Load-Bearing Capacity of Two Transparent Adhesives for Glass Joint under Elevated Temperatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00384804" target="_blank" >RIV/68407700:21110/25:00384804 - isvavai.cz</a>

Výsledek na webu

<a href="https://gpd.fi/events/gpd-2025-finland/program/" target="_blank" >https://gpd.fi/events/gpd-2025-finland/program/</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Load-Bearing Capacity of Two Transparent Adhesives for Glass Joint under Elevated Temperatures

Popis výsledku v původním jazyce

Glass, known for its transparency and widespread use in various building applications, is gaining prominence in load-bearing structural components. The distinctive combination of aesthetic appeal and structural potential is driving innovation in architectural and engineering design, thereby expanding the role of glass beyond its traditional applications. However, the brittle nature of glass presents a significant challenge, particularly with the design and implementation of joints in structural glass elements. This paper focuses on transparent adhesive-bonded joints in glass structures, with particular attention to the influence of elevated temperatures on adhesives and the shear load-bearing capacity of bonded joints. Furthermore, the effect of the wettability of floated glass on bonded joints is also discussed. Experimental research findings on transparent adhesive bonding are presented, featuring pilot tests on two adhesives, Loctite® EA 9455 and Epox® G300, each with distinct viscosities, applied to samples made of standard soda-lime-silica float glass. The shear tests were carried out at room temperature and elevated temperatures of 40 °C, 60 °C and 80 °C. The results demonstrate that the behaviour of bonded glass-glass assemblies is significantly altered in a narrow temperature range proximate to the adhesive glass transition temperatures. This research highlights the importance of selecting adhesives with suitable thermal and mechanical properties for load-bearing glass applications. Stiff adhesives, while offering higher initial strength, induce localized stress concentrations that raise the risk of glass failure. Conversely, ductile adhesives promote more uniform stress distribution but exhibit reduced load-bearing capacity at elevated temperatures. These insights are crucial for advancing the design of bonded transparent structural joints, particularly in hightemperature environments where balancing stress resilience and thermal stability is essential.

Název v anglickém jazyce

Load-Bearing Capacity of Two Transparent Adhesives for Glass Joint under Elevated Temperatures

Popis výsledku anglicky

Glass, known for its transparency and widespread use in various building applications, is gaining prominence in load-bearing structural components. The distinctive combination of aesthetic appeal and structural potential is driving innovation in architectural and engineering design, thereby expanding the role of glass beyond its traditional applications. However, the brittle nature of glass presents a significant challenge, particularly with the design and implementation of joints in structural glass elements. This paper focuses on transparent adhesive-bonded joints in glass structures, with particular attention to the influence of elevated temperatures on adhesives and the shear load-bearing capacity of bonded joints. Furthermore, the effect of the wettability of floated glass on bonded joints is also discussed. Experimental research findings on transparent adhesive bonding are presented, featuring pilot tests on two adhesives, Loctite® EA 9455 and Epox® G300, each with distinct viscosities, applied to samples made of standard soda-lime-silica float glass. The shear tests were carried out at room temperature and elevated temperatures of 40 °C, 60 °C and 80 °C. The results demonstrate that the behaviour of bonded glass-glass assemblies is significantly altered in a narrow temperature range proximate to the adhesive glass transition temperatures. This research highlights the importance of selecting adhesives with suitable thermal and mechanical properties for load-bearing glass applications. Stiff adhesives, while offering higher initial strength, induce localized stress concentrations that raise the risk of glass failure. Conversely, ductile adhesives promote more uniform stress distribution but exhibit reduced load-bearing capacity at elevated temperatures. These insights are crucial for advancing the design of bonded transparent structural joints, particularly in hightemperature environments where balancing stress resilience and thermal stability is essential.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/GA23-06016S" target="_blank" >GA23-06016S: Povrchová úprava skla a její vliv na spolehlivost lepených spojů pro skleněné konstrukce za zvýšené teploty</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

GLASS PERFORMANCE DAYS 2025-CONFERENCE PROCEEDINGS BOOK

ISBN

978-952-5836-10-3

ISSN

—

e-ISSN

—

Počet stran výsledku

9

Strana od-do

615-623

Název nakladatele

Glass Performance Days

Místo vydání

Tampere

Místo konání akce

Tampere

Datum konání akce

10. 6. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—