Investigation of the Potential for Evaluation of Concrete Flaws Using Nondestructive Testing Methods

Table 1

Description of the objects used to induce defects in the beam.

Type of object	Geometry	Size	Type of defect simulated
Styrofoam ball I	Solid	75 mm	Honeycomb
Styrofoam ball II	Solid	50 mm	Honeycomb
Tennis ball	Hollow with filling	62 mm	Very large air void or honeycomb
Table tennis ball	Hollow	38 mm	Large air void or placement defect
String made of one table tennis ball and two Styrofoam balls	Partly hollow and partly solid	23 to 37 mm	Elongated honeycomb
Wood piece	Elongated Rectangular	15×80×30 mm	Formwork piece
Wood piece II	Rectangular	40×30×55 mm	Formwork piece or honeycomb