A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A statistical study for the correlation of non destructive testing and destructive testing on structures in concrete
There is often a need to evaluate the in place strength of concrete in existing structures for an accurate assessment of their structural capacities. A study was carried out on a building in concrete (Punta Perotti in Bari, Italy) before its demolition. Punta Perotti, exposed for more than ten years to aggressive environmental conditions (near the sea and in a windy area), was selected to study the life cycle of the materials. About 180 cores (10 cm diameter) were taken from the pillars at five different floors after a previous non destructive testing campaign (mainly ultrasonic and rebound hammer tests) made on the same stations. European (EN 13791) standard and USA (ACI 228) guide lines were followed for in situ measurements and data analysis. The possible correlations between non destructive testing (NDT) and compressive strength (DT) of cores are analysed with an exhaustive statistical approach and a new method to improve correlation results is proposed. A wide campaign of non destructive and destructive tests on the same structure (Punta Perotti, Italy) was carried out in order to study a methodology to built up a better correlation curve to define the mechanical strength of the concrete. The main goal of this research work is to support the designer to assess the reliability of an existing structure, without having a complete knowledge of its condition, in the choice of the best position in which to extract the cores. To reach this goal a statistical approach was used.
A statistical study for the correlation of non destructive testing and destructive testing on structures in concrete
There is often a need to evaluate the in place strength of concrete in existing structures for an accurate assessment of their structural capacities. A study was carried out on a building in concrete (Punta Perotti in Bari, Italy) before its demolition. Punta Perotti, exposed for more than ten years to aggressive environmental conditions (near the sea and in a windy area), was selected to study the life cycle of the materials. About 180 cores (10 cm diameter) were taken from the pillars at five different floors after a previous non destructive testing campaign (mainly ultrasonic and rebound hammer tests) made on the same stations. European (EN 13791) standard and USA (ACI 228) guide lines were followed for in situ measurements and data analysis. The possible correlations between non destructive testing (NDT) and compressive strength (DT) of cores are analysed with an exhaustive statistical approach and a new method to improve correlation results is proposed. A wide campaign of non destructive and destructive tests on the same structure (Punta Perotti, Italy) was carried out in order to study a methodology to built up a better correlation curve to define the mechanical strength of the concrete. The main goal of this research work is to support the designer to assess the reliability of an existing structure, without having a complete knowledge of its condition, in the choice of the best position in which to extract the cores. To reach this goal a statistical approach was used.
A statistical study for the correlation of non destructive testing and destructive testing on structures in concrete
Eine statistische Untersuchung der Korrelation der zerstörungsfreien Prüfung und der zerstörenden Prüfung von Betonstrukturen
Luprano, Vincenza A.M. (author) / Pfister, Valerio (author) / Tati, Angelo (author) / Tundo, Antonella (author)
2010
7 Seiten, 4 Bilder, 4 Tabellen, 8 Quellen
Conference paper
Storage medium
English
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