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 2013 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 carbonate. This implies that the amount of carbonatable matter can be determined on the basis of the amount of calcium in the unreacted cement. Subject Building Engineering & Civil EngineeringSR - Structural ReliabilityTS - Technical SciencesBuildings and InfrastructureArchitecture and Building MaterialsBuilt EnvironmentCarbonationAccelerationCO2 concentrationsStabilityBuffer capacity To reference this document use: http://resolver.tudelft.nl/uuid:f5f39cf8-0ab0-4668-af47-438a59468d50 TNO identifier 479364 Source SCMT3: International Conference of Sustainable Materials and Technologies, Kyoto, August 2013, 1-10 Bibliographical note Award winning paper Document type conference paper Files To receive the publication files, please send an e-mail request to TNO Library.