PSI - Issue 64

Yago Cruz et al. / Procedia Structural Integrity 64 (2024) 732–739 Yago Cruz / Structural Integrity Procedia 00 (2019) 000 – 000

733

2

The water resistance, low cost and fire resistance of reinforced concrete are the properties that justify its widespread use in all types of structures. The large number of concrete structures existing today require structural health monitoring in order to be able to analyze their evolution over time. The application of BIM technology as a tool for recording the condition of structures is an ideal solution, as exemplified by the studies (Bouzas et al., 2022; Mol et al., 2020; Santos et al., 2022). The first for steel structures and the second and the third for timber structures. BIM models are a 3D representation of the structure to which the information gathered during structural health analyses carried out at different points in the life of the buildings can be associated. They thus provide a record of the state of the structure at different points in time, making it possible to study its evolution. Among the most commonly used techniques for the analysis of the structural health of concrete are: the location of steel bars with a pachometer, obtaining the rebound index with a sclerometer, ultrasonic testing and 3D laser scanning. The pachometer is an instrument able to detect the location of reinforcing bars and the depth at which they are located through the emission and reception of a magnetic field. An example of its use can be found in (De Domenico et al., 2022). Sclerometry consists of relating the strength of concrete to its surface hardness. For this purpose, there are several sclerometric tests based on different principles and the use of different instruments that apply them. The most commonly used sclerometer is the Schmidt sclerometer. Some researchers (Ávila et al., 2020) use this device to obtain the interdependence of the compressive strength and the rebound index of concrete. Ultrasonic tests are based on the study of the propagation of an elastic wave in the medium from which its properties are to be extracted, in this case concrete. From the wave propagation velocity, material properties such as the dynamic modulus of elasticity of concrete " ", Poisson's ratio " ", compressive strength " " and flexural strength " " can be extracted. An example of the use of these tests can be found in (Mata et al., 2023). As for laser scanning, its objective is to obtain a point cloud describing the structure under analysis. The laser is an instrument capable of emitting a beam of light within a narrow wavelength range, through the reflectivity of the beam on objects distances are calculated. Its use for damage control in concrete is reflected in (Mizoguchi et al., 2013; Xiong et al., 2013). The proposed methodology aims to analyze a reinforced concrete structure from the point of view of structural health, leaving a record of what has been observed and measured by associating the information to a BIM model of the structure. 2. Methodology Experimental campaigns are carried out at different time stages, after which the health of the structure is evaluated. If necessary, appropriate maintenance actions are carried out. All the information collected in the experimental campaigns and the actions performed on the structure are associated to the BIM model of the structure.

Fig. 1. Flowchart of the methodology.