Development of carbon capture coating to improve the durability of concrete structures

Ligang Peng; Peiliang Shen; Chi Sun Poon; Yuxi Zhao; Fazhou Wang

doi:10.1016/j.cemconres.2023.107154

Development of carbon capture coating to improve the durability of concrete structures

Ligang Peng, Peiliang Shen, Chi Sun Poon, Yuxi Zhao, Fazhou Wang

Research output: Journal article publication › Journal article › Academic research › peer-review

52 Citations (Scopus)

Abstract

A novel carbon capture (CC) coating was developed using CO₂-activated dicalcium silicate, aiming to enhance the durability of concrete structures and sequestrate CO₂. The carbonation products, microstructure and effects validation of the CC coating were investigated. The results showed that the CC coating could achieve a relatively high carbonation degree of 23.3% after 30-min carbonation. The moisture-saturated environment in the CC coating facilitated the formation of a gradient structure with relatively homogeneous carbonation products, i.e. small CaCO₃ crystals (calcite, aragonite, and amorphous CaCO₃) and highly polymerized silica gel, thereby rapidly densifying the microstructure. The CC coating with a thickness of approximately 200 μm significantly improved the concrete durability (decreasing the capillary water absorption by 20.5% after 30-min carbonation) and exhibited a satisfactory bonding strength (2.74 MPa after 30-min carbonation), which has a promising application scenario in extending the service life of concrete structures and reducing the carbon emissions.

Original language	English
Article number	107154
Journal	Cement and Concrete Research
Volume	168
DOIs	https://doi.org/10.1016/j.cemconres.2023.107154
Publication status	Published - Jun 2023

Keywords

Carbon capture coating
Carbonation
Carbonation mechanism
Dicalcium silicate
Durability

ASJC Scopus subject areas

Building and Construction
General Materials Science

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10.1016/j.cemconres.2023.107154

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@article{c0d22deb00f04a9eb0b8971164487a21,

title = "Development of carbon capture coating to improve the durability of concrete structures",

abstract = "A novel carbon capture (CC) coating was developed using CO2-activated dicalcium silicate, aiming to enhance the durability of concrete structures and sequestrate CO2. The carbonation products, microstructure and effects validation of the CC coating were investigated. The results showed that the CC coating could achieve a relatively high carbonation degree of 23.3\% after 30-min carbonation. The moisture-saturated environment in the CC coating facilitated the formation of a gradient structure with relatively homogeneous carbonation products, i.e. small CaCO3 crystals (calcite, aragonite, and amorphous CaCO3) and highly polymerized silica gel, thereby rapidly densifying the microstructure. The CC coating with a thickness of approximately 200 μm significantly improved the concrete durability (decreasing the capillary water absorption by 20.5\% after 30-min carbonation) and exhibited a satisfactory bonding strength (2.74 MPa after 30-min carbonation), which has a promising application scenario in extending the service life of concrete structures and reducing the carbon emissions.",

keywords = "Carbon capture coating, Carbonation, Carbonation mechanism, Dicalcium silicate, Durability",

author = "Ligang Peng and Peiliang Shen and Poon, \{Chi Sun\} and Yuxi Zhao and Fazhou Wang",

note = "Funding Information: Financial support from the Joint Supervision Scheme with Chinese Mainland, Taiwan , and Macao Universities of The Hong Kong Polytechnic University 2020/21, “Xinmiao Talents Program” of Zhejiang Province, and the Special Support Plan for High-level Talents in Zhejiang Province ( 2021R52035 ) is gratefully acknowledged. We gratefully acknowledge the support of the University Research Facility on Chemical and Environmental Analysis (UCEA) of PolyU. Funding Information: Financial support from the Joint Supervision Scheme with Chinese Mainland, Taiwan, and Macao Universities of The Hong Kong Polytechnic University 2020/21, “Xinmiao Talents Program” of Zhejiang Province, and the Special Support Plan for High-level Talents in Zhejiang Province (2021R52035) is gratefully acknowledged. We gratefully acknowledge the support of the University Research Facility on Chemical and Environmental Analysis (UCEA) of PolyU. Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = jun,

doi = "10.1016/j.cemconres.2023.107154",

language = "English",

volume = "168",

journal = "Cement and Concrete Research",

issn = "0008-8846",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Development of carbon capture coating to improve the durability of concrete structures

AU - Peng, Ligang

AU - Shen, Peiliang

AU - Poon, Chi Sun

AU - Zhao, Yuxi

AU - Wang, Fazhou

N1 - Funding Information: Financial support from the Joint Supervision Scheme with Chinese Mainland, Taiwan , and Macao Universities of The Hong Kong Polytechnic University 2020/21, “Xinmiao Talents Program” of Zhejiang Province, and the Special Support Plan for High-level Talents in Zhejiang Province ( 2021R52035 ) is gratefully acknowledged. We gratefully acknowledge the support of the University Research Facility on Chemical and Environmental Analysis (UCEA) of PolyU. Funding Information: Financial support from the Joint Supervision Scheme with Chinese Mainland, Taiwan, and Macao Universities of The Hong Kong Polytechnic University 2020/21, “Xinmiao Talents Program” of Zhejiang Province, and the Special Support Plan for High-level Talents in Zhejiang Province (2021R52035) is gratefully acknowledged. We gratefully acknowledge the support of the University Research Facility on Chemical and Environmental Analysis (UCEA) of PolyU. Publisher Copyright: © 2023 Elsevier Ltd

PY - 2023/6

Y1 - 2023/6

N2 - A novel carbon capture (CC) coating was developed using CO2-activated dicalcium silicate, aiming to enhance the durability of concrete structures and sequestrate CO2. The carbonation products, microstructure and effects validation of the CC coating were investigated. The results showed that the CC coating could achieve a relatively high carbonation degree of 23.3% after 30-min carbonation. The moisture-saturated environment in the CC coating facilitated the formation of a gradient structure with relatively homogeneous carbonation products, i.e. small CaCO3 crystals (calcite, aragonite, and amorphous CaCO3) and highly polymerized silica gel, thereby rapidly densifying the microstructure. The CC coating with a thickness of approximately 200 μm significantly improved the concrete durability (decreasing the capillary water absorption by 20.5% after 30-min carbonation) and exhibited a satisfactory bonding strength (2.74 MPa after 30-min carbonation), which has a promising application scenario in extending the service life of concrete structures and reducing the carbon emissions.

AB - A novel carbon capture (CC) coating was developed using CO2-activated dicalcium silicate, aiming to enhance the durability of concrete structures and sequestrate CO2. The carbonation products, microstructure and effects validation of the CC coating were investigated. The results showed that the CC coating could achieve a relatively high carbonation degree of 23.3% after 30-min carbonation. The moisture-saturated environment in the CC coating facilitated the formation of a gradient structure with relatively homogeneous carbonation products, i.e. small CaCO3 crystals (calcite, aragonite, and amorphous CaCO3) and highly polymerized silica gel, thereby rapidly densifying the microstructure. The CC coating with a thickness of approximately 200 μm significantly improved the concrete durability (decreasing the capillary water absorption by 20.5% after 30-min carbonation) and exhibited a satisfactory bonding strength (2.74 MPa after 30-min carbonation), which has a promising application scenario in extending the service life of concrete structures and reducing the carbon emissions.

KW - Carbon capture coating

KW - Carbonation

KW - Carbonation mechanism

KW - Dicalcium silicate

KW - Durability

UR - https://www.scopus.com/pages/publications/85150416591

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DO - 10.1016/j.cemconres.2023.107154

M3 - Journal article

AN - SCOPUS:85150416591

SN - 0008-8846

VL - 168

JO - Cement and Concrete Research

JF - Cement and Concrete Research

M1 - 107154

ER -

Development of carbon capture coating to improve the durability of concrete structures

Abstract

Keywords

ASJC Scopus subject areas

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