Carbonation of cement paste

Understanding, challenges, and opportunities

Journal article (2016)

Authors

B. Šavija Materials and Environment - CEG
M. Lukovic Steel & Composite Structures - CEG
Research Group
Materials and Environment (CEG) (TU Delft)
Copyright: © 2016 B. Šavija, M. Lukovic
DOI: https://doi.org/10.1016/j.conbuildmat.2016.04.138
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Published Date

14-05-2016

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Materials and Environment

Abstract

Cement paste is known to react with atmospheric carbon dioxide. Carbonation of cement paste has long been recognized as one of the causes of reinforcement corrosion. On the other hand, carbonation causes numerous chemomechanical changes in the cement paste, most notably changes in strength, porosity, pore size distribution, and chemistry. Furthermore, it can cause shrinkage and cracking of the cementitious matrix. The present review summarises the state of the art regarding the understanding and consequences of carbonation of cement paste. Apart from the passive process of reaction of atmospheric CO2 with cement paste, carbonation is sometimes used on purpose in order to improve certain properties of cementitious materials. This review further summarises recent efforts regarding active use of carbonation as a tool for manipulating certain properties of cement based materials. Possible fields of application include accelerated curing, improvement of fibre reinforced cementitious composites, concrete recycling, and waste immobilization.

Files

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