Influence of the previous state of corrosion of rebars in predicting the service life of reinforced concrete structures

被引：13

作者：

Martinez-Echevarria, M. J. ^{[1
]}

Lopez-Alonso, M. ^{[1
]}

Cantero Romero, D. ^{[1
]}

Rodriguez Montero, J. ^{[1
]}

机构：

[1] Univ Granada, Dept Construct Engn & Engn Projects, Granada, Spain

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 188卷

关键词：

Pre-rusted rebars; Corrosion rebars; Durability; Service-life; STEEL BARS; ATMOSPHERIC CORROSION; BEHAVIOR;

D O I：

10.1016/j.conbuildmat.2018.08.173

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Before being imbedded in concrete, rebars often contain rust layers. It is uncertain whether these layers may affect the stability required for the steel in reinforced concrete (RC) structures, as there is a lack of scientific consensus in the limited research dedicated to evaluating such an influence. The present paper therefore describes an experimental study aimed to clarify the consequences of rebar pre-rusting in the service life of RC structures. Samples of corroded reinforcement in construction works underway were collected and characterized, then embedded in concrete blocks. The evolution of their behavior was followed by measuring their corrosion rate. The results obtained show that the corrosion rates of the pre-rusted rebars were greater than those of the rebars that had not undergone any type of previous moisture-related corrosion. Under such circumstances the Tuutti "initiation period" would have disappeared, meaning its service life could be reduced to unacceptable values. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：915 / 923

页数：9

共 33 条

[1] Effect of protective oxide scales in the macrogalvanic behaviour of concrete reinforcements [J].

Alonso, C ;

Andrade, C ;

Izquierdo, M ;

Novoa, XR ;

Perez, MC .

CORROSION SCIENCE, 1998, 40 (08) :1379-1389

[2] CORROSION BEHAVIOR OF PRE-RUSTED REBARS AFTER PLACEMENT IN CONCRETE [J].

ALTAYYIB, AJ ;

KHAN, MS ;

ALLAM, IM ;

ALMANA, AI .

CEMENT AND CONCRETE RESEARCH, 1990, 20 (06) :955-960

[3]

American Concrete Institute, 31814 ACI, P318

[4]

ANDRADE C., 1986, Cement and Concrete Aggregate, V8, P110

[5]

[Anonymous], REV ASOCIACION LATIN

[6]

[Anonymous], C87691 ASTM

[7]

[Anonymous], G1613 ASTM

[8]

[Anonymous], 2011, Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens

[9]

[Anonymous], 1982, CORROSION STEEL CONC

[10] EFFECT OF SUPERFICIAL OXIDES ON CORROSION OF STEEL REINFORCEMENT EMBEDDED IN CONCRETE [J].

AVILAMENDOZA, J ;

FLORES, JM ;

CASTILLO, UC .

CORROSION, 1994, 50 (11) :879-885

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