Hydration mechanisms and durability of hybrid alkaline cements (HACs): A review

Xue, Lili and Zhang, Zuhua and Wang, Hao (2020) Hydration mechanisms and durability of hybrid alkaline cements (HACs): A review. Construction and Building Materials, 266:121039. pp. 1-14. ISSN 0950-0618


Abstract

Hybrid alkaline cement (HAC) is regarded as a new binder which is composed of more than 70% supplementary cementitious materials (SCMs), less than 30% Portland cement and a small dosage of alkali activator. This cementitious material possesses the advantages of Portland cement and alkali-activated materials (AAMs) and provides more compact microstructure, high early strength and excellent resistance to sulfate attack and chloride penetration. This paper provides an overview on the hydration mechanisms of HACs and durability, including resistance to aggressive solutions and high temperatures, carbonation and efflorescence, chloride ion penetration and alkali-aggregate reaction. It is evident that HAC is more durable than Portland cement in a number of environments; however, the lack of long- term track records in field is the barrier for application. This paper also discusses the knowledge gap to facilitate the future research and development of HAC materials.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 08 Mar 2022 01:40
Last Modified: 28 Mar 2022 04:03
Uncontrolled Keywords: Aggressive solutions; Alkali-aggregate reaction; Efflorescence; Hybrid alkaline cement; Shrinkage
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Fields of Research (2020): 40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
40 ENGINEERING > 4005 Civil engineering > 400505 Construction materials
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering
Identification Number or DOI: https://doi.org/10.1016/j.conbuildmat.2020.121039
URI: http://eprints.usq.edu.au/id/eprint/46444

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