Insights into two triethanolamine-derived corrosion inhibitors on the bonding behavior of corroded rebars in concrete

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00386277" target="_blank" >RIV/68407700:21220/25:00386277 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.istruc.2025.109214" target="_blank" >https://doi.org/10.1016/j.istruc.2025.109214</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.istruc.2025.109214" target="_blank" >10.1016/j.istruc.2025.109214</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Insights into two triethanolamine-derived corrosion inhibitors on the bonding behavior of corroded rebars in concrete

Popis výsledku v původním jazyce

The adsorption film of corrosion inhibitors on the steel surface can exert a steric hindrance effect on the permeation and diffusion of chloride ions, which delays the corrosion process of steel bars and reduces the risk of durability decline in reinforced concrete structures. In our study, the concrete specimens and reinforced concrete members incorporated with triethanolamine derivatives, namely triethanolamine phosphate (TP) and triethanolamine dodecylbenzene sulfonate (TDS), were subjected to chloride-induced accelerated corrosion by an electric field. The concrete properties, including compressive strength, ultrasonic pulse velocity, and concrete resistivity, before and after electric field treatment were compared. Meanwhile, the corrosion characteristics and bond-slip behavior of reinforced concrete members were studied. Results showed that electrification causes the deterioration of concrete material, among which the rapid decline in resistivity than strength of TDS concrete is related to the significant influence of TDS on concrete pore solution than interface transition zone. Due to the air-entraining effect, which provides more space to accommodate the expansive products in concrete, the duration of the electric field incurs no discernible effect on the bond strength of reinforced concrete members with TDS. Conversely, members with TP exhibited actual corrosion rates of the main reinforcements far less than the target corrosion rate, and bond strength was enhanced with the duration of the electric field. Finally, a bond-slip model for reinforced concrete pull-out members with TP and TDS was established according to the relationship between the ratio of main reinforcement corrosion rate.

Název v anglickém jazyce

Insights into two triethanolamine-derived corrosion inhibitors on the bonding behavior of corroded rebars in concrete

Popis výsledku anglicky

The adsorption film of corrosion inhibitors on the steel surface can exert a steric hindrance effect on the permeation and diffusion of chloride ions, which delays the corrosion process of steel bars and reduces the risk of durability decline in reinforced concrete structures. In our study, the concrete specimens and reinforced concrete members incorporated with triethanolamine derivatives, namely triethanolamine phosphate (TP) and triethanolamine dodecylbenzene sulfonate (TDS), were subjected to chloride-induced accelerated corrosion by an electric field. The concrete properties, including compressive strength, ultrasonic pulse velocity, and concrete resistivity, before and after electric field treatment were compared. Meanwhile, the corrosion characteristics and bond-slip behavior of reinforced concrete members were studied. Results showed that electrification causes the deterioration of concrete material, among which the rapid decline in resistivity than strength of TDS concrete is related to the significant influence of TDS on concrete pore solution than interface transition zone. Due to the air-entraining effect, which provides more space to accommodate the expansive products in concrete, the duration of the electric field incurs no discernible effect on the bond strength of reinforced concrete members with TDS. Conversely, members with TP exhibited actual corrosion rates of the main reinforcements far less than the target corrosion rate, and bond strength was enhanced with the duration of the electric field. Finally, a bond-slip model for reinforced concrete pull-out members with TP and TDS was established according to the relationship between the ratio of main reinforcement corrosion rate.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Structures

ISSN

2352-0124

e-ISSN

2352-0124

Svazek periodika

77

Číslo periodika v rámci svazku

109214

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

19

Strana od-do

—

Kód UT WoS článku

001496954200003

EID výsledku v databázi Scopus

2-s2.0-105005099007