Long-term Behaviour of GFRP tendon

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F10%3A00174634" target="_blank" >RIV/68407700:21110/10:00174634 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Long-term Behaviour of GFRP tendon

Popis výsledku v původním jazyce

The paper deals with long-term performance and material characterization of GFRP tendons in pre-stressed concrete structures. Regarding pre-stressed GFRP tendon itself relaxation of this composite material has not been fully scanned so far. Therefore relaxation test was carried out in order to describe stress-time relaxation curve for GFRP tendon. It has been verified experimentally that tensile stress decreases in the GFRP tendon when deformation is kept constant. Stress loss after 28 days reached 7,3%. Loss after 130 days reached almost 10,5 %. Nevertheless the most important characteristic of curve geometry of the pre-stressing force loss in GFRP tendon was carried out. Aim of the research was also to develop a visco-elastic predictive model of stress-decreasing curve through the Kelvin and Maxwell chain. This model should help us to describe numerically a relaxation curve for different fibre reinforced polymers and to predict losses without long-term testing.

Název v anglickém jazyce

Long-term Behaviour of GFRP tendon

Popis výsledku anglicky

The paper deals with long-term performance and material characterization of GFRP tendons in pre-stressed concrete structures. Regarding pre-stressed GFRP tendon itself relaxation of this composite material has not been fully scanned so far. Therefore relaxation test was carried out in order to describe stress-time relaxation curve for GFRP tendon. It has been verified experimentally that tensile stress decreases in the GFRP tendon when deformation is kept constant. Stress loss after 28 days reached 7,3%. Loss after 130 days reached almost 10,5 %. Nevertheless the most important characteristic of curve geometry of the pre-stressing force loss in GFRP tendon was carried out. Aim of the research was also to develop a visco-elastic predictive model of stress-decreasing curve through the Kelvin and Maxwell chain. This model should help us to describe numerically a relaxation curve for different fibre reinforced polymers and to predict losses without long-term testing.

Druh

C - Kapitola v odborné knize

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

<a href="/cs/project/GD103%2F09%2FH078" target="_blank" >GD103/09/H078: Počítačová a experimentální analýza stavebních materiálů a jejich vícevrstvých systémů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Computer and Experimental Analysis of Civil Engineering Materials and their Multilayered Systems II

ISBN

978-80-01-04676-0

Počet stran výsledku

9

Strana od-do

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Počet stran knihy

218

Název nakladatele

ČVUT

Místo vydání

Praha

Kód UT WoS kapitoly

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