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Atmospheric chloride penetration into concrete in ...

Jan 01, 1994  Effect of Atmospheric Conditions A variety of environmental variables can influence atmospheric chloride ion penetration into concrete. These will vary depending upon the airborne chlorides in a marine environment (4). The penetration of chloride ions into concrete structures on coastal region is usually caused by sea spray carried inland by ...

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Atmospheric chloride penetration into concrete in ...

An atmospheric chloride content measurement was performed on air-dried concrete specimens in a marine environment under different conditions of exposure. The chloride content in the concrete generally increased with the test period and decreased with the depth of penetration, but the quantity of chloride depended on the exposure conditions of ...

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(PDF) Atmospheric chloride penetration into concrete in ...

Atmospheric chloride penetration into concrete in semitropical marine environment. Cement and Concrete Research, 1994. Khairiyah Mohd Yusof

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Chloride penetration into concrete structures in the ...

Oct 01, 2007  The relationship between chlorides from marine aerosol and chlorides accumulated into concrete is discussed in this paper. The experimental programme comprised an environmental characterisation, with climatic and chloride deposition data, and a study of chloride penetration into concrete based on natural exposure of specimens in a marine atmosphere zone.

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Chloride penetration into concrete in an offshore platform ...

Jul 15, 2015  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.

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Chloride penetration into concrete structures in the ...

The relationship between chlorides from marine aerosol and chlorides accumulated into concrete is discussed in this paper. The experimental programme comprised an environmental characterisation, with climatic and chloride deposition data, and a study of chloride penetration into concrete based on natural exposure of specimens in a marine atmosphere zone.

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[PDF] Chloride penetration into concrete in marine ...

The development of chloride penetration models is essential for the assessment of the service life of concrete structures exposed to marine environment. Simple models derived from Fick's second law of diffusion are at present the best way to predict the chloride penetration in practical situations. However these models need to be calibrated with experimental results.

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Chloride penetration into concrete in marine environment ...

The durability of concrete structures exposed to marine environment depends mainly on the ability of concrete to resist to chloride ingress. This complex phenomenon depends on many parameters related to the concrete properties and to the micro-environmental characteristics. This paper presents the results of an experimental study where fifty four 1.0×0.5×0.12 m concrete panels were exposed ...

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Chloride penetration into concrete structures in the ...

Chloride penetration into concrete structures in the marine atmosphere zone – Relationship between deposition of chlorides on the wet candle and chlorides accumulated into concrete

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Chloride Penetration - Mechanism

Chloride Penetration - Mechanism. The penetration of chloride ions into reinforced concrete structures is the major contributing factor for inducing corrosion of the steel reinforcement. For corrosion to occur, four conditions must be satisfied: High chloride concentration at the level of the rebar ; Presence of moisture ; Presence of oxygen

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Chloride penetration into concrete structures in the ...

Abstract. The relationship between chlorides from marine aerosol and chlorides accumulated into concrete is discussed in this paper. The experimental programme comprised an environmental characterisation, with climatic and chloride deposition data, and a study of chloride penetration into concrete based on natural exposure of specimens in a marine atmosphere zone.

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Chloride Penetration in Nonsaturated Concrete Journal of ...

Apr 02, 2003  The two governing equations that describe the diffusion of chloride ions into nonsaturated concrete are established. Material models for the four material parameters involved in the governing equations are developed, including chloride binding capacity, chloride diffusion coefficient, moisture capacity, and moisture diffusion coefficient.

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Protective Ability of an Acrylic-Based ... - concrete

Mar 01, 1998  The experimental results showed practically no chloride penetration into the concrete beneath the acrylic-based surface coating even after long-term exposure. On the other hand, for the uncoated concrete, the amount of chlorides and their depth of penetration into the concrete were found to be dependent on the water-cement ratio of the concrete.

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Crystals Free Full-Text Permeation Characteristics and ...

The durability of concrete structures in marine environments remains a longstanding challenge mainly due to the complex chloride-induced corrosion of steel bars [].Chloride ions penetrate into concrete, largely affecting the durability of marine concrete structures [].During the corrosion process, four exposure zones can be introduced, including the submerged, tidal, splash, and atmospheric ...

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corrosion can be prevented by using which solution

Jun 14, 2021  That would stop galvanic corrosion but if the seal can still move and with a lovely mixture of water grit and in winter a bit of salt for good measure trapped behind / in the seal

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Chloride penetration into concrete in marine environment ...

DOI: 10.1007/BF02479594 Corpus ID: 135886822. Chloride penetration into concrete in marine environment—Part I: Main parameters affecting chloride penetration @article{Costa1999ChloridePI, title={Chloride penetration into concrete in marine environment—Part I: Main parameters affecting chloride penetration}, author={A. Costa and J. Appleton}, journal={Materials and Structures},

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Chloride penetration into concrete structures in the ...

Abstract. The relationship between chlorides from marine aerosol and chlorides accumulated into concrete is discussed in this paper. The experimental programme comprised an environmental characterisation, with climatic and chloride deposition data, and a study of chloride penetration into concrete based on natural exposure of specimens in a marine atmosphere zone.

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Chloride Penetration in Nonsaturated Concrete Journal of ...

Apr 02, 2003  The two governing equations that describe the diffusion of chloride ions into nonsaturated concrete are established. Material models for the four material parameters involved in the governing equations are developed, including chloride binding capacity, chloride diffusion coefficient, moisture capacity, and moisture diffusion coefficient.

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Concrete carbonation and chloride penetration in

concrete structures in a dockyard constructed with poor quality concrete, it was found that both chloride penetration and carbonation played a significant role in the deterioration of the structures exposed to the marine atmospheric zone. This behaviour is unexpected as chloride penetration in this

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Chloride Penetration in Coastal Concrete Structures: Field ...

Dec 23, 2019  Field measurements of 42 in-service reinforced concrete bridges in coastal environments of Southeast China, covering a wide range of service year, span length, and concrete mixture, were carried out to investigate the chloride penetration. 323 sets of chloride measurement data were collected in total and then analysed to optimize the parameters involved in the common chloride

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Prediction of Chloride Penetration into Hardening Concrete

In marine and coastal environments, penetration of chloride ions is one of the main mechanisms causing concrete reinforcement corrosion. Currently, most of experimental investigations about submerged penetration of chloride ions are started after the four-week standard curing of concrete. The further hydration of cement and reduction of chloride diffusivity during submerged penetration

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Protective Ability of an Acrylic-Based ... - concrete

Mar 01, 1998  The experimental results showed practically no chloride penetration into the concrete beneath the acrylic-based surface coating even after long-term exposure. On the other hand, for the uncoated concrete, the amount of chlorides and their depth of penetration into the concrete were found to be dependent on the water-cement ratio of the concrete.

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Time-Dependent Chloride Transport in Existing Concrete Docks

In order to study the effects of exposure conditions (atmospheric, tidal and splash zones) on chloride ingress into concrete and time-dependent chloride diffusivity of concrete, the chloride ...

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(PDF) Atmospheric Corrosion of Reinforced Concrete Steel ...

Apr 01, 2013  Chloride concentrations o n the surface and at 1 cm depth into concrete depending on distance to the no rth shoreline (m) and w/c ratio for Havana and Yucatan exposure si

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Effect of distance from sea on chloride aggressiveness in ...

Chloride penetration into concrete structures in the marine atmosphere zone – Relationship between deposition of chlorides on the wet candle and chlorides accumulated into concrete Article Oct 2007

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Durability and Aesthetics of Architectural Concrete under ...

Architectural concrete has been wildly used nowadays, and those served in an offshore environment often suffer from chloride penetration and carbonation. To assess the protection and decoration performances of architectural concrete, this study exposed architectural concrete to actual marine environments and accelerated carbonation conditions. The chloride and carbonation resistance of ...

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Types and Causes of Concrete Deterioration

The Role of Chloride Ions Exposure of reinforced concrete to chloride ions is the primary cause of premature corrosion of steel reinforcement. The intrusion of chloride ions, present in deicing salts and seawater, into reinforced concrete can cause steel corrosion if oxygen and moisture are also available to sustain the reaction (Fig. 4).

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Chloride ingress into concrete under different conditions ...

Jan 04, 2021  Among the various factors that influence chloride penetration into concrete are environmental factors such as temperature and exposure conditions. In this context, the present study evaluated chloride penetration for three different exposure conditions (atmospheric, tidal variation and submerged) at temperatures of 15°C, 20°C, 25°C and 30°C ...

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Concrete degradation - Wikipedia

Concrete degradation may have various causes.Concrete can be damaged by fire, aggregate expansion, sea water effects, bacterial corrosion, calcium leaching, physical damage and chemical damage (from carbonatation, chlorides, sulfates and non-distilled water).This process adversely affects concrete exposed to these damaging stimuli.

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