Degradation of fly ash concrete under the coupled effect of carbonation and chloride aerosol ingress

Jun Liu; Qiwen Qiu; Xiaochi Chen; Xiaodong Wang; Feng Xing; Ningxu Han; Yijian He

doi:10.1016/j.corsci.2016.08.004

Degradation of fly ash concrete under the coupled effect of carbonation and chloride aerosol ingress

Jun Liu, Qiwen Qiu^*, Xiaochi Chen, Xiaodong Wang, Feng Xing, Ningxu Han, Yijian He

^*Corresponding author for this work

Department of Architecture and Civil Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

97 Citations (Scopus)

Abstract

This paper presents an experimental investigation regarding the coupled effect of carbonation and chloride aerosol ingress on the durability performance of fly ash concrete. Test results demonstrate that carbonation significantly affects the chloride ingress profile, reduces the chloride binding capacity, and accelerates the rate of chloride ion diffusion. On the other hand, the carbonation rate of fly ash concrete is reduced by the presence of chlorides aerosol. The interaction nature between concrete carbonation and chloride aerosol ingress is also demonstrated by the microscopic analysis results obtained from scanning electron microscope and mercury intrusion porosimetry.

Original language	English
Pages (from-to)	364-372
Journal	Corrosion Science
Volume	112
Online published	8 Aug 2016
DOIs	https://doi.org/10.1016/j.corsci.2016.08.004
Publication status	Published - Nov 2016

Funding

The financial supports from Natural Science Foundation of China (No. 51578340), National Basic Research Program of China (No. 2011CB013604), and Shenzhen city science and technology project (No. JCYJ20140418182819141, JCYJ20160422102136542) are greatly acknowledged.

Research Keywords

Fly ash concrete
Carbonation
Chloride aerosol ingress
Material degradation
Corrosion
MERCURY INTRUSION POROSIMETRY
ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY
PORE STRUCTURE
INDUCED CORROSION
CEMENT MATERIALS
STEEL CORROSION
PENETRATION
BEHAVIOR
MORTAR
ENVIRONMENT

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title = "Degradation of fly ash concrete under the coupled effect of carbonation and chloride aerosol ingress",

abstract = "This paper presents an experimental investigation regarding the coupled effect of carbonation and chloride aerosol ingress on the durability performance of fly ash concrete. Test results demonstrate that carbonation significantly affects the chloride ingress profile, reduces the chloride binding capacity, and accelerates the rate of chloride ion diffusion. On the other hand, the carbonation rate of fly ash concrete is reduced by the presence of chlorides aerosol. The interaction nature between concrete carbonation and chloride aerosol ingress is also demonstrated by the microscopic analysis results obtained from scanning electron microscope and mercury intrusion porosimetry.",

keywords = "Fly ash concrete, Carbonation, Chloride aerosol ingress, Material degradation, Corrosion, MERCURY INTRUSION POROSIMETRY, ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY, PORE STRUCTURE, INDUCED CORROSION, CEMENT MATERIALS, STEEL CORROSION, PENETRATION, BEHAVIOR, MORTAR, ENVIRONMENT",

author = "Jun Liu and Qiwen Qiu and Xiaochi Chen and Xiaodong Wang and Feng Xing and Ningxu Han and Yijian He",

year = "2016",

month = nov,

doi = "10.1016/j.corsci.2016.08.004",

language = "English",

volume = "112",

pages = "364--372",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Degradation of fly ash concrete under the coupled effect of carbonation and chloride aerosol ingress

AU - Liu, Jun

AU - Qiu, Qiwen

AU - Chen, Xiaochi

AU - Wang, Xiaodong

AU - Xing, Feng

AU - Han, Ningxu

AU - He, Yijian

PY - 2016/11

Y1 - 2016/11

N2 - This paper presents an experimental investigation regarding the coupled effect of carbonation and chloride aerosol ingress on the durability performance of fly ash concrete. Test results demonstrate that carbonation significantly affects the chloride ingress profile, reduces the chloride binding capacity, and accelerates the rate of chloride ion diffusion. On the other hand, the carbonation rate of fly ash concrete is reduced by the presence of chlorides aerosol. The interaction nature between concrete carbonation and chloride aerosol ingress is also demonstrated by the microscopic analysis results obtained from scanning electron microscope and mercury intrusion porosimetry.

AB - This paper presents an experimental investigation regarding the coupled effect of carbonation and chloride aerosol ingress on the durability performance of fly ash concrete. Test results demonstrate that carbonation significantly affects the chloride ingress profile, reduces the chloride binding capacity, and accelerates the rate of chloride ion diffusion. On the other hand, the carbonation rate of fly ash concrete is reduced by the presence of chlorides aerosol. The interaction nature between concrete carbonation and chloride aerosol ingress is also demonstrated by the microscopic analysis results obtained from scanning electron microscope and mercury intrusion porosimetry.

KW - Fly ash concrete

KW - Carbonation

KW - Chloride aerosol ingress

KW - Material degradation

KW - Corrosion

KW - MERCURY INTRUSION POROSIMETRY

KW - ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY

KW - PORE STRUCTURE

KW - INDUCED CORROSION

KW - CEMENT MATERIALS

KW - STEEL CORROSION

KW - PENETRATION

KW - BEHAVIOR

KW - MORTAR

KW - ENVIRONMENT

UR - http://www.scopus.com/inward/record.url?scp=84988902362&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84988902362&origin=recordpage

U2 - 10.1016/j.corsci.2016.08.004

DO - 10.1016/j.corsci.2016.08.004

M3 - RGC 21 - Publication in refereed journal

SN - 0010-938X

VL - 112

SP - 364

EP - 372

JO - Corrosion Science

JF - Corrosion Science

ER -

Degradation of fly ash concrete under the coupled effect of carbonation and chloride aerosol ingress

Abstract

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Research Keywords

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