Interface shear strength evaluation between different concrete types

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00387351" target="_blank" >RIV/68407700:21110/25:00387351 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21720/25:00387351

Výsledek na webu

<a href="https://doi.org/10.14311/APP.2025.54.0046" target="_blank" >https://doi.org/10.14311/APP.2025.54.0046</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2025.54.0046" target="_blank" >10.14311/APP.2025.54.0046</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interface shear strength evaluation between different concrete types

Popis výsledku v původním jazyce

Composite concrete elements, combining different types of concrete, are widely used in modern infrastructure projects like bridge deck overlays and the reinforcement of existing structures. A critical property for ensuring effective composite action between concrete materials of different ages or types is shear strength, which must be sufficient to prevent excessive slippage or complete separation. This is a fundamental requirement for achieving composite action. This article presents an experimental study on the shear strength at the interface between two different types of concrete, assessed through a push-off test. This investigation stands directly on earlier research focused on the use of high-performance concrete as lost formwork, providing core protection for concrete with recycled aggregates. The study explored the influence of Recycled Aggregate Concrete with aggregates from bricks (RAC) and High-performance Concrete (HPC), with particular attention to the treatment of the concrete interface and the impact of interface roughness and surface treatment. The findings validated the hypothesis that shear strength at smooth, untreated interfaces is considerably lower than that at rough, treated interfaces.

Název v anglickém jazyce

Interface shear strength evaluation between different concrete types

Popis výsledku anglicky

Composite concrete elements, combining different types of concrete, are widely used in modern infrastructure projects like bridge deck overlays and the reinforcement of existing structures. A critical property for ensuring effective composite action between concrete materials of different ages or types is shear strength, which must be sufficient to prevent excessive slippage or complete separation. This is a fundamental requirement for achieving composite action. This article presents an experimental study on the shear strength at the interface between two different types of concrete, assessed through a push-off test. This investigation stands directly on earlier research focused on the use of high-performance concrete as lost formwork, providing core protection for concrete with recycled aggregates. The study explored the influence of Recycled Aggregate Concrete with aggregates from bricks (RAC) and High-performance Concrete (HPC), with particular attention to the treatment of the concrete interface and the impact of interface roughness and surface treatment. The findings validated the hypothesis that shear strength at smooth, untreated interfaces is considerably lower than that at rough, treated interfaces.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

21100 - Other engineering and technologies

Projekt

<a href="/cs/project/GF22-14942K" target="_blank" >GF22-14942K: Možnosti využití přírodních vláken pro výrobu hybridní textilní výztuže do betonu</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

NMM 2024 Nano & Macro Mechanics

ISBN

978-80-01-07507-4

ISSN

2336-5382

e-ISSN

2336-5382

Počet stran výsledku

4

Strana od-do

46-49

Název nakladatele

ACTA Polytechnica CTU

Místo vydání

Prague

Místo konání akce

Praha

Datum konání akce

12. 9. 2024

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—