ASTM D4580/D4580M-12 (R2018) PDF Download

The ASTM D4580/D4580M-12 (R2018) standard provides procedures for surveying concrete bridge decks to determine the presence of delaminations. This practice can be used to assess the general condition of concrete bridge decks and identify specific areas that require repair.

The standard specifies that the procedures described in this practice should not be used on bridge decks that have been overlaid with bituminous mixtures. However, it may be used on bridge decks overlaid with portland cement concrete mixtures, although areas with delaminations could indicate a lack of bond between the overlay and the underlying deck.

The standard covers three procedures: Procedure A (Electro-Mechanical Sounding Device), Procedure B (Chain Drag), and Procedure C (Rotary Percussion). Procedure A involves using an electric-powered tapping device, sonic receiver, and recorder mounted on a cart. The cart is pushed across the bridge deck, and delaminations are recorded on the recorder. Procedure B consists of dragging a chain or tapping the surface with a steel rod or hammer, with the operator identifying dull or hollow sounds as indicators of delamination. Procedure C involves rolling a dual-wheel, multi-toothed apparatus attached to an extension pole over the bridge deck surface, with the percussive force causing either a dull or hollow sound to indicate delamination.

It is important to note that the standard acknowledges that the influence of variable field conditions such as traffic noise, vibration, and moisture content of the concrete are not fully known and may require additional investigation. Additionally, the practice should not be used on frozen concrete.