Carbon dioxide sequestration by alkali-activated materials

Jian Zhang; Caijun Shi; Ning Li; Zuhua Zhang; Nima Farzadnia

doi:10.1016/B978-0-08-102444-7.00012-5

Carbon dioxide sequestration by alkali-activated materials

Jian Zhang
, Caijun Shi
, Ning Li
, Zuhua Zhang
, Nima Farzadnia

Hunan University

Research output: Chapter in Book/Conference proceeding › Chapter › peer-review

Abstract

The carbon dioxide (CO₂) sequestration (also referred to as “carbonation”) of alkali-activated materials (AAMs) as potential key components of future sustainable construction industry has been a research focus worldwide. Reaction products and microstructures of AAMs are different from ordinary Portland cement; therefore the carbonation mechanisms and assessments are different. This chapter mainly discusses the microstructural changes in alkali-activated slag mortars after carbonation and reviews factors influencing carbonation in alkali-activated systems, including precursors, activators, CO₂ concentration, and relative humidity. The compressive strength, main reaction products, porosity, and pore structure of AAMs before and after carbonation are investigated to improve the understanding of the characteristics and mechanisms of carbonation. There remains a large space to completely understand the carbonation in AAMs, yet the perspectives suggested in this chapter will be useful for future studies.

Original language	English
Title of host publication	Carbon Dioxide Sequestration in Cementitious Construction Materials
Publisher	Elsevier Masson s.r.l.
Pages	279-298
Number of pages	20
ISBN (Electronic)	9780081024478
ISBN (Print)	9780081024447
DOIs	https://doi.org/10.1016/B978-0-08-102444-7.00012-5
Publication status	Published - 1 Jan 2018

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure
SDG 12 Responsible Consumption and Production

Keywords

Activators
Alkali-activated materials
Carbonation mechanisms
CO concentration
Microstructures
Precursors
Relative humidity

Access to Document

10.1016/B978-0-08-102444-7.00012-5

Cite this

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title = "Carbon dioxide sequestration by alkali-activated materials",

abstract = "The carbon dioxide (CO2) sequestration (also referred to as “carbonation”) of alkali-activated materials (AAMs) as potential key components of future sustainable construction industry has been a research focus worldwide. Reaction products and microstructures of AAMs are different from ordinary Portland cement; therefore the carbonation mechanisms and assessments are different. This chapter mainly discusses the microstructural changes in alkali-activated slag mortars after carbonation and reviews factors influencing carbonation in alkali-activated systems, including precursors, activators, CO2 concentration, and relative humidity. The compressive strength, main reaction products, porosity, and pore structure of AAMs before and after carbonation are investigated to improve the understanding of the characteristics and mechanisms of carbonation. There remains a large space to completely understand the carbonation in AAMs, yet the perspectives suggested in this chapter will be useful for future studies.",

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author = "Jian Zhang and Caijun Shi and Ning Li and Zuhua Zhang and Nima Farzadnia",

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T1 - Carbon dioxide sequestration by alkali-activated materials

AU - Zhang, Jian

AU - Shi, Caijun

AU - Li, Ning

AU - Zhang, Zuhua

AU - Farzadnia, Nima

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The carbon dioxide (CO2) sequestration (also referred to as “carbonation”) of alkali-activated materials (AAMs) as potential key components of future sustainable construction industry has been a research focus worldwide. Reaction products and microstructures of AAMs are different from ordinary Portland cement; therefore the carbonation mechanisms and assessments are different. This chapter mainly discusses the microstructural changes in alkali-activated slag mortars after carbonation and reviews factors influencing carbonation in alkali-activated systems, including precursors, activators, CO2 concentration, and relative humidity. The compressive strength, main reaction products, porosity, and pore structure of AAMs before and after carbonation are investigated to improve the understanding of the characteristics and mechanisms of carbonation. There remains a large space to completely understand the carbonation in AAMs, yet the perspectives suggested in this chapter will be useful for future studies.

AB - The carbon dioxide (CO2) sequestration (also referred to as “carbonation”) of alkali-activated materials (AAMs) as potential key components of future sustainable construction industry has been a research focus worldwide. Reaction products and microstructures of AAMs are different from ordinary Portland cement; therefore the carbonation mechanisms and assessments are different. This chapter mainly discusses the microstructural changes in alkali-activated slag mortars after carbonation and reviews factors influencing carbonation in alkali-activated systems, including precursors, activators, CO2 concentration, and relative humidity. The compressive strength, main reaction products, porosity, and pore structure of AAMs before and after carbonation are investigated to improve the understanding of the characteristics and mechanisms of carbonation. There remains a large space to completely understand the carbonation in AAMs, yet the perspectives suggested in this chapter will be useful for future studies.

KW - Activators

KW - Alkali-activated materials

KW - Carbonation mechanisms

KW - CO concentration

KW - Microstructures

KW - Precursors

KW - Relative humidity

UR - https://www.scopus.com/pages/publications/85077939264

U2 - 10.1016/B978-0-08-102444-7.00012-5

DO - 10.1016/B978-0-08-102444-7.00012-5

M3 - Chapter

AN - SCOPUS:85077939264

SN - 9780081024447

SP - 279

EP - 298

BT - Carbon Dioxide Sequestration in Cementitious Construction Materials

PB - Elsevier Masson s.r.l.

ER -

Carbon dioxide sequestration by alkali-activated materials

Abstract

UN SDGs

Keywords

Access to Document

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