Investigation of the Relationship between Earthquake Intensity and Concrete Properties, the Example of Hatay Province

Abstract

Hatay is one of the provinces most affected by the Kahramanmaraş-centered earthquakes (7.7 Mw and 7.6 Mw) that occurred on February 6, 2023. Post-disaster assessment studies of building stocks in the Hatay region were initiated shortly after the earthquake. As a result of the assessment studies, 67346 heavily damaged buildings were identified in the region exposed to the earthquake disaster. It has been determined that most of these structures (approximately 21800 buildings) are in Antakya district. In this study, in-situ non-destructive testing (NDT) techniques were used to determine the concrete quality of the building stock in order to determine the cause of this high rate of damage in the Antakya region. In this case, surface hardness value was determined with Schmidt hammer and P-wave velocities were measured. Within the scope of the study, the effects of earthquake intensity on concrete quality were investigated by selecting samples from buildings built close to each other and on the same soils in two different locations. It was determined that the NDT measurements were low in both locations, and the amount of damage to the buildings due to the earthquake was high.