Reliability of the grouting of tendons under consideration of uncertainties under on-site conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F23%3APU149635" target="_blank" >RIV/00216305:26110/23:PU149635 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.matec-conferences.org/articles/matecconf/abs/2023/12/matecconf_ys2023_01004/matecconf_ys2023_01004.html" target="_blank" >https://www.matec-conferences.org/articles/matecconf/abs/2023/12/matecconf_ys2023_01004/matecconf_ys2023_01004.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/matecconf/202338501004" target="_blank" >10.1051/matecconf/202338501004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Reliability of the grouting of tendons under consideration of uncertainties under on-site conditions

Popis výsledku v původním jazyce

This paper contributes to the body of knowledge from German research work Deutscher Ausschuss für Stahlbeton and from author’s experiences, to improve the reliability of cable ducts grouting. The complete and reliable filling of post-tensioned tendons with grout is necessary to protect the prestressing steel against corrosion and for bond between prestressing steel and the concrete structure, which is in both limit states applied. Diagnostics of bridges built in the last century showed the cases of faulty grouting of cable ducts. These faults are cause of corrosion prestressing steel often. Based on these diagnostics, bridges are after 35 to 70 years of service life demolished, although service life of these bridges was to 100 years declared. In the studied research work were investigated the effects of individual components, procedures and conditions of the grout and results of grouting investigated. Tests have been performed both on the experiment cable ducts and the real structures. Based on this paper, certain principles have been recommended that aim to prevent grouting faults and to improve the reliability of the grouting. In these recommendations are suggestions of controls of grouting included

Název v anglickém jazyce

Reliability of the grouting of tendons under consideration of uncertainties under on-site conditions

Popis výsledku anglicky

This paper contributes to the body of knowledge from German research work Deutscher Ausschuss für Stahlbeton and from author’s experiences, to improve the reliability of cable ducts grouting. The complete and reliable filling of post-tensioned tendons with grout is necessary to protect the prestressing steel against corrosion and for bond between prestressing steel and the concrete structure, which is in both limit states applied. Diagnostics of bridges built in the last century showed the cases of faulty grouting of cable ducts. These faults are cause of corrosion prestressing steel often. Based on these diagnostics, bridges are after 35 to 70 years of service life demolished, although service life of these bridges was to 100 years declared. In the studied research work were investigated the effects of individual components, procedures and conditions of the grout and results of grouting investigated. Tests have been performed both on the experiment cable ducts and the real structures. Based on this paper, certain principles have been recommended that aim to prevent grouting faults and to improve the reliability of the grouting. In these recommendations are suggestions of controls of grouting included

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/CK01000042" target="_blank" >CK01000042: Upřesnění zbytkové únosnosti předpjatých mostů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

MATEC Web Conf. Volume 385, 2023, The 15th International Scientific Conference of Civil and Environmental Engineering for the PhD. Students and Young Scientists – Young Scientist 2023 (YS23)

ISBN

—

ISSN

2261-236X

e-ISSN

—

Počet stran výsledku

12

Strana od-do

1-12

Název nakladatele

EDP Sciences

Místo vydání

Francie

Místo konání akce

Štrbské pleso

Datum konání akce

29. 3. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—