Abstract
Investigation of concrete compressive strength of existing buildings depending on number of core samples
Highlights
Concrete compressive strength is one of the most important parameters affecting the seismic performance of reinforced concrete constructions [1]
This study aims to investigate the possibility of determination of the concrete compressive strength values of existing buildings using lower number of core samples than the required number of cores
Additional core samples to complete 70% of the code required samples are required for concrete strength values lower than 8 MPa
Summary
Concrete compressive strength is one of the most important parameters affecting the seismic performance of reinforced concrete constructions [1]. The estimation of concrete compressive strength values as close as possible to actual values is of great importance for seismic performance evaluation of reinforced concrete buildings. Taking core samples is widely used to determine concrete compressive strengths of reinforced concrete buildings. Determining the number of cores used to estimate the concrete compressive strength is a significant problem in old structures where production quality can vary greatly in terms of the story and/or members. Concrete quality can be reduced due to the negligence in the curing of the concrete. Concrete quality may be lower at upper stories due to difficulties encountered in transportation to a higher level [2]
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