Advances in alkali-activation of clay minerals

Ahmed Z. Khalifa; Özlem Cizer; Yiannis Pontikes; Andrew Heath; Pascaline Patureau; Susan A. Bernal; Alastair T.M. Marsh

doi:10.1016/j.cemconres.2020.106050

Advances in alkali-activation of clay minerals

Ahmed Z. Khalifa, Özlem Cizer, Yiannis Pontikes, Andrew Heath, Pascaline Patureau, Susan A. Bernal, Alastair T.M. Marsh

Research output: Contribution to journal › Review article › peer-review

267 Citations (SciVal)

Abstract

To future-proof alkali-activation technology, there is a need to look beyond well-established precursors such as fly ash and blast furnace slag, due to resource competition, geographical distribution and technical limitations. Clay minerals are abundant and diverse aluminosilicate resources available around the world. However, due to the mineralogical complexity amongst the most common 1:1 (kaolinite, halloysite) and 2:1 (montmorillonite, illite) clay minerals, and practical issues such as workability, their use has been more limited. Recent advances have improved understanding both of pre-activation treatments (thermal, mechanical, chemical), and of the factors influencing clay reactivity, phase assemblages and properties of final products. This opens new opportunities for the exploitation of these resources to produce sustainable cements. A one-size-fits-all approach for processing and activating clay minerals is not viable. Instead, activation routes need to be tailored according to the clay mineralogy to achieve the binder properties required for key applications.

Original language	English
Article number	106050
Journal	Cement and Concrete Research
Volume	132
Early online date	12 Apr 2020
DOIs	https://doi.org/10.1016/j.cemconres.2020.106050
Publication status	Published - 30 Jun 2020

Funding

A.Z. Khalifa is supported by the Research Foundation - Flanders ( FWO ) research project G0C2615N . The research contributed by A.T.M. Marsh in this review was sponsored by the UK Engineering and Physical Sciences Research Council ( EPSRC ) through grants EP/L016869/1 and EP/R001642/1 , and a University of Bath Research Scholarship . Participation of S.A. Bernal was partially sponsored by EPSRC through grants EP/R001642/1 and EP/T008407/1 , and National Science Foundation (NSF) through award 1903457 .

Keywords

Alkali activated cement (D)
Clay mineral
N-A-S-H gel
Thermal treatment (A)
Zeolite

ASJC Scopus subject areas

Building and Construction
General Materials Science

Access to Document

10.1016/j.cemconres.2020.106050Licence: CC BY

Cite this

@article{7fe5fcc9ae3046b1b756f9298e248272,

title = "Advances in alkali-activation of clay minerals",

abstract = "To future-proof alkali-activation technology, there is a need to look beyond well-established precursors such as fly ash and blast furnace slag, due to resource competition, geographical distribution and technical limitations. Clay minerals are abundant and diverse aluminosilicate resources available around the world. However, due to the mineralogical complexity amongst the most common 1:1 (kaolinite, halloysite) and 2:1 (montmorillonite, illite) clay minerals, and practical issues such as workability, their use has been more limited. Recent advances have improved understanding both of pre-activation treatments (thermal, mechanical, chemical), and of the factors influencing clay reactivity, phase assemblages and properties of final products. This opens new opportunities for the exploitation of these resources to produce sustainable cements. A one-size-fits-all approach for processing and activating clay minerals is not viable. Instead, activation routes need to be tailored according to the clay mineralogy to achieve the binder properties required for key applications.",

keywords = "Alkali activated cement (D), Clay mineral, N-A-S-H gel, Thermal treatment (A), Zeolite",

author = "Khalifa, {Ahmed Z.} and {\"O}zlem Cizer and Yiannis Pontikes and Andrew Heath and Pascaline Patureau and Bernal, {Susan A.} and Marsh, {Alastair T.M.}",

year = "2020",

month = jun,

day = "30",

doi = "10.1016/j.cemconres.2020.106050",

language = "English",

volume = "132",

journal = "Cement and Concrete Research",

issn = "0008-8846",

publisher = "Elsevier",

}

TY - JOUR

T1 - Advances in alkali-activation of clay minerals

AU - Khalifa, Ahmed Z.

AU - Cizer, Özlem

AU - Pontikes, Yiannis

AU - Heath, Andrew

AU - Patureau, Pascaline

AU - Bernal, Susan A.

AU - Marsh, Alastair T.M.

PY - 2020/6/30

Y1 - 2020/6/30

N2 - To future-proof alkali-activation technology, there is a need to look beyond well-established precursors such as fly ash and blast furnace slag, due to resource competition, geographical distribution and technical limitations. Clay minerals are abundant and diverse aluminosilicate resources available around the world. However, due to the mineralogical complexity amongst the most common 1:1 (kaolinite, halloysite) and 2:1 (montmorillonite, illite) clay minerals, and practical issues such as workability, their use has been more limited. Recent advances have improved understanding both of pre-activation treatments (thermal, mechanical, chemical), and of the factors influencing clay reactivity, phase assemblages and properties of final products. This opens new opportunities for the exploitation of these resources to produce sustainable cements. A one-size-fits-all approach for processing and activating clay minerals is not viable. Instead, activation routes need to be tailored according to the clay mineralogy to achieve the binder properties required for key applications.

AB - To future-proof alkali-activation technology, there is a need to look beyond well-established precursors such as fly ash and blast furnace slag, due to resource competition, geographical distribution and technical limitations. Clay minerals are abundant and diverse aluminosilicate resources available around the world. However, due to the mineralogical complexity amongst the most common 1:1 (kaolinite, halloysite) and 2:1 (montmorillonite, illite) clay minerals, and practical issues such as workability, their use has been more limited. Recent advances have improved understanding both of pre-activation treatments (thermal, mechanical, chemical), and of the factors influencing clay reactivity, phase assemblages and properties of final products. This opens new opportunities for the exploitation of these resources to produce sustainable cements. A one-size-fits-all approach for processing and activating clay minerals is not viable. Instead, activation routes need to be tailored according to the clay mineralogy to achieve the binder properties required for key applications.

KW - Alkali activated cement (D)

KW - Clay mineral

KW - N-A-S-H gel

KW - Thermal treatment (A)

KW - Zeolite

UR - http://www.scopus.com/inward/record.url?scp=85082967687&partnerID=8YFLogxK

U2 - 10.1016/j.cemconres.2020.106050

DO - 10.1016/j.cemconres.2020.106050

M3 - Review article

AN - SCOPUS:85082967687

SN - 0008-8846

VL - 132

JO - Cement and Concrete Research

JF - Cement and Concrete Research

M1 - 106050

ER -

Advances in alkali-activation of clay minerals

Abstract

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this