Chloride penetration into concrete in an offshore platform-analysis of exposure conditions

被引：75

作者：

de Medeiros-Junior, Ronaldo Alves ^{[1
]}

de Lima, Maryangela Geimba ^{[1
]}

de Brito, Priscila Catarine ^{[1
]}

Farias de Medeiros, Marcelo Henrique ^{[2
]}

机构：

[1] Aeronaut Inst Technol ITA, Sao Jose Dos Campos, SP, Brazil

[2] Univ Parana UFPR, Curitiba, Parana, Brazil

来源：

OCEAN ENGINEERING | 2015年 / 103卷

基金：

巴西圣保罗研究基金会;

关键词：

Concrete structures; Offshore platform; Marine environment; Chloride; Durability; REINFORCED-CONCRETE; SERVICE LIFE; CEMENT; INGRESS; DURABILITY; PREDICTION; CORROSION; MORTAR;

D O I：

10.1016/j.oceaneng.2015.04.079

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

The chloride penetration in three different exposure zones (Atmospheric, Splash and Tidal) of an offshore concrete platform in the year 2000 and 2005 was analyzed. Chlorides profiles for different orientations of the analyzed structure were also obtained. The apparent diffusion coefficients and surface chloride contents of concrete specimens were determined by curve fitting of chloride profiles in chloride penetration models based in diffusion. Increase in the chlorides ingress with exposure time was verified and microclimatic factors such as exposure to wind and wetting and drying cycles were the main responsible for the behavior of obtained chloride profiles. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：78 / 87

页数：10

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