Effect of metakaolin on the chloride ingress properties of concrete

R.M. Ferreira (Corresponding Author), J.P. Castro-Gomes, P. Costa, R: Malheiro

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Abstract

Research and practical experience have shown that partial replacement of cement by metakaolin improves concrete durability as a result of the refinement of the pore structure. While much research has been presented on concrete performance with metakaolin, it is scarce concerning the transport properties of chlorides in concrete with metakaolin, in natural conditions (i.e., un-accelerated). This study determines the chloride diffusion coefficients for several concretes with vary levels of cement replacement with metakaolin, and compares these results with chloride migration coefficients obtained from accelerated laboratory testing. In this study, two cement types (CEM I 42,5R and CEM IV/A 42,5) and two cement contents levels where used with metakaolin replacement levels varying from 10-20%. Concretes where tested for fresh properties, compressive strength, electrical resistivity, chloride ingress characteristics (natural diffusion and migration), and mercury intrusion porosimetry. The results show improved strength, durability properties and chloride penetration resistance of concretes with metakaolin. Furthermore, the use of metakaolin in fly ash concrete improves the early age performance of the concrete (
Original languageEnglish
Pages (from-to)1375-1384
JournalKSCE Journal of Civil Engineering
Volume20
Issue number4
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

Concretes
Cements
Durability
Pore structure
Fly ash
Transport properties
Compressive strength
Testing

Keywords

  • concrete
  • durability
  • metakaolin
  • chloride
  • diffusion
  • migration
  • electrical resistivity
  • mercury intrusion porosimetry

Cite this

Ferreira, R. M., Castro-Gomes, J. P., Costa, P., & Malheiro, R. (2016). Effect of metakaolin on the chloride ingress properties of concrete. KSCE Journal of Civil Engineering, 20(4), 1375-1384. https://doi.org/10.1007/s12205-015-0131-8
Ferreira, R.M. ; Castro-Gomes, J.P. ; Costa, P. ; Malheiro, R:. / Effect of metakaolin on the chloride ingress properties of concrete. In: KSCE Journal of Civil Engineering. 2016 ; Vol. 20, No. 4. pp. 1375-1384.
@article{76ac4cd4566045d6922d7e13e8f75ce1,
title = "Effect of metakaolin on the chloride ingress properties of concrete",
abstract = "Research and practical experience have shown that partial replacement of cement by metakaolin improves concrete durability as a result of the refinement of the pore structure. While much research has been presented on concrete performance with metakaolin, it is scarce concerning the transport properties of chlorides in concrete with metakaolin, in natural conditions (i.e., un-accelerated). This study determines the chloride diffusion coefficients for several concretes with vary levels of cement replacement with metakaolin, and compares these results with chloride migration coefficients obtained from accelerated laboratory testing. In this study, two cement types (CEM I 42,5R and CEM IV/A 42,5) and two cement contents levels where used with metakaolin replacement levels varying from 10-20{\%}. Concretes where tested for fresh properties, compressive strength, electrical resistivity, chloride ingress characteristics (natural diffusion and migration), and mercury intrusion porosimetry. The results show improved strength, durability properties and chloride penetration resistance of concretes with metakaolin. Furthermore, the use of metakaolin in fly ash concrete improves the early age performance of the concrete (",
keywords = "concrete, durability, metakaolin, chloride, diffusion, migration, electrical resistivity, mercury intrusion porosimetry",
author = "R.M. Ferreira and J.P. Castro-Gomes and P. Costa and R: Malheiro",
year = "2016",
doi = "10.1007/s12205-015-0131-8",
language = "English",
volume = "20",
pages = "1375--1384",
journal = "KSCE Journal of Civil Engineering",
issn = "1226-7988",
publisher = "Springer",
number = "4",

}

Ferreira, RM, Castro-Gomes, JP, Costa, P & Malheiro, R 2016, 'Effect of metakaolin on the chloride ingress properties of concrete', KSCE Journal of Civil Engineering, vol. 20, no. 4, pp. 1375-1384. https://doi.org/10.1007/s12205-015-0131-8

Effect of metakaolin on the chloride ingress properties of concrete. / Ferreira, R.M. (Corresponding Author); Castro-Gomes, J.P.; Costa, P.; Malheiro, R:.

In: KSCE Journal of Civil Engineering, Vol. 20, No. 4, 2016, p. 1375-1384.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of metakaolin on the chloride ingress properties of concrete

AU - Ferreira, R.M.

AU - Castro-Gomes, J.P.

AU - Costa, P.

AU - Malheiro, R:

PY - 2016

Y1 - 2016

N2 - Research and practical experience have shown that partial replacement of cement by metakaolin improves concrete durability as a result of the refinement of the pore structure. While much research has been presented on concrete performance with metakaolin, it is scarce concerning the transport properties of chlorides in concrete with metakaolin, in natural conditions (i.e., un-accelerated). This study determines the chloride diffusion coefficients for several concretes with vary levels of cement replacement with metakaolin, and compares these results with chloride migration coefficients obtained from accelerated laboratory testing. In this study, two cement types (CEM I 42,5R and CEM IV/A 42,5) and two cement contents levels where used with metakaolin replacement levels varying from 10-20%. Concretes where tested for fresh properties, compressive strength, electrical resistivity, chloride ingress characteristics (natural diffusion and migration), and mercury intrusion porosimetry. The results show improved strength, durability properties and chloride penetration resistance of concretes with metakaolin. Furthermore, the use of metakaolin in fly ash concrete improves the early age performance of the concrete (

AB - Research and practical experience have shown that partial replacement of cement by metakaolin improves concrete durability as a result of the refinement of the pore structure. While much research has been presented on concrete performance with metakaolin, it is scarce concerning the transport properties of chlorides in concrete with metakaolin, in natural conditions (i.e., un-accelerated). This study determines the chloride diffusion coefficients for several concretes with vary levels of cement replacement with metakaolin, and compares these results with chloride migration coefficients obtained from accelerated laboratory testing. In this study, two cement types (CEM I 42,5R and CEM IV/A 42,5) and two cement contents levels where used with metakaolin replacement levels varying from 10-20%. Concretes where tested for fresh properties, compressive strength, electrical resistivity, chloride ingress characteristics (natural diffusion and migration), and mercury intrusion porosimetry. The results show improved strength, durability properties and chloride penetration resistance of concretes with metakaolin. Furthermore, the use of metakaolin in fly ash concrete improves the early age performance of the concrete (

KW - concrete

KW - durability

KW - metakaolin

KW - chloride

KW - diffusion

KW - migration

KW - electrical resistivity

KW - mercury intrusion porosimetry

U2 - 10.1007/s12205-015-0131-8

DO - 10.1007/s12205-015-0131-8

M3 - Article

VL - 20

SP - 1375

EP - 1384

JO - KSCE Journal of Civil Engineering

JF - KSCE Journal of Civil Engineering

SN - 1226-7988

IS - 4

ER -