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To the Problems of Anchoring Adhesives in High Performance Concrete

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU131425" target="_blank" >RIV/00216305:26110/19:PU131425 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://iopscience.iop.org/article/10.1088/1757-899X/471/5/052020" target="_blank" >https://iopscience.iop.org/article/10.1088/1757-899X/471/5/052020</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1088/1757-899X/471/5/052020" target="_blank" >10.1088/1757-899X/471/5/052020</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    To the Problems of Anchoring Adhesives in High Performance Concrete

  • Popis výsledku v původním jazyce

    The paper deals with selected problems of special use of bonded anchors. It is focused closely on the limits of some epoxy and vinyl ester resins for use as anchoring adhesive in high strength concrete. If the anchor is loaded by tension force in such conditions, the adhesive may be the weakest material in the anchoring system. Therefore, it is necessary to study and describe which parameter is mostly influencing the final resistance of the anchor. The first part of the contribution discusses the design approaches used in codes for the bond failure type. The influence of concrete and adhesive performance is closely described in related references. In the main part of the analysis, experiments with epoxy and vinyl ester adhesives suitable for anchoring in high strength concrete are presented. The analysis is closely focused on bond strength experiments using the steel specimens. The effect of concrete influence is excluded in this case. Several mixtures of high performance epoxy resin and vinyl ester resin are presented. Some tests of resin filled by milled limestone and milled recycled FRP reinforcement are also included. The problem of the testing epoxy adhesive strength itself is also one of the aims of the analysis. The thickness of the adhesive layer is very small in such applications, therefore, it is quite complicated to find appropriate test configuration and also the shape of test specimen. Results of experiments in concrete specimens have shown that the shear strength of the adhesive is the crucial parameter under such conditions. Therefore, the new steel specimen, which is effective for the testing of this shear strength, was designed. The design of this specimen is presented in this paper. The results of this analysis show that the limiting value of the shear strength of such adhesives is close to 30 MPa. In addition, some problems of adhesive shrinkage during the hardening time appeared in tests and they are presented in load-deformation diagrams. The pr

  • Název v anglickém jazyce

    To the Problems of Anchoring Adhesives in High Performance Concrete

  • Popis výsledku anglicky

    The paper deals with selected problems of special use of bonded anchors. It is focused closely on the limits of some epoxy and vinyl ester resins for use as anchoring adhesive in high strength concrete. If the anchor is loaded by tension force in such conditions, the adhesive may be the weakest material in the anchoring system. Therefore, it is necessary to study and describe which parameter is mostly influencing the final resistance of the anchor. The first part of the contribution discusses the design approaches used in codes for the bond failure type. The influence of concrete and adhesive performance is closely described in related references. In the main part of the analysis, experiments with epoxy and vinyl ester adhesives suitable for anchoring in high strength concrete are presented. The analysis is closely focused on bond strength experiments using the steel specimens. The effect of concrete influence is excluded in this case. Several mixtures of high performance epoxy resin and vinyl ester resin are presented. Some tests of resin filled by milled limestone and milled recycled FRP reinforcement are also included. The problem of the testing epoxy adhesive strength itself is also one of the aims of the analysis. The thickness of the adhesive layer is very small in such applications, therefore, it is quite complicated to find appropriate test configuration and also the shape of test specimen. Results of experiments in concrete specimens have shown that the shear strength of the adhesive is the crucial parameter under such conditions. Therefore, the new steel specimen, which is effective for the testing of this shear strength, was designed. The design of this specimen is presented in this paper. The results of this analysis show that the limiting value of the shear strength of such adhesives is close to 30 MPa. In addition, some problems of adhesive shrinkage during the hardening time appeared in tests and they are presented in load-deformation diagrams. The pr

Klasifikace

  • Druh

    D - Stať ve sborníku

  • CEP obor

  • OECD FORD obor

    20102 - Construction engineering, Municipal and structural engineering

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/FV10317" target="_blank" >FV10317: Pokročilé kotevní kontaktní materiály s využitím kompozitů</a><br>

  • Návaznosti

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

Ostatní

  • Rok uplatnění

    2019

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název statě ve sborníku

    IOP Conference Series: Materials Science and Engineering

  • ISBN

  • ISSN

    1757-8981

  • e-ISSN

  • Počet stran výsledku

    8

  • Strana od-do

    1-8

  • Název nakladatele

    IOP Publishing Ltd.

  • Místo vydání

    Bristol, Velká Británie

  • Místo konání akce

    Praha

  • Datum konání akce

    18. 6. 2018

  • Typ akce podle státní příslušnosti

    WRD - Celosvětová akce

  • Kód UT WoS článku

    000465811801082