NON-DESTRUCTIVE EVALUATION (NDE) FOR BRIDGES AND BUILDINGS

This test method involves measuring the time it takes for a pulse of vibrational energy to travel through a concrete member. The vibrational energy is introduced into the concrete by the transmitting transducer, which is coupled to one surface. The pulse travels through the member and is detected by the receiving transducer, which is coupled to the opposite surface. (Source: ACI)

ASTM C805/C805M Standard Test Method for Rebound Number of Hardened Concrete is applicable to assess the in-place uniformity of concrete, to delineate variations in concrete quality throughout a structure, and to estimate in-place strength (Source: ASTM)

This ASTM C803/C803M test method is applicable to assess the uniformity of concrete and to delineate zones of poor quality or deteriorated concrete in structures.

ASTM C873/C873M Standard Test Method for Compressive Strength of Concrete Cylinders Cast in Place in Cylindrical Molds. Strength of cast-in-place cylinders may be used for various purposes, such as estimating the load-bearing capacity of slabs, determining the time of form and shore removal, and determining the effectiveness of curing and protection. (Source: ASTM)

This test can be used for various purposes, such as estimating the load-bearing capacity of slabs, determining the time of form and shore removal, and determining the effectiveness of curing and protection. (Source: ASTM.)

This practice can be used to estimate the in-place strength of concrete to allow the start of critical construction activities such as: (1) removal of formwork and reshoring; (2) post-tensioning of tendons; (3) termination of cold weather protection; and (4) opening of roadways to traffic. (Source: ASTM.)

This non-destructive method is used to identify the probability of corrosion activity of steel reinforcement in reinforced concrete structures, including reinforced concrete bridge decks, tunnel liners, plate-like structures such as walls and slabs, and structures such as beams and columns.