Pristupačnost
The field investigation of the bridge over the Slunjčica River in Slunj (Rastoke) was carried out on April 28, 2026. In addition to a visual inspection, non-destructive testing was performed at several accessible locations on the bridge: on the arch, on the piers, and on the underside of the deck structure. A cover meter (profometer) was used to determine the location, spacing, and diameter of reinforcement, as well as the concrete cover thickness. Ultrasonic testing was applied to assess the homogeneity of the concrete and to estimate its modulus of elasticity. A rebound hammer (Schmidt hammer) was used to estimate the compressive strength of the concrete. Electrical resistivity of the concrete was measured using a resistivity meter, while half-cell potential measurements were conducted using the profometer to assess the probability of reinforcement corrosion. Below are some images from the field investigation:
Team gathering in front of the bridge
Detection of reinforcement layout, spacing, diameter, and concrete cover on a bridge pier using a profometer
Detection of reinforcement location, spacing, and diameter, as well as determination of concrete cover on the underside of the deck structure using a profometer
Ultrasonic testing for determining the modulus of elasticity of the pier concrete
Estimation of compressive strength of the arch concrete using a rebound hammer
Measurement of the pier concrete electrical resistivity using a resistivity meter
Half-cell potential measurement at the interface between the pier and the arch using a profometer
Half-cell potential measurement on the underside of the deck slab using a profometer
