Print Email Facebook Twitter Influence of the carbon dioxide concentration on the resistance to carbonation of concrete Title Influence of the carbon dioxide concentration on the resistance to carbonation of concrete Author Visser, J.H.M. Publication year 2014 Abstract Carbonation of concrete at ambient CO2 concentration is a slow process. This makes the testing of the resistance of concrete against carbonation often too slow to be applicable for service life assessments of new structures. Raising the CO2-concentration will accelerate the test but the validity of an increase CO2-level is debated. If not valid, the service life can be seriously underestimated. In this paper, the effects of accelerating on the carbonation process are discussed. It is shown that a change in CO2 concentration will not change the carbonation process. Since carbonation occurs instantly, a zero CO2 concentration at the carbonation front is maintained. Moreover, it has been concluded that all hydrated and unhydrated cement ultimately carbonates. This implies that the amount of material that can carbonate can be determined on the basis of the amount of calcium in the unreacted cement. © 2013 Elsevier Ltd. All rights reserved. Subject Building Engineering & Civil EngineeringSR - Structural ReliabilityTS - Technical SciencesqBuildings and InfrastructuresArchitecture and BuildingBuilt EnvironmentCarbonationAccelerationCO2 concentrationsStabilityBuffer capacity To reference this document use: http://resolver.tudelft.nl/uuid:f9d24c1e-142e-48b5-bf15-5a670e036bb0 DOI https://doi.org/10.1016/j.conbuildmat.2013.11.005 TNO identifier 535095 Publisher Elsevier Ltd ISSN 0950-0618 Source Construction and Building Materials, 67, 8-13 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.