Physical and Numerical Analysis of Corrosion Damage of Prestressing Tendons of the Collapsed Roof Structure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24520%2F26%3A00014639" target="_blank" >RIV/46747885:24520/26:00014639 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S245232162500513X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S245232162500513X?via%3Dihub</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Physical and Numerical Analysis of Corrosion Damage of Prestressing Tendons of the Collapsed Roof Structure

Popis výsledku v původním jazyce

This conference paper presents the results of a physical and numerical analysis of the effect of corrosion damage on the material properties of prestressing tendons, which were taken from the wreckage of collapsed prestressed roof truss. The main objective of the described research was to evaluate the effect of the depth of corrosion damage on the material properties of prestressing tendons, which were formed by untwisted bundles of patented wires. Corrosion damage was artificially initiated on prestressing tendon samples in a corrosion chamber under the accelerating influence of temperature and salt spray. Test samples of prestressing tendons were stored in a corrosive environment for three exposure time intervals of 60, 100 and 140 days. Corrosion-damaged samples were subsequently subjected to precise spatial scanning with a 3D profilometer, to obtain spatial model of the corrosion-altered surface topography. Subsequently, tensile tests of corrosion-damaged samples and a reference set of samples without corrosion damage were carried out. The data were used to create numerical models of individual test samples and were verified with physical tensile strength tests, evaluated the possibilities of predicting the location of sample failure based on the 3D scan and the shape of corrosion defects, and last but not least, verified the actual weight loss of the material and the volume loss obtained from the 3D model.

Název v anglickém jazyce

Physical and Numerical Analysis of Corrosion Damage of Prestressing Tendons of the Collapsed Roof Structure

Popis výsledku anglicky

This conference paper presents the results of a physical and numerical analysis of the effect of corrosion damage on the material properties of prestressing tendons, which were taken from the wreckage of collapsed prestressed roof truss. The main objective of the described research was to evaluate the effect of the depth of corrosion damage on the material properties of prestressing tendons, which were formed by untwisted bundles of patented wires. Corrosion damage was artificially initiated on prestressing tendon samples in a corrosion chamber under the accelerating influence of temperature and salt spray. Test samples of prestressing tendons were stored in a corrosive environment for three exposure time intervals of 60, 100 and 140 days. Corrosion-damaged samples were subsequently subjected to precise spatial scanning with a 3D profilometer, to obtain spatial model of the corrosion-altered surface topography. Subsequently, tensile tests of corrosion-damaged samples and a reference set of samples without corrosion damage were carried out. The data were used to create numerical models of individual test samples and were verified with physical tensile strength tests, evaluated the possibilities of predicting the location of sample failure based on the 3D scan and the shape of corrosion defects, and last but not least, verified the actual weight loss of the material and the volume loss obtained from the 3D model.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

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Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2026

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů