Influence of exposure environments on the carbonation resistance of concrete structures

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNResearchpeer-review

Abstract

There is agreement that the greenhouse gases, in term of CO2 emissions, are the main contributor to global warming. Increasing atmospheric CO2 emissions are likely to increase the average of maximum temperature and reduce the relative humidity, RH. These changes in CO2 concentration, temperature and RH have considerable impacts on the durability of concrete structures, in particular, the carbonation rate, chloride penetration, and corrosion rate.
This study aims to investigate the potential impact of temperature, relative humidity and permeation properties on the carbonation resistance or depth of carbonation (DoC). The study programme involves casting samples with different water-cement ratio (w/c), 0.4, 0.5 and 0.6. These samples exposed to different temperatures of 25, 35 and 45°C and three levels of humidity 65, 75 and 85 %. Carbonation depth was determined using an accelerated environment test programme based experimentally on the BS EN13295:2004 by phenolphthalein indicator. The results have indicated that (i): The depth of carbonation (DoC) increased with the increase in water-cement ratio under different exposure environments. (ii): There is a considerable influence of relative humidity and relative increase in temperature on the carbonation depth in concrete structures. Finally, the permeation properties for all mixes used of concrete, porosity and gas permeability has a significant impact of DoC.
Original languageEnglish
Title of host publicationRILEM International Conference on Sustainable Materials, Systems and Structures
Place of PublicationRovinj, Croatia
Number of pages8
Publication statusPublished - 20 Mar 2019
EventSustainable Materials, Systems and Structures Conference - Rovinj, Croatia
Duration: 18 Mar 201922 Mar 2019
http://grad.hr/rilem.smss/

Conference

ConferenceSustainable Materials, Systems and Structures Conference
CountryCroatia
CityRovinj
Period18/03/1922/03/19
Internet address

Fingerprint

concrete structure
relative humidity
temperature
cement
durability
corrosion
global warming
humidity
greenhouse gas
penetration
porosity
chloride
exposure
permeability
water
gas
rate
programme

Cite this

AL-Ameeri, A., Rafiq, M. I., & Tsioulou, O. (2019). Influence of exposure environments on the carbonation resistance of concrete structures. In RILEM International Conference on Sustainable Materials, Systems and Structures Rovinj, Croatia.
AL-Ameeri, Abbas ; Rafiq, M. Imran ; Tsioulou, Ourania. / Influence of exposure environments on the carbonation resistance of concrete structures. RILEM International Conference on Sustainable Materials, Systems and Structures. Rovinj, Croatia, 2019.
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title = "Influence of exposure environments on the carbonation resistance of concrete structures",
abstract = "There is agreement that the greenhouse gases, in term of CO2 emissions, are the main contributor to global warming. Increasing atmospheric CO2 emissions are likely to increase the average of maximum temperature and reduce the relative humidity, RH. These changes in CO2 concentration, temperature and RH have considerable impacts on the durability of concrete structures, in particular, the carbonation rate, chloride penetration, and corrosion rate.This study aims to investigate the potential impact of temperature, relative humidity and permeation properties on the carbonation resistance or depth of carbonation (DoC). The study programme involves casting samples with different water-cement ratio (w/c), 0.4, 0.5 and 0.6. These samples exposed to different temperatures of 25, 35 and 45°C and three levels of humidity 65, 75 and 85 {\%}. Carbonation depth was determined using an accelerated environment test programme based experimentally on the BS EN13295:2004 by phenolphthalein indicator. The results have indicated that (i): The depth of carbonation (DoC) increased with the increase in water-cement ratio under different exposure environments. (ii): There is a considerable influence of relative humidity and relative increase in temperature on the carbonation depth in concrete structures. Finally, the permeation properties for all mixes used of concrete, porosity and gas permeability has a significant impact of DoC.",
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AL-Ameeri, A, Rafiq, MI & Tsioulou, O 2019, Influence of exposure environments on the carbonation resistance of concrete structures. in RILEM International Conference on Sustainable Materials, Systems and Structures. Rovinj, Croatia, Sustainable Materials, Systems and Structures Conference, Rovinj, Croatia, 18/03/19.

Influence of exposure environments on the carbonation resistance of concrete structures. / AL-Ameeri, Abbas; Rafiq, M. Imran; Tsioulou, Ourania.

RILEM International Conference on Sustainable Materials, Systems and Structures. Rovinj, Croatia, 2019.

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNResearchpeer-review

TY - GEN

T1 - Influence of exposure environments on the carbonation resistance of concrete structures

AU - AL-Ameeri, Abbas

AU - Rafiq, M. Imran

AU - Tsioulou, Ourania

PY - 2019/3/20

Y1 - 2019/3/20

N2 - There is agreement that the greenhouse gases, in term of CO2 emissions, are the main contributor to global warming. Increasing atmospheric CO2 emissions are likely to increase the average of maximum temperature and reduce the relative humidity, RH. These changes in CO2 concentration, temperature and RH have considerable impacts on the durability of concrete structures, in particular, the carbonation rate, chloride penetration, and corrosion rate.This study aims to investigate the potential impact of temperature, relative humidity and permeation properties on the carbonation resistance or depth of carbonation (DoC). The study programme involves casting samples with different water-cement ratio (w/c), 0.4, 0.5 and 0.6. These samples exposed to different temperatures of 25, 35 and 45°C and three levels of humidity 65, 75 and 85 %. Carbonation depth was determined using an accelerated environment test programme based experimentally on the BS EN13295:2004 by phenolphthalein indicator. The results have indicated that (i): The depth of carbonation (DoC) increased with the increase in water-cement ratio under different exposure environments. (ii): There is a considerable influence of relative humidity and relative increase in temperature on the carbonation depth in concrete structures. Finally, the permeation properties for all mixes used of concrete, porosity and gas permeability has a significant impact of DoC.

AB - There is agreement that the greenhouse gases, in term of CO2 emissions, are the main contributor to global warming. Increasing atmospheric CO2 emissions are likely to increase the average of maximum temperature and reduce the relative humidity, RH. These changes in CO2 concentration, temperature and RH have considerable impacts on the durability of concrete structures, in particular, the carbonation rate, chloride penetration, and corrosion rate.This study aims to investigate the potential impact of temperature, relative humidity and permeation properties on the carbonation resistance or depth of carbonation (DoC). The study programme involves casting samples with different water-cement ratio (w/c), 0.4, 0.5 and 0.6. These samples exposed to different temperatures of 25, 35 and 45°C and three levels of humidity 65, 75 and 85 %. Carbonation depth was determined using an accelerated environment test programme based experimentally on the BS EN13295:2004 by phenolphthalein indicator. The results have indicated that (i): The depth of carbonation (DoC) increased with the increase in water-cement ratio under different exposure environments. (ii): There is a considerable influence of relative humidity and relative increase in temperature on the carbonation depth in concrete structures. Finally, the permeation properties for all mixes used of concrete, porosity and gas permeability has a significant impact of DoC.

M3 - Conference contribution with ISSN or ISBN

BT - RILEM International Conference on Sustainable Materials, Systems and Structures

CY - Rovinj, Croatia

ER -

AL-Ameeri A, Rafiq MI, Tsioulou O. Influence of exposure environments on the carbonation resistance of concrete structures. In RILEM International Conference on Sustainable Materials, Systems and Structures. Rovinj, Croatia. 2019