Multiscale Investigation of Porosity Characteristic in Concrete Exposed to Acidic Environment
Porosity has a significant effect on the mechanical response of concrete. It is essential to well understand the relation between porosity characteristics inside the concrete with the damage process of concrete exposed to the aggressive environment. To simulate the acidic environment, the acid solut...
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Hindawi Limited
2012-01-01
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Series: | International Journal of Corrosion |
Online Access: | http://dx.doi.org/10.1155/2012/923010 |
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doaj-c4db38f06fef49f98892f690828edced2020-11-25T00:18:58ZengHindawi LimitedInternational Journal of Corrosion1687-93251687-93332012-01-01201210.1155/2012/923010923010Multiscale Investigation of Porosity Characteristic in Concrete Exposed to Acidic EnvironmentY. F. Fan0H. Y. Luan1S. Y. Zhang2Institute of Road and Bridge Engineering, Dalian Maritime University, Dalian, Liaoning 116026, ChinaInstitute of Road and Bridge Engineering, Dalian Maritime University, Dalian, Liaoning 116026, ChinaInstitute of Road and Bridge Engineering, Dalian Maritime University, Dalian, Liaoning 116026, ChinaPorosity has a significant effect on the mechanical response of concrete. It is essential to well understand the relation between porosity characteristics inside the concrete with the damage process of concrete exposed to the aggressive environment. To simulate the acidic environment, the acid solutions with pH level of 1.5 and 2.5 were deposed by the mixture of the sulfate and nitric acid in the laboratory. Computed tomography (CT) and scanning electron microscopy (SEM) were used to characterize the microstructures of concrete exposed to the acidic solution for the scheduled periods. Pore distribution and porosity ratio of concrete specimens suffering various damage processes are obtained. The CT digital images were analyzed by Pro-Plus software. The threshold value is suggested to identify the pore. The developments of pore structure and porosity ratio of the concrete samples are examined. The relation between the porosity characteristic and mechanical response of concrete is discussed.http://dx.doi.org/10.1155/2012/923010 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Y. F. Fan H. Y. Luan S. Y. Zhang |
spellingShingle |
Y. F. Fan H. Y. Luan S. Y. Zhang Multiscale Investigation of Porosity Characteristic in Concrete Exposed to Acidic Environment International Journal of Corrosion |
author_facet |
Y. F. Fan H. Y. Luan S. Y. Zhang |
author_sort |
Y. F. Fan |
title |
Multiscale Investigation of Porosity Characteristic in Concrete Exposed to Acidic Environment |
title_short |
Multiscale Investigation of Porosity Characteristic in Concrete Exposed to Acidic Environment |
title_full |
Multiscale Investigation of Porosity Characteristic in Concrete Exposed to Acidic Environment |
title_fullStr |
Multiscale Investigation of Porosity Characteristic in Concrete Exposed to Acidic Environment |
title_full_unstemmed |
Multiscale Investigation of Porosity Characteristic in Concrete Exposed to Acidic Environment |
title_sort |
multiscale investigation of porosity characteristic in concrete exposed to acidic environment |
publisher |
Hindawi Limited |
series |
International Journal of Corrosion |
issn |
1687-9325 1687-9333 |
publishDate |
2012-01-01 |
description |
Porosity has a significant effect on the mechanical response of concrete. It is essential to well understand the relation between porosity characteristics inside the concrete with the damage process of concrete exposed to the aggressive environment. To simulate the acidic environment, the acid solutions with pH level of 1.5 and 2.5 were deposed by the mixture of the sulfate and nitric acid in the laboratory. Computed tomography (CT) and scanning electron microscopy (SEM) were used to characterize the microstructures of concrete exposed to the acidic solution for the scheduled periods. Pore distribution and porosity ratio of concrete specimens suffering various damage processes are obtained. The CT digital images were analyzed by Pro-Plus software. The threshold value is suggested to identify the pore. The developments of pore structure and porosity ratio of the concrete samples are examined. The relation between the porosity characteristic and mechanical response of concrete is discussed. |
url |
http://dx.doi.org/10.1155/2012/923010 |
work_keys_str_mv |
AT yffan multiscaleinvestigationofporositycharacteristicinconcreteexposedtoacidicenvironment AT hyluan multiscaleinvestigationofporositycharacteristicinconcreteexposedtoacidicenvironment AT syzhang multiscaleinvestigationofporositycharacteristicinconcreteexposedtoacidicenvironment |
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1725374233918308352 |