Investigation of concrete compressive strength of existing buildings depending on number of core samples
Concrete strength is one of the most critical parameters that affect the seismic performance of reinforced concrete constructions. One of the common methods to determine the concrete compressive strength is to take core samples from structural members. However, the number of taken core samples-based...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Pamukkale University
2019-11-01
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| Series: | Pamukkale University Journal of Engineering Sciences |
| Subjects: | |
| Online Access: | https://dergipark.org.tr/tr/pub/pajes/issue/50276/649964 |
| Summary: | Concrete strength is one of the most critical
parameters that affect the seismic performance of reinforced concrete
constructions. One of the common methods to determine the concrete compressive
strength is to take core samples from structural members. However, the number
of taken core samples-based on the size of the construction–is important for reliable
results, especially in old constructions. 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. For this purpose, experimental results of core samples taken from 148
slightly or moderately damaged reinforced concrete buildings during 2011 Simav
Earthquake. Concrete compressive strength values based on 15 different sets
obtained by using 50% and 70% of the core samples of each building are
compared. The compressive strength values calculated from the sets were
compared with the average compressive strengths of all core samples to
investigate accuracy of estimation of compressive strength with using lower number
of core samples. The study also investigates whether there is a significant
difference between samples taken from a single story (i.e. ground story)
compared to the whole building. It is concluded that the use of %50 of the
required core samples is possible for the rapid assessment or large-scale field
investigation studies when the obtained concrete strength is equal to or
greater than 8 MPa. However, additional core samples to complete 70% of the
code required samples are required for concrete strength values lower than 8
MPa. |
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| ISSN: | 1300-7009 2147-5881 |