Bond Strength of Plain Coated Steel Reinforcement Bars with Concrete

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21450%2F23%3A00368774" target="_blank" >RIV/68407700:21450/23:00368774 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21610/23:00368774

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Bond Strength of Plain Coated Steel Reinforcement Bars with Concrete

Original language description

The paper describes some mechanisms and aspects influencing the testing of the cohesion of coated steel reinforcement bars (rebars) with concrete. Cohesion was verified on plain steel rebars with zinc and nickel coatings. One hot-dip zinc coating (Zn HDG) and three galvanic coatings, in particular zinc (Zn G), zinc-nickel (ZnNi) and nickel coating (Ni), were included in the experiment. The main goal of the work was to verify and describe the effect of these surface treatments on the cohesion of rebar with concrete. The evaluation of the coherence of the whole system was carried out according to the international standard RILEM RC 6 (pullout test). To complement the correlation of roughness to the final cohesion, roughness measurements were also performed on all tested surfaces. Furthermore, the paper deals with the ČSN EN 10348-2 standard and points out pitfalls that can make it difficult to design structures with coated steel reinforcement bars. The dependence of cohesion on the roughness of the coating was confirmed in the experiment. It has also been proven that corrosion of zinc in an alkaline environment reduces the cohesion of the coated rebar with concrete and creates a porous contact surface at the interface between the cement paste and the rebar. Due to the high roughness (compared to other surfaces), corrosion of zinc during hydrogen evolution did not affect the results of the adhesion tests for the hot-dip zinc coating, where the adhesion to concrete was higher than that of steel.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

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

Article name in the collection

Proceedings of 28th Hot Dip Galvanizing Conference

ISBN

978-80-908341-1-8

ISSN

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e-ISSN

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Number of pages

11

Pages from-to

100-110

Publisher name

Asociace českých a slovenských zinkoven

Place of publication

Ostrava

Event location

Ostrava

Event date

Oct 3, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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