dowel bars (see Specifications A615/A615M and A1078/A1078M) in joints is important to ensure that load transfer at joints between concrete slabs occurs efficiently in order to prevent damage to the pavement and thus shortening its service life. Using magnetic pulse induction (MPI) to examine dowel bars provides owners and contractors a nondestructive testing method to determine that the bars are installed correctly. MPI examination can be performed on existing joints and can support forensic investigations into pavement failures.

5.2 The use of MPI methods and equipment provides a quality control process for installers to use to document that dowel bars are installed correctly in new pavements. Owners use the same device to perform quality assurance activities and accept installed facilities from contractors.

5.3 MPI devices provide reliable quantitative results that are repeatable with not only the same device but also with other calibrated MPI devices.

Subcomité:

E17.41

Volúmen:

04.03

Número ICS:

93.080.20 (Road construction materials)

Palabras clave:

concrete pavement; concrete pavement joint NDT; depth of dowel bars; dowel bar alignment; dowel bar baskets; dowel bar insertion (DBI); dowel bar NDT; dowel bar spacing; eddy current tomography; electromagnetic tomography; magnetic pulse induction tomography; NDT dowel bar examination; pulse induction method; QA/QC dowel bar joints;